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 - Completed annual second visit Platinum Level maintenance on 2-year-old HVAC system. Performed comprehensive inspection of outdoor condenser unit, replaced 16x25x5 air filter, checked refrigerant levels, tested electrical connections, and verified proper system operation. Unit exterior showed normal weathering for age; all mechanical components functioning within manufacturer specifications.
Michael H.
Michael H. Checked in
Completed annual second visit Platinum Level maintenance on 2-year-old HVAC system. Performed comprehensive inspection of outdoor condenser unit, replaced 16x25x5 air filter, checked refrigerant levels, tested electrical connections, and verified proper system operation. Unit exterior showed normal weathering for age; all mechanical components functioning within manufacturer specifications.
Boonville, IN 47601
Responded to no-cool call on 4-year-old residential HVAC system with thermostat set to 72°F but indoor temperature at 82°F. Upon arrival, confirmed no airflow from vents and system not operational. Accessed attic-mounted air handler to perform diagnostic evaluation. Identified failed thermostat preventing system communication and operation. Replaced malfunctioning thermostat with compatible unit, restored proper wiring connections, and verified system startup. Confirmed adequate airflow through supply registers, proper blower motor operation, and cooling cycle initiation. System restored to full operational status with temperature differential normalizing.
Responded to no-cool call on 4-year-old residential HVAC system with thermostat set to 72°F but indoor temperature at 82°F. Upon arrival, confirmed no airflow from vents and system not operational. Accessed attic-mounted air handler to perform diagnostic evaluation. Identified failed thermostat preventing system communication and operation. Replaced malfunctioning thermostat with compatible unit, restored proper wiring connections, and verified system startup. Confirmed adequate airflow through supply registers, proper blower motor operation, and cooling cycle initiation. System restored to full operational status with temperature differential normalizing.
Craig U.
Craig U. Checked in
Responded to no-cool call on 4-year-old residential HVAC system with thermostat set to 72°F but indoor temperature at 82°F. Upon arrival, confirmed no airflow from vents and system not operational. Accessed attic-mounted air handler to perform diagnostic evaluation. Identified failed thermostat preventing system communication and operation. Replaced malfunctioning thermostat with compatible unit, restored proper wiring connections, and verified system startup. Confirmed adequate airflow through supply registers, proper blower motor operation, and cooling cycle initiation. System restored to full operational status with temperature differential normalizing.
Boonville, IN 47601
Completed second annual Platinum Level planned maintenance on dual HVAC system with 4-year-old units utilizing 20x25x5 and 16x25x5 filters. Performed comprehensive inspection of both systems, including evaporator coil assemblies, electrical connections, and refrigerant lines. Documented significant copper coil oxidation and corrosion throughout both evaporator sections, with heavy discoloration concentrated on lower coil portions indicating prolonged moisture exposure. Inspected all electrical wiring, thermostat connections, and control components for proper operation. Verified integrity of refrigerant lines, connection ports, and service valves. Noted extensive rust formation on metal coil elements and surrounding components, suggesting ongoing condensation issues requiring monitoring. Checked condensate drainage system and mounting brackets for structural integrity. All functional components including motors, capacitors, and connection fittings remain operational despite visible age-
Completed second annual Platinum Level planned maintenance on dual HVAC system with 4-year-old units utilizing 20x25x5 and 16x25x5 filters. Performed comprehensive inspection of both systems, including evaporator coil assemblies, electrical connections, and refrigerant lines. Documented significant copper coil oxidation and corrosion throughout both evaporator sections, with heavy discoloration concentrated on lower coil portions indicating prolonged moisture exposure. Inspected all electrical wiring, thermostat connections, and control components for proper operation. Verified integrity of refrigerant lines, connection ports, and service valves. Noted extensive rust formation on metal coil elements and surrounding components, suggesting ongoing condensation issues requiring monitoring. Checked condensate drainage system and mounting brackets for structural integrity. All functional components including motors, capacitors, and connection fittings remain operational despite visible age-
Michael H.
