Expert Heating, Cooling, Plumbing & Electrical Services in Chandler, IN - A+ Derr Heating & Cooling
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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Expert Heating, Cooling, Plumbing & Electrical Services in Chandler, IN

A+ Derr Tech performing ervice

We’ve all been there—something breaks in the house, whether it’s the AC on a hot day, a faucet that won’t stop dripping, or a breaker that keeps tripping—and suddenly your whole routine is out the window. That’s where A+ Derr Heating, Cooling, Plumbing, & Electrical steps in. We are your reliable, no-stress solution for heating, cooling, plumbing, and electrical services in Chandler. Our licensed professionals show up on time, talk to you like a neighbor, and focus on getting things back to normal without the upsells or jargon. It’s about peace of mind, plain and simple—and that’s what we’re here to deliver. Call our team today at 833-232-4328 or contact us online to get more information. 

Trusted Heating Services in Chandler, IN

Winters in Indiana can be unpredictable, bringing everything from freezing rain to heavy snow. That’s why having a reliable heating system isn’t just a luxury—it’s a necessity. Our Chandler heating services are built around fast, reliable results:

  • Furnace Repair & Installation: If your furnace is acting up or has stopped working completely, we’ll find the issue and fix it—or help you upgrade to a high-efficiency model that saves on energy bills.
  • Heat Pump Services: Looking for efficient heating and cooling in one unit? We install and service heat pumps in Chandler that help regulate your home’s temperature year-round.
  • Boiler Repair & Maintenance: Our team works on steam and hot water boilers, keeping your home’s heating system safe and functional.
  • Geothermal Heating Systems: Tap into sustainable energy from the earth with a geothermal system. It’s eco-friendly, energy-efficient, and built to last.
  • Emergency Heating Services: Cold air pouring from your vents in the middle of the night? Call us—we’re ready when you need urgent repairs.

Chandler Air Conditioning Services 

When Indiana’s heat and humidity crank up, you need an air conditioning system that won’t let you down. At A+ Derr Heating, Cooling, Plumbing, & Electrical, we don’t just install and repair AC units—we help you stay cool without the stress. Whether your system’s making odd noises or just can’t keep up, we’ve got dependable, personalized solutions:

  • AC Repair: From warm airflow to odd noises, we handle all kinds of issues to get your system running smoothly again.
  • AC Installation & Replacement in Chandler: If it’s time for a new unit, we’ll help you choose one that fits your home and budget—then install it to perfection.
  • Ductless Mini-Split Systems: These are ideal for home offices, additions, or areas with no existing ductwork. We handle everything from installation to repairs.
  • AC Maintenance: Regular ac maintenance in Chandler extends the life of your system and helps you avoid mid-summer breakdowns.

Beneficial Indoor Air Quality Services in Chandler

Did you know the air inside your home could be more polluted than the air outside? We offer Chandler air quality services specifically designed to help your family breathe easier:

Whole-Home Plumbing Services in Chandler, IN

Plumber fixing white sink pipe with adjustable wrench

When your plumbing fails, you need someone who can fix it fast—and treat your home with respect. Our Chandler Plumbers are just a call away:

Water Heater Services

Hot water gone cold? We’ll repair your existing water heater or help you choose a reliable tank or tankless model that fits your family’s needs.

Drain Cleaning & Sewer Solutions

Say goodbye to stubborn clogs and slow drains. We also provide sewer line inspections to catch problems early before they become costly.

Fixture Installation

Whether it’s a new faucet, toilet, or shower, our team installs plumbing fixtures with precision and care to ensure long-lasting performance.

Pipe Repair & Leak Detection

Our plumbers use modern tools to find and fix hidden leaks, preventing costly water damage and protecting your home’s foundation.

Sump Pump Services

Protect your Chandler basement from flooding with sump pump installation, replacement, or repair. We keep your home dry and safe during unexpected weather.

Garbage Disposal Services

From jammed disposals to kitchen upgrades, we repair and install garbage disposals that keep your kitchen running smoothly.

