Local HVAC Services In Boonville, IN | AC & Heating Repair
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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Heating, Cooling & Indoor Air Quality in Boonville, IN

A good HVAC system in your home can make hot and cold days much more bearable. If your heater or air conditioner isn’t keeping up with the outdoor temperatures, look to A+ Derr Heating & Cooling for help. Our expert technicians can uncover the root cause of your system’s issues and provide the most necessary solutions.Contact the A+ Derr team online or call 833-232-4328 to schedule HVAC services at your Boonville home.

Heating Services

Staying warm during the cold winter months requires a top-notch heating unit. When it’s time for repair, replacement, or maintenance, turn to the pros at A+ Derr. We can provide services for every type of heating unit, including:

  • Furnaces: We guarantee that your furnace has a good heating element, blower motor, and air filter. We provide furnace installation, maintenance, and repairs.
  • Heat Pumps: We’ll make sure your heat pump is still moving heat energy into your home from outside.
  • Ductless mini-splits: We’ll ensure that your wall-mounted mini-split can still control the climate in your room.

Air Conditioning in Boonville, IN

Even in Indiana, the summer temperatures can reach well into the 80s and 90s. Is your AC ready to keep you cool all summer long? If not, turn to the A+ Derr team for assistance. We offer:

  • Installation and replacement: Our team can replace your old, dying AC with a brand-new, energy-efficient model.
  • Repair: Our staff can diagnose and resolve any problem going on with your AC unit.
  • Maintenance: Our crew can perform a comprehensive, multipoint inspection of the internal workings of your AC system.

Whether you have an air conditioner, heat pump, or series of ductless mini-splits, look to A+ Derr for the services you need most. Call 833-232-4328 now or contact us online to get started.

Benefits of Upgrading Your HVAC System

Replacing any part of your HVAC system can make a world of difference in your home’s climate. Just a few perks of replacing your system include:

  • Consistent heating and cooling for every room: Enjoy comfortable temperatures wherever you go in your house.
  • Lower energy bills and a reduced carbon footprint: Save money and help save the planet simultaneously.
  • Less chance of needing regular repairs and maintenance: New HVAC systems are much less likely to need repairs for a while after installation.

Reach out to A+ Derr online or call 833-232-4328 now to schedule HVAC system replacement services in Boonville.

Indoor Air Quality Services

Breathing the cleanest air possible is vital to your health. With the right indoor air quality services, you can rest easy knowing your air is pure. You may have low-quality air throughout your home if:

  • You have experienced more allergies in recent months
  • You notice layers of dust on your tables and surfaces
  • Your HVAC filters seem dustier than ever before

Enjoy clean air every day with help from A+ Derr. Contact us online or call our team at 833-232-4328 to schedule IAQ services.

Why Choose A+ Derr?

Since 1975, A+ Derr has been resolving HVAC problems for clients throughout the Boonville region. Our fourth-generation family business treats every client like one of our own. You can count on us for free estimates, 24/7 emergency service, Lennox-brand HVAC units, and a 100% satisfaction guarantee.Schedule HVAC services in Boonville, IN, now by calling 833-232-4328 or contacting us online.