Michael H. Checked in
Completed second annual Platinum Level planned maintenance on dual HVAC system with 4-year-old units utilizing 20x25x5 and 16x25x5 filters. Performed comprehensive inspection of both systems, including evaporator coil assemblies, electrical connections, and refrigerant lines. Documented significant copper coil oxidation and corrosion throughout both evaporator sections, with heavy discoloration concentrated on lower coil portions indicating prolonged moisture exposure. Inspected all electrical wiring, thermostat connections, and control components for proper operation. Verified integrity of refrigerant lines, connection ports, and service valves. Noted extensive rust formation on metal coil elements and surrounding components, suggesting ongoing condensation issues requiring monitoring. Checked condensate drainage system and mounting brackets for structural integrity. All functional components including motors, capacitors, and connection fittings remain operational despite visible age-
Boonville, IN 47601
Responded to customer concern regarding debris discharge from bathroom exhaust fan following recent HVAC system installation. Customer reported insulation-like material expelling from bathroom vent when door closed, creating pressure differential. Conducted on-site inspection of bathroom exhaust fan and related ductwork. Examined ceiling-mounted ventilation components and documented conditions with photographs. Inspection revealed accessible mechanical components through ceiling opening, with floor register and exhaust fan assembly visible. Assessed air pressure dynamics between conditioned space and bathroom environment to identify source of material discharge and pressure imbalance issues related to new system operation.
Responded to customer concern regarding debris discharge from bathroom exhaust fan following recent HVAC system installation. Customer reported insulation-like material expelling from bathroom vent when door closed, creating pressure differential. Conducted on-site inspection of bathroom exhaust fan and related ductwork. Examined ceiling-mounted ventilation components and documented conditions with photographs. Inspection revealed accessible mechanical components through ceiling opening, with floor register and exhaust fan assembly visible. Assessed air pressure dynamics between conditioned space and bathroom environment to identify source of material discharge and pressure imbalance issues related to new system operation.
Tyler C.
Tyler C. Checked in
Responded to customer concern regarding debris discharge from bathroom exhaust fan following recent HVAC system installation. Customer reported insulation-like material expelling from bathroom vent when door closed, creating pressure differential. Conducted on-site inspection of bathroom exhaust fan and related ductwork. Examined ceiling-mounted ventilation components and documented conditions with photographs. Inspection revealed accessible mechanical components through ceiling opening, with floor register and exhaust fan assembly visible. Assessed air pressure dynamics between conditioned space and bathroom environment to identify source of material discharge and pressure imbalance issues related to new system operation.
Boonville, IN 47601
Responded to water leak complaint on 2-year-old Lennox HVAC system located in garage. Upon inspection, identified failed drain pan with active leak from back left corner causing water pooling beneath unit. Leak had been occurring for approximately one week, initially appearing as minor condensation before progressing to significant water accumulation. Confirmed no structural damage to surrounding area. Replaced defective drain pan and verified proper drainage operation. Additionally installed iWave air purification system and UVC bulb assembly per homeowner request to enhance indoor air quality. Provided estimate for iWave and UVC installation on secondary downstairs system. All work completed successfully with system restored to full operational status.
Responded to water leak complaint on 2-year-old Lennox HVAC system located in garage. Upon inspection, identified failed drain pan with active leak from back left corner causing water pooling beneath unit. Leak had been occurring for approximately one week, initially appearing as minor condensation before progressing to significant water accumulation. Confirmed no structural damage to surrounding area. Replaced defective drain pan and verified proper drainage operation. Additionally installed iWave air purification system and UVC bulb assembly per homeowner request to enhance indoor air quality. Provided estimate for iWave and UVC installation on secondary downstairs system. All work completed successfully with system restored to full operational status.
Craig U.
Craig U. Checked in
Responded to water leak complaint on 2-year-old Lennox HVAC system located in garage. Upon inspection, identified failed drain pan with active leak from back left corner causing water pooling beneath unit. Leak had been occurring for approximately one week, initially appearing as minor condensation before progressing to significant water accumulation. Confirmed no structural damage to surrounding area. Replaced defective drain pan and verified proper drainage operation. Additionally installed iWave air purification system and UVC bulb assembly per homeowner request to enhance indoor air quality. Provided estimate for iWave and UVC installation on secondary downstairs system. All work completed successfully with system restored to full operational status.
