HVAC In Newburgh | 24/7 Heating & Air Conditioning
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 & Air Conditioning Services in Newburgh, IN

The expert professionals at A+ Derr are ready to serve all of your HVAC system needs in Newburgh, IN. We are fourth-generation business owners and have been helping Newburgh-area families ensure quality air in their homes since 1975. A+ Derr provides free estimates on service calls and replacement services. We also have 24/7 emergency service and same-day service. Our commitment to excellence means we’re there for you, no matter when your HVAC system needs repair. Our 100% satisfaction guarantee means you can rest easy knowing you made a sound investment. Our motto is: “If you’re not happy with a product installed by us after the first year, we’ll buy it back.” If you need quality HVAC services in Newburgh, call the A+ Derr team at 833-232-4328 or contact us online!

Heating & Furnace Services in Newburgh, IN

Living in Newburgh means dealing with harsh winters. To make it through in comfort, you need a reliable heating system and a trustworthy HVAC team to service it. A+ Derr offers comprehensive heating and furnace services to Newburgh residents. You can count on us for:

Don’t wait until the cold weather season to check your heating system! Call 833-232-4328 to ensure your system will be ready when you need it most.

Air Conditioning Systems in Newburgh, IN

A working AC is a necessity when a Newburgh summer hits. If your air conditioner suddenly goes out, you don’t want to be left in the heat. If that happens, turn to the experts at A+ Derr. We can help with any of your cooling issues, whether you need routine maintenance or a complex repair. Our services include:

Don’t sweat it out this summer! Contact A+ Derr at 833-232-4328 for quality air conditioning services in Newburgh.

Indoor Air Quality for Newburgh, IN

The air quality in your home is essential, but it can be easy to overlook. Our homes are much more efficient than they used to be. They are designed to keep the air in to efficiently heat and cool homes. While that’s great for your energy bill, it can cause poor air quality, which can worsen allergy and asthma symptoms, along with other negative side effects. To ensure you have good indoor air quality, schedule a visit from one of our expert professionals. They’ll test your air and make recommendations based on your needs and budget to help keep quality air inside your home.

Should You Upgrade Your Newburgh, IN, HVAC System

Most quality HVAC systems last around 15 years with routine maintenance. As they age, all systems will begin to lose efficiency. It may be time to upgrade your HVAC system if:

  • The system is not blowing the correct air temperature
  • Some rooms are too hot or too cold
  • You hear strange noises coming from the system
  • Your system is more than 15 years old
  • Your HVAC system is noisy
  • Your HVAC system needs to be repaired more than once a year

If you think you may need an HVAC system upgrade, call the experts at A+ Derr at 833-232-4328! We provide free estimates on system replacements.

Benefits of HVAC System Maintenance

With an investment like an HVAC system, you want to ensure it works efficiently and effectively. To keep it running smoothly, consider scheduling routine maintenance. Routine maintenance on your HVAC system can help prevent breaks and improve overall performance, including:

  • Extending the life span of the system
  • Increases energy efficiency
  • Improves performance
  • Fewer breakdowns
  • Lower energy bills

At A+ Derr, we offer comprehensive maintenance to keep your system working to the best of its ability. During our routine maintenance appointments, we check:

  • Refrigerant levels
  • System components
  • Thermostat recalibration
  • Part lubrication
  • Possible leakages
  • Overall performance tests

If you’re ready to schedule a routine maintenance check with A+ Derr, call 833-232-4328 or contact us online.

Choose A+ Derr for Your Newburgh, IN, HVAC Needs

If you’re in the market for an HVAC system maintenance, repair, or even a complete upgrade, A+ Derr’s expert technicians are here to serve you. Our long-standing commitment to assisting customers in the Newburgh, IN, area to feel comfortable in their homes all year long means we can help you with your system needs. You can be confident in choosing A+ Derr because our 100% Satisfaction Guarantee means you know the job is not done until you’re satisfied.If you want A+ HVAC services, go with A+ Derr! Call 833-232-4328 or contact us online to schedule heating or air conditioning services in Newburgh.