Plumbing Repair & Installation

Need a quick repair or a full plumbing system installed? We’ve got the tools, experience, and attitude to handle it all—efficiently and respectfully.

Electrical Services in Chandler for Modern Living

Your home’s electrical system should keep up with your lifestyle—not slow it down. We offer a full range of Chandler electrical services designed for safety, function, and future-proofing:

  1. Electrical Panel Upgrades: Make sure your system can handle today’s tech with an upgraded panel.
  2. Outlet & Switch Services: Whether you need a repair, a new install, or smart switch integration, we’ll take care of it.
  3. Lighting Installation: Enhance every space with indoor and outdoor lighting, including fans and smart light systems.
  4. Whole-Home Surge Protection: Protect your electronics from voltage spikes with a professionally installed surge protector.
  5. EV Charger Installation: Charge your electric vehicle at home with a fast, reliable Level 2 charger.
  6. Backup Generator Installation: Power outages happen—make sure you’re ready with a generator that keeps the essentials running.
  7. Service Upgrades: Still using an outdated panel or wiring system? Our service upgrades bring your electrical setup up to modern standards so you can power more devices safely and reliably.
  8. Equipment Repair: From faulty outlets to aging electrical fixtures, we repair worn-out components quickly and professionally so your home keeps running without skipping a beat.
  9. Light Commercial Services: Running a small business or managing a local property? We provide light commercial electrical services to keep your workplace safe, functional, and up to code.

Why Chandler, IN Homeowners Trust A+ Derr 

We know you have options when it comes to home service companies. That’s why we go the extra mile to deliver unmatched service with a personal touch. Here’s what makes A+ Derr different:

  • Transparent Pricing: No hidden fees, no sales gimmicks. Just clear, honest pricing.
  • Prompt Scheduling: We respect your time and show up when we say we will.
  • Certified Technicians: Our pros are licensed, experienced, and passionate about what they do.
  • Clean, Respectful Work: We wear shoe covers, clean up after ourselves, and leave your home better than we found it.
  • Fully Stocked Vehicles: We show up ready to work, so most problems get fixed on the first visit.

Schedule Trusted Home Services in Chandler, IN

Ready to take the stress out of home repairs? From emergency calls to everyday maintenance, A+ Derr Heating, Cooling, Plumbing, & Electrical has your back. Call 833-232-4328 now to schedule your heating, cooling, plumbing, or electrical service in Chandler, IN—and get peace of mind from a team that truly cares.

Recent Jobs and Reviews in Chandler, IN

Job Locations and Reviews

# HVAC Maintenance Summary

Completed platinum-level preventive maintenance on a 6-year-old residential HVAC system during the first scheduled visit of the service agreement. Performed comprehensive inspection of the evaporator coil assembly, which showed normal frost accumulation consistent with operational cooling cycle. Measured supply air temperature at 71.82°F using calibrated digital thermometer to verify proper system performance. Inspected A-frame copper coil configuration, refrigerant lines, and electrical connections within the air handler cabinet. Replaced 20x20x5 air filter as part of routine maintenance protocol. All mechanical and electrical components inspected and found to be operating within manufacturer specifications. System confirmed to be functioning properly with no deficiencies noted.
# HVAC Maintenance Summary

