HVAC, Plumber & Electrician in Henderson, KY | A+ Derr
24/7 Emergency Service

HVAC emergencies happen when you least expect them. Contact the professionals at A+ Derr to take care of your issue. We have the necessary skills and tools to fix your system so you can safely use it once again. Call our team at 833-232-4328 to get emergency HVAC services in Louisville, KY, Evansville, IN, or the surrounding areas.

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Premier Heating & Cooling Services in Henderson, KY

 

 Henderson Service Overview

  • Dedicated Local Coverage: A+ Derr provides consistent, regular service across ZIP code 42420, with technicians crossing into Henderson via US 41 daily.
  • Specialized Pre-2000 & New Construction Expertise: Our team focuses on diagnosing underlying duct, wiring, and piping issues common in Henderson’s pre-2000 housing stock while supporting new residential expansions on the city’s outskirts.
  • Four Integrated Home & Business Trades: We offer comprehensive heating, cooling, plumbing, and electrical solutions, including commercial service along US 41 and support for properties near John James Audubon State Park.

 

Crossing the Ohio River into Henderson on US 41 brings you into a city with its own neighborhoods, businesses, wooded areas, and home service needs. Most Henderson homes were built before 2000, although new construction continues to expand near the outskirts of the city. A+ Derr provides heating, cooling, plumbing, and electrical service throughout Henderson and ZIP code 42420.

“Got a couple quotes from different competitors. Received a quote from Brad Crabtree at A+ Derr. When the estimate did not reach my expectation, we were able to meet in the middle. Matt and Caleb just left. New AC and furnace system. I received high-quality work at an affordable cost from an honest, dependable, reputable company. Glad I went with A+!”

Liz Z.

Need a trusted HVAC contractor, plumber, or electrician in Henderson, KY? Call 833-232-4328 or contact A+ Derr online today.

A+ Derr technician

Dependable Furnace Repair & Winter Heating in Henderson

Henderson is close to Evansville, but it is not simply another part of the same city. The river, US 41, John James Audubon State Park, and Henderson’s established residential areas give the community a distinct layout and identity.

The age of Henderson’s housing matters when diagnosing a problem. A renovated room may look new while depending on older ducts, pipes, or wiring behind the walls. Replacing the visible equipment without considering those supporting systems can leave the original problem unresolved.

Solving HVAC, Plumbing, Electrical Issues in Henderson Homes

Problem: Ohio River humidity causes homes to feel sticky and warm even when the thermostat reaches its setting, while heavy seasonal debris from John James Audubon State Park clogs outdoor coils.

Solution: A+ Derr delivers targeted AC repairs, ductless mini-splits, whole-home dehumidifiers, duct cleaning, coil clearing, and air purifiers to restore cooling and indoor air quality.

Problem: Fast weather shifts strain older furnaces, boilers, and heat pumps, causing unexpected winter breakdowns, weak airflow, or frozen systems.

Solution: Our technicians provide emergency heating repairs, preventive seasonal tune-ups, furnace replacements, and duct adjustments across ZIP code 42420.

Problem: Remodeled kitchens and updated bathrooms in older homes often rely on outdated, mixed drain lines and supply piping hidden behind new finishes, causing recurring leaks and low water pressure.

Solution: Our master plumbers evaluate the full system to fix pipe leaks, clear recurring main drain line clogs, install tankless water heaters, and execute complete repiping.

Problem: Modern high-demand appliances, EV chargers, and severe river valley storms overload pre-2000 electrical panels, causing tripped breakers, power outages, and potential surge damage.

Solution: Our licensed electricians handle panel and meter upgrades, dedicated appliance circuits, EV charger setups, whole-home surge protection, and standby generator installations.

Rapid AC Repair & River Valley Humidity Control in 42420

Summer along the Ohio River often brings more than high temperatures. Heavy humidity can enter the home, increase cooling demand, and make rooms feel uncomfortable even when the thermostat reaches its setting.

Henderson homeowners often call us when:

  • The AC runs without drying the air
  • Rooms feel sticky after cooling cycles
  • Airflow weakens at distant vents
  • An added room stays warmer than the house
  • Utility bills rise each summer
  • The outdoor unit collects leaves or debris
  • Upper rooms hold heat late into the evening
  • The system freezes or shuts down
  • Musty odors return during humid weather
  • Older equipment needs frequent repairs

A+ Derr repairs, maintains, installs, and replaces air conditioners, heat pumps, and ductless mini-splits. We also offer duct cleaning, dehumidifiers, air purifiers, insulation, and emergency cooling. Instead of assuming every comfort problem requires new equipment, we test cooling output, airflow, duct performance, thermostat operation, and indoor moisture.

Struggling with sticky indoor air or debris clogging your outdoor AC unit near Audubon Park? Call 833-232-4328 or schedule online for prompt cooling repairs and dehumidification.

Seasonal HVAC Care for Properties Near Audubon State Park

John James Audubon State Park is one of Henderson’s defining landmarks. Properties near wooded parts of the city can experience service concerns tied to leaves, pollen, seed pods, branches, and other seasonal debris.