Recent Jobs and Reviews in Newburgh, IN

Job Locations and Reviews

Completed first annual Platinum Level maintenance on a 2-year-old single-system HVAC unit. Performed comprehensive inspection of outdoor condensing unit and indoor air handler located in garage, replaced 20x25x5 filter, checked refrigerant levels, cleaned coils, verified electrical connections, and tested system operation to ensure optimal performance.
Completed first annual Platinum Level maintenance on a 2-year-old single-system HVAC unit. Performed comprehensive inspection of outdoor condensing unit and indoor air handler located in garage, replaced 20x25x5 filter, checked refrigerant levels, cleaned coils, verified electrical connections, and tested system operation to ensure optimal performance.
Jeff J.
Jeff J. Checked in
Completed first annual Platinum Level maintenance on a 2-year-old single-system HVAC unit. Performed comprehensive inspection of outdoor condensing unit and indoor air handler located in garage, replaced 20x25x5 filter, checked refrigerant levels, cleaned coils, verified electrical connections, and tested system operation to ensure optimal performance.
Newburgh, IN 47630
Newburgh, IN - Responded to no-cool service call on 10-month-old system with blank thermostat and no airflow. Upon inspection, diagnosed complete system power loss due to failed low-voltage transformer. Replaced defective transformer, restored 24V control circuit, verified thermostat communication and system startup, and confirmed proper airflow and cooling operation throughout all zones.
Francis I.
Francis I. Checked in
Responded to no-cool service call on 10-month-old system with blank thermostat and no airflow. Upon inspection, diagnosed complete system power loss due to failed low-voltage transformer. Replaced defective transformer, restored 24V control circuit, verified thermostat communication and system startup, and confirmed proper airflow and cooling operation throughout all zones.
Newburgh, IN 47630
Completed routine AC tune-up and preventive maintenance inspection. Verified system voltage readings at 243.9V using digital multimeter, inspected evaporator coil and filter assembly for cleanliness and proper airflow, and documented equipment condition through photos. No issues or deficiencies identified during inspection; system operating within normal parameters.
Completed routine AC tune-up and preventive maintenance inspection. Verified system voltage readings at 243.9V using digital multimeter, inspected evaporator coil and filter assembly for cleanliness and proper airflow, and documented equipment condition through photos. No issues or deficiencies identified during inspection; system operating within normal parameters.
Michael H.
Michael H. Checked in
Completed routine AC tune-up and preventive maintenance inspection. Verified system voltage readings at 243.9V using digital multimeter, inspected evaporator coil and filter assembly for cleanliness and proper airflow, and documented equipment condition through photos. No issues or deficiencies identified during inspection; system operating within normal parameters.
Newburgh, IN 47630
Completed comprehensive AC tune-up and preventative maintenance on residential air conditioning system. Performed standard inspection of outdoor condensing unit located on exterior concrete pad, verified indoor furnace/air handler connections and operation in mechanical room, and confirmed system is functioning properly with no deficiencies noted at time of service.
Completed comprehensive AC tune-up and preventative maintenance on residential air conditioning system. Performed standard inspection of outdoor condensing unit located on exterior concrete pad, verified indoor furnace/air handler connections and operation in mechanical room, and confirmed system is functioning properly with no deficiencies noted at time of service.
Michael H.
Michael H. Checked in
Completed comprehensive AC tune-up and preventative maintenance on residential air conditioning system. Performed standard inspection of outdoor condensing unit located on exterior concrete pad, verified indoor furnace/air handler connections and operation in mechanical room, and confirmed system is functioning properly with no deficiencies noted at time of service.
Newburgh, IN 47630
Conducted on-site assessment for water softener installation in mechanical room. Evaluated existing plumbing infrastructure, including water supply lines, drainage access, and available space near current water heater and HVAC equipment. Documented existing conditions showing aged flexible connectors, copper piping, and floor-level moisture concerns. Photographed installation area to determine optimal placement for new water softener unit, verify compatibility with current system configuration, and identify any necessary modifications to accommodate proper installation and future maintenance access.