Completed platinum-level preventive maintenance on a 6-year-old residential HVAC system during the first scheduled visit of the service agreement. Performed comprehensive inspection of the evaporator coil assembly, which showed normal frost accumulation consistent with operational cooling cycle. Measured supply air temperature at 71.82°F using calibrated digital thermometer to verify proper system performance. Inspected A-frame copper coil configuration, refrigerant lines, and electrical connections within the air handler cabinet. Replaced 20x20x5 air filter as part of routine maintenance protocol. All mechanical and electrical components inspected and found to be operating within manufacturer specifications. System confirmed to be functioning properly with no deficiencies noted.
Michael H.
Michael H. Checked in
# HVAC Maintenance Summary Completed platinum-level preventive maintenance on a 6-year-old residential HVAC system during the first scheduled visit of the service agreement. Performed comprehensive inspection of the evaporator coil assembly, which showed normal frost accumulation consistent with operational cooling cycle. Measured supply air temperature at 71.82°F using calibrated digital thermometer to verify proper system performance. Inspected A-frame copper coil configuration, refrigerant lines, and electrical connections within the air handler cabinet. Replaced 20x20x5 air filter as part of routine maintenance protocol. All mechanical and electrical components inspected and found to be operating within manufacturer specifications. System confirmed to be functioning properly with no deficiencies noted.
Chandler, IN 47610
Completed installation of a 2.5 ton Lennox 15.5 SEER upflow air conditioning system with matching evaporator coil at residential property. The outdoor condensing unit was positioned on a concrete pad against the exterior wall with proper electrical disconnect installed, and the system was commissioned and verified operational.
Completed installation of a 2.5 ton Lennox 15.5 SEER upflow air conditioning system with matching evaporator coil at residential property. The outdoor condensing unit was positioned on a concrete pad against the exterior wall with proper electrical disconnect installed, and the system was commissioned and verified operational.
Tanner E.
Tanner E. Checked in
Completed installation of a 2.5 ton Lennox 15.5 SEER upflow air conditioning system with matching evaporator coil at residential property. The outdoor condensing unit was positioned on a concrete pad against the exterior wall with proper electrical disconnect installed, and the system was commissioned and verified operational.
Chandler, IN 47610
Responded to no cooling call with system completely off. Accessed blower motor assembly in garage per customer instructions. Diagnosed failed blower motor preventing system operation and replaced motor assembly to restore airflow and cooling function.
Responded to no cooling call with system completely off. Accessed blower motor assembly in garage per customer instructions. Diagnosed failed blower motor preventing system operation and replaced motor assembly to restore airflow and cooling function.
Craig U.
Craig U. Checked in
Responded to no cooling call with system completely off. Accessed blower motor assembly in garage per customer instructions. Diagnosed failed blower motor preventing system operation and replaced motor assembly to restore airflow and cooling function.
Chandler, IN 47610
Completed comprehensive HVAC replacement estimate for non-operational residential system. Evaluated existing outdoor condenser unit with cylindrical configuration and beige housing positioned against exterior wall with electrical disconnect and refrigerant line connections, as well as indoor furnace equipment including blower assembly and control components. Provided homeowner with detailed replacement options and specifications for complete system upgrade.
Completed comprehensive HVAC replacement estimate for non-operational residential system. Evaluated existing outdoor condenser unit with cylindrical configuration and beige housing positioned against exterior wall with electrical disconnect and refrigerant line connections, as well as indoor furnace equipment including blower assembly and control components. Provided homeowner with detailed replacement options and specifications for complete system upgrade.
James W.
James W. Checked in
Completed comprehensive HVAC replacement estimate for non-operational residential system. Evaluated existing outdoor condenser unit with cylindrical configuration and beige housing positioned against exterior wall with electrical disconnect and refrigerant line connections, as well as indoor furnace equipment including blower assembly and control components. Provided homeowner with detailed replacement options and specifications for complete system upgrade.
Chandler, IN 47610
Completed full HVAC system installation featuring a 3-ton, 17 SEER Lennox air conditioning unit. The outdoor condenser was professionally mounted on a concrete pad against the building exterior with proper electrical disconnect box and conduit installation. System was charged with refrigerant, tested using calibrated diagnostic gauges, and verified to be operating within manufacturer specifications for temperature and pressure readings.