Recent Jobs and Reviews in Boonville, IN

Job Locations and Reviews

Boonville, IN - Responded to no-cool call on 12-year-old system located in garage. Upon arrival, found Nest thermostat displaying "no system detected" error with fan running intermittently but system cycling and shutting off without producing conditioned air. Verified electrical supply at breaker panel showed no tripped breakers. Accessed control board assembly and identified failed furnace control board preventing proper system communication and operation. Documented control board model information and captured photographs of existing board, wiring configuration, and terminal connections for part ordering purposes. Furnace control board requires replacement to restore system functionality. System remains non-operational pending part arrival and installation.
Francis I.
Francis I. Checked in
Responded to no-cool call on 12-year-old system located in garage. Upon arrival, found Nest thermostat displaying "no system detected" error with fan running intermittently but system cycling and shutting off without producing conditioned air. Verified electrical supply at breaker panel showed no tripped breakers. Accessed control board assembly and identified failed furnace control board preventing proper system communication and operation. Documented control board model information and captured photographs of existing board, wiring configuration, and terminal connections for part ordering purposes. Furnace control board requires replacement to restore system functionality. System remains non-operational pending part arrival and installation.
Boonville, IN 47601
Conducted follow-up site visit to assess previously incomplete work and document current system conditions. Inspection revealed significant frost accumulation on refrigerant line with deteriorated insulation, indicating potential refrigerant flow issues or inadequate insulation coverage. Photographed insulation materials and affected copper piping with ice buildup for documentation and future reference.
Conducted follow-up site visit to assess previously incomplete work and document current system conditions. Inspection revealed significant frost accumulation on refrigerant line with deteriorated insulation, indicating potential refrigerant flow issues or inadequate insulation coverage. Photographed insulation materials and affected copper piping with ice buildup for documentation and future reference.
Francis I.
Francis I. Checked in
Conducted follow-up site visit to assess previously incomplete work and document current system conditions. Inspection revealed significant frost accumulation on refrigerant line with deteriorated insulation, indicating potential refrigerant flow issues or inadequate insulation coverage. Photographed insulation materials and affected copper piping with ice buildup for documentation and future reference.
Boonville, IN 47601
Completed Platinum Level annual maintenance on a 2-year-old Lennox HVAC system consisting of indoor air handler and outdoor condensing unit. Performed comprehensive inspection of indoor unit located in utility room, including examination of all electrical connections, refrigerant lines, and PVC condensate drainage system. Replaced 20x25x5 air filter per maintenance protocol. Inspected ductwork and noted minor wear to insulation wrapping on supply plenum. Evaluated outdoor condensing unit positioned on composite pad with proper clearances maintained from landscaping. Verified electrical disconnect functionality, checked refrigerant pressures, and confirmed proper airflow through condenser coil. Cleaned condenser coil fins and removed debris from unit perimeter. Tested system operation through complete cooling cycle, confirming proper startup sequence, temperature differential, and overall performance within manufacturer specifications. All components functioning as designed with no imme
Completed Platinum Level annual maintenance on a 2-year-old Lennox HVAC system consisting of indoor air handler and outdoor condensing unit. Performed comprehensive inspection of indoor unit located in utility room, including examination of all electrical connections, refrigerant lines, and PVC condensate drainage system. Replaced 20x25x5 air filter per maintenance protocol. Inspected ductwork and noted minor wear to insulation wrapping on supply plenum. Evaluated outdoor condensing unit positioned on composite pad with proper clearances maintained from landscaping. Verified electrical disconnect functionality, checked refrigerant pressures, and confirmed proper airflow through condenser coil. Cleaned condenser coil fins and removed debris from unit perimeter. Tested system operation through complete cooling cycle, confirming proper startup sequence, temperature differential, and overall performance within manufacturer specifications. All components functioning as designed with no imme
Jeremiah H.
Jeremiah H. Checked in
Completed Platinum Level annual maintenance on a 2-year-old Lennox HVAC system consisting of indoor air handler and outdoor condensing unit. Performed comprehensive inspection of indoor unit located in utility room, including examination of all electrical connections, refrigerant lines, and PVC condensate drainage system. Replaced 20x25x5 air filter per maintenance protocol. Inspected ductwork and noted minor wear to insulation wrapping on supply plenum. Evaluated outdoor condensing unit positioned on composite pad with proper clearances maintained from landscaping. Verified electrical disconnect functionality, checked refrigerant pressures, and confirmed proper airflow through condenser coil. Cleaned condenser coil fins and removed debris from unit perimeter. Tested system operation through complete cooling cycle, confirming proper startup sequence, temperature differential, and overall performance within manufacturer specifications. All components functioning as designed with no imme