Conducted on-site assessment for water softener installation in mechanical room. Evaluated existing plumbing infrastructure, including water supply lines, drainage access, and available space near current water heater and HVAC equipment. Documented existing conditions showing aged flexible connectors, copper piping, and floor-level moisture concerns. Photographed installation area to determine optimal placement for new water softener unit, verify compatibility with current system configuration, and identify any necessary modifications to accommodate proper installation and future maintenance access.
Kyle D.
Kyle D. Checked in
Conducted on-site assessment for water softener installation in mechanical room. Evaluated existing plumbing infrastructure, including water supply lines, drainage access, and available space near current water heater and HVAC equipment. Documented existing conditions showing aged flexible connectors, copper piping, and floor-level moisture concerns. Photographed installation area to determine optimal placement for new water softener unit, verify compatibility with current system configuration, and identify any necessary modifications to accommodate proper installation and future maintenance access.
Newburgh, IN 47630
Installed NPE-210A tankless water heater in basement utility room, mounting unit to wall and connecting with copper supply piping. Completed all necessary venting with PVC exhaust system, integrated electrical connections, and ensured proper clearances from existing HVAC equipment and water softener system. All installations performed to manufacturer specifications and local code requirements.
Installed NPE-210A tankless water heater in basement utility room, mounting unit to wall and connecting with copper supply piping. Completed all necessary venting with PVC exhaust system, integrated electrical connections, and ensured proper clearances from existing HVAC equipment and water softener system. All installations performed to manufacturer specifications and local code requirements.
Isaac G.
Isaac G. Checked in
Installed NPE-210A tankless water heater in basement utility room, mounting unit to wall and connecting with copper supply piping. Completed all necessary venting with PVC exhaust system, integrated electrical connections, and ensured proper clearances from existing HVAC equipment and water softener system. All installations performed to manufacturer specifications and local code requirements.
Newburgh, IN 47630
Newburgh, IN - Completed annual Platinum Level planned maintenance on a 10-year-old Bryant HVAC system. Performed comprehensive inspection of furnace and ductwork, changed air filter, verified proper operation of all system components, and documented equipment condition with photos. System is operating within normal parameters and ready for continued service.
Michael H.
Michael H. Checked in
Completed annual Platinum Level planned maintenance on a 10-year-old Bryant HVAC system. Performed comprehensive inspection of furnace and ductwork, changed air filter, verified proper operation of all system components, and documented equipment condition with photos. System is operating within normal parameters and ready for continued service.
Newburgh, IN 47630
Conducted comprehensive on-site evaluation for complete HVAC system replacement. Assessed existing Carrier furnace installation and associated ductwork configuration in residential garage utility closet, documented current equipment specifications and spatial constraints for new system design. Photographed exterior gas meter connections, electrical service panel locations, and interior mechanical room layout to determine optimal equipment sizing and installation requirements for Green - A+ rated replacement system.
Conducted comprehensive on-site evaluation for complete HVAC system replacement. Assessed existing Carrier furnace installation and associated ductwork configuration in residential garage utility closet, documented current equipment specifications and spatial constraints for new system design. Photographed exterior gas meter connections, electrical service panel locations, and interior mechanical room layout to determine optimal equipment sizing and installation requirements for Green - A+ rated replacement system.
Shawn M.
Shawn M. Checked in
Conducted comprehensive on-site evaluation for complete HVAC system replacement. Assessed existing Carrier furnace installation and associated ductwork configuration in residential garage utility closet, documented current equipment specifications and spatial constraints for new system design. Photographed exterior gas meter connections, electrical service panel locations, and interior mechanical room layout to determine optimal equipment sizing and installation requirements for Green - A+ rated replacement system.
Newburgh, IN 47630
Performed USA Bronze preventive maintenance service on Navien tankless water heater unit. Completed full system flush procedure to remove mineral buildup and scale deposits from heat exchanger, descaled internal components using appropriate cleaning solution, and verified proper operation of all valves and connections. Unit tested and confirmed operating within manufacturer specifications upon completion of maintenance service.