Completed full HVAC system installation featuring a 3-ton, 17 SEER Lennox air conditioning unit. The outdoor condenser was professionally mounted on a concrete pad against the building exterior with proper electrical disconnect box and conduit installation. System was charged with refrigerant, tested using calibrated diagnostic gauges, and verified to be operating within manufacturer specifications for temperature and pressure readings.
Cole B.
Cole B. Checked in
Completed full HVAC system installation featuring a 3-ton, 17 SEER Lennox air conditioning unit. The outdoor condenser was professionally mounted on a concrete pad against the building exterior with proper electrical disconnect box and conduit installation. System was charged with refrigerant, tested using calibrated diagnostic gauges, and verified to be operating within manufacturer specifications for temperature and pressure readings.
Chandler, IN 47610
Chandler, IN - Completed Platinum Level annual maintenance on a 2-year-old single HVAC system during the first scheduled visit. Performed comprehensive inspection and servicing of the outdoor condensing unit, which was found in good operational condition with proper mounting on rubber isolation pad, and replaced the 20x25x5 air filter as part of routine preventive maintenance protocol.
Francis I.
Francis I. Checked in
Completed Platinum Level annual maintenance on a 2-year-old single HVAC system during the first scheduled visit. Performed comprehensive inspection and servicing of the outdoor condensing unit, which was found in good operational condition with proper mounting on rubber isolation pad, and replaced the 20x25x5 air filter as part of routine preventive maintenance protocol.
Chandler, IN 47610
Responded to emergency service call for active water leak from central HVAC system flowing onto kitchen floor. Upon arrival, accessed unit through basement crawl space and inspected condensate drainage system. Found primary condensate drain line completely blocked, causing overflow from drain pan. Cleared obstruction from condensate line using appropriate tools and verified proper drainage flow. Inspected drain pan for cracks or damage and confirmed structural integrity. Tested system operation to ensure condensate was draining correctly without backup. Cleaned accumulated debris from affected areas and verified no further leakage present during extended run cycle.
Responded to emergency service call for active water leak from central HVAC system flowing onto kitchen floor. Upon arrival, accessed unit through basement crawl space and inspected condensate drainage system. Found primary condensate drain line completely blocked, causing overflow from drain pan. Cleared obstruction from condensate line using appropriate tools and verified proper drainage flow. Inspected drain pan for cracks or damage and confirmed structural integrity. Tested system operation to ensure condensate was draining correctly without backup. Cleaned accumulated debris from affected areas and verified no further leakage present during extended run cycle.
Francis I.
Francis I. Checked in
Responded to emergency service call for active water leak from central HVAC system flowing onto kitchen floor. Upon arrival, accessed unit through basement crawl space and inspected condensate drainage system. Found primary condensate drain line completely blocked, causing overflow from drain pan. Cleared obstruction from condensate line using appropriate tools and verified proper drainage flow. Inspected drain pan for cracks or damage and confirmed structural integrity. Tested system operation to ensure condensate was draining correctly without backup. Cleaned accumulated debris from affected areas and verified no further leakage present during extended run cycle.
Chandler, IN 47610
Conducted comprehensive HVAC system replacement estimate at residential property. Evaluated existing furnace/air handler unit and water heater installation in basement utility room, documenting current equipment configuration including ductwork layout, PVC condensate drainage, and electrical connections. Assessed mechanical room infrastructure and discussed replacement system options with homeowner during scheduled consultation appointment.
Conducted comprehensive HVAC system replacement estimate at residential property. Evaluated existing furnace/air handler unit and water heater installation in basement utility room, documenting current equipment configuration including ductwork layout, PVC condensate drainage, and electrical connections. Assessed mechanical room infrastructure and discussed replacement system options with homeowner during scheduled consultation appointment.
Danny M.
Danny M. Checked in
Conducted comprehensive HVAC system replacement estimate at residential property. Evaluated existing furnace/air handler unit and water heater installation in basement utility room, documenting current equipment configuration including ductwork layout, PVC condensate drainage, and electrical connections. Assessed mechanical room infrastructure and discussed replacement system options with homeowner during scheduled consultation appointment.
Chandler, IN 47610
