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

Completed second annual maintenance visit on 1-year-old system. Replaced pure air and 16x25x5 filters. Performed comprehensive diagnostic check including airflow measurements at registers and inspection of furnace electrical components/blower motor. System functioning properly; customer advised on annual maintenance renewal.
Completed second annual maintenance visit on 1-year-old system. Replaced pure air and 16x25x5 filters. Performed comprehensive diagnostic check including airflow measurements at registers and inspection of furnace electrical components/blower motor. System functioning properly; customer advised on annual maintenance renewal.
Michael H.
Michael H. Checked in
Completed second annual maintenance visit on 1-year-old system. Replaced pure air and 16x25x5 filters. Performed comprehensive diagnostic check including airflow measurements at registers and inspection of furnace electrical components/blower motor. System functioning properly; customer advised on annual maintenance renewal.
Boonville, IN 47601
Boonville, IN - Performed annual maintenance on 12/21-year-old HVAC system under Gold Level service agreement. Inspected circuit board which showed signs of dust accumulation and possible corrosion on components. Customer's daughter should be contacted at 812-774-1312 regarding findings. System uses 16x20x1 filter.
Drew C.
Drew C. Checked in
Performed annual maintenance on 12/21-year-old HVAC system under Gold Level service agreement. Inspected circuit board which showed signs of dust accumulation and possible corrosion on components. Customer's daughter should be contacted at 812-774-1312 regarding findings. System uses 16x20x1 filter.
Boonville, IN 47601
Performed routine furnace maintenance as scheduled with customer's requested technician Francis. Inspected 13-year-old system with 16x25x5 filter. Verified proper thermostat operation (Honeywell digital) showing appropriate temperature readings and system response in heating mode.
Performed routine furnace maintenance as scheduled with customer's requested technician Francis. Inspected 13-year-old system with 16x25x5 filter. Verified proper thermostat operation (Honeywell digital) showing appropriate temperature readings and system response in heating mode.
Jeremiah H.
Jeremiah H. Checked in
Performed routine furnace maintenance as scheduled with customer's requested technician Francis. Inspected 13-year-old system with 16x25x5 filter. Verified proper thermostat operation (Honeywell digital) showing appropriate temperature readings and system response in heating mode.
Boonville, IN 47601
Boonville, IN - Responded to no-heat call for a 2-year-old furnace in warehouse facility. Upon inspection, found system with blinking red light, indicating fault condition. Thermostat was calling for heat but no airflow was present through vents. Diagnosed and repaired issue, restored proper heating operation to warehouse unit.
Shawn M.
Shawn M. Checked in
Responded to no-heat call for a 2-year-old furnace in warehouse facility. Upon inspection, found system with blinking red light, indicating fault condition. Thermostat was calling for heat but no airflow was present through vents. Diagnosed and repaired issue, restored proper heating operation to warehouse unit.
Boonville, IN 47601
Boonville, IN - Completed scheduled maintenance on 6-year-old residential HVAC system. Inspected furnace interior components including control board, electrical connections, and blower motor assembly. Replaced 16x25x5 filter and performed comprehensive system diagnostic with amp meter to ensure proper operation.
Michael H.
Michael H. Checked in
Completed scheduled maintenance on 6-year-old residential HVAC system. Inspected furnace interior components including control board, electrical connections, and blower motor assembly. Replaced 16x25x5 filter and performed comprehensive system diagnostic with amp meter to ensure proper operation.
Boonville, IN 47601
Performed annual maintenance on HVAC system installed in October 2022. Inspected electrical control system components, verifying proper connections on circuit board terminals. Conducted diagnostic testing with digital measurement device, recording system readings of 27. Replaced 16x25x5 filters as part of scheduled maintenance protocol.
Performed annual maintenance on HVAC system installed in October 2022. Inspected electrical control system components, verifying proper connections on circuit board terminals. Conducted diagnostic testing with digital measurement device, recording system readings of 27. Replaced 16x25x5 filters as part of scheduled maintenance protocol.
Brent D.