Performed USA Bronze preventive maintenance service on Navien tankless water heater unit. Completed full system flush procedure to remove mineral buildup and scale deposits from heat exchanger, descaled internal components using appropriate cleaning solution, and verified proper operation of all valves and connections. Unit tested and confirmed operating within manufacturer specifications upon completion of maintenance service.
Kyle D.
Kyle D. Checked in
Performed USA Bronze preventive maintenance service on Navien tankless water heater unit. Completed full system flush procedure to remove mineral buildup and scale deposits from heat exchanger, descaled internal components using appropriate cleaning solution, and verified proper operation of all valves and connections. Unit tested and confirmed operating within manufacturer specifications upon completion of maintenance service.
Newburgh, IN 47630
Completed annual platinum-level preventive maintenance on single-system HVAC unit with 16x25x5 filter media. Performed comprehensive inspection of air conditioning and furnace components, verified proper operation of Lennox S40 smart thermostat with Wi-Fi connectivity confirmed to home network, and reviewed system configuration settings including cooling airflow parameters across multiple CFM ranges (1800, 820, 450, 340 CFM) for high, medium, and low normal cooling operations. All equipment settings documented and system operating within manufacturer specifications.
Completed annual platinum-level preventive maintenance on single-system HVAC unit with 16x25x5 filter media. Performed comprehensive inspection of air conditioning and furnace components, verified proper operation of Lennox S40 smart thermostat with Wi-Fi connectivity confirmed to home network, and reviewed system configuration settings including cooling airflow parameters across multiple CFM ranges (1800, 820, 450, 340 CFM) for high, medium, and low normal cooling operations. All equipment settings documented and system operating within manufacturer specifications.
Brent D.
Brent D. Checked in
Completed annual platinum-level preventive maintenance on single-system HVAC unit with 16x25x5 filter media. Performed comprehensive inspection of air conditioning and furnace components, verified proper operation of Lennox S40 smart thermostat with Wi-Fi connectivity confirmed to home network, and reviewed system configuration settings including cooling airflow parameters across multiple CFM ranges (1800, 820, 450, 340 CFM) for high, medium, and low normal cooling operations. All equipment settings documented and system operating within manufacturer specifications.
Newburgh, IN 47630
Completed Gold Level planned maintenance visit on single-system residential HVAC unit. Performed comprehensive inspection of furnace components including blower motor assembly, gas valve connections, burner chamber, and all electrical wiring throughout the system. Verified proper operation of all controls, checked refrigerant lines, and documented unit specifications from manufacturer data plate (Model 2620X14540). All components found operating within normal parameters, and unit interior and exterior photographed for service records.
Completed Gold Level planned maintenance visit on single-system residential HVAC unit. Performed comprehensive inspection of furnace components including blower motor assembly, gas valve connections, burner chamber, and all electrical wiring throughout the system. Verified proper operation of all controls, checked refrigerant lines, and documented unit specifications from manufacturer data plate (Model 2620X14540). All components found operating within normal parameters, and unit interior and exterior photographed for service records.
Christian C.
Christian C. Checked in
Completed Gold Level planned maintenance visit on single-system residential HVAC unit. Performed comprehensive inspection of furnace components including blower motor assembly, gas valve connections, burner chamber, and all electrical wiring throughout the system. Verified proper operation of all controls, checked refrigerant lines, and documented unit specifications from manufacturer data plate (Model 2620X14540). All components found operating within normal parameters, and unit interior and exterior photographed for service records.
Newburgh, IN 47630
Completed comprehensive planned maintenance on dual HVAC system for Gold Level service agreement. Performed full system diagnostics on both 6-year-old units including electrical testing with clamp meter to verify amperage draw and system performance. Measured supply and return air temperatures to confirm proper temperature differential and system efficiency. Replaced 20x20x5 pleated filters on both systems per maintenance schedule. All equipment operating within manufacturer specifications with no deficiencies noted.