Chandler, IN - Completed scheduled AC tune-up on residential outdoor condensing unit. Performed comprehensive maintenance inspection of heat pump system, including visual assessment of cabinet condition, verification of electrical connections and refrigerant line connections, and documentation of unit placement and surrounding clearances. Unit operational with standard weathering noted consistent with outdoor exposure.
Christian C.
Christian C. Checked in
Completed scheduled AC tune-up on residential outdoor condensing unit. Performed comprehensive maintenance inspection of heat pump system, including visual assessment of cabinet condition, verification of electrical connections and refrigerant line connections, and documentation of unit placement and surrounding clearances. Unit operational with standard weathering noted consistent with outdoor exposure.
Chandler, IN 47610
Performed comprehensive assessment of 9-year-old HVAC system experiencing cooling failure. Confirmed previous diagnosis of failed compressor and leaking evaporator coil, rendering system non-operational. Provided complete system replacement estimate including new air handler, condenser unit, and necessary ductwork modifications. Documented existing equipment configuration and discussed available financing options to accommodate budget requirements.
Performed comprehensive assessment of 9-year-old HVAC system experiencing cooling failure. Confirmed previous diagnosis of failed compressor and leaking evaporator coil, rendering system non-operational. Provided complete system replacement estimate including new air handler, condenser unit, and necessary ductwork modifications. Documented existing equipment configuration and discussed available financing options to accommodate budget requirements.
Nick B.
Nick B. Checked in
Performed comprehensive assessment of 9-year-old HVAC system experiencing cooling failure. Confirmed previous diagnosis of failed compressor and leaking evaporator coil, rendering system non-operational. Provided complete system replacement estimate including new air handler, condenser unit, and necessary ductwork modifications. Documented existing equipment configuration and discussed available financing options to accommodate budget requirements.
Chandler, IN 47610
Chandler, IN - Responded to no-cool complaint on 12-year-old Carrier air conditioning system. Upon arrival, confirmed unit was operational but struggling to maintain temperature setpoint. Customer reported wiring damage caused by dogs fighting near equipment. Performed visual inspection of outdoor condenser unit and surrounding area. Inspected electrical wiring and connections for visible damage from reported animal interference. Unit showed adequate airflow through vents with no ice buildup on evaporator coil. Documented equipment condition and damage with photographs for service records.
Danny M.
Danny M. Checked in
Responded to no-cool complaint on 12-year-old Carrier air conditioning system. Upon arrival, confirmed unit was operational but struggling to maintain temperature setpoint. Customer reported wiring damage caused by dogs fighting near equipment. Performed visual inspection of outdoor condenser unit and surrounding area. Inspected electrical wiring and connections for visible damage from reported animal interference. Unit showed adequate airflow through vents with no ice buildup on evaporator coil. Documented equipment condition and damage with photographs for service records.
Chandler, IN 47610
Completed comprehensive air conditioning tune-up and preventive maintenance inspection. Performed system diagnostics using digital testing equipment to measure electrical parameters, airflow readings, and operational temperatures. All components tested within normal operating specifications, and system confirmed to be functioning properly for continued seasonal use.
Completed comprehensive air conditioning tune-up and preventive maintenance inspection. Performed system diagnostics using digital testing equipment to measure electrical parameters, airflow readings, and operational temperatures. All components tested within normal operating specifications, and system confirmed to be functioning properly for continued seasonal use.
Michael H.
Michael H. Checked in
Completed comprehensive air conditioning tune-up and preventive maintenance inspection. Performed system diagnostics using digital testing equipment to measure electrical parameters, airflow readings, and operational temperatures. All components tested within normal operating specifications, and system confirmed to be functioning properly for continued seasonal use.
Chandler, IN 47610
Responded to callback for non-responsive thermostat on recent HVAC installation. Upon arrival, diagnosed and resolved thermostat communication issue with system. Verified proper system operation with supply air temperature reading of 82.4°F at ductwork and return air temperature of 69°F at register, confirming adequate heating performance and proper temperature differential. System now functioning correctly with thermostat responding as designed.
Responded to callback for non-responsive thermostat on recent HVAC installation. Upon arrival, diagnosed and resolved thermostat communication issue with system. Verified proper system operation with supply air temperature reading of 82.4°F at ductwork and return air temperature of 69°F at register, confirming adequate heating performance and proper temperature differential. System now functioning correctly with thermostat responding as designed.