Brent D. Checked in
Performed annual maintenance on HVAC system installed in October 2022. Inspected electrical control system components, verifying proper connections on circuit board terminals. Conducted diagnostic testing with digital measurement device, recording system readings of 27. Replaced 16x25x5 filters as part of scheduled maintenance protocol.
Boonville, IN 47601
Completed annual Gold Level maintenance service on a 10-year-old HVAC system. Removed and cleaned floor vents that showed significant dust accumulation, and inspected interior ductwork which displayed dirt buildup on metal surfaces. Replaced the 20x20x5 filter as part of the scheduled first visit maintenance protocol.
Completed annual Gold Level maintenance service on a 10-year-old HVAC system. Removed and cleaned floor vents that showed significant dust accumulation, and inspected interior ductwork which displayed dirt buildup on metal surfaces. Replaced the 20x20x5 filter as part of the scheduled first visit maintenance protocol.
Brock B.
Brock B. Checked in
Completed annual Gold Level maintenance service on a 10-year-old HVAC system. Removed and cleaned floor vents that showed significant dust accumulation, and inspected interior ductwork which displayed dirt buildup on metal surfaces. Replaced the 20x20x5 filter as part of the scheduled first visit maintenance protocol.
Boonville, IN 47601
Completed installation of a new 2-ton Lennox 2-stage complete HVAC system on the second floor. System features 17 SEER cooling and 97% efficient heating components. Properly mounted furnace unit on platform with PVC ventilation system and installed insulated ductwork with reflective metallic wrapping for optimal efficiency. All connections secured and system tested for proper operation.
Completed installation of a new 2-ton Lennox 2-stage complete HVAC system on the second floor. System features 17 SEER cooling and 97% efficient heating components. Properly mounted furnace unit on platform with PVC ventilation system and installed insulated ductwork with reflective metallic wrapping for optimal efficiency. All connections secured and system tested for proper operation.
Ian H.
Ian H. Checked in
Completed installation of a new 2-ton Lennox 2-stage complete HVAC system on the second floor. System features 17 SEER cooling and 97% efficient heating components. Properly mounted furnace unit on platform with PVC ventilation system and installed insulated ductwork with reflective metallic wrapping for optimal efficiency. All connections secured and system tested for proper operation.
Boonville, IN 47601
Conducted follow-up inspection of electrical panel as requested by Dave B. Documented significant issues including aged wiring with discoloration, disorganized wire arrangement not meeting current standards, and proximity to severely corroded copper piping. Photos taken revealed deteriorated electrical connections with exposed/fraying wire ends in confined space, indicating urgent need for system upgrade to address safety concerns.
Conducted follow-up inspection of electrical panel as requested by Dave B. Documented significant issues including aged wiring with discoloration, disorganized wire arrangement not meeting current standards, and proximity to severely corroded copper piping. Photos taken revealed deteriorated electrical connections with exposed/fraying wire ends in confined space, indicating urgent need for system upgrade to address safety concerns.
Steven W.
Steven W. Checked in
Conducted follow-up inspection of electrical panel as requested by Dave B. Documented significant issues including aged wiring with discoloration, disorganized wire arrangement not meeting current standards, and proximity to severely corroded copper piping. Photos taken revealed deteriorated electrical connections with exposed/fraying wire ends in confined space, indicating urgent need for system upgrade to address safety concerns.
Boonville, IN 47601
Responded to service call for intermittent heating issue on system approximately 5-10 years old. Diagnosed short-cycling furnace blowing room temperature air. Inspection revealed significant dust accumulation on internal components and flame sensor. Cleaned flame sensor, inspected burner assembly, and verified proper ignition sequence. System now operating correctly with consistent heat output.
Responded to service call for intermittent heating issue on system approximately 5-10 years old. Diagnosed short-cycling furnace blowing room temperature air. Inspection revealed significant dust accumulation on internal components and flame sensor. Cleaned flame sensor, inspected burner assembly, and verified proper ignition sequence. System now operating correctly with consistent heat output.
Francis I.