Boonville, IN 47601
Conducted comprehensive assessment of seventeen-year-old Lennox residential air conditioning system for replacement estimate. Evaluated outdoor condenser unit positioned on concrete pad and indoor vertical air handler installed in utility closet, documenting equipment specifications, installation configuration, electrical connections, and condensate drainage system to provide accurate replacement system recommendations.
Conducted comprehensive assessment of seventeen-year-old Lennox residential air conditioning system for replacement estimate. Evaluated outdoor condenser unit positioned on concrete pad and indoor vertical air handler installed in utility closet, documenting equipment specifications, installation configuration, electrical connections, and condensate drainage system to provide accurate replacement system recommendations.
James W.
James W. Checked in
Conducted comprehensive assessment of seventeen-year-old Lennox residential air conditioning system for replacement estimate. Evaluated outdoor condenser unit positioned on concrete pad and indoor vertical air handler installed in utility closet, documenting equipment specifications, installation configuration, electrical connections, and condensate drainage system to provide accurate replacement system recommendations.
Boonville, IN 47601
Conducted comprehensive HVAC system replacement estimate for existing customer with operational system seeking upgrade options. Evaluated current downflow furnace and Amana air handler configuration in basement utility space, documenting equipment specifications, clearances, and installation parameters. Assessed ductwork arrangement, base condition, and spatial requirements for high-efficiency AC/HP system compatibility, providing detailed replacement recommendations and configuration options for complete system upgrade.
Conducted comprehensive HVAC system replacement estimate for existing customer with operational system seeking upgrade options. Evaluated current downflow furnace and Amana air handler configuration in basement utility space, documenting equipment specifications, clearances, and installation parameters. Assessed ductwork arrangement, base condition, and spatial requirements for high-efficiency AC/HP system compatibility, providing detailed replacement recommendations and configuration options for complete system upgrade.
James W.
James W. Checked in
Conducted comprehensive HVAC system replacement estimate for existing customer with operational system seeking upgrade options. Evaluated current downflow furnace and Amana air handler configuration in basement utility space, documenting equipment specifications, clearances, and installation parameters. Assessed ductwork arrangement, base condition, and spatial requirements for high-efficiency AC/HP system compatibility, providing detailed replacement recommendations and configuration options for complete system upgrade.
Boonville, IN 47601
Boonville, IN - Installed ADA-compliant elongated toilet in residential bathroom corner location. Completed two-piece toilet installation with proper mounting, wax ring seal, water supply connection, and tank assembly with chrome flush lever. Verified proper operation and tested for leaks.
Isaac G.
Isaac G. Checked in
Installed ADA-compliant elongated toilet in residential bathroom corner location. Completed two-piece toilet installation with proper mounting, wax ring seal, water supply connection, and tank assembly with chrome flush lever. Verified proper operation and tested for leaks.
Boonville, IN 47601
Completed planned monthly HVAC maintenance on 13-year-old system with 20x25x5 filter configuration. Performed electrical diagnostics using digital clamp meter, recording amperage reading of 19.85 amps at outdoor condensing unit. Conducted comprehensive system inspection of both indoor and outdoor equipment, documenting equipment condition and operational parameters with diagnostic instruments.
Completed planned monthly HVAC maintenance on 13-year-old system with 20x25x5 filter configuration. Performed electrical diagnostics using digital clamp meter, recording amperage reading of 19.85 amps at outdoor condensing unit. Conducted comprehensive system inspection of both indoor and outdoor equipment, documenting equipment condition and operational parameters with diagnostic instruments.
Michael H.
Michael H. Checked in
Completed planned monthly HVAC maintenance on 13-year-old system with 20x25x5 filter configuration. Performed electrical diagnostics using digital clamp meter, recording amperage reading of 19.85 amps at outdoor condensing unit. Conducted comprehensive system inspection of both indoor and outdoor equipment, documenting equipment condition and operational parameters with diagnostic instruments.
Boonville, IN 47601
Provided estimate for conversion of existing tub/shower combination to stand-alone shower unit at residential property. Assessed current bronze-framed glass enclosure and white bathtub with failing fixtures experiencing continuous dripping issues. Presented cost-effective options for shower-only installation in same location, including fixture replacement recommendations and enclosure modifications to address deteriorating components while minimizing structural changes.