Outdoor air conditioners and heat pumps need open space around their coils to move heat properly. Material that collects around the cabinet can reduce airflow and make the equipment work harder. Pollen and fine particles may also load filters faster and affect indoor air quality.

Seasonal HVAC care for wooded Henderson properties may include:

  • Clearing debris around outdoor equipment
  • Cleaning coils after heavy seasonal buildup
  • Replacing loaded or restrictive filters
  • Checking condensate drainage
  • Inspecting vents and outdoor penetrations
  • Testing airflow through the duct system
  • Improving whole-home filtration
  • Evaluating indoor humidity
  • Checking surge protection
  • Inspecting equipment after strong storms

Routine attention can prevent a small maintenance concern from becoming a breakdown during peak weather. It also gives technicians an opportunity to identify worn parts before Henderson’s summer heat or winter cold places the system under full demand.

Don’t let a sudden winter freeze leave your pre-2000 home without heat. Call A+ Derr at 833-232-4328 for fast furnace repair and winter system tune-ups in 42420.

Electrical Panel Upgrades & Rewiring for Henderson Homes

A home built before 2000 may now support equipment its original electrical system was never expected to handle. Central HVAC, large kitchen appliances, multiple televisions, computers, security equipment, and electric vehicles can place sustained demand on panels and circuits.

Common signs of an electrical capacity problem include:

  • Breakers that trip repeatedly
  • Lights that flicker when equipment starts
  • Warm or discolored outlets
  • A panel with no open circuit spaces
  • Extension cords used as permanent wiring
  • Outlets that no longer hold plugs
  • Too few circuits for a remodeled kitchen
  • No practical connection for an EV charger
  • Frequent power interruptions during storms
  • Older wiring discovered during renovations

A+ Derr provides electrical repair, wiring, panel and meter upgrades, service upgrades, circuit and outlet work, lighting, generators, surge protection, and EV charger installation. Before connecting new equipment, our electricians check the panel, service capacity, wiring condition, and power requirements.

They were very friendly and helpful. They did a good job. New electrical box and some new wiring.

Linda F.

Experiencing frequent breaker trips or planning an EV charger installation? Call 833-232-4328 for safe electrical panel upgrades and generator services in Henderson!

Whole-House Generator Installation & Power Backup in Henderson, KY

Storms moving through the Ohio River Valley can interrupt power with little warning. An outage can affect far more than lights. It may stop heating equipment, refrigeration, internet service, medical devices, security systems, and sump pumps.

A professionally planned generator can keep selected circuits operating until utility service returns. The right setup depends on which systems you consider essential, how much power they require, and whether the existing electrical service can support the installation.

Whole-home surge protection provides a different type of defense. It helps protect HVAC controls, appliances, electronics, and connected devices from voltage spikes caused by utility changes or storm activity. A+ Derr can evaluate both backup power and surge protection as part of a broader electrical plan.

Henderson Plumbing Services: Leak Repair, Water Heaters & Repiping

Many Henderson homes have been updated one room at a time. A remodeled bathroom may still connect to older drain lines. New kitchen fixtures may depend on supply piping installed years earlier. These mixed systems can make recurring problems harder to trace.

Plumbing concerns we address include:

  • Pressure dropping at several fixtures
  • Drains that clog again after clearing
  • Water stains beneath cabinets or ceilings
  • Pipes leaking behind finished walls
  • Toilets that run or clog repeatedly
  • Water heaters producing less hot water
  • Garbage disposals that jam or leak
  • Sump pumps that fail during wet weather
  • Sewer lines with recurring flow issues
  • Older piping that needs replacement

A+ Derr handles plumbing repair, installation, maintenance, water heaters, tankless systems, sump pumps, sewer and drain work, toilets, disposals, repiping, and water filtration. Our plumbers follow the symptoms through the connected system so the repair addresses where the problem begins.

Tired of recurring drain backups and low water pressure behind your remodeled fixtures? Call our Henderson plumbing experts at 833-232-4328 today!

Why Henderson Homeowners Choose A+ Derr

A+ Derr provides regular service throughout Henderson rather than entering the city only for occasional appointments. With technicians crossing from the Evansville area on most days, homeowners have access to a team familiar with ZIP code 42420 and the conditions that affect its properties.

Customers choose A+ Derr for:

  • Regular coverage throughout Henderson
  • Experience with pre-2000 housing
  • Support for newer outer-city homes
  • HVAC, plumbing, and electrical service
  • Emergency heating and cooling assistance
  • Generator and surge protection options
  • Commercial service along US 41
  • Clean and professional project work

Schedule Home Services in Henderson, KY

If your AC leaves the house damp even after it cycles off, your breaker panel struggles to handle added appliances, a drain keeps clogging despite repeated clearing, or your heat cuts out on a cold Henderson night, A+ Derr is ready to step in. Our team works across 42420 with solutions tailored to the way local homes are built and used.

