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

Performed scheduled platinum-level maintenance on HVAC system, including replacement of 20x25x5 filter which was 5 years old and due for monthly service. Inspected water heater connections and exhaust venting for proper installation. Cleaned blower wheel assembly to remove accumulated dust and debris, ensuring optimal system performance and airflow.
Performed scheduled platinum-level maintenance on HVAC system, including replacement of 20x25x5 filter which was 5 years old and due for monthly service. Inspected water heater connections and exhaust venting for proper installation. Cleaned blower wheel assembly to remove accumulated dust and debris, ensuring optimal system performance and airflow.
Jeremiah H.
Jeremiah H. Checked in
Performed scheduled platinum-level maintenance on HVAC system, including replacement of 20x25x5 filter which was 5 years old and due for monthly service. Inspected water heater connections and exhaust venting for proper installation. Cleaned blower wheel assembly to remove accumulated dust and debris, ensuring optimal system performance and airflow.
Boonville, IN 47601
Performed routine maintenance inspection on customer's mini-split system. Examined wall-mounted indoor unit and ceiling air register for proper operation. Reviewed and verified BAM washable filters are in good condition; no service required at this time.
Performed routine maintenance inspection on customer's mini-split system. Examined wall-mounted indoor unit and ceiling air register for proper operation. Reviewed and verified BAM washable filters are in good condition; no service required at this time.
Brock B.
Brock B. Checked in
Performed routine maintenance inspection on customer's mini-split system. Examined wall-mounted indoor unit and ceiling air register for proper operation. Reviewed and verified BAM washable filters are in good condition; no service required at this time.
Boonville, IN 47601
Completed installation of a 3.5-ton 14 SEER/9.7 HSPF upflow/horizontal split system in a new construction residence. Unit was properly mounted in the mechanical closet with required insulation and drainage line was routed along the exterior of the building per specifications. Site was left in clean condition with all equipment operational.
Completed installation of a 3.5-ton 14 SEER/9.7 HSPF upflow/horizontal split system in a new construction residence. Unit was properly mounted in the mechanical closet with required insulation and drainage line was routed along the exterior of the building per specifications. Site was left in clean condition with all equipment operational.
Drake H.
Drake H. Checked in
Completed installation of a 3.5-ton 14 SEER/9.7 HSPF upflow/horizontal split system in a new construction residence. Unit was properly mounted in the mechanical closet with required insulation and drainage line was routed along the exterior of the building per specifications. Site was left in clean condition with all equipment operational.
Boonville, IN 47601
Completed annual planned maintenance on HVAC system as part of Platinum Level service agreement (second visit this year). Inspected system operation, verified thermostat functionality with proper temperature control at 72°F, and examined water heater for any issues. Replaced 16x20x5 air filter. Noted service agreement requires renewal.
Completed annual planned maintenance on HVAC system as part of Platinum Level service agreement (second visit this year). Inspected system operation, verified thermostat functionality with proper temperature control at 72°F, and examined water heater for any issues. Replaced 16x20x5 air filter. Noted service agreement requires renewal.
Jeremiah H.
Jeremiah H. Checked in
Completed annual planned maintenance on HVAC system as part of Platinum Level service agreement (second visit this year). Inspected system operation, verified thermostat functionality with proper temperature control at 72°F, and examined water heater for any issues. Replaced 16x20x5 air filter. Noted service agreement requires renewal.
Boonville, IN 47601
Completed installation of a 3-ton Lennox HVAC complete system in a downstairs/basement location. Installed new outdoor condenser unit on concrete pad with proper line connections to the home. Set up interior furnace unit with PVC ventilation pipes and connected to existing ductwork in the utility area.
Completed installation of a 3-ton Lennox HVAC complete system in a downstairs/basement location. Installed new outdoor condenser unit on concrete pad with proper line connections to the home. Set up interior furnace unit with PVC ventilation pipes and connected to existing ductwork in the utility area.
Adam M.