Provided estimate for conversion of existing tub/shower combination to stand-alone shower unit at residential property. Assessed current bronze-framed glass enclosure and white bathtub with failing fixtures experiencing continuous dripping issues. Presented cost-effective options for shower-only installation in same location, including fixture replacement recommendations and enclosure modifications to address deteriorating components while minimizing structural changes.
Isaac G.
Isaac G. Checked in
Provided estimate for conversion of existing tub/shower combination to stand-alone shower unit at residential property. Assessed current bronze-framed glass enclosure and white bathtub with failing fixtures experiencing continuous dripping issues. Presented cost-effective options for shower-only installation in same location, including fixture replacement recommendations and enclosure modifications to address deteriorating components while minimizing structural changes.
Boonville, IN 47601
Completed installation of 3.5-ton, 13 SEER air conditioning system with matching evaporator coil in residential basement mechanical room. The new AC system was integrated with the existing Goodman furnace unit, with the evaporator coil installed in the supply plenum above the furnace. All refrigerant lines were properly sized and insulated, condensate drainage was routed through white PVC piping with appropriate trap installation, and electrical disconnect was verified for safe operation. System was pressure tested for leaks, evacuated to manufacturer specifications, charged with proper refrigerant amount per unit nameplate, and tested for correct operation including temperature split verification across the coil.
Completed installation of 3.5-ton, 13 SEER air conditioning system with matching evaporator coil in residential basement mechanical room. The new AC system was integrated with the existing Goodman furnace unit, with the evaporator coil installed in the supply plenum above the furnace. All refrigerant lines were properly sized and insulated, condensate drainage was routed through white PVC piping with appropriate trap installation, and electrical disconnect was verified for safe operation. System was pressure tested for leaks, evacuated to manufacturer specifications, charged with proper refrigerant amount per unit nameplate, and tested for correct operation including temperature split verification across the coil.
Kent J.
Kent J. Checked in
Completed installation of 3.5-ton, 13 SEER air conditioning system with matching evaporator coil in residential basement mechanical room. The new AC system was integrated with the existing Goodman furnace unit, with the evaporator coil installed in the supply plenum above the furnace. All refrigerant lines were properly sized and insulated, condensate drainage was routed through white PVC piping with appropriate trap installation, and electrical disconnect was verified for safe operation. System was pressure tested for leaks, evacuated to manufacturer specifications, charged with proper refrigerant amount per unit nameplate, and tested for correct operation including temperature split verification across the coil.
Boonville, IN 47601
Completed water heater replacement with upgraded gas supply infrastructure. Replaced 10 feet of existing gas pipe to properly accommodate new fixtures and ensure code-compliant installation. Installed new residential water heater with flexible yellow gas connector line and coordinated with HVAC technician for proper flue installation and venting. Total installation time approximately 4 hours including gas line modifications and system testing.
Completed water heater replacement with upgraded gas supply infrastructure. Replaced 10 feet of existing gas pipe to properly accommodate new fixtures and ensure code-compliant installation. Installed new residential water heater with flexible yellow gas connector line and coordinated with HVAC technician for proper flue installation and venting. Total installation time approximately 4 hours including gas line modifications and system testing.
Isaac G.
Isaac G. Checked in
Completed water heater replacement with upgraded gas supply infrastructure. Replaced 10 feet of existing gas pipe to properly accommodate new fixtures and ensure code-compliant installation. Installed new residential water heater with flexible yellow gas connector line and coordinated with HVAC technician for proper flue installation and venting. Total installation time approximately 4 hours including gas line modifications and system testing.
Boonville, IN 47601
Boonville, IN - Installed a 2.5-ton, 15.2 SEER Lennox heat pump system with matching air handler on concrete pad in backyard location. Unit was properly positioned, leveled, connected to refrigerant lines, and tested for optimal performance with financing approved through service department.
Addison B.
Addison B. Checked in
Installed a 2.5-ton, 15.2 SEER Lennox heat pump system with matching air handler on concrete pad in backyard location. Unit was properly positioned, leveled, connected to refrigerant lines, and tested for optimal performance with financing approved through service department.
Boonville, IN 47601