“The crew was very polite and friendly. They did a great job and cleaned up when they were finished. Great company.”

Melissa G.

Call 833-232-4328 or reach out online to set up service for your Henderson property and get help with your heating, cooling, plumbing, or electrical needs.

Frequently Asked Questions For Henderson Homeowners

Ohio River Valley humidity often drives moisture levels up, forcing your air conditioner to cool without properly drying the air. Pairing your system with a whole-home dehumidifier or adjusting your airflow removes excess moisture and eliminates that sticky feeling.

Leaves, seed pods, and heavy pollen from nearby wooded areas clog outdoor condenser coils and restrict airflow. This causes your equipment to work harder and raises utility bills. Routine coil cleaning and high-efficiency air filters keep your system running smoothly.

Homes built before 2000 were not engineered for modern power demands like central HVAC, EV chargers, and high-wattage appliances. Upgrading your panel prevents frequent breaker trips, flickering lights, and potential safety hazards.

Updated fixtures are frequently attached to older supply lines or drain pipes hidden behind walls. If those legacy pipes are restrictive or corroded, recurring clogs and low water pressure will persist until the connected system is addressed.

Severe Ohio River Valley storms can cause power outages and voltage spikes. Whole-home surge protection shields sensitive electronics and HVAC controls, while a standby generator keeps critical appliances, lights, and sump pumps running.

Yes. We provide complete heating, cooling, plumbing, and electrical solutions for residential neighborhoods and commercial businesses along US 41 and throughout ZIP code 42420.

Page Updated on August 19, 2026

Recent Jobs and Reviews in Henderson, KY

Job Locations and Reviews

Responded to no-cooling call on property with two HVAC systems over 10 years old. Inspected rooftop condenser unit with non-operational outdoor fan and second system with reduced airflow performance. Evaluated both units for repair feasibility, documented equipment condition with photos showing rooftop installation and basement furnace/water heater setup. Provided system replacement options and water heater replacement quote as requested due to age and condition of existing equipment.
Responded to no-cooling call on property with two HVAC systems over 10 years old. Inspected rooftop condenser unit with non-operational outdoor fan and second system with reduced airflow performance. Evaluated both units for repair feasibility, documented equipment condition with photos showing rooftop installation and basement furnace/water heater setup. Provided system replacement options and water heater replacement quote as requested due to age and condition of existing equipment.
Shawn M.
Shawn M. Checked in
Responded to no-cooling call on property with two HVAC systems over 10 years old. Inspected rooftop condenser unit with non-operational outdoor fan and second system with reduced airflow performance. Evaluated both units for repair feasibility, documented equipment condition with photos showing rooftop installation and basement furnace/water heater setup. Provided system replacement options and water heater replacement quote as requested due to age and condition of existing equipment.
Henderson, KY 42420
Completed full HVAC system installation of a 2-ton, 18 SEER/97% AFUE unit in residential mechanical closet. Installed new air handler with proper PVC condensate drainage and venting through ceiling penetration, secured all refrigerant lines and electrical connections per manufacturer specifications. Performed system startup, refrigerant charge verification using manifold gauges with micron readings confirming proper evacuation and system tightness, and conducted full operational testing to ensure heating and cooling functions meet design parameters.
Completed full HVAC system installation of a 2-ton, 18 SEER/97% AFUE unit in residential mechanical closet. Installed new air handler with proper PVC condensate drainage and venting through ceiling penetration, secured all refrigerant lines and electrical connections per manufacturer specifications. Performed system startup, refrigerant charge verification using manifold gauges with micron readings confirming proper evacuation and system tightness, and conducted full operational testing to ensure heating and cooling functions meet design parameters.
Adam M.
Adam M. Checked in
Completed full HVAC system installation of a 2-ton, 18 SEER/97% AFUE unit in residential mechanical closet. Installed new air handler with proper PVC condensate drainage and venting through ceiling penetration, secured all refrigerant lines and electrical connections per manufacturer specifications. Performed system startup, refrigerant charge verification using manifold gauges with micron readings confirming proper evacuation and system tightness, and conducted full operational testing to ensure heating and cooling functions meet design parameters.
Henderson, KY 42420
Henderson, KY - Responded to callback on 3-month-old system with water leak in basement. Found approximately 1-2 inches of water accumulation around unit caused by failed plastic shutoff valve fitting. Removed defective valve component, extracted standing water from affected area, and installed replacement shutoff valve with proper threading and seal integrity. Tested system operation and verified no additional leaks present. No property damage reported.
Brent D.
Brent D. Checked in
Responded to callback on 3-month-old system with water leak in basement. Found approximately 1-2 inches of water accumulation around unit caused by failed plastic shutoff valve fitting. Removed defective valve component, extracted standing water from affected area, and installed replacement shutoff valve with proper threading and seal integrity. Tested system operation and verified no additional leaks present. No property damage reported.
Henderson, KY 42420
Responded to no-cooling call on 5-year-old residential HVAC system. Found outdoor condenser fan attempting to start then immediately shutting down in rapid cycling pattern. Indoor blower motor operating normally with adequate airflow. Diagnosed failed run capacitor on condenser fan motor causing hard start condition and thermal overload protection activation. Replaced dual-run capacitor with OEM-equivalent component, verified proper microfarad rating and voltage specifications. Tested system operation through complete cooling cycle, confirmed condenser fan motor startup and continuous operation, verified compressor engagement and proper amperage draw on both legs. System restored to full cooling capacity with thermostat differential returning to normal range.
Responded to no-cooling call on 5-year-old residential HVAC system. Found outdoor condenser fan attempting to start then immediately shutting down in rapid cycling pattern. Indoor blower motor operating normally with adequate airflow. Diagnosed failed run capacitor on condenser fan motor causing hard start condition and thermal overload protection activation. Replaced dual-run capacitor with OEM-equivalent component, verified proper microfarad rating and voltage specifications. Tested system operation through complete cooling cycle, confirmed condenser fan motor startup and continuous operation, verified compressor engagement and proper amperage draw on both legs. System restored to full cooling capacity with thermostat differential returning to normal range.
Shawn M.
Shawn M. Checked in
Responded to no-cooling call on 5-year-old residential HVAC system. Found outdoor condenser fan attempting to start then immediately shutting down in rapid cycling pattern. Indoor blower motor operating normally with adequate airflow. Diagnosed failed run capacitor on condenser fan motor causing hard start condition and thermal overload protection activation. Replaced dual-run capacitor with OEM-equivalent component, verified proper microfarad rating and voltage specifications. Tested system operation through complete cooling cycle, confirmed condenser fan motor startup and continuous operation, verified compressor engagement and proper amperage draw on both legs. System restored to full cooling capacity with thermostat differential returning to normal range.
Henderson, KY 42420
Conducted comprehensive replacement estimate for existing HVAC system that failed overnight. Evaluated outdoor condenser unit with weathered cylindrical design and indoor ventilation components showing dust accumulation. Assessed system configuration, ductwork accessibility, electrical infrastructure including exterior conduit box, equipment placement on concrete pad, and overall installation requirements to provide complete replacement options for non-functional heating and cooling system.
Conducted comprehensive replacement estimate for existing HVAC system that failed overnight. Evaluated outdoor condenser unit with weathered cylindrical design and indoor ventilation components showing dust accumulation. Assessed system configuration, ductwork accessibility, electrical infrastructure including exterior conduit box, equipment placement on concrete pad, and overall installation requirements to provide complete replacement options for non-functional heating and cooling system.
Nick B.
Nick B. Checked in
Conducted comprehensive replacement estimate for existing HVAC system that failed overnight. Evaluated outdoor condenser unit with weathered cylindrical design and indoor ventilation components showing dust accumulation. Assessed system configuration, ductwork accessibility, electrical infrastructure including exterior conduit box, equipment placement on concrete pad, and overall installation requirements to provide complete replacement options for non-functional heating and cooling system.
Henderson, KY 42420
# HVAC Complete System Installation

