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 - Performed comprehensive inspection of 9-year-old HVAC system due to homeowner's concerns about high energy usage. Conducted thorough examination of attic insulation, noting condition and coverage of fiberglass batting between floor joists. System was operational during service call; recommended maintenance procedures to optimize efficiency and reduce utility costs.
Kevin H.
Kevin H. Checked in
Performed comprehensive inspection of 9-year-old HVAC system due to homeowner's concerns about high energy usage. Conducted thorough examination of attic insulation, noting condition and coverage of fiberglass batting between floor joists. System was operational during service call; recommended maintenance procedures to optimize efficiency and reduce utility costs.
Boonville, IN 47601
Completed annual planned maintenance on NSSU system with 20X20X5 filters. Performed level check on equipment and inspected control board circuitry and connections. System installed 9/12/25, first visit of annual maintenance cycle; customer declined renewal at this time.
Completed annual planned maintenance on NSSU system with 20X20X5 filters. Performed level check on equipment and inspected control board circuitry and connections. System installed 9/12/25, first visit of annual maintenance cycle; customer declined renewal at this time.
Jacob D.
Jacob D. Checked in
Completed annual planned maintenance on NSSU system with 20X20X5 filters. Performed level check on equipment and inspected control board circuitry and connections. System installed 9/12/25, first visit of annual maintenance cycle; customer declined renewal at this time.
Boonville, IN 47601
Conducted a comprehensive HVAC replacement estimate for an inoperative system. Inspection revealed an aging outdoor unit with significant debris accumulation around the base and examined the attic ductwork system which showed multiple flexible ducts requiring evaluation. Customer was unavailable until 3:30pm, limiting immediate consultation on replacement options.
Conducted a comprehensive HVAC replacement estimate for an inoperative system. Inspection revealed an aging outdoor unit with significant debris accumulation around the base and examined the attic ductwork system which showed multiple flexible ducts requiring evaluation. Customer was unavailable until 3:30pm, limiting immediate consultation on replacement options.
Nick B.
Nick B. Checked in
Conducted a comprehensive HVAC replacement estimate for an inoperative system. Inspection revealed an aging outdoor unit with significant debris accumulation around the base and examined the attic ductwork system which showed multiple flexible ducts requiring evaluation. Customer was unavailable until 3:30pm, limiting immediate consultation on replacement options.
Boonville, IN 47601
Performed routine Gold Level maintenance on two HVAC systems (both approximately 13 years old) during our 21st scheduled visit. Replaced filters (28x36x1 and 20x25x5) and documented significant frost/ice accumulation on evaporator coils and refrigerant lines in one unit. Recommended immediate follow-up service to address refrigerant flow issues and potential restriction in the system before component damage occurs.
Performed routine Gold Level maintenance on two HVAC systems (both approximately 13 years old) during our 21st scheduled visit. Replaced filters (28x36x1 and 20x25x5) and documented significant frost/ice accumulation on evaporator coils and refrigerant lines in one unit. Recommended immediate follow-up service to address refrigerant flow issues and potential restriction in the system before component damage occurs.
Shawn M.
Shawn M. Checked in
Performed routine Gold Level maintenance on two HVAC systems (both approximately 13 years old) during our 21st scheduled visit. Replaced filters (28x36x1 and 20x25x5) and documented significant frost/ice accumulation on evaporator coils and refrigerant lines in one unit. Recommended immediate follow-up service to address refrigerant flow issues and potential restriction in the system before component damage occurs.
Boonville, IN 47601
Performed Gold Level maintenance on 19-year-old HVAC system. Inspected evaporator coils showing signs of oxidation and minor corrosion at connection points, particularly at the brass valve fitting. Noted significant dust and debris accumulation in ductwork and on insulated pipes, recommending thorough cleaning before next scheduled maintenance in September 2025.
Performed Gold Level maintenance on 19-year-old HVAC system. Inspected evaporator coils showing signs of oxidation and minor corrosion at connection points, particularly at the brass valve fitting. Noted significant dust and debris accumulation in ductwork and on insulated pipes, recommending thorough cleaning before next scheduled maintenance in September 2025.
Cole C.
Cole C. Checked in
Performed Gold Level maintenance on 19-year-old HVAC system. Inspected evaporator coils showing signs of oxidation and minor corrosion at connection points, particularly at the brass valve fitting. Noted significant dust and debris accumulation in ductwork and on insulated pipes, recommending thorough cleaning before next scheduled maintenance in September 2025.
