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

Completed scheduled maintenance tune-up on a 2-year-old Lennox heat pump system currently operating properly. Performed comprehensive inspection of electrical control components including transformer, contactors, relays, and main control board PCB with all connections verified secure. Inspected heat exchanger coil assembly, serpentine refrigerant lines, and evaporator coil noting minor surface discoloration consistent with normal operation; all components functioning within manufacturer specifications with system confirmed operational upon completion.
Completed scheduled maintenance tune-up on a 2-year-old Lennox heat pump system currently operating properly. Performed comprehensive inspection of electrical control components including transformer, contactors, relays, and main control board PCB with all connections verified secure. Inspected heat exchanger coil assembly, serpentine refrigerant lines, and evaporator coil noting minor surface discoloration consistent with normal operation; all components functioning within manufacturer specifications with system confirmed operational upon completion.
Michael H.
Michael H. Checked in
Completed scheduled maintenance tune-up on a 2-year-old Lennox heat pump system currently operating properly. Performed comprehensive inspection of electrical control components including transformer, contactors, relays, and main control board PCB with all connections verified secure. Inspected heat exchanger coil assembly, serpentine refrigerant lines, and evaporator coil noting minor surface discoloration consistent with normal operation; all components functioning within manufacturer specifications with system confirmed operational upon completion.
Boonville, IN 47601
Completed routine planned maintenance on residential air conditioning system installed in 2020. Performed comprehensive AC tune-up including electrical diagnostics, measuring voltage at 385V using calibrated multimeter to verify proper power supply to system components. Inspected evaporator coil assembly, noting significant oxidation and patina on copper tubing consistent with system age and normal moisture exposure. Observed dust and debris accumulation on aluminum cooling fins. Verified refrigerant line connections and brass valve fittings for proper sealing. Checked condensate drain system including PVC piping for proper drainage. All electrical connections tested and found operational. System operating within normal parameters upon completion of maintenance service.
Completed routine planned maintenance on residential air conditioning system installed in 2020. Performed comprehensive AC tune-up including electrical diagnostics, measuring voltage at 385V using calibrated multimeter to verify proper power supply to system components. Inspected evaporator coil assembly, noting significant oxidation and patina on copper tubing consistent with system age and normal moisture exposure. Observed dust and debris accumulation on aluminum cooling fins. Verified refrigerant line connections and brass valve fittings for proper sealing. Checked condensate drain system including PVC piping for proper drainage. All electrical connections tested and found operational. System operating within normal parameters upon completion of maintenance service.
Michael H.
Michael H. Checked in
Completed routine planned maintenance on residential air conditioning system installed in 2020. Performed comprehensive AC tune-up including electrical diagnostics, measuring voltage at 385V using calibrated multimeter to verify proper power supply to system components. Inspected evaporator coil assembly, noting significant oxidation and patina on copper tubing consistent with system age and normal moisture exposure. Observed dust and debris accumulation on aluminum cooling fins. Verified refrigerant line connections and brass valve fittings for proper sealing. Checked condensate drain system including PVC piping for proper drainage. All electrical connections tested and found operational. System operating within normal parameters upon completion of maintenance service.
Boonville, IN 47601
Boonville, IN - Successfully installed a 12,000 BTU Lennox ductless mini-split system with indoor wall-mounted evaporator unit. The installation was completed professionally with proper mounting, refrigerant line connections, condensate drainage, and electrical wiring, resulting in a fully operational system displaying 62°F on the digital control panel.
Addison B.
Addison B. Checked in
Successfully installed a 12,000 BTU Lennox ductless mini-split system with indoor wall-mounted evaporator unit. The installation was completed professionally with proper mounting, refrigerant line connections, condensate drainage, and electrical wiring, resulting in a fully operational system displaying 62°F on the digital control panel.