Successfully completed installation of a 4-ton, 17 SEER zoned HVAC system with 97% AFUE heating capability. The project included both indoor and outdoor equipment installation with proper refrigerant line routing and electrical connections.

## Indoor Installation

Installed air handler unit with metallic silver finish in utility area, positioned vertically against interior wall. Mounted large white pyramidal plenum chamber above air handler to facilitate proper airflow distribution throughout the ductwork system. Ran dual white PVC condensate drain lines vertically alongside equipment to ensure proper drainage and prevent water damage. Installed wall-mounted white rectangular air return vent for adequate system circulation.

Connected dark-colored heating unit with exposed copper refrigerant lines, properly insulated with black coating. Completed all electrical connections and verified proper component integration. Ensured all manufacturer labels a
# HVAC Complete System Installation

Successfully completed installation of a 4-ton, 17 SEER zoned HVAC system with 97% AFUE heating capability. The project included both indoor and outdoor equipment installation with proper refrigerant line routing and electrical connections.

## Indoor Installation

Installed air handler unit with metallic silver finish in utility area, positioned vertically against interior wall. Mounted large white pyramidal plenum chamber above air handler to facilitate proper airflow distribution throughout the ductwork system. Ran dual white PVC condensate drain lines vertically alongside equipment to ensure proper drainage and prevent water damage. Installed wall-mounted white rectangular air return vent for adequate system circulation.

