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 - Successfully installed a 3-ton 15.2 SEER heat pump system with matching air handler. Unit was properly mounted on concrete pad with gravel surround, and electrical disconnect box was installed with appropriate conduit connections to the building. System was tested and is functioning to specifications.
Ian H.
Ian H. Checked in
Successfully installed a 3-ton 15.2 SEER heat pump system with matching air handler. Unit was properly mounted on concrete pad with gravel surround, and electrical disconnect box was installed with appropriate conduit connections to the building. System was tested and is functioning to specifications.
Boonville, IN 47601
Boonville, IN - Installed and configured a complete 2.5-ton Lennox HVAC system with 13 SEER condenser and 96% efficiency furnace. System components were properly mounted in the utility room with appropriate PVC venting and all necessary electrical/refrigerant connections established according to manufacturer specifications.
Drake H.
Drake H. Checked in
Installed and configured a complete 2.5-ton Lennox HVAC system with 13 SEER condenser and 96% efficiency furnace. System components were properly mounted in the utility room with appropriate PVC venting and all necessary electrical/refrigerant connections established according to manufacturer specifications.
Boonville, IN 47601
Boonville, IN - Performed routine maintenance on 7-year-old Weatherking furnace system. Replaced 16x25x4 air filter and installed polarized media. System inspection showed normal operation with all components in working condition. First maintenance visit for this unit.
Christian C.
Christian C. Checked in
Performed routine maintenance on 7-year-old Weatherking furnace system. Replaced 16x25x4 air filter and installed polarized media. System inspection showed normal operation with all components in working condition. First maintenance visit for this unit.
Boonville, IN 47601
Inspected existing Richmond water heater installation in basement utility area. System appears to be a standard tank-type water heater with proper connections including pressure relief valve and expansion tank. Verified all plumbing connections, including PVC and copper piping. System is functioning normally with no apparent leaks or safety concerns.
Inspected existing Richmond water heater installation in basement utility area. System appears to be a standard tank-type water heater with proper connections including pressure relief valve and expansion tank. Verified all plumbing connections, including PVC and copper piping. System is functioning normally with no apparent leaks or safety concerns.
Kyle D.
Kyle D. Checked in
Inspected existing Richmond water heater installation in basement utility area. System appears to be a standard tank-type water heater with proper connections including pressure relief valve and expansion tank. Verified all plumbing connections, including PVC and copper piping. System is functioning normally with no apparent leaks or safety concerns.
Boonville, IN 47601
Boonville, IN - Conducted comprehensive assessment of existing HVAC system for potential replacement. Inspected electrical connections and conduit installation in mechanical room, noting aged components and possible water damage to surrounding structure. Documented current system condition with detailed photos to support replacement recommendation.
Nick B.
Nick B. Checked in
Conducted comprehensive assessment of existing HVAC system for potential replacement. Inspected electrical connections and conduit installation in mechanical room, noting aged components and possible water damage to surrounding structure. Documented current system condition with detailed photos to support replacement recommendation.
Boonville, IN 47601
Completed annual Platinum Level maintenance service on 6-year-old HVAC system. Performed comprehensive inspection including temperature differential measurements at radiator and airflow testing at floor registers. Replaced 16x25x5 filter as part of scheduled maintenance protocol. System functioning within normal parameters; customer renewed service agreement for next year.
Completed annual Platinum Level maintenance service on 6-year-old HVAC system. Performed comprehensive inspection including temperature differential measurements at radiator and airflow testing at floor registers. Replaced 16x25x5 filter as part of scheduled maintenance protocol. System functioning within normal parameters; customer renewed service agreement for next year.
Michael H.
Michael H. Checked in
Completed annual Platinum Level maintenance service on 6-year-old HVAC system. Performed comprehensive inspection including temperature differential measurements at radiator and airflow testing at floor registers. Replaced 16x25x5 filter as part of scheduled maintenance protocol. System functioning within normal parameters; customer renewed service agreement for next year.
Boonville, IN 47601
Boonville, IN - Completed annual Platinum Level maintenance on 14-year-old HVAC system. Replaced 20x25x5 filter, inspected all components and connections, and performed comprehensive system cleaning. Customer renewed maintenance agreement for continued service following previous maintenance from 10/2025.
Michael H.
Michael H. Checked in
Completed annual Platinum Level maintenance on 14-year-old HVAC system. Replaced 20x25x5 filter, inspected all components and connections, and performed comprehensive system cleaning. Customer renewed maintenance agreement for continued service following previous maintenance from 10/2025.
Boonville, IN 47601
Boonville, IN - Performed annual maintenance on 16-year-old system with CFI filtration (Platinum Level). Conducted amperage testing with Fieldpiece SC440 multimeter, confirming unit is operating at 35.5 amps within manufacturer specifications. System is functioning properly with all components in working order.
Michael H.