Adam M. Checked in
Completed installation of a 3-ton Lennox HVAC complete system in a downstairs/basement location. Installed new outdoor condenser unit on concrete pad with proper line connections to the home. Set up interior furnace unit with PVC ventilation pipes and connected to existing ductwork in the utility area.
Boonville, IN 47601
Boonville, IN - Performed scheduled maintenance on wall-mounted inverter air conditioning unit in utility room. Inspected unit, cleaned filters, and verified proper operation. System is functioning within normal parameters with no issues identified.
Jeremiah H.
Jeremiah H. Checked in
Performed scheduled maintenance on wall-mounted inverter air conditioning unit in utility room. Inspected unit, cleaned filters, and verified proper operation. System is functioning within normal parameters with no issues identified.
Boonville, IN 47601
Boonville, IN - Performed scheduled Platinum Level maintenance on 15-year-old HVAC system. Accessed internal components, inspected electrical connections and circuit boards using Fieldpiece multimeter. Replaced 16x25x5 filter as part of regular maintenance protocol.
Cameron N.
Cameron N. Checked in
Performed scheduled Platinum Level maintenance on 15-year-old HVAC system. Accessed internal components, inspected electrical connections and circuit boards using Fieldpiece multimeter. Replaced 16x25x5 filter as part of regular maintenance protocol.
Boonville, IN 47601
Boonville, IN - Completed scheduled maintenance on single HVAC system with washable filters. Performed comprehensive inspection of furnace interior components, including examination of gas valve, motor assembly, control boards, and electrical connections. All wiring harnesses and electronic components were verified to be properly secured and functioning correctly.
Christian C.
Christian C. Checked in
Completed scheduled maintenance on single HVAC system with washable filters. Performed comprehensive inspection of furnace interior components, including examination of gas valve, motor assembly, control boards, and electrical connections. All wiring harnesses and electronic components were verified to be properly secured and functioning correctly.
Boonville, IN 47601
Boonville, IN - Completed scheduled maintenance visit (2nd of 3) for HVAC system. Replaced 16x25x5 air filter as part of regular 3-year maintenance plan. Noted corrosion on water pipe connection near heating unit which should be monitored but requires no immediate action.
Jeremiah H.
Jeremiah H. Checked in
Completed scheduled maintenance visit (2nd of 3) for HVAC system. Replaced 16x25x5 air filter as part of regular 3-year maintenance plan. Noted corrosion on water pipe connection near heating unit which should be monitored but requires no immediate action.
Boonville, IN 47601
Boonville, IN - Completed scheduled gold maintenance service on a 7-year-old residential HVAC system. Inspected outdoor unit mounted on concrete pad adjacent to home's brick exterior. System appears to be functioning properly with no visible issues noted during this maintenance visit.
Michael H.
Michael H. Checked in
Completed scheduled gold maintenance service on a 7-year-old residential HVAC system. Inspected outdoor unit mounted on concrete pad adjacent to home's brick exterior. System appears to be functioning properly with no visible issues noted during this maintenance visit.
Boonville, IN 47601
Performed monthly maintenance service on 3-year-old HVAC system per Platinum Level agreement. Inspected evaporator coil assembly which showed normal dust accumulation. Discovered significant wall damage with possible mold growth near the air handler and replaced the 20x20x5 filter. Recommended professional remediation for the wall damage and mold issue to prevent system contamination and ensure proper airflow.
Performed monthly maintenance service on 3-year-old HVAC system per Platinum Level agreement. Inspected evaporator coil assembly which showed normal dust accumulation. Discovered significant wall damage with possible mold growth near the air handler and replaced the 20x20x5 filter. Recommended professional remediation for the wall damage and mold issue to prevent system contamination and ensure proper airflow.
Michael H.
Michael H. Checked in
Performed monthly maintenance service on 3-year-old HVAC system per Platinum Level agreement. Inspected evaporator coil assembly which showed normal dust accumulation. Discovered significant wall damage with possible mold growth near the air handler and replaced the 20x20x5 filter. Recommended professional remediation for the wall damage and mold issue to prevent system contamination and ensure proper airflow.