Connected dark-colored heating unit with exposed copper refrigerant lines, properly insulated with black coating. Completed all electrical connections and verified proper component integration. Ensured all manufacturer labels a
Ian H.
Ian H. Checked in
# HVAC Complete System Installation Successfully completed installation of a 4-ton, 17 SEER zoned HVAC system with 97% AFUE heating capability. The project included both indoor and outdoor equipment installation with proper refrigerant line routing and electrical connections. ## Indoor Installation Installed air handler unit with metallic silver finish in utility area, positioned vertically against interior wall. Mounted large white pyramidal plenum chamber above air handler to facilitate proper airflow distribution throughout the ductwork system. Ran dual white PVC condensate drain lines vertically alongside equipment to ensure proper drainage and prevent water damage. Installed wall-mounted white rectangular air return vent for adequate system circulation. Connected dark-colored heating unit with exposed copper refrigerant lines, properly insulated with black coating. Completed all electrical connections and verified proper component integration. Ensured all manufacturer labels a
Henderson, KY 42420
Responded to no cooling call on 5-year-old residential HVAC system that would not power on. Upon arrival, diagnosed and resolved thermostat issue at Honeywell Home unit. System was successfully restored to operational status with proper airflow and cooling performance. Post-repair diagnostics confirmed R-410A refrigerant system operating within manufacturer specifications: return air at 78.3°F dry bulb with 60.6% relative humidity, supply air at 58.4°F producing 19.9°F temperature split, suction pressure at 142.6 PSIG with proper superheat, and liquid line pressure at 317.2 PSIG with adequate subcooling. System tested and left in full cooling operation with tenant satisfied.
Responded to no cooling call on 5-year-old residential HVAC system that would not power on. Upon arrival, diagnosed and resolved thermostat issue at Honeywell Home unit. System was successfully restored to operational status with proper airflow and cooling performance. Post-repair diagnostics confirmed R-410A refrigerant system operating within manufacturer specifications: return air at 78.3°F dry bulb with 60.6% relative humidity, supply air at 58.4°F producing 19.9°F temperature split, suction pressure at 142.6 PSIG with proper superheat, and liquid line pressure at 317.2 PSIG with adequate subcooling. System tested and left in full cooling operation with tenant satisfied.
Craig U.
Craig U. Checked in
Responded to no cooling call on 5-year-old residential HVAC system that would not power on. Upon arrival, diagnosed and resolved thermostat issue at Honeywell Home unit. System was successfully restored to operational status with proper airflow and cooling performance. Post-repair diagnostics confirmed R-410A refrigerant system operating within manufacturer specifications: return air at 78.3°F dry bulb with 60.6% relative humidity, supply air at 58.4°F producing 19.9°F temperature split, suction pressure at 142.6 PSIG with proper superheat, and liquid line pressure at 317.2 PSIG with adequate subcooling. System tested and left in full cooling operation with tenant satisfied.
Henderson, KY 42420
Completed comprehensive equipment assessment for air conditioning system replacement estimate. Evaluated existing 13-year-old Carrier AC system, including indoor air handler unit mounted in utility closet and associated refrigerant lines, condensate drainage, and electrical connections. Documented current system configuration with furnace and water heater placement in mechanical closet. Inspected outdoor condensing unit age and condition. Photographed existing equipment installation, ductwork connections, and available workspace for replacement unit installation. Provided detailed replacement options and recommendations based on current system capacity requirements and home specifications.
Completed comprehensive equipment assessment for air conditioning system replacement estimate. Evaluated existing 13-year-old Carrier AC system, including indoor air handler unit mounted in utility closet and associated refrigerant lines, condensate drainage, and electrical connections. Documented current system configuration with furnace and water heater placement in mechanical closet. Inspected outdoor condensing unit age and condition. Photographed existing equipment installation, ductwork connections, and available workspace for replacement unit installation. Provided detailed replacement options and recommendations based on current system capacity requirements and home specifications.
Nick B.
Nick B. Checked in
Completed comprehensive equipment assessment for air conditioning system replacement estimate. Evaluated existing 13-year-old Carrier AC system, including indoor air handler unit mounted in utility closet and associated refrigerant lines, condensate drainage, and electrical connections. Documented current system configuration with furnace and water heater placement in mechanical closet. Inspected outdoor condensing unit age and condition. Photographed existing equipment installation, ductwork connections, and available workspace for replacement unit installation. Provided detailed replacement options and recommendations based on current system capacity requirements and home specifications.
Henderson, KY 42420
Performed comprehensive assessment of existing residential HVAC system for replacement estimate. Evaluated 40-year-old air conditioning unit located exterior to residence, documenting original equipment from 1980s-1990s era that has reached end of serviceable life. Inspected York furnace installation in interior utility space, noting condensation accumulation on vertical plenum component and flexible ductwork connections. Photographed existing equipment configuration including indoor air handler placement in confined utility area with wooden enclosure and outdoor condensing unit location accessible via rear alley approach. Documented current system specifications, installation conditions, and spatial constraints to provide accurate replacement equipment recommendations and installation requirements for complete air conditioning system upgrade.