Michael H. Checked in
Performed annual maintenance on 16-year-old system with CFI filtration (Platinum Level). Conducted amperage testing with Fieldpiece SC440 multimeter, confirming unit is operating at 35.5 amps within manufacturer specifications. System is functioning properly with all components in working order.
Boonville, IN 47601
Boonville, IN - Completed annual maintenance service on residential HVAC system per Platinum Level agreement. Inspected furnace, air handler, and ductwork connections in utility room. System appears properly installed with appropriate ventilation and connections. Replaced air filter and verified all seals and connections are secure.
Craig U.
Craig U. Checked in
Completed annual maintenance service on residential HVAC system per Platinum Level agreement. Inspected furnace, air handler, and ductwork connections in utility room. System appears properly installed with appropriate ventilation and connections. Replaced air filter and verified all seals and connections are secure.
Boonville, IN 47601
Boonville, IN - Responded to emergency call for strong gas odor inside residence. Upon arrival, conducted thorough inspection of 4-year-old HVAC system and surrounding gas lines. Located and repaired gas leak at exterior connection point near drainage system on brick exterior wall, ensuring complete elimination of hazardous conditions and confirming proper system operation before departure.
Cameron N.
Cameron N. Checked in
Responded to emergency call for strong gas odor inside residence. Upon arrival, conducted thorough inspection of 4-year-old HVAC system and surrounding gas lines. Located and repaired gas leak at exterior connection point near drainage system on brick exterior wall, ensuring complete elimination of hazardous conditions and confirming proper system operation before departure.
Boonville, IN 47601
Conducted comprehensive assessment of existing outdoor HVAC condensing unit installed on gravel bed adjacent to stone veneer exterior wall. Unit appears to have standard electrical disconnect box mounted on metal post with proper connections to building. Evaluated system for potential replacement options as requested by homeowner Jeremy, with both Jeremy and Jake present during the consultation.
Conducted comprehensive assessment of existing outdoor HVAC condensing unit installed on gravel bed adjacent to stone veneer exterior wall. Unit appears to have standard electrical disconnect box mounted on metal post with proper connections to building. Evaluated system for potential replacement options as requested by homeowner Jeremy, with both Jeremy and Jake present during the consultation.
Jake T.
Jake T. Checked in
Conducted comprehensive assessment of existing outdoor HVAC condensing unit installed on gravel bed adjacent to stone veneer exterior wall. Unit appears to have standard electrical disconnect box mounted on metal post with proper connections to building. Evaluated system for potential replacement options as requested by homeowner Jeremy, with both Jeremy and Jake present during the consultation.
Boonville, IN 47601
Boonville, IN - Conducted warranty service inspection for Clarence Davis to assess heat exchanger replacement needs. Documented existing HVAC system components with photographs and determined half-day repair timeline would be sufficient. Collected model/serial number information to expedite warranty part ordering process.
Brock B.
Brock B. Checked in
Conducted warranty service inspection for Clarence Davis to assess heat exchanger replacement needs. Documented existing HVAC system components with photographs and determined half-day repair timeline would be sufficient. Collected model/serial number information to expedite warranty part ordering process.
Boonville, IN 47601
Boonville, IN - Completed annual platinum maintenance on 1-year-old HVAC system. Performed comprehensive inspection of internal components including motor assembly, gas valve, control components, and circuit board connections. Replaced 16x25x5 filter and confirmed all electrical connections are secure and functioning properly.
Michael H.
Michael H. Checked in
Completed annual platinum maintenance on 1-year-old HVAC system. Performed comprehensive inspection of internal components including motor assembly, gas valve, control components, and circuit board connections. Replaced 16x25x5 filter and confirmed all electrical connections are secure and functioning properly.
Boonville, IN 47601
Diagnosed an 11-year-old HVAC system experiencing insufficient heating despite unit operation. Inspection of electrical control panel revealed faulty wiring connections at the relay terminals. Repaired damaged connections and verified proper system function, restoring normal heating operation. System now maintaining desired temperature without reliance on secondary wood-burning heat source.
Diagnosed an 11-year-old HVAC system experiencing insufficient heating despite unit operation. Inspection of electrical control panel revealed faulty wiring connections at the relay terminals. Repaired damaged connections and verified proper system function, restoring normal heating operation. System now maintaining desired temperature without reliance on secondary wood-burning heat source.
Craig U.
Craig U. Checked in
Diagnosed an 11-year-old HVAC system experiencing insufficient heating despite unit operation. Inspection of electrical control panel revealed faulty wiring connections at the relay terminals. Repaired damaged connections and verified proper system function, restoring normal heating operation. System now maintaining desired temperature without reliance on secondary wood-burning heat source.
Boonville, IN 47601
Performed annual Gold Level maintenance service on two mini-split systems installed July 2025. Conducted comprehensive system diagnostics including electrical testing with clamp meter and refrigerant pressure checks. Verified proper leveling of wall-mounted indoor unit and inspected connections. All systems operating within manufacturer specifications despite winter conditions.
