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.

Call Today 833-232-4328 Schedule Online
FREE ESTIMATE Schedule Today! Request Service

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 monthly Platinum Level maintenance on Lennox AC system. Inspected outdoor condenser unit, verified proper electrical connections and mounting on pad. Cleaned blower wheel assembly and checked for proper operation with no dust buildup or damage observed. Replaced 20x20x5 filter as per maintenance schedule.
Completed monthly Platinum Level maintenance on Lennox AC system. Inspected outdoor condenser unit, verified proper electrical connections and mounting on pad. Cleaned blower wheel assembly and checked for proper operation with no dust buildup or damage observed. Replaced 20x20x5 filter as per maintenance schedule.
Jeremiah H.
Jeremiah H. Checked in
Completed monthly Platinum Level maintenance on Lennox AC system. Inspected outdoor condenser unit, verified proper electrical connections and mounting on pad. Cleaned blower wheel assembly and checked for proper operation with no dust buildup or damage observed. Replaced 20x20x5 filter as per maintenance schedule.
Boonville, IN 47601
Boonville, IN - Performed follow-up service to complete previously unfinished work on the humidifier system. Successfully installed an AprilAire bypass humidifier to replace the existing unit, replacing damaged drain pipe that had been chipped off. Verified proper electrical connections with control wiring, but noted the unit is not functioning properly despite installation completion - further diagnosis required.
Danny M.
Danny M. Checked in
Performed follow-up service to complete previously unfinished work on the humidifier system. Successfully installed an AprilAire bypass humidifier to replace the existing unit, replacing damaged drain pipe that had been chipped off. Verified proper electrical connections with control wiring, but noted the unit is not functioning properly despite installation completion - further diagnosis required.
Boonville, IN 47601
Successfully completed a scheduled maintenance flush on a Navien tankless water heater system to remove mineral buildup and sediment. Performed a thorough flush of the heat exchanger using appropriate descaling solution, ensuring proper flow through all components and collecting discharge in containment vessel. System was properly reassembled, tested for operation, and returned to service in optimal working condition.
Successfully completed a scheduled maintenance flush on a Navien tankless water heater system to remove mineral buildup and sediment. Performed a thorough flush of the heat exchanger using appropriate descaling solution, ensuring proper flow through all components and collecting discharge in containment vessel. System was properly reassembled, tested for operation, and returned to service in optimal working condition.
Isaac G.
Isaac G. Checked in
Successfully completed a scheduled maintenance flush on a Navien tankless water heater system to remove mineral buildup and sediment. Performed a thorough flush of the heat exchanger using appropriate descaling solution, ensuring proper flow through all components and collecting discharge in containment vessel. System was properly reassembled, tested for operation, and returned to service in optimal working condition.
Boonville, IN 47601
Performed scheduled annual maintenance on a 1-year-old AO Smith ProLine tanked water heater, completing the second maintenance visit since installation. Successfully flushed the system to remove sediment buildup, inspected all connections and verified proper venting through the galvanized exhaust flue. Noted some water pooling on exterior concrete walkway, which was documented with photos.
Performed scheduled annual maintenance on a 1-year-old AO Smith ProLine tanked water heater, completing the second maintenance visit since installation. Successfully flushed the system to remove sediment buildup, inspected all connections and verified proper venting through the galvanized exhaust flue. Noted some water pooling on exterior concrete walkway, which was documented with photos.
Kyle D.
Kyle D. Checked in
Performed scheduled annual maintenance on a 1-year-old AO Smith ProLine tanked water heater, completing the second maintenance visit since installation. Successfully flushed the system to remove sediment buildup, inspected all connections and verified proper venting through the galvanized exhaust flue. Noted some water pooling on exterior concrete walkway, which was documented with photos.
Boonville, IN 47601
Completed annual platinum maintenance on 16X25X5 NSSU system installed 12/9/25. Inspected control board and electrical connections, ensuring all wiring was properly secured and components functioning correctly. Examined outdoor condenser unit, verified proper clearance around equipment, and confirmed system operation according to manufacturer specifications.