Performed comprehensive assessment of existing residential HVAC system for replacement estimate. Evaluated 40-year-old air conditioning unit located exterior to residence, documenting original equipment from 1980s-1990s era that has reached end of serviceable life. Inspected York furnace installation in interior utility space, noting condensation accumulation on vertical plenum component and flexible ductwork connections. Photographed existing equipment configuration including indoor air handler placement in confined utility area with wooden enclosure and outdoor condensing unit location accessible via rear alley approach. Documented current system specifications, installation conditions, and spatial constraints to provide accurate replacement equipment recommendations and installation requirements for complete air conditioning system upgrade.
James W.
James W. Checked in
Performed comprehensive assessment of existing residential HVAC system for replacement estimate. Evaluated 40-year-old air conditioning unit located exterior to residence, documenting original equipment from 1980s-1990s era that has reached end of serviceable life. Inspected York furnace installation in interior utility space, noting condensation accumulation on vertical plenum component and flexible ductwork connections. Photographed existing equipment configuration including indoor air handler placement in confined utility area with wooden enclosure and outdoor condensing unit location accessible via rear alley approach. Documented current system specifications, installation conditions, and spatial constraints to provide accurate replacement equipment recommendations and installation requirements for complete air conditioning system upgrade.
Henderson, KY 42420
Conducted comprehensive replacement estimate for existing HVAC system including Airtemp condenser unit located on exterior concrete pad and attic air handler installation. Evaluated current system configuration, ductwork accessibility in attic space, refrigerant line routing, electrical disconnect placement, and equipment placement conditions to provide homeowner with complete system replacement options.
Conducted comprehensive replacement estimate for existing HVAC system including Airtemp condenser unit located on exterior concrete pad and attic air handler installation. Evaluated current system configuration, ductwork accessibility in attic space, refrigerant line routing, electrical disconnect placement, and equipment placement conditions to provide homeowner with complete system replacement options.
Nick B.
Nick B. Checked in
Conducted comprehensive replacement estimate for existing HVAC system including Airtemp condenser unit located on exterior concrete pad and attic air handler installation. Evaluated current system configuration, ductwork accessibility in attic space, refrigerant line routing, electrical disconnect placement, and equipment placement conditions to provide homeowner with complete system replacement options.
Henderson, KY 42420
Conducted comprehensive HVAC replacement estimate for non-functioning residential heating and cooling system located in basement mechanical room. Assessed existing greenish-gray furnace/air handler unit with associated ductwork and determined replacement requirements. Documented current equipment configuration including filtration system utilizing 16x25x1 Filtrete filter showing significant dust accumulation and debris buildup, indicating maintenance concerns with existing system.
Conducted comprehensive HVAC replacement estimate for non-functioning residential heating and cooling system located in basement mechanical room. Assessed existing greenish-gray furnace/air handler unit with associated ductwork and determined replacement requirements. Documented current equipment configuration including filtration system utilizing 16x25x1 Filtrete filter showing significant dust accumulation and debris buildup, indicating maintenance concerns with existing system.
Nick B.
Nick B. Checked in
Conducted comprehensive HVAC replacement estimate for non-functioning residential heating and cooling system located in basement mechanical room. Assessed existing greenish-gray furnace/air handler unit with associated ductwork and determined replacement requirements. Documented current equipment configuration including filtration system utilizing 16x25x1 Filtrete filter showing significant dust accumulation and debris buildup, indicating maintenance concerns with existing system.
Henderson, KY 42420
Conducted on-site evaluation for replacement of 10-year-old electric heat pump and electric furnace system. Documented existing electrical panel configuration and circuit breaker layout, photographed current 16x20x1 air filter installation in return air duct, and assessed overall HVAC system condition to provide comprehensive replacement estimate.
Conducted on-site evaluation for replacement of 10-year-old electric heat pump and electric furnace system. Documented existing electrical panel configuration and circuit breaker layout, photographed current 16x20x1 air filter installation in return air duct, and assessed overall HVAC system condition to provide comprehensive replacement estimate.
Nick B.
Nick B. Checked in
Conducted on-site evaluation for replacement of 10-year-old electric heat pump and electric furnace system. Documented existing electrical panel configuration and circuit breaker layout, photographed current 16x20x1 air filter installation in return air duct, and assessed overall HVAC system condition to provide comprehensive replacement estimate.
Henderson, KY 42420
Responded to no cooling call on 22-year-old system with complete loss of power and non-responsive thermostat. Upon arrival, confirmed outdoor condenser unit and indoor air handler had no power. Customer reported possible wire damage near outdoor unit from weed trimming activity. Traced low-voltage wiring from thermostat through air handler to outdoor disconnect and located severed thermostat wire approximately 18 inches from condenser unit where landscape maintenance had occurred. Repaired damaged 18/5 thermostat control wire, restored all connections, and verified proper voltage at thermostat base and equipment terminals. Cycled system through complete operational test including compressor startup, blower motor function, and thermostat communication. All components responded correctly with normal amp draws. System restored to full cooling operation with proper airflow and refrigerant cycling. Advised property owner of repair completion and recommended care around low-voltage wiring du