Boonville, IN 47601
Boonville, IN - # HVAC Estimate - Replacement - Green - A+

Conducted comprehensive site assessment for complete HVAC system replacement. Documented existing equipment configuration and installation requirements through photographic documentation. Prepared detailed estimate for high-efficiency system upgrade with energy-efficient specifications meeting A+ performance standards.
Danny M.
Danny M. Checked in
# HVAC Estimate - Replacement - Green - A+ Conducted comprehensive site assessment for complete HVAC system replacement. Documented existing equipment configuration and installation requirements through photographic documentation. Prepared detailed estimate for high-efficiency system upgrade with energy-efficient specifications meeting A+ performance standards.
Boonville, IN 47601
Responded to no cooling complaint on 30+ year old residential air conditioning system. Upon arrival, confirmed unit was operational but producing only warm air with reduced airflow through vents. Conducted comprehensive system diagnostic on outdoor condenser unit and indoor air handler. Evaluated compressor operation, refrigerant levels, and airflow characteristics. Performed load calculations showing heating requirement of 40,580 BTUh with 527 CFM airflow and cooling requirement of 26,486 BTUh with 993 CFM airflow. Given the system's age of approximately three decades and current performance issues, documented findings and provided assessment of equipment condition and replacement recommendations to restore proper cooling function.
Responded to no cooling complaint on 30+ year old residential air conditioning system. Upon arrival, confirmed unit was operational but producing only warm air with reduced airflow through vents. Conducted comprehensive system diagnostic on outdoor condenser unit and indoor air handler. Evaluated compressor operation, refrigerant levels, and airflow characteristics. Performed load calculations showing heating requirement of 40,580 BTUh with 527 CFM airflow and cooling requirement of 26,486 BTUh with 993 CFM airflow. Given the system's age of approximately three decades and current performance issues, documented findings and provided assessment of equipment condition and replacement recommendations to restore proper cooling function.
Danny M.
Danny M. Checked in
Responded to no cooling complaint on 30+ year old residential air conditioning system. Upon arrival, confirmed unit was operational but producing only warm air with reduced airflow through vents. Conducted comprehensive system diagnostic on outdoor condenser unit and indoor air handler. Evaluated compressor operation, refrigerant levels, and airflow characteristics. Performed load calculations showing heating requirement of 40,580 BTUh with 527 CFM airflow and cooling requirement of 26,486 BTUh with 993 CFM airflow. Given the system's age of approximately three decades and current performance issues, documented findings and provided assessment of equipment condition and replacement recommendations to restore proper cooling function.
Boonville, IN 47601
Completed comprehensive Platinum Level maintenance on 6-year-old Bryant HVAC system including furnace and outdoor condensing unit. Performed full system inspection, replaced 25x25x4 air filter, cleaned condenser coils, verified refrigerant levels, tested all electrical connections and capacitors, inspected ductwork and PVC venting, confirmed proper airflow and system operation, and documented equipment condition with photos for customer records.
Completed comprehensive Platinum Level maintenance on 6-year-old Bryant HVAC system including furnace and outdoor condensing unit. Performed full system inspection, replaced 25x25x4 air filter, cleaned condenser coils, verified refrigerant levels, tested all electrical connections and capacitors, inspected ductwork and PVC venting, confirmed proper airflow and system operation, and documented equipment condition with photos for customer records.
Justin M.
Justin M. Checked in
Completed comprehensive Platinum Level maintenance on 6-year-old Bryant HVAC system including furnace and outdoor condensing unit. Performed full system inspection, replaced 25x25x4 air filter, cleaned condenser coils, verified refrigerant levels, tested all electrical connections and capacitors, inspected ductwork and PVC venting, confirmed proper airflow and system operation, and documented equipment condition with photos for customer records.
Boonville, IN 47601
Completed scheduled AC tune-up and preventative maintenance on residential air conditioning system. Performed comprehensive inspection of outdoor condenser unit and indoor components, tested system operation, verified proper refrigerant levels, cleaned coils, and confirmed all mechanical and electrical functions operating within manufacturer specifications. No deficiencies identified; system running efficiently with maintenance completed as scheduled.