Brent D.
Brent D. Checked in
Responded to callback for non-responsive thermostat on recent HVAC installation. Upon arrival, diagnosed and resolved thermostat communication issue with system. Verified proper system operation with supply air temperature reading of 82.4°F at ductwork and return air temperature of 69°F at register, confirming adequate heating performance and proper temperature differential. System now functioning correctly with thermostat responding as designed.
Chandler, IN 47610
Completed on-site evaluation for central air conditioning installation in a small 3-bedroom mobile home with existing 8-year-old furnace system. Assessed exterior mounting locations, electrical service capacity, and documented current conditions of structure including weathered corrugated metal siding and utility connection points to determine equipment sizing requirements and installation feasibility for complete HVAC system upgrade.
Completed on-site evaluation for central air conditioning installation in a small 3-bedroom mobile home with existing 8-year-old furnace system. Assessed exterior mounting locations, electrical service capacity, and documented current conditions of structure including weathered corrugated metal siding and utility connection points to determine equipment sizing requirements and installation feasibility for complete HVAC system upgrade.
James W.
James W. Checked in
Completed on-site evaluation for central air conditioning installation in a small 3-bedroom mobile home with existing 8-year-old furnace system. Assessed exterior mounting locations, electrical service capacity, and documented current conditions of structure including weathered corrugated metal siding and utility connection points to determine equipment sizing requirements and installation feasibility for complete HVAC system upgrade.
Chandler, IN 47610
Completed installation of a 2.5-ton, 15.5 SEER air conditioning system with a 97% AFUE furnace as an upsold replacement. The outdoor condensing unit was positioned on a concrete pad against the brick exterior with refrigerant lines and electrical conduit properly routed to the service disconnect and interior equipment, while the indoor components including ductwork and ventilation registers were installed in the residential space.
Completed installation of a 2.5-ton, 15.5 SEER air conditioning system with a 97% AFUE furnace as an upsold replacement. The outdoor condensing unit was positioned on a concrete pad against the brick exterior with refrigerant lines and electrical conduit properly routed to the service disconnect and interior equipment, while the indoor components including ductwork and ventilation registers were installed in the residential space.
Drake H.
Drake H. Checked in
Completed installation of a 2.5-ton, 15.5 SEER air conditioning system with a 97% AFUE furnace as an upsold replacement. The outdoor condensing unit was positioned on a concrete pad against the brick exterior with refrigerant lines and electrical conduit properly routed to the service disconnect and interior equipment, while the indoor components including ductwork and ventilation registers were installed in the residential space.
Chandler, IN 47610
Completed comprehensive replacement estimate for non-operational HVAC system at residential property. Assessed existing outdoor condenser unit, electrical panel capacity and circuit breaker configuration, and evaluated electrical service infrastructure including meter and disconnect switch. Documented equipment condition showing significant age and wear, photographed existing installation including ground-mounted condensing unit on concrete pad and associated electrical components, and provided homeowner with complete replacement options for new system installation.
Completed comprehensive replacement estimate for non-operational HVAC system at residential property. Assessed existing outdoor condenser unit, electrical panel capacity and circuit breaker configuration, and evaluated electrical service infrastructure including meter and disconnect switch. Documented equipment condition showing significant age and wear, photographed existing installation including ground-mounted condensing unit on concrete pad and associated electrical components, and provided homeowner with complete replacement options for new system installation.
James W.
James W. Checked in
Completed comprehensive replacement estimate for non-operational HVAC system at residential property. Assessed existing outdoor condenser unit, electrical panel capacity and circuit breaker configuration, and evaluated electrical service infrastructure including meter and disconnect switch. Documented equipment condition showing significant age and wear, photographed existing installation including ground-mounted condensing unit on concrete pad and associated electrical components, and provided homeowner with complete replacement options for new system installation.
Chandler, IN 47610
Responded to callback for unit not cooling properly. Upon inspection, discovered extensive corrosion and rust throughout the system components, including deteriorated metal ductwork housing and compromised drainage piping. Documented severe moisture damage, mineral deposits, and debris accumulation affecting mechanical assembly performance, indicating prolonged exposure to water intrusion and lack of preventative maintenance requiring further evaluation and repair recommendations.