Responded to no cooling call on 22-year-old system with complete loss of power and non-responsive thermostat. Upon arrival, confirmed outdoor condenser unit and indoor air handler had no power. Customer reported possible wire damage near outdoor unit from weed trimming activity. Traced low-voltage wiring from thermostat through air handler to outdoor disconnect and located severed thermostat wire approximately 18 inches from condenser unit where landscape maintenance had occurred. Repaired damaged 18/5 thermostat control wire, restored all connections, and verified proper voltage at thermostat base and equipment terminals. Cycled system through complete operational test including compressor startup, blower motor function, and thermostat communication. All components responded correctly with normal amp draws. System restored to full cooling operation with proper airflow and refrigerant cycling. Advised property owner of repair completion and recommended care around low-voltage wiring du
Cameron N.
Cameron N. Checked in
Responded to no cooling call on 22-year-old system with complete loss of power and non-responsive thermostat. Upon arrival, confirmed outdoor condenser unit and indoor air handler had no power. Customer reported possible wire damage near outdoor unit from weed trimming activity. Traced low-voltage wiring from thermostat through air handler to outdoor disconnect and located severed thermostat wire approximately 18 inches from condenser unit where landscape maintenance had occurred. Repaired damaged 18/5 thermostat control wire, restored all connections, and verified proper voltage at thermostat base and equipment terminals. Cycled system through complete operational test including compressor startup, blower motor function, and thermostat communication. All components responded correctly with normal amp draws. System restored to full cooling operation with proper airflow and refrigerant cycling. Advised property owner of repair completion and recommended care around low-voltage wiring du
Henderson, KY 42420
Conducted estimate for upstairs mini split system replacement at residential property. Customer currently has operational HVAC system and is seeking budget-friendly ductless solution for second floor. Assessed existing electrical infrastructure including main panel location in basement utility area and evaluated outdoor condensing unit placement adjacent to building foundation. Documented electrical capacity, reviewed available mounting locations for indoor air handlers, and discussed financing options to proceed with installation.
Conducted estimate for upstairs mini split system replacement at residential property. Customer currently has operational HVAC system and is seeking budget-friendly ductless solution for second floor. Assessed existing electrical infrastructure including main panel location in basement utility area and evaluated outdoor condensing unit placement adjacent to building foundation. Documented electrical capacity, reviewed available mounting locations for indoor air handlers, and discussed financing options to proceed with installation.
Nick B.
Nick B. Checked in
Conducted estimate for upstairs mini split system replacement at residential property. Customer currently has operational HVAC system and is seeking budget-friendly ductless solution for second floor. Assessed existing electrical infrastructure including main panel location in basement utility area and evaluated outdoor condensing unit placement adjacent to building foundation. Documented electrical capacity, reviewed available mounting locations for indoor air handlers, and discussed financing options to proceed with installation.
Henderson, KY 42420
Conducted comprehensive assessment of existing HVAC system for replacement estimate. Documented current equipment configuration including wall-mounted control board with visible circuit components, terminal connections, and wiring layout. Photographed mechanical room setup featuring existing heating unit on wooden platform, associated electrical panels, copper refrigerant lines, gas supply connections, and air filtration components to provide detailed scope for Green A+ rated replacement system proposal.
Conducted comprehensive assessment of existing HVAC system for replacement estimate. Documented current equipment configuration including wall-mounted control board with visible circuit components, terminal connections, and wiring layout. Photographed mechanical room setup featuring existing heating unit on wooden platform, associated electrical panels, copper refrigerant lines, gas supply connections, and air filtration components to provide detailed scope for Green A+ rated replacement system proposal.
Shawn M.
Shawn M. Checked in
Conducted comprehensive assessment of existing HVAC system for replacement estimate. Documented current equipment configuration including wall-mounted control board with visible circuit components, terminal connections, and wiring layout. Photographed mechanical room setup featuring existing heating unit on wooden platform, associated electrical panels, copper refrigerant lines, gas supply connections, and air filtration components to provide detailed scope for Green A+ rated replacement system proposal.
Henderson, KY 42420
Henderson, KY - Responded to callback for non-operational condenser following recent condensate pump replacement. Upon arrival, verified previous repair work and diagnosed issue with outdoor unit. Inspected and tested capacitor, confirmed proper electrical connections, and restored full system operation. Cycled unit multiple times to verify reliable performance with proper temperature differential across evaporator coil.
Ryan O.
Ryan O. Checked in
Responded to callback for non-operational condenser following recent condensate pump replacement. Upon arrival, verified previous repair work and diagnosed issue with outdoor unit. Inspected and tested capacitor, confirmed proper electrical connections, and restored full system operation. Cycled unit multiple times to verify reliable performance with proper temperature differential across evaporator coil.
Henderson, KY 42420
Completed Platinum Level annual maintenance on single-system residential HVAC unit with 16x25x5 filter configuration. Performed comprehensive inspection of control board components, terminal connections, and electrical wiring; verified proper operation of relays and control circuits. Documented system condition and confirmed all mechanical and electrical components functioning within normal parameters.
Completed Platinum Level annual maintenance on single-system residential HVAC unit with 16x25x5 filter configuration. Performed comprehensive inspection of control board components, terminal connections, and electrical wiring; verified proper operation of relays and control circuits. Documented system condition and confirmed all mechanical and electrical components functioning within normal parameters.
Brent D.
Brent D. Checked in