Boonville, IN 47601
Performed annual planned maintenance on Lennox HVAC system (installed 8/15/25). Checked system temperature readings (183°F recorded), inspected unit integrity, and replaced 16x25x5 filters. System functioning within normal parameters; customer advised that renewal is not required at this time.
Performed annual planned maintenance on Lennox HVAC system (installed 8/15/25). Checked system temperature readings (183°F recorded), inspected unit integrity, and replaced 16x25x5 filters. System functioning within normal parameters; customer advised that renewal is not required at this time.
Brent D.
Brent D. Checked in
Performed annual planned maintenance on Lennox HVAC system (installed 8/15/25). Checked system temperature readings (183°F recorded), inspected unit integrity, and replaced 16x25x5 filters. System functioning within normal parameters; customer advised that renewal is not required at this time.
Boonville, IN 47601
Boonville, IN - Performed platinum level maintenance on a 4-year-old HVAC system. Inspected and replaced the 20x25x4 MERV 10 media filter and 20x25x1 polarized filter. System is functioning properly with no issues detected.
Francis I.
Francis I. Checked in
Performed platinum level maintenance on a 4-year-old HVAC system. Inspected and replaced the 20x25x4 MERV 10 media filter and 20x25x1 polarized filter. System is functioning properly with no issues detected.
Boonville, IN 47601
Performed Platinum Level maintenance on an 8-year-old HVAC system. Inspected and replaced 20x20x5 filter during first annual visit. Examined electrical connections and refrigerant lines, noting debris accumulation under unit structure requiring cleanup for proper airflow and system efficiency.
Performed Platinum Level maintenance on an 8-year-old HVAC system. Inspected and replaced 20x20x5 filter during first annual visit. Examined electrical connections and refrigerant lines, noting debris accumulation under unit structure requiring cleanup for proper airflow and system efficiency.
Michael H.
Michael H. Checked in
Performed Platinum Level maintenance on an 8-year-old HVAC system. Inspected and replaced 20x20x5 filter during first annual visit. Examined electrical connections and refrigerant lines, noting debris accumulation under unit structure requiring cleanup for proper airflow and system efficiency.
Boonville, IN 47601
Performed warranty service call on a Lennox high-wall heat pump indoor unit (Model MMD63235-1P). Conducted leak search on the system and documented required replacement parts. System requires follow-up service with parts to complete the warranty repair.
Performed warranty service call on a Lennox high-wall heat pump indoor unit (Model MMD63235-1P). Conducted leak search on the system and documented required replacement parts. System requires follow-up service with parts to complete the warranty repair.
Cole C.
Cole C. Checked in
Performed warranty service call on a Lennox high-wall heat pump indoor unit (Model MMD63235-1P). Conducted leak search on the system and documented required replacement parts. System requires follow-up service with parts to complete the warranty repair.
Boonville, IN 47601
Successfully installed an Eemax tankless water heater unit within a wooden cabinet enclosure. Completed all necessary plumbing connections including PVC piping and brass valves, ensuring proper fitting and secure mounting. System was tested and confirmed to be functioning correctly with temperature controls properly calibrated.
Successfully installed an Eemax tankless water heater unit within a wooden cabinet enclosure. Completed all necessary plumbing connections including PVC piping and brass valves, ensuring proper fitting and secure mounting. System was tested and confirmed to be functioning correctly with temperature controls properly calibrated.
Isaac G.
Isaac G. Checked in
Successfully installed an Eemax tankless water heater unit within a wooden cabinet enclosure. Completed all necessary plumbing connections including PVC piping and brass valves, ensuring proper fitting and secure mounting. System was tested and confirmed to be functioning correctly with temperature controls properly calibrated.
Boonville, IN 47601
Conducted comprehensive inspection of residential plumbing system in crawlspace area, documenting PVC supply and drainage infrastructure. Identified aging pipes with accumulated grime and assessed structural supports connecting to floor joists. Estimate prepared for necessary repairs to maintain system integrity and prevent potential future failures.
Conducted comprehensive inspection of residential plumbing system in crawlspace area, documenting PVC supply and drainage infrastructure. Identified aging pipes with accumulated grime and assessed structural supports connecting to floor joists. Estimate prepared for necessary repairs to maintain system integrity and prevent potential future failures.
Kyle D.