Completed annual platinum maintenance on 16X25X5 NSSU system installed 12/9/25. Inspected control board and electrical connections, ensuring all wiring was properly secured and components functioning correctly. Examined outdoor condenser unit, verified proper clearance around equipment, and confirmed system operation according to manufacturer specifications.
Jacob D.
Jacob D. Checked in
Completed annual platinum maintenance on 16X25X5 NSSU system installed 12/9/25. Inspected control board and electrical connections, ensuring all wiring was properly secured and components functioning correctly. Examined outdoor condenser unit, verified proper clearance around equipment, and confirmed system operation according to manufacturer specifications.
Boonville, IN 47601
Boonville, IN - Performed monthly maintenance on 7-year-old HVAC system in Platinum Level. Unable to access upper components. Inspected control board and electrical connections using multimeter, focusing on accessible blower motor assembly and associated wiring. Replaced 20x20x5 filter and documented system condition with photos for follow-up service.
Michael H.
Michael H. Checked in
Performed monthly maintenance on 7-year-old HVAC system in Platinum Level. Unable to access upper components. Inspected control board and electrical connections using multimeter, focusing on accessible blower motor assembly and associated wiring. Replaced 20x20x5 filter and documented system condition with photos for follow-up service.
Boonville, IN 47601
Completed routine maintenance on a 2-year-old HVAC system at Platinum Level (1 of 2 tickets). Inspected and verified 20x20x5 filter. Conducted temperature measurements with readings of 86.9°F at supply and 61.7°F at return, indicating proper system operation. Documented condition with photos.
Completed routine maintenance on a 2-year-old HVAC system at Platinum Level (1 of 2 tickets). Inspected and verified 20x20x5 filter. Conducted temperature measurements with readings of 86.9°F at supply and 61.7°F at return, indicating proper system operation. Documented condition with photos.
Michael H.
Michael H. Checked in
Completed routine maintenance on a 2-year-old HVAC system at Platinum Level (1 of 2 tickets). Inspected and verified 20x20x5 filter. Conducted temperature measurements with readings of 86.9°F at supply and 61.7°F at return, indicating proper system operation. Documented condition with photos.
Boonville, IN 47601
Diagnosed and repaired non-functioning outdoor condensing unit, discovered failed capacitor and defective contactor preventing proper cooling operation on aging system. Replaced components, tested system operation, and verified proper cooling performance with customer's Nest thermostat now showing appropriate temperature differential.
Diagnosed and repaired non-functioning outdoor condensing unit, discovered failed capacitor and defective contactor preventing proper cooling operation on aging system. Replaced components, tested system operation, and verified proper cooling performance with customer's Nest thermostat now showing appropriate temperature differential.
Francis I.
Francis I. Checked in
Diagnosed and repaired non-functioning outdoor condensing unit, discovered failed capacitor and defective contactor preventing proper cooling operation on aging system. Replaced components, tested system operation, and verified proper cooling performance with customer's Nest thermostat now showing appropriate temperature differential.
Boonville, IN 47601
Responded to water leak concern where customer had exposed pipe with visible floor rot. Upon inspection of the 12-year-old system, identified leak in PVC condensate drain pipe where it transitions from the air handler into the crawl space. Replaced damaged section of drain line with proper grade and supports, ensuring correct installation to prevent future water damage.
Responded to water leak concern where customer had exposed pipe with visible floor rot. Upon inspection of the 12-year-old system, identified leak in PVC condensate drain pipe where it transitions from the air handler into the crawl space. Replaced damaged section of drain line with proper grade and supports, ensuring correct installation to prevent future water damage.
Kevin H.
Kevin H. Checked in
Responded to water leak concern where customer had exposed pipe with visible floor rot. Upon inspection of the 12-year-old system, identified leak in PVC condensate drain pipe where it transitions from the air handler into the crawl space. Replaced damaged section of drain line with proper grade and supports, ensuring correct installation to prevent future water damage.
Boonville, IN 47601
Boonville, IN - Performed routine maintenance on a 13-year-old AC system with CM2025. Inspected internal components including electrical wiring, control systems, and insulation; noted normal dust accumulation and wear. System is functioning properly with no issues identified during the comprehensive tune-up service.