Boonville, IN 47601
# HVAC Install - Complete System

Completed Day 2 of full system installation featuring a 3-ton Lennox EL18XC1CV-036-230B04 air conditioning condenser with 18 SEER efficiency rating paired with an 80% AFUE upflow gas furnace with fully modulating capabilities. The outdoor condenser unit was positioned on ground-level pad with proper clearances and secured connections. In the attic space, installed the air handler unit on wooden platform with appropriate structural support and connected flexible aluminum ductwork routing to existing distribution system. Ran electrical wiring from air handler to power source following code requirements. Installed fiberglass insulation around ductwork connections to maximize system efficiency. Verified all electrical connections at single-phase 230V power supply with proper amperage ratings per manufacturer specifications. System commissioning included verifying proper refrigerant charge, airflow measurements, and testing modulating furnace operation acro
# HVAC Install - Complete System

Completed Day 2 of full system installation featuring a 3-ton Lennox EL18XC1CV-036-230B04 air conditioning condenser with 18 SEER efficiency rating paired with an 80% AFUE upflow gas furnace with fully modulating capabilities. The outdoor condenser unit was positioned on ground-level pad with proper clearances and secured connections. In the attic space, installed the air handler unit on wooden platform with appropriate structural support and connected flexible aluminum ductwork routing to existing distribution system. Ran electrical wiring from air handler to power source following code requirements. Installed fiberglass insulation around ductwork connections to maximize system efficiency. Verified all electrical connections at single-phase 230V power supply with proper amperage ratings per manufacturer specifications. System commissioning included verifying proper refrigerant charge, airflow measurements, and testing modulating furnace operation acro
Drake H.
Drake H. Checked in
# HVAC Install - Complete System Completed Day 2 of full system installation featuring a 3-ton Lennox EL18XC1CV-036-230B04 air conditioning condenser with 18 SEER efficiency rating paired with an 80% AFUE upflow gas furnace with fully modulating capabilities. The outdoor condenser unit was positioned on ground-level pad with proper clearances and secured connections. In the attic space, installed the air handler unit on wooden platform with appropriate structural support and connected flexible aluminum ductwork routing to existing distribution system. Ran electrical wiring from air handler to power source following code requirements. Installed fiberglass insulation around ductwork connections to maximize system efficiency. Verified all electrical connections at single-phase 230V power supply with proper amperage ratings per manufacturer specifications. System commissioning included verifying proper refrigerant charge, airflow measurements, and testing modulating furnace operation acro
Boonville, IN 47601
Completed planned maintenance visit on 12-year-old single-system residential HVAC installation consisting of Carrier furnace with integrated humidifier and matching outdoor condensing unit. Performed comprehensive system inspection including visual assessment of indoor equipment installation, ductwork connections, and exterior condenser unit condition. All equipment operational with no immediate service concerns identified during this second follow-up maintenance visit.
Completed planned maintenance visit on 12-year-old single-system residential HVAC installation consisting of Carrier furnace with integrated humidifier and matching outdoor condensing unit. Performed comprehensive system inspection including visual assessment of indoor equipment installation, ductwork connections, and exterior condenser unit condition. All equipment operational with no immediate service concerns identified during this second follow-up maintenance visit.
Luke O.
Luke O. Checked in
Completed planned maintenance visit on 12-year-old single-system residential HVAC installation consisting of Carrier furnace with integrated humidifier and matching outdoor condensing unit. Performed comprehensive system inspection including visual assessment of indoor equipment installation, ductwork connections, and exterior condenser unit condition. All equipment operational with no immediate service concerns identified during this second follow-up maintenance visit.
Boonville, IN 47601
Completed annual planned maintenance on 11-year-old HVAC system located in utility closet. Performed standard maintenance procedures including system inspection, filter replacement with 20x20x1 filters, and operational testing of furnace unit. Delivered additional filters as requested and documented equipment condition with photographs showing unit, PVC ventilation piping, and access panels in satisfactory working order.
Completed annual planned maintenance on 11-year-old HVAC system located in utility closet. Performed standard maintenance procedures including system inspection, filter replacement with 20x20x1 filters, and operational testing of furnace unit. Delivered additional filters as requested and documented equipment condition with photographs showing unit, PVC ventilation piping, and access panels in satisfactory working order.