Boonville, IN 47601
Responded to no-heat call for tenant-occupied property with reported non-functioning furnace. Upon arrival, performed complete system diagnostic and discovered tripped circuit breaker at main electrical panel. Reset breaker, verified proper voltage to unit, and confirmed system operation. Cycled system through multiple heating cycles to ensure reliable operation and proper airflow through vents. System is now functioning normally with no additional issues detected.
Responded to no-heat call for tenant-occupied property with reported non-functioning furnace. Upon arrival, performed complete system diagnostic and discovered tripped circuit breaker at main electrical panel. Reset breaker, verified proper voltage to unit, and confirmed system operation. Cycled system through multiple heating cycles to ensure reliable operation and proper airflow through vents. System is now functioning normally with no additional issues detected.
Shawn M.
Shawn M. Checked in
Responded to no-heat call for tenant-occupied property with reported non-functioning furnace. Upon arrival, performed complete system diagnostic and discovered tripped circuit breaker at main electrical panel. Reset breaker, verified proper voltage to unit, and confirmed system operation. Cycled system through multiple heating cycles to ensure reliable operation and proper airflow through vents. System is now functioning normally with no additional issues detected.
Boonville, IN 47601
Performed annual maintenance on 17-year-old system (2nd visit of Platinum plan). Replaced 20x25x5 filter and conducted electrical diagnostics showing 42.6 amp reading on compressor. Inspected wiring connections at control board, confirming proper terminal connections. Customer renewed service agreement.
Performed annual maintenance on 17-year-old system (2nd visit of Platinum plan). Replaced 20x25x5 filter and conducted electrical diagnostics showing 42.6 amp reading on compressor. Inspected wiring connections at control board, confirming proper terminal connections. Customer renewed service agreement.
Brock B.
Brock B. Checked in
Performed annual maintenance on 17-year-old system (2nd visit of Platinum plan). Replaced 20x25x5 filter and conducted electrical diagnostics showing 42.6 amp reading on compressor. Inspected wiring connections at control board, confirming proper terminal connections. Customer renewed service agreement.
Boonville, IN 47601
Responded to service call regarding a hissing noise from master bathroom shower head area. Upon inspection, discovered issue related to water heater connections. Verified the integrity of plumbing system including hot and cold water lines, pressure relief valve, and ventilation components. Made necessary adjustments to eliminate the noise and ensure proper operation of the water heating system.
Responded to service call regarding a hissing noise from master bathroom shower head area. Upon inspection, discovered issue related to water heater connections. Verified the integrity of plumbing system including hot and cold water lines, pressure relief valve, and ventilation components. Made necessary adjustments to eliminate the noise and ensure proper operation of the water heating system.
Kyle D.
Kyle D. Checked in
Responded to service call regarding a hissing noise from master bathroom shower head area. Upon inspection, discovered issue related to water heater connections. Verified the integrity of plumbing system including hot and cold water lines, pressure relief valve, and ventilation components. Made necessary adjustments to eliminate the noise and ensure proper operation of the water heating system.
Boonville, IN 47601
Completed annual planned maintenance on 10-year-old HVAC system. Verified thermostat functionality and system settings, with particular attention to temperature control parameters. Confirmed equipment levelness using spirit level to ensure proper condensate drainage and optimal operation.
Completed annual planned maintenance on 10-year-old HVAC system. Verified thermostat functionality and system settings, with particular attention to temperature control parameters. Confirmed equipment levelness using spirit level to ensure proper condensate drainage and optimal operation.
Brent D.
Brent D. Checked in
Completed annual planned maintenance on 10-year-old HVAC system. Verified thermostat functionality and system settings, with particular attention to temperature control parameters. Confirmed equipment levelness using spirit level to ensure proper condensate drainage and optimal operation.
Boonville, IN 47601
Completed annual planned maintenance on 10-year HVAC system (installed 10/8/25). Performed comprehensive inspection of control board circuitry and verified proper level positioning of equipment. First visit of scheduled maintenance cycle; customer declined service renewal.