Cameron N.
Cameron N. Checked in
Performed routine maintenance on a 13-year-old AC system with CM2025. Inspected internal components including electrical wiring, control systems, and insulation; noted normal dust accumulation and wear. System is functioning properly with no issues identified during the comprehensive tune-up service.
Boonville, IN 47601
Performed Gold Level annual maintenance on a 14-year-old Carrier HVAC system. Inspected outdoor condenser unit (mounted on concrete pad against brick wall) and verified thermostat operation. Replaced 20x25x5 air filter as part of scheduled first visit service.
Performed Gold Level annual maintenance on a 14-year-old Carrier HVAC system. Inspected outdoor condenser unit (mounted on concrete pad against brick wall) and verified thermostat operation. Replaced 20x25x5 air filter as part of scheduled first visit service.
Jeremiah H.
Jeremiah H. Checked in
Performed Gold Level annual maintenance on a 14-year-old Carrier HVAC system. Inspected outdoor condenser unit (mounted on concrete pad against brick wall) and verified thermostat operation. Replaced 20x25x5 air filter as part of scheduled first visit service.
Boonville, IN 47601
Boonville, IN - Performed Platinum Level maintenance on two systems (8 years old) with temperature verification using digital thermometer showing 45.0°F reading. Inspected and replaced filters (20x25x5 and 16x25x5) according to maintenance schedule. This is the first annual visit; next service due 9/2025.
Michael H.
Michael H. Checked in
Performed Platinum Level maintenance on two systems (8 years old) with temperature verification using digital thermometer showing 45.0°F reading. Inspected and replaced filters (20x25x5 and 16x25x5) according to maintenance schedule. This is the first annual visit; next service due 9/2025.
Boonville, IN 47601
Completed annual maintenance on a residential HVAC system (installed 4/3/25). Conducted thorough inspection of attic-mounted air handler, replaced 20x25x5 filters, and verified temperature differential reading of 130°. System is functioning properly; customer renewed service agreement for continued maintenance.
Completed annual maintenance on a residential HVAC system (installed 4/3/25). Conducted thorough inspection of attic-mounted air handler, replaced 20x25x5 filters, and verified temperature differential reading of 130°. System is functioning properly; customer renewed service agreement for continued maintenance.
Michael H.
Michael H. Checked in
Completed annual maintenance on a residential HVAC system (installed 4/3/25). Conducted thorough inspection of attic-mounted air handler, replaced 20x25x5 filters, and verified temperature differential reading of 130°. System is functioning properly; customer renewed service agreement for continued maintenance.
Boonville, IN 47601
Responded to a no cooling complaint where system was not reaching the set temperature of 69°F. Diagnostic testing revealed supply air temperature of 52.9°F at the register. Inspected Lennox outdoor unit and verified proper operation; system is now cooling effectively.
Responded to a no cooling complaint where system was not reaching the set temperature of 69°F. Diagnostic testing revealed supply air temperature of 52.9°F at the register. Inspected Lennox outdoor unit and verified proper operation; system is now cooling effectively.
Jacob D.
Jacob D. Checked in
Responded to a no cooling complaint where system was not reaching the set temperature of 69°F. Diagnostic testing revealed supply air temperature of 52.9°F at the register. Inspected Lennox outdoor unit and verified proper operation; system is now cooling effectively.
Boonville, IN 47601
Performed scheduled 1st visit annual maintenance on 1-year-old HVAC system. Inspected and replaced 20x25x5 air filters in basement-installed furnace unit with PVC exhaust. Examined outdoor condensing unit mounted on concrete pad, confirming proper operation and condition of electrical connections. Documented system condition with photographs of both indoor and outdoor components.
Performed scheduled 1st visit annual maintenance on 1-year-old HVAC system. Inspected and replaced 20x25x5 air filters in basement-installed furnace unit with PVC exhaust. Examined outdoor condensing unit mounted on concrete pad, confirming proper operation and condition of electrical connections. Documented system condition with photographs of both indoor and outdoor components.
Jeremiah H.
Jeremiah H. Checked in
Performed scheduled 1st visit annual maintenance on 1-year-old HVAC system. Inspected and replaced 20x25x5 air filters in basement-installed furnace unit with PVC exhaust. Examined outdoor condensing unit mounted on concrete pad, confirming proper operation and condition of electrical connections. Documented system condition with photographs of both indoor and outdoor components.
Boonville, IN 47601