Luke O.
Luke O. Checked in
Completed annual planned maintenance on 11-year-old HVAC system located in utility closet. Performed standard maintenance procedures including system inspection, filter replacement with 20x20x1 filters, and operational testing of furnace unit. Delivered additional filters as requested and documented equipment condition with photographs showing unit, PVC ventilation piping, and access panels in satisfactory working order.
Boonville, IN 47601
Completed comprehensive Platinum Level planned maintenance on dual HVAC system consisting of two 1-year-old units. Performed thorough inspection of three outdoor condensing units located on exterior gravel pad area, checking refrigerant lines, electrical connections, and verifying proper operation of all components. Inspected indoor equipment including furnace units, ductwork, and plenum assemblies. Replaced two 16x25x5 air filters as part of routine maintenance protocol. Verified all PVC condensate drainage, tested safety controls, and confirmed proper airflow throughout both systems. All equipment operating within manufacturer specifications with no issues identified.
Completed comprehensive Platinum Level planned maintenance on dual HVAC system consisting of two 1-year-old units. Performed thorough inspection of three outdoor condensing units located on exterior gravel pad area, checking refrigerant lines, electrical connections, and verifying proper operation of all components. Inspected indoor equipment including furnace units, ductwork, and plenum assemblies. Replaced two 16x25x5 air filters as part of routine maintenance protocol. Verified all PVC condensate drainage, tested safety controls, and confirmed proper airflow throughout both systems. All equipment operating within manufacturer specifications with no issues identified.
Luke O.
Luke O. Checked in
Completed comprehensive Platinum Level planned maintenance on dual HVAC system consisting of two 1-year-old units. Performed thorough inspection of three outdoor condensing units located on exterior gravel pad area, checking refrigerant lines, electrical connections, and verifying proper operation of all components. Inspected indoor equipment including furnace units, ductwork, and plenum assemblies. Replaced two 16x25x5 air filters as part of routine maintenance protocol. Verified all PVC condensate drainage, tested safety controls, and confirmed proper airflow throughout both systems. All equipment operating within manufacturer specifications with no issues identified.
Boonville, IN 47601
Conducted comprehensive site evaluation for mini-split system installation at residential property. Assessed exterior and interior mounting locations, documented existing building structure including wood siding and brick exterior, evaluated electrical access points, and photographed proposed equipment placement areas to develop accurate system sizing and installation quote.
Conducted comprehensive site evaluation for mini-split system installation at residential property. Assessed exterior and interior mounting locations, documented existing building structure including wood siding and brick exterior, evaluated electrical access points, and photographed proposed equipment placement areas to develop accurate system sizing and installation quote.
Danny M.
Danny M. Checked in
Conducted comprehensive site evaluation for mini-split system installation at residential property. Assessed exterior and interior mounting locations, documented existing building structure including wood siding and brick exterior, evaluated electrical access points, and photographed proposed equipment placement areas to develop accurate system sizing and installation quote.
Boonville, IN 47601
Boonville, IN - Completed planned maintenance on a 3-year-old HVAC system during second scheduled visit. Serviced outdoor condenser unit, replaced 20x25x5 air filter, and performed standard system inspection to ensure optimal performance and efficiency.
Michael H.
Michael H. Checked in
Completed planned maintenance on a 3-year-old HVAC system during second scheduled visit. Serviced outdoor condenser unit, replaced 20x25x5 air filter, and performed standard system inspection to ensure optimal performance and efficiency.
Boonville, IN 47601
Boonville, IN - Completed routine planned maintenance on air conditioning system. Performed comprehensive inspection of evaporator coil assembly, noting significant oxidation on copper coil surfaces and refrigerant lines consistent with system age and normal operation. All internal components inspected and found operational, with heat exchanger and ventilation elements showing standard wear patterns. System tested and confirmed functioning within normal parameters.
Michael H.