Completed scheduled AC tune-up and preventative maintenance on residential air conditioning system. Performed comprehensive inspection of outdoor condenser unit and indoor components, tested system operation, verified proper refrigerant levels, cleaned coils, and confirmed all mechanical and electrical functions operating within manufacturer specifications. No deficiencies identified; system running efficiently with maintenance completed as scheduled.
Jeremiah H.
Jeremiah H. Checked in
Completed scheduled AC tune-up and preventative maintenance on residential air conditioning system. Performed comprehensive inspection of outdoor condenser unit and indoor components, tested system operation, verified proper refrigerant levels, cleaned coils, and confirmed all mechanical and electrical functions operating within manufacturer specifications. No deficiencies identified; system running efficiently with maintenance completed as scheduled.
Boonville, IN 47601
Completed planned maintenance visit on a 12-year-old single HVAC system. Inspected indoor furnace unit and outdoor condensing unit, documenting equipment condition through comprehensive photography. Examined electrical components including contactor, dual capacitors, and control board in outdoor unit, noting all wiring connections and component status. Verified 20x25x5 filter accessibility and system operational readiness.
Completed planned maintenance visit on a 12-year-old single HVAC system. Inspected indoor furnace unit and outdoor condensing unit, documenting equipment condition through comprehensive photography. Examined electrical components including contactor, dual capacitors, and control board in outdoor unit, noting all wiring connections and component status. Verified 20x25x5 filter accessibility and system operational readiness.
Christian C.
Christian C. Checked in
Completed planned maintenance visit on a 12-year-old single HVAC system. Inspected indoor furnace unit and outdoor condensing unit, documenting equipment condition through comprehensive photography. Examined electrical components including contactor, dual capacitors, and control board in outdoor unit, noting all wiring connections and component status. Verified 20x25x5 filter accessibility and system operational readiness.
Boonville, IN 47601
Replaced failed attic ventilation fan motor between ceiling joists, restoring proper attic exhaust function. Work was completed as part of previously approved HVAC system upgrade scope, with all electrical connections properly secured and tested for operation.
Replaced failed attic ventilation fan motor between ceiling joists, restoring proper attic exhaust function. Work was completed as part of previously approved HVAC system upgrade scope, with all electrical connections properly secured and tested for operation.
Brody J.
Brody J. Checked in
Replaced failed attic ventilation fan motor between ceiling joists, restoring proper attic exhaust function. Work was completed as part of previously approved HVAC system upgrade scope, with all electrical connections properly secured and tested for operation.
Boonville, IN 47601
Responded to customer concern regarding inaudible sump pump operation. Performed on-site inspection of sump pump system, accessing crawl space to evaluate pump assembly, float mechanism, and associated components. Documented existing conditions showing significant corrosion on pump housing and mechanical components, with pump basin exhibiting heavy weathering and deterioration. Verified float operation and assessed overall system functionality to determine if pump was operating within normal parameters.
Responded to customer concern regarding inaudible sump pump operation. Performed on-site inspection of sump pump system, accessing crawl space to evaluate pump assembly, float mechanism, and associated components. Documented existing conditions showing significant corrosion on pump housing and mechanical components, with pump basin exhibiting heavy weathering and deterioration. Verified float operation and assessed overall system functionality to determine if pump was operating within normal parameters.
Mike P.
Mike P. Checked in
Responded to customer concern regarding inaudible sump pump operation. Performed on-site inspection of sump pump system, accessing crawl space to evaluate pump assembly, float mechanism, and associated components. Documented existing conditions showing significant corrosion on pump housing and mechanical components, with pump basin exhibiting heavy weathering and deterioration. Verified float operation and assessed overall system functionality to determine if pump was operating within normal parameters.
Boonville, IN 47601
Boonville, IN - Responded to work order for non-functioning sump pump receptacle. Troubleshot electrical circuit serving basement sump pump outlet and identified fault in the receptacle. Replaced defective receptacle, verified proper grounding, tested circuit operation, and confirmed sump pump restored to full functionality.
Steven W.
Steven W. Checked in
Responded to work order for non-functioning sump pump receptacle. Troubleshot electrical circuit serving basement sump pump outlet and identified fault in the receptacle. Replaced defective receptacle, verified proper grounding, tested circuit operation, and confirmed sump pump restored to full functionality.