Francis I. Checked in
Responded to service call for intermittent heating issue on system approximately 5-10 years old. Diagnosed short-cycling furnace blowing room temperature air. Inspection revealed significant dust accumulation on internal components and flame sensor. Cleaned flame sensor, inspected burner assembly, and verified proper ignition sequence. System now operating correctly with consistent heat output.
Boonville, IN 47601
Boonville, IN - Successfully installed a 22kW Generac generator system with complete electrical panel integration. System was mounted on concrete pad with proper clearances and connected to the main electrical panel following manufacturer specifications. All connections were tested and verified operational.
Cole B.
Cole B. Checked in
Successfully installed a 22kW Generac generator system with complete electrical panel integration. System was mounted on concrete pad with proper clearances and connected to the main electrical panel following manufacturer specifications. All connections were tested and verified operational.
Boonville, IN 47601
Performed scheduled annual maintenance on 2-year-old dual HVAC system. Accessed interior components of furnace unit to inspect electrical connections and blower assembly. Replaced 20x25x5 (downstairs) and 16x25x5 (upstairs) air filters during service to maintain system efficiency and air quality.
Performed scheduled annual maintenance on 2-year-old dual HVAC system. Accessed interior components of furnace unit to inspect electrical connections and blower assembly. Replaced 20x25x5 (downstairs) and 16x25x5 (upstairs) air filters during service to maintain system efficiency and air quality.
Michael H.
Michael H. Checked in
Performed scheduled annual maintenance on 2-year-old dual HVAC system. Accessed interior components of furnace unit to inspect electrical connections and blower assembly. Replaced 20x25x5 (downstairs) and 16x25x5 (upstairs) air filters during service to maintain system efficiency and air quality.
Boonville, IN 47601
Conducted follow-up assessment of porch addition project. Documented existing electrical outlet on interior brick wall and examined exposed ceiling structure in basement/utility space where electrical connections for the addition will need to be integrated. Photographed both areas to facilitate proper planning for upcoming electrical work.
Conducted follow-up assessment of porch addition project. Documented existing electrical outlet on interior brick wall and examined exposed ceiling structure in basement/utility space where electrical connections for the addition will need to be integrated. Photographed both areas to facilitate proper planning for upcoming electrical work.
Steven W.
Steven W. Checked in
Conducted follow-up assessment of porch addition project. Documented existing electrical outlet on interior brick wall and examined exposed ceiling structure in basement/utility space where electrical connections for the addition will need to be integrated. Photographed both areas to facilitate proper planning for upcoming electrical work.
Boonville, IN 47601
Boonville, IN - Diagnosed 6-year-old heating system that was failing to maintain set temperature (64°F actual with 68°F setpoint). Identified malfunctioning DiversiTech CP-22 condensate pump (manufactured 06/2019) continuously running and causing insufficient heat output. Replaced faulty pump to restore proper system operation and heating performance.
Cameron N.
Cameron N. Checked in
Diagnosed 6-year-old heating system that was failing to maintain set temperature (64°F actual with 68°F setpoint). Identified malfunctioning DiversiTech CP-22 condensate pump (manufactured 06/2019) continuously running and causing insufficient heat output. Replaced faulty pump to restore proper system operation and heating performance.
Boonville, IN 47601
Diagnosed 4-year-old non-functioning system with blank thermostat and flashing furnace lights. Discovered failed contactor (CONT2P040024V) in electric heating unit preventing proper operation. Replaced contactor, reset system breakers, and verified proper heating function with adequate airflow through vents.
Diagnosed 4-year-old non-functioning system with blank thermostat and flashing furnace lights. Discovered failed contactor (CONT2P040024V) in electric heating unit preventing proper operation. Replaced contactor, reset system breakers, and verified proper heating function with adequate airflow through vents.
Cameron N.
Cameron N. Checked in
Diagnosed 4-year-old non-functioning system with blank thermostat and flashing furnace lights. Discovered failed contactor (CONT2P040024V) in electric heating unit preventing proper operation. Replaced contactor, reset system breakers, and verified proper heating function with adequate airflow through vents.
Boonville, IN 47601
Responded to follow-up call regarding persistent hissing sound from master bath shower. Inspected valve assembly through access panel and confirmed diagnosis from previous visit. Replaced faulty cartridge in valve body which was causing the noise issue, as the original assessment had indicated no leaks within the wall cavity.