Michael H. Checked in
Completed routine planned maintenance on air conditioning system. Performed comprehensive inspection of evaporator coil assembly, noting significant oxidation on copper coil surfaces and refrigerant lines consistent with system age and normal operation. All internal components inspected and found operational, with heat exchanger and ventilation elements showing standard wear patterns. System tested and confirmed functioning within normal parameters.
Boonville, IN 47601
Boonville, IN - Conducted on-site evaluation for complete HVAC system replacement at residential property. Documented existing outdoor equipment configuration, including current piping layout, plumbing connections, and available workspace for new system installation. Captured detailed photographs of installation area to provide accurate assessment for equipment specifications, required modifications to existing infrastructure, and comprehensive replacement quote preparation.
Danny M.
Danny M. Checked in
Conducted on-site evaluation for complete HVAC system replacement at residential property. Documented existing outdoor equipment configuration, including current piping layout, plumbing connections, and available workspace for new system installation. Captured detailed photographs of installation area to provide accurate assessment for equipment specifications, required modifications to existing infrastructure, and comprehensive replacement quote preparation.
Boonville, IN 47601
Responded to no cooling call on approximately 20-year-old space pak system that was unable to maintain temperature setpoint, with thermostat set to 78°F but indoor temperature reading 85°F. Upon inspection, found aging high-velocity HVAC system installed in attic space showing signs of significant wear and decreased capacity. System evaluation revealed unit was operating but struggling to achieve adequate cooling output due to age-related degradation. Documented existing equipment condition including heavily insulated refrigerant lines and attic-mounted air handler configuration typical of space pak installations. Discussed system performance limitations with homeowner and provided options for improving comfort, including repair versus replacement considerations given the advanced age of the equipment and diminishing efficiency.
Responded to no cooling call on approximately 20-year-old space pak system that was unable to maintain temperature setpoint, with thermostat set to 78°F but indoor temperature reading 85°F. Upon inspection, found aging high-velocity HVAC system installed in attic space showing signs of significant wear and decreased capacity. System evaluation revealed unit was operating but struggling to achieve adequate cooling output due to age-related degradation. Documented existing equipment condition including heavily insulated refrigerant lines and attic-mounted air handler configuration typical of space pak installations. Discussed system performance limitations with homeowner and provided options for improving comfort, including repair versus replacement considerations given the advanced age of the equipment and diminishing efficiency.
Danny M.
Danny M. Checked in
Responded to no cooling call on approximately 20-year-old space pak system that was unable to maintain temperature setpoint, with thermostat set to 78°F but indoor temperature reading 85°F. Upon inspection, found aging high-velocity HVAC system installed in attic space showing signs of significant wear and decreased capacity. System evaluation revealed unit was operating but struggling to achieve adequate cooling output due to age-related degradation. Documented existing equipment condition including heavily insulated refrigerant lines and attic-mounted air handler configuration typical of space pak installations. Discussed system performance limitations with homeowner and provided options for improving comfort, including repair versus replacement considerations given the advanced age of the equipment and diminishing efficiency.
Boonville, IN 47601
Responded to no cooling complaint on 3-4 year old outdoor combination unit that had never been operated in cooling mode. Upon arrival, confirmed reduced airflow and blower motor operating at diminished capacity. Diagnosed system requiring thorough cleaning due to extended period of non-use and accumulated debris affecting airflow and cooling performance. Documented interior ventilation components and system conditions with photos for service records.
Responded to no cooling complaint on 3-4 year old outdoor combination unit that had never been operated in cooling mode. Upon arrival, confirmed reduced airflow and blower motor operating at diminished capacity. Diagnosed system requiring thorough cleaning due to extended period of non-use and accumulated debris affecting airflow and cooling performance. Documented interior ventilation components and system conditions with photos for service records.
Christian C.
Christian C. Checked in
Responded to no cooling complaint on 3-4 year old outdoor combination unit that had never been operated in cooling mode. Upon arrival, confirmed reduced airflow and blower motor operating at diminished capacity. Diagnosed system requiring thorough cleaning due to extended period of non-use and accumulated debris affecting airflow and cooling performance. Documented interior ventilation components and system conditions with photos for service records.