Performed annual Gold Level maintenance service on two mini-split systems installed July 2025. Conducted comprehensive system diagnostics including electrical testing with clamp meter and refrigerant pressure checks. Verified proper leveling of wall-mounted indoor unit and inspected connections. All systems operating within manufacturer specifications despite winter conditions.
Jacob D.
Jacob D. Checked in
Performed annual Gold Level maintenance service on two mini-split systems installed July 2025. Conducted comprehensive system diagnostics including electrical testing with clamp meter and refrigerant pressure checks. Verified proper leveling of wall-mounted indoor unit and inspected connections. All systems operating within manufacturer specifications despite winter conditions.
Boonville, IN 47601
Conducted comprehensive replacement estimate for 20-year-old Gibson HVAC system in mobile home. Assessed existing outdoor unit showing signs of age and weathering, and inspected Honeywell thermostat currently maintaining interior temperature at 67°F. Customer specifically interested in replacement options with improved efficiency rather than repair alternatives, with no concerns about existing ductwork.
Conducted comprehensive replacement estimate for 20-year-old Gibson HVAC system in mobile home. Assessed existing outdoor unit showing signs of age and weathering, and inspected Honeywell thermostat currently maintaining interior temperature at 67°F. Customer specifically interested in replacement options with improved efficiency rather than repair alternatives, with no concerns about existing ductwork.
Nick B.
Nick B. Checked in
Conducted comprehensive replacement estimate for 20-year-old Gibson HVAC system in mobile home. Assessed existing outdoor unit showing signs of age and weathering, and inspected Honeywell thermostat currently maintaining interior temperature at 67°F. Customer specifically interested in replacement options with improved efficiency rather than repair alternatives, with no concerns about existing ductwork.
Boonville, IN 47601
Completed installation of a 2-ton 15.5 SEER 97% efficient system in Boonville as sold by Brookman. System includes a high-efficiency furnace with PVC venting and properly connected ductwork. All components were securely installed in the basement utility area with appropriate electrical connections and drainage setup.
Completed installation of a 2-ton 15.5 SEER 97% efficient system in Boonville as sold by Brookman. System includes a high-efficiency furnace with PVC venting and properly connected ductwork. All components were securely installed in the basement utility area with appropriate electrical connections and drainage setup.
Cole B.
Cole B. Checked in
Completed installation of a 2-ton 15.5 SEER 97% efficient system in Boonville as sold by Brookman. System includes a high-efficiency furnace with PVC venting and properly connected ductwork. All components were securely installed in the basement utility area with appropriate electrical connections and drainage setup.
Boonville, IN 47601
Responded to no-heat call for 5-year-old system with no airflow and unresponsive thermostat. Upon inspection, identified faulty electrical connection in the control panel causing system failure. Repaired wiring connections and verified heating elements were intact and operational. System now functioning properly with normal airflow and temperature control.
Responded to no-heat call for 5-year-old system with no airflow and unresponsive thermostat. Upon inspection, identified faulty electrical connection in the control panel causing system failure. Repaired wiring connections and verified heating elements were intact and operational. System now functioning properly with normal airflow and temperature control.
Cameron N.
Cameron N. Checked in
Responded to no-heat call for 5-year-old system with no airflow and unresponsive thermostat. Upon inspection, identified faulty electrical connection in the control panel causing system failure. Repaired wiring connections and verified heating elements were intact and operational. System now functioning properly with normal airflow and temperature control.
Boonville, IN 47601
Completed planned maintenance service on HVAC system. Identified damaged filter (20x25x4) requiring replacement. Unable to complete second maintenance visit as scheduled; renewal service needed for annual maintenance program.
Completed planned maintenance service on HVAC system. Identified damaged filter (20x25x4) requiring replacement. Unable to complete second maintenance visit as scheduled; renewal service needed for annual maintenance program.
Michael H.
Michael H. Checked in
Completed planned maintenance service on HVAC system. Identified damaged filter (20x25x4) requiring replacement. Unable to complete second maintenance visit as scheduled; renewal service needed for annual maintenance program.
Boonville, IN 47601
Successfully completed gas leak repair by replacing compromised gas lines in basement utility area. Performed thorough inspection of all connections to water heater system and adjacent plumbing infrastructure. System now operating safely with all gas connections properly sealed and tested for integrity.
Successfully completed gas leak repair by replacing compromised gas lines in basement utility area. Performed thorough inspection of all connections to water heater system and adjacent plumbing infrastructure. System now operating safely with all gas connections properly sealed and tested for integrity.
Kevin H.
Kevin H. Checked in
Successfully completed gas leak repair by replacing compromised gas lines in basement utility area. Performed thorough inspection of all connections to water heater system and adjacent plumbing infrastructure. System now operating safely with all gas connections properly sealed and tested for integrity.
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.