Responded to callback for unit not cooling properly. Upon inspection, discovered extensive corrosion and rust throughout the system components, including deteriorated metal ductwork housing and compromised drainage piping. Documented severe moisture damage, mineral deposits, and debris accumulation affecting mechanical assembly performance, indicating prolonged exposure to water intrusion and lack of preventative maintenance requiring further evaluation and repair recommendations.
Craig U.
Craig U. Checked in
Responded to callback for unit not cooling properly. Upon inspection, discovered extensive corrosion and rust throughout the system components, including deteriorated metal ductwork housing and compromised drainage piping. Documented severe moisture damage, mineral deposits, and debris accumulation affecting mechanical assembly performance, indicating prolonged exposure to water intrusion and lack of preventative maintenance requiring further evaluation and repair recommendations.
Chandler, IN 47610
Completed first annual Platinum Level maintenance on a 3-year-old HVAC system with 16x25x4 filter size. Performed comprehensive system inspection including temperature differential measurements at supply register (53.0°F recorded) and electrical diagnostics showing 404.1 reading at condenser unit, confirming proper system operation and performance within manufacturer specifications.
Completed first annual Platinum Level maintenance on a 3-year-old HVAC system with 16x25x4 filter size. Performed comprehensive system inspection including temperature differential measurements at supply register (53.0°F recorded) and electrical diagnostics showing 404.1 reading at condenser unit, confirming proper system operation and performance within manufacturer specifications.
Michael H.
Michael H. Checked in
Completed first annual Platinum Level maintenance on a 3-year-old HVAC system with 16x25x4 filter size. Performed comprehensive system inspection including temperature differential measurements at supply register (53.0°F recorded) and electrical diagnostics showing 404.1 reading at condenser unit, confirming proper system operation and performance within manufacturer specifications.
Chandler, IN 47610
Chandler, IN - Responded to service call for 15-year-old residential air conditioning system blowing warm air instead of cooling. Upon arrival, located dual condenser units positioned against exterior brick wall on concrete pads with proper gravel drainage. Performed diagnostic evaluation of the affected cooling system to identify the root cause of insufficient cooling performance and restore proper operation to the aging unit.
Danny M.
Danny M. Checked in
Responded to service call for 15-year-old residential air conditioning system blowing warm air instead of cooling. Upon arrival, located dual condenser units positioned against exterior brick wall on concrete pads with proper gravel drainage. Performed diagnostic evaluation of the affected cooling system to identify the root cause of insufficient cooling performance and restore proper operation to the aging unit.
Chandler, IN 47610
Completed diagnostic service on outdoor HVAC unit and identified multiple critical component failures requiring replacement. Ordered and staged evaporator coil float switch and high limit safety switch for installation. Additionally ordered control board assembly for the outdoor unit, with instructions to collect failed control board upon installation for warranty processing. Both repairs are ready for installation with an estimated 60-90 minute completion time. System photographed and documented showing component locations and current condition of equipment including visible corrosion on unit housing and existing safety switch wiring configuration.
Completed diagnostic service on outdoor HVAC unit and identified multiple critical component failures requiring replacement. Ordered and staged evaporator coil float switch and high limit safety switch for installation. Additionally ordered control board assembly for the outdoor unit, with instructions to collect failed control board upon installation for warranty processing. Both repairs are ready for installation with an estimated 60-90 minute completion time. System photographed and documented showing component locations and current condition of equipment including visible corrosion on unit housing and existing safety switch wiring configuration.
Craig U.
Craig U. Checked in
Completed diagnostic service on outdoor HVAC unit and identified multiple critical component failures requiring replacement. Ordered and staged evaporator coil float switch and high limit safety switch for installation. Additionally ordered control board assembly for the outdoor unit, with instructions to collect failed control board upon installation for warranty processing. Both repairs are ready for installation with an estimated 60-90 minute completion time. System photographed and documented showing component locations and current condition of equipment including visible corrosion on unit housing and existing safety switch wiring configuration.
Chandler, IN 47610

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.