Responded to no cooling complaint on 2-year-old residential AC system affecting entire home. Upon inspection, discovered outdoor unit's air filter completely blocked with heavy accumulation of dirt, dust, and debris, severely restricting airflow and preventing proper system operation. Removed and replaced extremely clogged filter, restoring full airflow to condenser unit. System tested and confirmed cooling properly with adequate airflow and normal operating pressures.
Responded to no cooling complaint on 2-year-old residential AC system affecting entire home. Upon inspection, discovered outdoor unit's air filter completely blocked with heavy accumulation of dirt, dust, and debris, severely restricting airflow and preventing proper system operation. Removed and replaced extremely clogged filter, restoring full airflow to condenser unit. System tested and confirmed cooling properly with adequate airflow and normal operating pressures.
Justin M.
Justin M. Checked in
Responded to no cooling complaint on 2-year-old residential AC system affecting entire home. Upon inspection, discovered outdoor unit's air filter completely blocked with heavy accumulation of dirt, dust, and debris, severely restricting airflow and preventing proper system operation. Removed and replaced extremely clogged filter, restoring full airflow to condenser unit. System tested and confirmed cooling properly with adequate airflow and normal operating pressures.
Boonville, IN 47601
Responded to no cooling complaint on 2-year-old residential system with indoor temperature in mid-to-high 80s despite thermostat set to 68 degrees. Upon arrival, performed visual inspection of outdoor condensing unit and discovered heavily soiled condenser coil with significant dirt accumulation and organic debris restricting airflow through fins. Located and removed air filter which showed extreme contamination with thick layer of dust and particulate matter across entire surface, severely restricting system airflow. Restricted airflow from clogged filter caused inadequate heat exchange and system shutdown due to insufficient cooling capacity. Replaced dirty filter with new filter and cleaned condenser coil to restore proper airflow and heat transfer. System tested and verified operational with proper cooling restored to residence.
Responded to no cooling complaint on 2-year-old residential system with indoor temperature in mid-to-high 80s despite thermostat set to 68 degrees. Upon arrival, performed visual inspection of outdoor condensing unit and discovered heavily soiled condenser coil with significant dirt accumulation and organic debris restricting airflow through fins. Located and removed air filter which showed extreme contamination with thick layer of dust and particulate matter across entire surface, severely restricting system airflow. Restricted airflow from clogged filter caused inadequate heat exchange and system shutdown due to insufficient cooling capacity. Replaced dirty filter with new filter and cleaned condenser coil to restore proper airflow and heat transfer. System tested and verified operational with proper cooling restored to residence.
Jeremiah H.
Jeremiah H. Checked in
Responded to no cooling complaint on 2-year-old residential system with indoor temperature in mid-to-high 80s despite thermostat set to 68 degrees. Upon arrival, performed visual inspection of outdoor condensing unit and discovered heavily soiled condenser coil with significant dirt accumulation and organic debris restricting airflow through fins. Located and removed air filter which showed extreme contamination with thick layer of dust and particulate matter across entire surface, severely restricting system airflow. Restricted airflow from clogged filter caused inadequate heat exchange and system shutdown due to insufficient cooling capacity. Replaced dirty filter with new filter and cleaned condenser coil to restore proper airflow and heat transfer. System tested and verified operational with proper cooling restored to residence.
Boonville, IN 47601
Responded to service call for 15-year-old HVAC system producing excessive noise during operation, described as similar to an off-balance dryer. Upon arrival, performed diagnostic inspection of furnace and associated equipment in basement utility area. Evaluated system operation, inspected blower assembly, motor bearings, and mechanical components to identify source of abnormal sound. System remained operational and cooling effectively throughout inspection. Documented equipment condition including Honeywell thermostat, furnace unit with PVC venting system, and condensate pump assembly.
Responded to service call for 15-year-old HVAC system producing excessive noise during operation, described as similar to an off-balance dryer. Upon arrival, performed diagnostic inspection of furnace and associated equipment in basement utility area. Evaluated system operation, inspected blower assembly, motor bearings, and mechanical components to identify source of abnormal sound. System remained operational and cooling effectively throughout inspection. Documented equipment condition including Honeywell thermostat, furnace unit with PVC venting system, and condensate pump assembly.
Jeremiah H.
Jeremiah H. Checked in
Responded to service call for 15-year-old HVAC system producing excessive noise during operation, described as similar to an off-balance dryer. Upon arrival, performed diagnostic inspection of furnace and associated equipment in basement utility area. Evaluated system operation, inspected blower assembly, motor bearings, and mechanical components to identify source of abnormal sound. System remained operational and cooling effectively throughout inspection. Documented equipment condition including Honeywell thermostat, furnace unit with PVC venting system, and condensate pump assembly.