Successfully removed wall behind shower stall to access plumbing, then replaced the existing shower valve assembly with new components. Installed new matte black shower trim kit including valve control with lever handle and matching bathtub spout, completing the fixture upgrade with proper connections to the existing copper supply lines.
Successfully removed wall behind shower stall to access plumbing, then replaced the existing shower valve assembly with new components. Installed new matte black shower trim kit including valve control with lever handle and matching bathtub spout, completing the fixture upgrade with proper connections to the existing copper supply lines.
Kyle D.
Kyle D. Checked in
Successfully removed wall behind shower stall to access plumbing, then replaced the existing shower valve assembly with new components. Installed new matte black shower trim kit including valve control with lever handle and matching bathtub spout, completing the fixture upgrade with proper connections to the existing copper supply lines.
Boonville, IN 47601
Performed scheduled 6-month maintenance visit on HVAC system. Inspected and photographed circuit board components, verifying proper wire connections to terminals (red, blue, yellow, white, and black). Examined blower motor assembly and electronic control board for any visible issues; all components appear to be functioning normally with no signs of damage or wear.
Performed scheduled 6-month maintenance visit on HVAC system. Inspected and photographed circuit board components, verifying proper wire connections to terminals (red, blue, yellow, white, and black). Examined blower motor assembly and electronic control board for any visible issues; all components appear to be functioning normally with no signs of damage or wear.
Brent D.
Brent D. Checked in
Performed scheduled 6-month maintenance visit on HVAC system. Inspected and photographed circuit board components, verifying proper wire connections to terminals (red, blue, yellow, white, and black). Examined blower motor assembly and electronic control board for any visible issues; all components appear to be functioning normally with no signs of damage or wear.
Boonville, IN 47601
Boonville, IN - Completed diagnostic on frozen geothermal system under warranty. Identified faulty circulation pump assembly mounted on brick wall. Documented model/serial numbers and photographed the component for expedited part ordering. System currently operational with part replacement scheduled for follow-up service.
Shawn M.
Shawn M. Checked in
Completed diagnostic on frozen geothermal system under warranty. Identified faulty circulation pump assembly mounted on brick wall. Documented model/serial numbers and photographed the component for expedited part ordering. System currently operational with part replacement scheduled for follow-up service.
Boonville, IN 47601
Completed scheduled Platinum Level maintenance on HVAC system, replacing 25x25x5 filter as part of regular service plan. Inspected copper piping system showing oxidation and aging, particularly on main riser with elbow joint. System functioning properly despite visible pipe wear; documented condition with photos for future reference.
Completed scheduled Platinum Level maintenance on HVAC system, replacing 25x25x5 filter as part of regular service plan. Inspected copper piping system showing oxidation and aging, particularly on main riser with elbow joint. System functioning properly despite visible pipe wear; documented condition with photos for future reference.
Michael H.
Michael H. Checked in
Completed scheduled Platinum Level maintenance on HVAC system, replacing 25x25x5 filter as part of regular service plan. Inspected copper piping system showing oxidation and aging, particularly on main riser with elbow joint. System functioning properly despite visible pipe wear; documented condition with photos for future reference.
Boonville, IN 47601
Completed platinum level maintenance on a 7-year-old system with 20x25x5 filter. Inspected condensate drain lines and connections for proper drainage. Temperature differential readings were taken with digital meter, confirming system is operating within specifications.
Completed platinum level maintenance on a 7-year-old system with 20x25x5 filter. Inspected condensate drain lines and connections for proper drainage. Temperature differential readings were taken with digital meter, confirming system is operating within specifications.
Michael H.
Michael H. Checked in
Completed platinum level maintenance on a 7-year-old system with 20x25x5 filter. Inspected condensate drain lines and connections for proper drainage. Temperature differential readings were taken with digital meter, confirming system is operating within specifications.
Boonville, IN 47601
Start Saving Today With

Membership Perks

Start Saving Today With

Membership Perks

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.

Review Image
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.