Boonville, IN 47601
Boonville, IN - Responded to no cooling complaint on 10-year-old system with inadequate airflow to upstairs bedroom vents and elevated temperatures reaching 85°F. Investigated ductwork serving affected zones and discovered supply duct disconnection at plenum connection point in attic space. Reconnected and sealed ductwork using mastic, restoring proper airflow to all upstairs registers and resolving temperature imbalance between floors.
Francis I.
Francis I. Checked in
Responded to no cooling complaint on 10-year-old system with inadequate airflow to upstairs bedroom vents and elevated temperatures reaching 85°F. Investigated ductwork serving affected zones and discovered supply duct disconnection at plenum connection point in attic space. Reconnected and sealed ductwork using mastic, restoring proper airflow to all upstairs registers and resolving temperature imbalance between floors.
Boonville, IN 47601
Boonville, IN - Completed second annual Gold Level planned maintenance on 7-year-old residential HVAC system. Performed comprehensive inspection of air handler unit with front panel removed to access internal components including evaporator coil, heat exchanger, and electrical connections. Verified proper operation of all wiring harnesses and checked condition of coils for debris or damage. Inspected PVC condensate drain lines for proper flow and connections. Examined insulated ductwork and verified secure attachment points. Replaced 20x25x5 media filter per maintenance protocol. Checked condensate pump operation and verified proper drainage. All components found operating within normal parameters and system performing as expected.
Christian C.
Christian C. Checked in
Completed second annual Gold Level planned maintenance on 7-year-old residential HVAC system. Performed comprehensive inspection of air handler unit with front panel removed to access internal components including evaporator coil, heat exchanger, and electrical connections. Verified proper operation of all wiring harnesses and checked condition of coils for debris or damage. Inspected PVC condensate drain lines for proper flow and connections. Examined insulated ductwork and verified secure attachment points. Replaced 20x25x5 media filter per maintenance protocol. Checked condensate pump operation and verified proper drainage. All components found operating within normal parameters and system performing as expected.
Boonville, IN 47601
Completed installation of 3-ton, 14.7 SEER Lennox air conditioning system with matching evaporator coil in side yard location. Unit was properly positioned on concrete pad with adequate clearance, refrigerant lines were connected and charged to manufacturer specifications as verified by manifold gauge readings, and system was tested for proper operation with pressures stabilized at 439 PSIG high side and 310.8 PSIG low side with corresponding temperatures confirming correct refrigerant charge.
Completed installation of 3-ton, 14.7 SEER Lennox air conditioning system with matching evaporator coil in side yard location. Unit was properly positioned on concrete pad with adequate clearance, refrigerant lines were connected and charged to manufacturer specifications as verified by manifold gauge readings, and system was tested for proper operation with pressures stabilized at 439 PSIG high side and 310.8 PSIG low side with corresponding temperatures confirming correct refrigerant charge.
Adam M.
Adam M. Checked in
Completed installation of 3-ton, 14.7 SEER Lennox air conditioning system with matching evaporator coil in side yard location. Unit was properly positioned on concrete pad with adequate clearance, refrigerant lines were connected and charged to manufacturer specifications as verified by manifold gauge readings, and system was tested for proper operation with pressures stabilized at 439 PSIG high side and 310.8 PSIG low side with corresponding temperatures confirming correct refrigerant charge.
Boonville, IN 47601
Completed annual planned maintenance on 1-year-old residential HVAC system during second visit. Performed comprehensive inspection of furnace and associated components, verified proper operation of blower motor assembly, and inspected all electrical connections and controls. Replaced 16x25x5 air filter per maintenance schedule. Inspected condensate drain lines, PVC venting system, and flexible ductwork for proper installation and function. All equipment operating within normal parameters with no deficiencies noted.
Completed annual planned maintenance on 1-year-old residential HVAC system during second visit. Performed comprehensive inspection of furnace and associated components, verified proper operation of blower motor assembly, and inspected all electrical connections and controls. Replaced 16x25x5 air filter per maintenance schedule. Inspected condensate drain lines, PVC venting system, and flexible ductwork for proper installation and function. All equipment operating within normal parameters with no deficiencies noted.