Boonville, IN 47601
Boonville, IN - Responded to no cooling complaint on 6-year-old residential air conditioning system with thermostat set at 72°F but indoor temperature reading 79°F. Upon arrival, confirmed airflow present at registers but no cold air delivery and no ice formation on evaporator coil. Performed complete system diagnostics on outdoor condenser unit located on exterior brick wall with gravel pad base. Identified and resolved refrigerant system issue restoring proper cooling operation. Verified proper airflow, temperature split, and system pressures upon completion with unit cycling normally and delivering cold air to occupied space.
Danny M.
Danny M. Checked in
Responded to no cooling complaint on 6-year-old residential air conditioning system with thermostat set at 72°F but indoor temperature reading 79°F. Upon arrival, confirmed airflow present at registers but no cold air delivery and no ice formation on evaporator coil. Performed complete system diagnostics on outdoor condenser unit located on exterior brick wall with gravel pad base. Identified and resolved refrigerant system issue restoring proper cooling operation. Verified proper airflow, temperature split, and system pressures upon completion with unit cycling normally and delivering cold air to occupied space.
Boonville, IN 47601
Completed monthly Platinum Level preventive maintenance service on single HVAC system, including filter inspection and replacement. Verified thermostat operation showing proper cooling mode functionality with accurate temperature display and control settings. System operating within normal parameters with no immediate service concerns identified.
Completed monthly Platinum Level preventive maintenance service on single HVAC system, including filter inspection and replacement. Verified thermostat operation showing proper cooling mode functionality with accurate temperature display and control settings. System operating within normal parameters with no immediate service concerns identified.
Jeremiah H.
Jeremiah H. Checked in
Completed monthly Platinum Level preventive maintenance service on single HVAC system, including filter inspection and replacement. Verified thermostat operation showing proper cooling mode functionality with accurate temperature display and control settings. System operating within normal parameters with no immediate service concerns identified.
Boonville, IN 47601
Responded to no cooling complaint on 6-7 year old residential HVAC system with inadequate airflow and indoor temperature reaching 77°F. Performed diagnostic evaluation of both indoor air handler unit and outdoor condensing unit. Identified system deficiency preventing proper cooling operation. Utilized recovery equipment and vacuum pump to service refrigerant circuit. Restored system to proper operating condition with adequate airflow and cooling capacity to maintain thermostat setpoint.
Responded to no cooling complaint on 6-7 year old residential HVAC system with inadequate airflow and indoor temperature reaching 77°F. Performed diagnostic evaluation of both indoor air handler unit and outdoor condensing unit. Identified system deficiency preventing proper cooling operation. Utilized recovery equipment and vacuum pump to service refrigerant circuit. Restored system to proper operating condition with adequate airflow and cooling capacity to maintain thermostat setpoint.
Danny M.
Danny M. Checked in
Responded to no cooling complaint on 6-7 year old residential HVAC system with inadequate airflow and indoor temperature reaching 77°F. Performed diagnostic evaluation of both indoor air handler unit and outdoor condensing unit. Identified system deficiency preventing proper cooling operation. Utilized recovery equipment and vacuum pump to service refrigerant circuit. Restored system to proper operating condition with adequate airflow and cooling capacity to maintain thermostat setpoint.
Boonville, IN 47601
Completed full HVAC system replacement installing a 3-ton Lennox 15.5 SEER heat pump with matching air handler. Positioned outdoor condensing unit on concrete pad against building exterior with proper clearances, ran refrigerant linesets along exterior wall with secure mounting brackets, and installed electrical disconnect box per code requirements. System commissioned and tested for proper operation.
Completed full HVAC system replacement installing a 3-ton Lennox 15.5 SEER heat pump with matching air handler. Positioned outdoor condensing unit on concrete pad against building exterior with proper clearances, ran refrigerant linesets along exterior wall with secure mounting brackets, and installed electrical disconnect box per code requirements. System commissioned and tested for proper operation.
Drake H.