Responded to follow-up call regarding persistent hissing sound from master bath shower. Inspected valve assembly through access panel and confirmed diagnosis from previous visit. Replaced faulty cartridge in valve body which was causing the noise issue, as the original assessment had indicated no leaks within the wall cavity.
Kyle D.
Kyle D. Checked in
Responded to follow-up call regarding persistent hissing sound from master bath shower. Inspected valve assembly through access panel and confirmed diagnosis from previous visit. Replaced faulty cartridge in valve body which was causing the noise issue, as the original assessment had indicated no leaks within the wall cavity.
Boonville, IN 47601
Conducted comprehensive generator estimate at residential property. Inspected existing electrical infrastructure including CenterPoint Energy CENTRON CL200 240V 3W meter installation and assessed potential integration points for generator system. Documented current setup with photographs for proper system sizing and installation planning.
Conducted comprehensive generator estimate at residential property. Inspected existing electrical infrastructure including CenterPoint Energy CENTRON CL200 240V 3W meter installation and assessed potential integration points for generator system. Documented current setup with photographs for proper system sizing and installation planning.
Nick B.
Nick B. Checked in
Conducted comprehensive generator estimate at residential property. Inspected existing electrical infrastructure including CenterPoint Energy CENTRON CL200 240V 3W meter installation and assessed potential integration points for generator system. Documented current setup with photographs for proper system sizing and installation planning.
Boonville, IN 47601
Responded to customer concern regarding loud noise and unusual indicator lights on 17-year-old HVAC system. Diagnosed issue with condensate removal system and installed new condensate pump. Connected proper PVC drainage assembly with appropriate fittings to ensure proper water evacuation from unit. System now operating normally with all warning lights cleared.
Responded to customer concern regarding loud noise and unusual indicator lights on 17-year-old HVAC system. Diagnosed issue with condensate removal system and installed new condensate pump. Connected proper PVC drainage assembly with appropriate fittings to ensure proper water evacuation from unit. System now operating normally with all warning lights cleared.
Cameron N.
Cameron N. Checked in
Responded to customer concern regarding loud noise and unusual indicator lights on 17-year-old HVAC system. Diagnosed issue with condensate removal system and installed new condensate pump. Connected proper PVC drainage assembly with appropriate fittings to ensure proper water evacuation from unit. System now operating normally with all warning lights cleared.
Boonville, IN 47601
Performed annual maintenance on 12-year-old HVAC system as requested. Inspected mechanical components including gear assembly and linkage system. Conducted electrical diagnostics with multimeter, recording AC voltage measurement of 0.36V at equipment housing. Replaced standard 16x25x4+1" filter as part of scheduled service.
Performed annual maintenance on 12-year-old HVAC system as requested. Inspected mechanical components including gear assembly and linkage system. Conducted electrical diagnostics with multimeter, recording AC voltage measurement of 0.36V at equipment housing. Replaced standard 16x25x4+1" filter as part of scheduled service.
Brock B.
Brock B. Checked in
Performed annual maintenance on 12-year-old HVAC system as requested. Inspected mechanical components including gear assembly and linkage system. Conducted electrical diagnostics with multimeter, recording AC voltage measurement of 0.36V at equipment housing. Replaced standard 16x25x4+1" filter as part of scheduled service.
Boonville, IN 47601
Boonville, IN - Completed annual maintenance service on 7-year-old System (2nd visit of Platinum Level plan). Performed comprehensive inspection of furnace electrical components using multimeter for diagnostic testing. Replaced 24x25x4 filter and 24x25 polarized pad as scheduled. System functioning properly; customer advised plan renewal is needed.
Cameron N.
Cameron N. Checked in
Completed annual maintenance service on 7-year-old System (2nd visit of Platinum Level plan). Performed comprehensive inspection of furnace electrical components using multimeter for diagnostic testing. Replaced 24x25x4 filter and 24x25 polarized pad as scheduled. System functioning properly; customer advised plan renewal is needed.
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.