Christian C.
Christian C. Checked in
Completed annual planned maintenance on 1-year-old residential HVAC system during second visit. Performed comprehensive inspection of furnace and associated components, verified proper operation of blower motor assembly, and inspected all electrical connections and controls. Replaced 16x25x5 air filter per maintenance schedule. Inspected condensate drain lines, PVC venting system, and flexible ductwork for proper installation and function. All equipment operating within normal parameters with no deficiencies noted.
Boonville, IN 47601
Boonville, IN - Responded to no cooling call on 20-year-old system with complete loss of airflow. Upon arrival, verified Lennox Signature Stat thermostat had power and display was functioning properly. Performed diagnostic evaluation of HVAC system to determine cause of no air handler operation and identified failure requiring system replacement due to age and condition of equipment.
Craig U.
Craig U. Checked in
Responded to no cooling call on 20-year-old system with complete loss of airflow. Upon arrival, verified Lennox Signature Stat thermostat had power and display was functioning properly. Performed diagnostic evaluation of HVAC system to determine cause of no air handler operation and identified failure requiring system replacement due to age and condition of equipment.
Boonville, IN 47601
Completed Platinum Level maintenance on a 6-year-old single HVAC system. Replaced 20x25x5 furnace filter, inspected outdoor condensing unit positioned on concrete pad against building exterior, and verified proper system operation. All components found in good working condition with no issues identified during inspection.
Completed Platinum Level maintenance on a 6-year-old single HVAC system. Replaced 20x25x5 furnace filter, inspected outdoor condensing unit positioned on concrete pad against building exterior, and verified proper system operation. All components found in good working condition with no issues identified during inspection.
Jeremiah H.
Jeremiah H. Checked in
Completed Platinum Level maintenance on a 6-year-old single HVAC system. Replaced 20x25x5 furnace filter, inspected outdoor condensing unit positioned on concrete pad against building exterior, and verified proper system operation. All components found in good working condition with no issues identified during inspection.
Boonville, IN 47601
Conducted comprehensive replacement estimate for 23-year-old residential HVAC system. Evaluated existing outdoor condensing unit located in side yard between house and wooden fence, noting unit positioned on concrete pad with adequate clearance. Assessed current system configuration including downflow air handler setup with existing furnace, evaporator coil, and base components. Documented equipment dimensions and spatial constraints for replacement planning, including 40-foot refrigerant line set routing from outdoor unit to indoor air handling equipment. Photographed existing installation conditions and created technical schematic showing proposed vertical equipment configuration with color-coded component layout. Provided homeowner with detailed replacement options and specifications for new system installation to address aging equipment concerns.
Conducted comprehensive replacement estimate for 23-year-old residential HVAC system. Evaluated existing outdoor condensing unit located in side yard between house and wooden fence, noting unit positioned on concrete pad with adequate clearance. Assessed current system configuration including downflow air handler setup with existing furnace, evaporator coil, and base components. Documented equipment dimensions and spatial constraints for replacement planning, including 40-foot refrigerant line set routing from outdoor unit to indoor air handling equipment. Photographed existing installation conditions and created technical schematic showing proposed vertical equipment configuration with color-coded component layout. Provided homeowner with detailed replacement options and specifications for new system installation to address aging equipment concerns.
James W.
James W. Checked in
Conducted comprehensive replacement estimate for 23-year-old residential HVAC system. Evaluated existing outdoor condensing unit located in side yard between house and wooden fence, noting unit positioned on concrete pad with adequate clearance. Assessed current system configuration including downflow air handler setup with existing furnace, evaporator coil, and base components. Documented equipment dimensions and spatial constraints for replacement planning, including 40-foot refrigerant line set routing from outdoor unit to indoor air handling equipment. Photographed existing installation conditions and created technical schematic showing proposed vertical equipment configuration with color-coded component layout. Provided homeowner with detailed replacement options and specifications for new system installation to address aging equipment concerns.
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.