Boonville, IN 47601
Responded to intermittent cooling issues on 2-year-old upstairs system that was randomly struggling to maintain temperature and occasionally requiring manual resets. Performed diagnostic inspection of outdoor unit electrical compartment, inspected TITAN capacitor, verified all electrical connections and terminals, and examined indoor control boards and wiring. Investigated reported loud noise from outdoor unit and assessed system performance to determine cause of intermittent operation.
Responded to intermittent cooling issues on 2-year-old upstairs system that was randomly struggling to maintain temperature and occasionally requiring manual resets. Performed diagnostic inspection of outdoor unit electrical compartment, inspected TITAN capacitor, verified all electrical connections and terminals, and examined indoor control boards and wiring. Investigated reported loud noise from outdoor unit and assessed system performance to determine cause of intermittent operation.
Christian C.
Christian C. Checked in
Responded to intermittent cooling issues on 2-year-old upstairs system that was randomly struggling to maintain temperature and occasionally requiring manual resets. Performed diagnostic inspection of outdoor unit electrical compartment, inspected TITAN capacitor, verified all electrical connections and terminals, and examined indoor control boards and wiring. Investigated reported loud noise from outdoor unit and assessed system performance to determine cause of intermittent operation.
Boonville, IN 47601
Responded to no cooling complaint on 20+ year old Goodman HVAC system with weak airflow. Upon arrival, found system running but not producing adequate cooling. Performed diagnostic inspection revealing severely restricted airflow due to heavily clogged air filter with excessive dust and debris accumulation. Observed significant rust and corrosion on supply duct piping extending from furnace unit, indicating advanced age and deterioration of system components. Replaced dirty 16x25x1 air filter with new filter to restore proper airflow. Advised property owner that system age and visible component deterioration, including corroded ductwork, indicate unit is operating well beyond typical service life and may require replacement in near future to avoid continued performance issues and potential system failure.
Responded to no cooling complaint on 20+ year old Goodman HVAC system with weak airflow. Upon arrival, found system running but not producing adequate cooling. Performed diagnostic inspection revealing severely restricted airflow due to heavily clogged air filter with excessive dust and debris accumulation. Observed significant rust and corrosion on supply duct piping extending from furnace unit, indicating advanced age and deterioration of system components. Replaced dirty 16x25x1 air filter with new filter to restore proper airflow. Advised property owner that system age and visible component deterioration, including corroded ductwork, indicate unit is operating well beyond typical service life and may require replacement in near future to avoid continued performance issues and potential system failure.
Danny M.
Danny M. Checked in
Responded to no cooling complaint on 20+ year old Goodman HVAC system with weak airflow. Upon arrival, found system running but not producing adequate cooling. Performed diagnostic inspection revealing severely restricted airflow due to heavily clogged air filter with excessive dust and debris accumulation. Observed significant rust and corrosion on supply duct piping extending from furnace unit, indicating advanced age and deterioration of system components. Replaced dirty 16x25x1 air filter with new filter to restore proper airflow. Advised property owner that system age and visible component deterioration, including corroded ductwork, indicate unit is operating well beyond typical service life and may require replacement in near future to avoid continued performance issues and potential system failure.
Boonville, IN 47601
Completed comprehensive load calculation for 2,512 square foot residential property using professional HVAC software to determine proper equipment sizing for system replacement. Documented existing Goodman furnace installation in basement mechanical room, including current ductwork configuration, plenum connections, and overall system layout to provide accurate replacement estimate with energy-efficient equipment options.
Completed comprehensive load calculation for 2,512 square foot residential property using professional HVAC software to determine proper equipment sizing for system replacement. Documented existing Goodman furnace installation in basement mechanical room, including current ductwork configuration, plenum connections, and overall system layout to provide accurate replacement estimate with energy-efficient equipment options.
Jeremiah H.
Jeremiah H. Checked in
Completed comprehensive load calculation for 2,512 square foot residential property using professional HVAC software to determine proper equipment sizing for system replacement. Documented existing Goodman furnace installation in basement mechanical room, including current ductwork configuration, plenum connections, and overall system layout to provide accurate replacement estimate with energy-efficient equipment options.