Completed Platinum Level annual maintenance on single-system residential HVAC unit with 16x25x5 filter configuration. Performed comprehensive inspection of control board components, terminal connections, and electrical wiring; verified proper operation of relays and control circuits. Documented system condition and confirmed all mechanical and electrical components functioning within normal parameters.
Henderson, KY 42420
Conducted comprehensive site evaluation for heat pump replacement installation in barn structure. Assessed existing electrical infrastructure including 200-amp service panel with adequate breaker capacity and verified proper grounding and wiring configurations to support new heat pump system requirements. Documented utility room layout, available mounting locations, and clearance specifications for indoor air handler placement near existing mechanical equipment and utility sink area. Photographed electrical service panel to confirm compatibility with heat pump electrical demands and documented spatial constraints within corrugated metal building to ensure proper equipment sizing and installation accessibility for replacement system.
Conducted comprehensive site evaluation for heat pump replacement installation in barn structure. Assessed existing electrical infrastructure including 200-amp service panel with adequate breaker capacity and verified proper grounding and wiring configurations to support new heat pump system requirements. Documented utility room layout, available mounting locations, and clearance specifications for indoor air handler placement near existing mechanical equipment and utility sink area. Photographed electrical service panel to confirm compatibility with heat pump electrical demands and documented spatial constraints within corrugated metal building to ensure proper equipment sizing and installation accessibility for replacement system.
Nick B.
Nick B. Checked in
Conducted comprehensive site evaluation for heat pump replacement installation in barn structure. Assessed existing electrical infrastructure including 200-amp service panel with adequate breaker capacity and verified proper grounding and wiring configurations to support new heat pump system requirements. Documented utility room layout, available mounting locations, and clearance specifications for indoor air handler placement near existing mechanical equipment and utility sink area. Photographed electrical service panel to confirm compatibility with heat pump electrical demands and documented spatial constraints within corrugated metal building to ensure proper equipment sizing and installation accessibility for replacement system.
Henderson, KY 42420
Responded to no cooling complaint on residential HVAC system. Upon inspection, diagnosed failed blower motor assembly with compromised blower wheel showing excessive dirt accumulation and motor failure. Removed blower motor and wheel assembly from air handler for replacement. Documented model and serial number information, took measurements of ductwork clearances, and photographed failed components. Parts have been ordered for follow-up installation requiring approximately 90 minutes for completion.
Responded to no cooling complaint on residential HVAC system. Upon inspection, diagnosed failed blower motor assembly with compromised blower wheel showing excessive dirt accumulation and motor failure. Removed blower motor and wheel assembly from air handler for replacement. Documented model and serial number information, took measurements of ductwork clearances, and photographed failed components. Parts have been ordered for follow-up installation requiring approximately 90 minutes for completion.
Ryan O.
Ryan O. Checked in
Responded to no cooling complaint on residential HVAC system. Upon inspection, diagnosed failed blower motor assembly with compromised blower wheel showing excessive dirt accumulation and motor failure. Removed blower motor and wheel assembly from air handler for replacement. Documented model and serial number information, took measurements of ductwork clearances, and photographed failed components. Parts have been ordered for follow-up installation requiring approximately 90 minutes for completion.
Henderson, KY 42420
Henderson, KY - Responded to no-cooling complaint following recent power outage. Performed system diagnostics and identified low refrigerant charge as primary issue affecting cooling performance. System requires additional R22 refrigerant to properly balance and restore optimal operation; scheduled follow-up visit to complete refrigerant charge and verify system performance.
Ryan O.
Ryan O. Checked in
Responded to no-cooling complaint following recent power outage. Performed system diagnostics and identified low refrigerant charge as primary issue affecting cooling performance. System requires additional R22 refrigerant to properly balance and restore optimal operation; scheduled follow-up visit to complete refrigerant charge and verify system performance.
Henderson, KY 42420
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What To Expect

Discover The A+ Derr Difference

24/7 Heating & Cooling Repairs​

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians​

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee​

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

Locally Owned & Operated​

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business​

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

24/7 Heating & Cooling Repairs​

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians​

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee​

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

Locally Owned & Operated​

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business​

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

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Our Reviews

See What Your Neighbors Are Saying

I would recommend A+ Derr and their staff any day! Best service I have ever had! Go to them for your Heating and Cooling needs. You will not be disappointed.

Barbara C.

Barbara C.

Very good service. Knowledgeable HVAC experts always keeping us cool in the summer and warm all winter. This is a great team of professionals from start to finish.

Craig B.

Craig B.

Amazing level of courtesy and professionalism. Communication was great and the price was more than reasonable. Highly recommend.

Chip M.

Chip M.

Guys came and installed two full systems at the house. Respectful, cleaned up after themselves and answered any and all questions. Thank you again!! Definitely recommend!

Jason H.

Jason H.

Very knowledgeable and courteous. Toured me through all the functions of the new unit. Completed work very neatly and respectfully. Would recommend to anyone.

Derek S.

Derek S.