Completed comprehensive planned maintenance on dual HVAC system for Gold Level service agreement. Performed full system diagnostics on both 6-year-old units including electrical testing with clamp meter to verify amperage draw and system performance. Measured supply and return air temperatures to confirm proper temperature differential and system efficiency. Replaced 20x20x5 pleated filters on both systems per maintenance schedule. All equipment operating within manufacturer specifications with no deficiencies noted.
Michael H.
Michael H. Checked in
Completed comprehensive planned maintenance on dual HVAC system for Gold Level service agreement. Performed full system diagnostics on both 6-year-old units including electrical testing with clamp meter to verify amperage draw and system performance. Measured supply and return air temperatures to confirm proper temperature differential and system efficiency. Replaced 20x20x5 pleated filters on both systems per maintenance schedule. All equipment operating within manufacturer specifications with no deficiencies noted.
Newburgh, IN 47630
Responded to no-cool complaint on 5-year-old system in commercial facility where water sensor had activated and unit was not maintaining thermostat setpoint. Diagnosed system and identified TXV valve showing signs of age and potential refrigerant flow restriction based on visual inspection of component and operational parameters. Performed maintenance inspection on secondary HVAC system to ensure both units were operating efficiently, documented findings with photographic evidence of affected components and overall system configuration for warranty processing and follow-up repair scheduling.
Responded to no-cool complaint on 5-year-old system in commercial facility where water sensor had activated and unit was not maintaining thermostat setpoint. Diagnosed system and identified TXV valve showing signs of age and potential refrigerant flow restriction based on visual inspection of component and operational parameters. Performed maintenance inspection on secondary HVAC system to ensure both units were operating efficiently, documented findings with photographic evidence of affected components and overall system configuration for warranty processing and follow-up repair scheduling.
Cameron N.
Cameron N. Checked in
Responded to no-cool complaint on 5-year-old system in commercial facility where water sensor had activated and unit was not maintaining thermostat setpoint. Diagnosed system and identified TXV valve showing signs of age and potential refrigerant flow restriction based on visual inspection of component and operational parameters. Performed maintenance inspection on secondary HVAC system to ensure both units were operating efficiently, documented findings with photographic evidence of affected components and overall system configuration for warranty processing and follow-up repair scheduling.
Newburgh, IN 47630
Newburgh, IN - Responded to no-cool call on residential air conditioning system less than 10 years old experiencing hard starting and failure to engage. Upon arrival, performed diagnostic evaluation of outdoor condenser unit and electrical components. Identified starting issue, tested capacitor and contactor functionality, and verified proper voltage at disconnect. System restored to normal operation with unit cycling properly and delivering adequate cooling.
Shawn M.
Shawn M. Checked in
Responded to no-cool call on residential air conditioning system less than 10 years old experiencing hard starting and failure to engage. Upon arrival, performed diagnostic evaluation of outdoor condenser unit and electrical components. Identified starting issue, tested capacitor and contactor functionality, and verified proper voltage at disconnect. System restored to normal operation with unit cycling properly and delivering adequate cooling.
Newburgh, IN 47630
Newburgh, IN - Completed follow-up site visit for electrical transfer switch installation. Verified proper installation and operation of Generac transfer switch system, confirmed all electrical connections are secure and code-compliant, and documented final equipment configuration including meter enclosure, disconnect boxes, conduit runs, and associated electrical components mounted on exterior wall.
Collin D.
Collin D. Checked in
Completed follow-up site visit for electrical transfer switch installation. Verified proper installation and operation of Generac transfer switch system, confirmed all electrical connections are secure and code-compliant, and documented final equipment configuration including meter enclosure, disconnect boxes, conduit runs, and associated electrical components mounted on exterior wall.
Newburgh, IN 47630
Completed installation of a 2-ton, 19 SEER Lennox heat pump system with matching air handler. System was properly mounted on concrete pad with gravel landscaping, refrigerant lines installed and insulated, electrical disconnect wired, and unit evacuated and charged to manufacturer specifications as verified with digital manifold gauges.
Completed installation of a 2-ton, 19 SEER Lennox heat pump system with matching air handler. System was properly mounted on concrete pad with gravel landscaping, refrigerant lines installed and insulated, electrical disconnect wired, and unit evacuated and charged to manufacturer specifications as verified with digital manifold gauges.