Boonville, IN 47601
Responded to a no cooling complaint on a 7-year-old commercial HVAC system serving the main level. Performed diagnostic evaluation of the outdoor condensing unit and indoor air handler components. Inspected condenser coil condition, verified electrical connections, and assessed overall system operation to identify the cause of inadequate cooling performance.
Responded to a no cooling complaint on a 7-year-old commercial HVAC system serving the main level. Performed diagnostic evaluation of the outdoor condensing unit and indoor air handler components. Inspected condenser coil condition, verified electrical connections, and assessed overall system operation to identify the cause of inadequate cooling performance.
Jeremiah H.
Jeremiah H. Checked in
Responded to a no cooling complaint on a 7-year-old commercial HVAC system serving the main level. Performed diagnostic evaluation of the outdoor condensing unit and indoor air handler components. Inspected condenser coil condition, verified electrical connections, and assessed overall system operation to identify the cause of inadequate cooling performance.
Boonville, IN 47601
Completed follow-up maintenance visit after original planned maintenance was not finished by previous technician. Accessed HVAC unit and inspected evaporator coil assembly, noting active condensation present on coil fins and drain pan, indicating normal system operation. Documented temperature readings using calibrated digital thermometer, recording 64.88°F at evaporator coil surface. Verified proper drainage with visible moisture collection in metal drain pan. Inspected heat exchanger fins for cleanliness and airflow obstruction, observing accumulated dust and dirt on coil surfaces and base components. System components including ductwork, evaporator coils, and drain pan confirmed to be intact and functioning. Photographic documentation captured for service records showing coil condition, temperature measurements, and condensation patterns.
Completed follow-up maintenance visit after original planned maintenance was not finished by previous technician. Accessed HVAC unit and inspected evaporator coil assembly, noting active condensation present on coil fins and drain pan, indicating normal system operation. Documented temperature readings using calibrated digital thermometer, recording 64.88°F at evaporator coil surface. Verified proper drainage with visible moisture collection in metal drain pan. Inspected heat exchanger fins for cleanliness and airflow obstruction, observing accumulated dust and dirt on coil surfaces and base components. System components including ductwork, evaporator coils, and drain pan confirmed to be intact and functioning. Photographic documentation captured for service records showing coil condition, temperature measurements, and condensation patterns.
Michael H.
Michael H. Checked in
Completed follow-up maintenance visit after original planned maintenance was not finished by previous technician. Accessed HVAC unit and inspected evaporator coil assembly, noting active condensation present on coil fins and drain pan, indicating normal system operation. Documented temperature readings using calibrated digital thermometer, recording 64.88°F at evaporator coil surface. Verified proper drainage with visible moisture collection in metal drain pan. Inspected heat exchanger fins for cleanliness and airflow obstruction, observing accumulated dust and dirt on coil surfaces and base components. System components including ductwork, evaporator coils, and drain pan confirmed to be intact and functioning. Photographic documentation captured for service records showing coil condition, temperature measurements, and condensation patterns.
Boonville, IN 47601
Conducted comprehensive site evaluation for complete HVAC system replacement at residential property. Assessed existing outdoor condenser unit with cylindrical design located in overgrown yard area against brick exterior, and indoor furnace system situated in basement utility space with connected ductwork. Documented current equipment conditions through photographic evidence to support replacement estimate proposal. Recommended full system upgrade to modern high-efficiency equipment to improve energy performance and reliability.
Conducted comprehensive site evaluation for complete HVAC system replacement at residential property. Assessed existing outdoor condenser unit with cylindrical design located in overgrown yard area against brick exterior, and indoor furnace system situated in basement utility space with connected ductwork. Documented current equipment conditions through photographic evidence to support replacement estimate proposal. Recommended full system upgrade to modern high-efficiency equipment to improve energy performance and reliability.
Shawn M.
Shawn M. Checked in
Conducted comprehensive site evaluation for complete HVAC system replacement at residential property. Assessed existing outdoor condenser unit with cylindrical design located in overgrown yard area against brick exterior, and indoor furnace system situated in basement utility space with connected ductwork. Documented current equipment conditions through photographic evidence to support replacement estimate proposal. Recommended full system upgrade to modern high-efficiency equipment to improve energy performance and reliability.
Boonville, IN 47601
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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.