Kyle D. Checked in
Conducted comprehensive inspection of residential plumbing system in crawlspace area, documenting PVC supply and drainage infrastructure. Identified aging pipes with accumulated grime and assessed structural supports connecting to floor joists. Estimate prepared for necessary repairs to maintain system integrity and prevent potential future failures.
Boonville, IN 47601
Successfully completed installation of a GREEN 17 SEER 97% efficiency complete HVAC system, including a high-efficiency furnace with PVC venting in the basement utility area and an outdoor condensing unit mounted on a concrete pad with proper electrical connections. All ductwork was properly installed and insulated, with the system fully tested and operational.
Successfully completed installation of a GREEN 17 SEER 97% efficiency complete HVAC system, including a high-efficiency furnace with PVC venting in the basement utility area and an outdoor condensing unit mounted on a concrete pad with proper electrical connections. All ductwork was properly installed and insulated, with the system fully tested and operational.
Drake H.
Drake H. Checked in
Successfully completed installation of a GREEN 17 SEER 97% efficiency complete HVAC system, including a high-efficiency furnace with PVC venting in the basement utility area and an outdoor condensing unit mounted on a concrete pad with proper electrical connections. All ductwork was properly installed and insulated, with the system fully tested and operational.
Boonville, IN 47601
Performed scheduled second annual maintenance visit on 7-year-old Gold Level HVAC system. Inspected electrical connections and wiring, noting proper terminations with no signs of overheating or loose connections. Examined and documented significant dust accumulation in ductwork that could restrict airflow; recommended professional duct cleaning service to improve system efficiency and indoor air quality. Replaced 16x25x5 air filter as part of routine maintenance protocol.
Performed scheduled second annual maintenance visit on 7-year-old Gold Level HVAC system. Inspected electrical connections and wiring, noting proper terminations with no signs of overheating or loose connections. Examined and documented significant dust accumulation in ductwork that could restrict airflow; recommended professional duct cleaning service to improve system efficiency and indoor air quality. Replaced 16x25x5 air filter as part of routine maintenance protocol.
Jeremiah H.
Jeremiah H. Checked in
Performed scheduled second annual maintenance visit on 7-year-old Gold Level HVAC system. Inspected electrical connections and wiring, noting proper terminations with no signs of overheating or loose connections. Examined and documented significant dust accumulation in ductwork that could restrict airflow; recommended professional duct cleaning service to improve system efficiency and indoor air quality. Replaced 16x25x5 air filter as part of routine maintenance protocol.
Boonville, IN 47601
Performed comprehensive assessment of existing HVAC system, including inspection of aging Trane Weathertron analog thermostat and outdoor unit showing significant weathering with visible rust formation. Provided customer with replacement options for complete system upgrade, recommending high-efficiency equipment to replace the deteriorated outdoor condensing unit and modernize outdated control interface.
Performed comprehensive assessment of existing HVAC system, including inspection of aging Trane Weathertron analog thermostat and outdoor unit showing significant weathering with visible rust formation. Provided customer with replacement options for complete system upgrade, recommending high-efficiency equipment to replace the deteriorated outdoor condensing unit and modernize outdated control interface.
Cole C.
Cole C. Checked in
Performed comprehensive assessment of existing HVAC system, including inspection of aging Trane Weathertron analog thermostat and outdoor unit showing significant weathering with visible rust formation. Provided customer with replacement options for complete system upgrade, recommending high-efficiency equipment to replace the deteriorated outdoor condensing unit and modernize outdated control interface.
Boonville, IN 47601
Responded to no-heat call for 15-year-old Lennox system (Model MNG32V5-125-1, Serial 5800B41474). Diagnosed faulty induction motor that was overheating and causing system shutdown; customer had correctly identified the issue as the motor was extremely hot to touch. Replaced motor and verified proper system operation with normal airflow through vents.
Responded to no-heat call for 15-year-old Lennox system (Model MNG32V5-125-1, Serial 5800B41474). Diagnosed faulty induction motor that was overheating and causing system shutdown; customer had correctly identified the issue as the motor was extremely hot to touch. Replaced motor and verified proper system operation with normal airflow through vents.
Cole C.
Cole C. Checked in
Responded to no-heat call for 15-year-old Lennox system (Model MNG32V5-125-1, Serial 5800B41474). Diagnosed faulty induction motor that was overheating and causing system shutdown; customer had correctly identified the issue as the motor was extremely hot to touch. Replaced motor and verified proper system operation with normal airflow through vents.