Ian H.
Ian H. Checked in
Completed installation of a 2-ton, 19 SEER Lennox heat pump system with matching air handler. System was properly mounted on concrete pad with gravel landscaping, refrigerant lines installed and insulated, electrical disconnect wired, and unit evacuated and charged to manufacturer specifications as verified with digital manifold gauges.
Newburgh, IN 47630
Completed Platinum Level planned maintenance on dual HVAC systems (ages 6 and 9 years). Replaced two 20x25x5 filters, performed comprehensive system inspections including temperature differential measurements, verified refrigerant line integrity, and inspected evaporator coil assemblies and condensate drain operation on both units. All systems operating within normal parameters upon completion.
Completed Platinum Level planned maintenance on dual HVAC systems (ages 6 and 9 years). Replaced two 20x25x5 filters, performed comprehensive system inspections including temperature differential measurements, verified refrigerant line integrity, and inspected evaporator coil assemblies and condensate drain operation on both units. All systems operating within normal parameters upon completion.
Michael H.
Michael H. Checked in
Completed Platinum Level planned maintenance on dual HVAC systems (ages 6 and 9 years). Replaced two 20x25x5 filters, performed comprehensive system inspections including temperature differential measurements, verified refrigerant line integrity, and inspected evaporator coil assemblies and condensate drain operation on both units. All systems operating within normal parameters upon completion.
Newburgh, IN 47630
Completed installation of two toilets as part of a buy-one-get-one promotion. Both units were properly installed with new water supply connections, shut-off valves, and wax ring seals to ensure leak-free operation. All fixtures were tested and confirmed functioning correctly upon completion.
Completed installation of two toilets as part of a buy-one-get-one promotion. Both units were properly installed with new water supply connections, shut-off valves, and wax ring seals to ensure leak-free operation. All fixtures were tested and confirmed functioning correctly upon completion.
Isaac G.
Isaac G. Checked in
Completed installation of two toilets as part of a buy-one-get-one promotion. Both units were properly installed with new water supply connections, shut-off valves, and wax ring seals to ensure leak-free operation. All fixtures were tested and confirmed functioning correctly upon completion.
Newburgh, IN 47630
Replaced fan motor hub on rooftop HVAC unit in commercial mechanical room. Customer availability delayed start time to 10am, allowing for part installation and system testing to ensure proper airflow and unit operation upon completion.
Replaced fan motor hub on rooftop HVAC unit in commercial mechanical room. Customer availability delayed start time to 10am, allowing for part installation and system testing to ensure proper airflow and unit operation upon completion.
Shawn M.
Shawn M. Checked in
Replaced fan motor hub on rooftop HVAC unit in commercial mechanical room. Customer availability delayed start time to 10am, allowing for part installation and system testing to ensure proper airflow and unit operation upon completion.
Newburgh, IN 47630
Completed comprehensive AC tune-up on 5-year-old residential air conditioning system. Performed routine maintenance including inspection of outdoor condenser unit electrical components, capacitor, contactors, relays, and control boards; verified proper wiring connections and component functionality. Inspected indoor air handler unit, ductwork insulation, and associated HVAC system components to ensure optimal operation. All systems tested and confirmed working properly with no deficiencies noted.
Completed comprehensive AC tune-up on 5-year-old residential air conditioning system. Performed routine maintenance including inspection of outdoor condenser unit electrical components, capacitor, contactors, relays, and control boards; verified proper wiring connections and component functionality. Inspected indoor air handler unit, ductwork insulation, and associated HVAC system components to ensure optimal operation. All systems tested and confirmed working properly with no deficiencies noted.
Christian C.
Christian C. Checked in
Completed comprehensive AC tune-up on 5-year-old residential air conditioning system. Performed routine maintenance including inspection of outdoor condenser unit electrical components, capacitor, contactors, relays, and control boards; verified proper wiring connections and component functionality. Inspected indoor air handler unit, ductwork insulation, and associated HVAC system components to ensure optimal operation. All systems tested and confirmed working properly with no deficiencies noted.
Newburgh, IN 47630
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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.