Completed annual planned maintenance on 10-year HVAC system (installed 10/8/25). Performed comprehensive inspection of control board circuitry and verified proper level positioning of equipment. First visit of scheduled maintenance cycle; customer declined service renewal.
Brent D.
Brent D. Checked in
Completed annual planned maintenance on 10-year HVAC system (installed 10/8/25). Performed comprehensive inspection of control board circuitry and verified proper level positioning of equipment. First visit of scheduled maintenance cycle; customer declined service renewal.
Boonville, IN 47601
Performed diagnostic assessment on unit in response to customer-reported whistling noise during fan operation. Inspected filter alignment as potential cause of issue. CO2 readings were normal. Identified worn blower wheel component that was creating noise during operation; part was removed for inspection. Replaced 20x20x5 and 16x25x5 filters and properly aligned them. System now operating normally with whistling noise eliminated.
Performed diagnostic assessment on unit in response to customer-reported whistling noise during fan operation. Inspected filter alignment as potential cause of issue. CO2 readings were normal. Identified worn blower wheel component that was creating noise during operation; part was removed for inspection. Replaced 20x20x5 and 16x25x5 filters and properly aligned them. System now operating normally with whistling noise eliminated.
Brock B.
Brock B. Checked in
Performed diagnostic assessment on unit in response to customer-reported whistling noise during fan operation. Inspected filter alignment as potential cause of issue. CO2 readings were normal. Identified worn blower wheel component that was creating noise during operation; part was removed for inspection. Replaced 20x20x5 and 16x25x5 filters and properly aligned them. System now operating normally with whistling noise eliminated.
Boonville, IN 47601
Boonville, IN - Investigated customer's reported HVAC system failure; inspection of blower motor assembly revealed proper connections with all wiring (yellow, red, green, blue, white, and orange) intact to various connection points. System components appear to be in normal working condition with no visible damage or deterioration; further diagnostic testing required to identify the non-visible issue causing system non-operation.
Cameron N.
Cameron N. Checked in
Investigated customer's reported HVAC system failure; inspection of blower motor assembly revealed proper connections with all wiring (yellow, red, green, blue, white, and orange) intact to various connection points. System components appear to be in normal working condition with no visible damage or deterioration; further diagnostic testing required to identify the non-visible issue causing system non-operation.
Boonville, IN 47601
Successfully completed full HVAC system installation, featuring a new Lennox air conditioning unit mounted on concrete pad with proper electrical connections and condensate drainage. Interior components include furnace system with PVC ventilation piping installed in utility room, completing the 3-ton system upgrade as specified in work order.
Successfully completed full HVAC system installation, featuring a new Lennox air conditioning unit mounted on concrete pad with proper electrical connections and condensate drainage. Interior components include furnace system with PVC ventilation piping installed in utility room, completing the 3-ton system upgrade as specified in work order.
Adam M.
Adam M. Checked in
Successfully completed full HVAC system installation, featuring a new Lennox air conditioning unit mounted on concrete pad with proper electrical connections and condensate drainage. Interior components include furnace system with PVC ventilation piping installed in utility room, completing the 3-ton system upgrade as specified in work order.
Boonville, IN 47601
Performed routine maintenance on two HVAC systems (11 and 16 years old) for Gold Level service customer. Conducted comprehensive diagnostic testing on both furnace units, inspected internal components including circuit boards, wiring connections, and mechanical parts. Replaced 16x25x5 filter and renewed service plan as scheduled for second annual maintenance visit.
Performed routine maintenance on two HVAC systems (11 and 16 years old) for Gold Level service customer. Conducted comprehensive diagnostic testing on both furnace units, inspected internal components including circuit boards, wiring connections, and mechanical parts. Replaced 16x25x5 filter and renewed service plan as scheduled for second annual maintenance visit.
Cameron N.
Cameron N. Checked in
Performed routine maintenance on two HVAC systems (11 and 16 years old) for Gold Level service customer. Conducted comprehensive diagnostic testing on both furnace units, inspected internal components including circuit boards, wiring connections, and mechanical parts. Replaced 16x25x5 filter and renewed service plan as scheduled for second annual maintenance visit.
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.