Drake H. Checked in
Completed full HVAC system replacement installing a 3-ton Lennox 15.5 SEER heat pump with matching air handler. Positioned outdoor condensing unit on concrete pad against building exterior with proper clearances, ran refrigerant linesets along exterior wall with secure mounting brackets, and installed electrical disconnect box per code requirements. System commissioned and tested for proper operation.
Boonville, IN 47601
Completed Platinum Level Planned Duo Maintenance on two HVAC systems servicing the residence. Primary unit is a Goodman CAPF87A5C6DB central cooling air conditioner manufactured in 2012, utilizing R22/R410A refrigerant with 450 PSIG design pressure specifications. Secondary unit is an Amana outdoor condensing unit positioned on concrete pad with professional landscaping integration. 

Performed comprehensive maintenance protocol including inspection of both systems, replaced 20x25x4 air filter and polarized filter media, verified refrigerant charge levels, checked electrical connections at outdoor disconnect boxes, cleaned condenser coils, inspected drain pan operations, and confirmed proper system cycling. Both units demonstrated normal operational parameters upon completion of scheduled maintenance. All manufacturer specifications and safety standards were observed throughout service delivery.
Completed Platinum Level Planned Duo Maintenance on two HVAC systems servicing the residence. Primary unit is a Goodman CAPF87A5C6DB central cooling air conditioner manufactured in 2012, utilizing R22/R410A refrigerant with 450 PSIG design pressure specifications. Secondary unit is an Amana outdoor condensing unit positioned on concrete pad with professional landscaping integration. 

Performed comprehensive maintenance protocol including inspection of both systems, replaced 20x25x4 air filter and polarized filter media, verified refrigerant charge levels, checked electrical connections at outdoor disconnect boxes, cleaned condenser coils, inspected drain pan operations, and confirmed proper system cycling. Both units demonstrated normal operational parameters upon completion of scheduled maintenance. All manufacturer specifications and safety standards were observed throughout service delivery.
Nicholas M.
Nicholas M. Checked in
Completed Platinum Level Planned Duo Maintenance on two HVAC systems servicing the residence. Primary unit is a Goodman CAPF87A5C6DB central cooling air conditioner manufactured in 2012, utilizing R22/R410A refrigerant with 450 PSIG design pressure specifications. Secondary unit is an Amana outdoor condensing unit positioned on concrete pad with professional landscaping integration. Performed comprehensive maintenance protocol including inspection of both systems, replaced 20x25x4 air filter and polarized filter media, verified refrigerant charge levels, checked electrical connections at outdoor disconnect boxes, cleaned condenser coils, inspected drain pan operations, and confirmed proper system cycling. Both units demonstrated normal operational parameters upon completion of scheduled maintenance. All manufacturer specifications and safety standards were observed throughout service delivery.
Boonville, IN 47601
Boonville, IN - Completed planned HVAC maintenance on 2-year-old system as part of second maintenance visit. Inspected and serviced all major components including capacitor, electrical connections, and outdoor unit. Replaced 16x25x5 air filter and verified proper operation of all system functions. Customer advised to contact office to renew membership and schedule next maintenance visit.
Tyler C.
Tyler C. Checked in
Completed planned HVAC maintenance on 2-year-old system as part of second maintenance visit. Inspected and serviced all major components including capacitor, electrical connections, and outdoor unit. Replaced 16x25x5 air filter and verified proper operation of all system functions. Customer advised to contact office to renew membership and schedule next maintenance visit.
Boonville, IN 47601
Conducted comprehensive replacement estimate for residential HVAC system currently 17 years old and still operational. Evaluated existing furnace, ductwork configuration, control systems including H2A332 controller with multi-zone terminal connections, and associated mechanical room infrastructure to provide equipment replacement options and installation requirements.
Conducted comprehensive replacement estimate for residential HVAC system currently 17 years old and still operational. Evaluated existing furnace, ductwork configuration, control systems including H2A332 controller with multi-zone terminal connections, and associated mechanical room infrastructure to provide equipment replacement options and installation requirements.
James W.
James W. Checked in
Conducted comprehensive replacement estimate for residential HVAC system currently 17 years old and still operational. Evaluated existing furnace, ductwork configuration, control systems including H2A332 controller with multi-zone terminal connections, and associated mechanical room infrastructure to provide equipment replacement options and installation requirements.
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.