Boonville, IN 47601
Performed annual planned maintenance on HVAC system installed 9/5/25. Inspected electrical components including circuit board connections and terminal points (W1, W2, C). Verified system level and proper mounting of equipment. Replaced 16x25x5 filter as part of standard maintenance protocol. Documentation completed with supporting photographs of internal components and installation positioning.
Performed annual planned maintenance on HVAC system installed 9/5/25. Inspected electrical components including circuit board connections and terminal points (W1, W2, C). Verified system level and proper mounting of equipment. Replaced 16x25x5 filter as part of standard maintenance protocol. Documentation completed with supporting photographs of internal components and installation positioning.
Brent D.
Brent D. Checked in
Performed annual planned maintenance on HVAC system installed 9/5/25. Inspected electrical components including circuit board connections and terminal points (W1, W2, C). Verified system level and proper mounting of equipment. Replaced 16x25x5 filter as part of standard maintenance protocol. Documentation completed with supporting photographs of internal components and installation positioning.
Boonville, IN 47601
Completed scheduled 6-month maintenance service on mini-split system (1st visit-NSSU). Performed leveling check on ventilation registers and conducted temperature measurements with digital probe, confirming proper system operation at 29 degrees. All components inspected and functioning within normal parameters.
Completed scheduled 6-month maintenance service on mini-split system (1st visit-NSSU). Performed leveling check on ventilation registers and conducted temperature measurements with digital probe, confirming proper system operation at 29 degrees. All components inspected and functioning within normal parameters.
Brent D.
Brent D. Checked in
Completed scheduled 6-month maintenance service on mini-split system (1st visit-NSSU). Performed leveling check on ventilation registers and conducted temperature measurements with digital probe, confirming proper system operation at 29 degrees. All components inspected and functioning within normal parameters.
Boonville, IN 47601
Replaced faulty water shutoff valve in toilet tank that was continuously running. Installed complete new flush kit, addressing mineral buildup and sediment accumulation in the tank. All components now functioning properly with proper water level restored.
Replaced faulty water shutoff valve in toilet tank that was continuously running. Installed complete new flush kit, addressing mineral buildup and sediment accumulation in the tank. All components now functioning properly with proper water level restored.
Kyle D.
Kyle D. Checked in
Replaced faulty water shutoff valve in toilet tank that was continuously running. Installed complete new flush kit, addressing mineral buildup and sediment accumulation in the tank. All components now functioning properly with proper water level restored.
Boonville, IN 47601
Performed warranty replacement of existing tankless water heater. Installed new unit on exterior wall with proper PVC venting and electrical connections. Internal inspection of previous unit revealed significant corrosion and rust damage on the bottom surface around drain points, likely contributing to failure. All connections were tested and system is functioning properly with no leaks detected.
Performed warranty replacement of existing tankless water heater. Installed new unit on exterior wall with proper PVC venting and electrical connections. Internal inspection of previous unit revealed significant corrosion and rust damage on the bottom surface around drain points, likely contributing to failure. All connections were tested and system is functioning properly with no leaks detected.
Kyle D.
Kyle D. Checked in
Performed warranty replacement of existing tankless water heater. Installed new unit on exterior wall with proper PVC venting and electrical connections. Internal inspection of previous unit revealed significant corrosion and rust damage on the bottom surface around drain points, likely contributing to failure. All connections were tested and system is functioning properly with no leaks detected.
Boonville, IN 47601
Conducted an assessment of current HVAC system for potential replacement. Existing installation includes an older Trane XL 78 furnace positioned on concrete flooring in utility area with visible ductwork connections secured with metallic tape. System evaluation also included examination of adjacent water heater with pressure relief valve and associated plumbing connections. Photos documented the current equipment configuration and basement mechanical room layout for replacement planning purposes.
Conducted an assessment of current HVAC system for potential replacement. Existing installation includes an older Trane XL 78 furnace positioned on concrete flooring in utility area with visible ductwork connections secured with metallic tape. System evaluation also included examination of adjacent water heater with pressure relief valve and associated plumbing connections. Photos documented the current equipment configuration and basement mechanical room layout for replacement planning purposes.
Danny M.
Danny M. Checked in
Conducted an assessment of current HVAC system for potential replacement. Existing installation includes an older Trane XL 78 furnace positioned on concrete flooring in utility area with visible ductwork connections secured with metallic tape. System evaluation also included examination of adjacent water heater with pressure relief valve and associated plumbing connections. Photos documented the current equipment configuration and basement mechanical room layout for replacement planning purposes.
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.