HVAC & Generators In Shelbyville, KY | Heating & Air
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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HVAC & Generators in Shelbyville, KY

AC condenser unit with fall leaves on and around it

Nestled in the heart of Shelbyville, Kentucky, where weather patterns can shift dramatically, securing reliable HVAC and generator services is paramount for year-round comfort. With bitter winters and scorching summers, having a trustworthy heating and cooling system is essential for maintaining a cozy home environment. A+ Derr Heating & Cooling, a reputable family-operated business, committed to offering top-notch HVAC services tailored to the unique climate challenges of the region.

Established in 1975, A+ Derr Heating & Cooling has been a pillar in the HVAC industry, serving both Evansville, Indiana, and Louisville, Kentucky, in the area collectively known as “Kentuckiana.” As a fourth-generation family-operated company, we pride ourselves on our longstanding commitment to quality service and customer satisfaction.

Your Local Shelbyville Heating Experts

When winter’s chill sets in, your local Shelbyville heating experts are dedicated to providing comprehensive services for your heating needs. Specializing in the installation and repair of various heating systems, including furnaces, boilersheat pumpsmini-splitsgeothermal setups, and packaged units, we ensure your home remains comfortable year-round. With a focus on system replacements 24/7 emergency assistance, A+ Derr Heating & Air Conditioning stands ready to address any heating issues promptly, especially during critical times like winter when no heat is a pressing concern. Our commitment to quality service and expertise makes our team a reliable choice for keeping your home warm and cozy.Don’t let a heating emergency leave you in the cold. Reach out to A+ Derr at (844) 577-9729 to schedule reliable service in Shelbyville.

Air Conditioning Services You Can Trust

In the sweltering Shelbyville summers, a malfunctioning AC system can be intolerable. A+ Derr’s 24/7 repair service guarantees rapid responses to restore your cooling comfort. From repairs and replacements to routine maintenance, our team ensures your AC runs efficiently when you need it most. Whether it’s a minor repair or a complete AC overhaul, A+ Derr is your trusted partner for all your air conditioning needs.Keep cool all summer long with A+ Derr Heating & Cooling. Call us today at (844) 577-9729 and schedule trustworthy AC services.

Indoor Air Quality Specialists

Indoor air quality is vital for a healthy living environment, influencing our well-being and comfort. At A+ Derr, we recognize the importance of clean air and provide a range of services to guarantee optimal indoor air quality. Let us assist you in creating a healthier and more comfortable home:

  • Air Purifiers: Eliminate odorous and harmful gases for fresher, healthier air year-round.
  • Duct Cleaning: Remove dust and allergens to enhance indoor air quality.
  • Humidifiers: Maintain optimal humidity levels for healthier living.
  • Dehumidifiers: Prevent mold and mildew growth by controlling humidity levels effectively.

Enhance your home’s air quality with A+ Derr’s expert services. Contact us today at (844) 577-9729 to get a free quote and learn more about improving your indoor air quality.

Home Generator Services

Ensure your home remains powered during outages with A+ Derr’s reliable generator installations. By offering top-of-the-line Generac generators, we provide you with peace of mind, knowing you have a dependable backup power source in emergencies. Our team of experts will assess your home’s needs and install a generator that suits your requirements, ensuring uninterrupted power supply during blackouts.

Why Choose A+ Derr?

Choosing A+ Derr Heating & Cooling means choosing a team committed to delivering exceptional service and tailored to meet your specific HVAC needs in Shelbyville, KY. With a dedication to quality workmanship, reliability, and customer satisfaction, A+ Derr is the trusted choice for all your heating, cooling, and generator needs.

With 24/7 service, 100% satisfaction guarantee, and free estimates on replacement quotes and service calls, A+ Derr stands out as a premier HVAC provider. As a Lennox Premier Dealer, we ensure top-quality installations and replacements, emphasizing our commitment to excellence.

Explore the world of superior HVAC services with A+ Derr Heating & Cooling, your reliable partner in heating, cooling, and generator solutions in Shelbyville and beyond. Our motto is simple: Service today or you don’t pay. This commitment underscores our dedication to providing prompt and effective solutions for all your HVAC needs.

Discover the A+ Derr difference for yourself. Contact our team at (844) 577-9729 for unparalleled HVAC and generator services.  Schedule a free consultation today!

Recent Jobs and Reviews in Shelbyville, KY

Job Locations and Reviews

Shelbyville, KY - Responded to no cooling complaint on 2-year-old system with indoor temperature at 80°F and thermostat set to 72°F. Found outdoor unit running with condenser fan operational but system not cooling effectively due to severely restricted airflow from dirty air filter. Replaced air filter and verified proper system operation with adequate airflow and cooling capacity restored.
Jordyn R.
Jordyn R. Checked in
Responded to no cooling complaint on 2-year-old system with indoor temperature at 80°F and thermostat set to 72°F. Found outdoor unit running with condenser fan operational but system not cooling effectively due to severely restricted airflow from dirty air filter. Replaced air filter and verified proper system operation with adequate airflow and cooling capacity restored.
Shelbyville, KY 40065
Completed scheduled AC tune-up and maintenance service on residential air conditioning system. Performed comprehensive system inspection, electrical diagnostics using digital multimeter to verify proper voltage and amperage readings at condensing unit, and documented equipment condition. Noted significant vegetation growth obstructing outdoor condensing unit airflow, which can reduce system efficiency and restrict proper heat exchange if not addressed.
Completed scheduled AC tune-up and maintenance service on residential air conditioning system. Performed comprehensive system inspection, electrical diagnostics using digital multimeter to verify proper voltage and amperage readings at condensing unit, and documented equipment condition. Noted significant vegetation growth obstructing outdoor condensing unit airflow, which can reduce system efficiency and restrict proper heat exchange if not addressed.
Shaun K.
Shaun K. Checked in
Completed scheduled AC tune-up and maintenance service on residential air conditioning system. Performed comprehensive system inspection, electrical diagnostics using digital multimeter to verify proper voltage and amperage readings at condensing unit, and documented equipment condition. Noted significant vegetation growth obstructing outdoor condensing unit airflow, which can reduce system efficiency and restrict proper heat exchange if not addressed.
Shelbyville, KY 40065
Completed Platinum Level maintenance on 6-year-old HVAC system. Performed comprehensive system inspection including temperature diagnostics using infrared thermometer, recording supply air temperature of 53.4°F at indoor unit. Conducted electrical testing at outdoor condenser unit using clamp meter, verifying voltage at 115.9V and amperage draw at 20.21A on system wiring. Replaced 16x20x4 air filter per monthly maintenance schedule. Inspected all electrical connections, refrigerant lines, and mechanical components. System operating within normal parameters with no deficiencies noted.
Completed Platinum Level maintenance on 6-year-old HVAC system. Performed comprehensive system inspection including temperature diagnostics using infrared thermometer, recording supply air temperature of 53.4°F at indoor unit. Conducted electrical testing at outdoor condenser unit using clamp meter, verifying voltage at 115.9V and amperage draw at 20.21A on system wiring. Replaced 16x20x4 air filter per monthly maintenance schedule. Inspected all electrical connections, refrigerant lines, and mechanical components. System operating within normal parameters with no deficiencies noted.
Shaun K.
Shaun K. Checked in
Completed Platinum Level maintenance on 6-year-old HVAC system. Performed comprehensive system inspection including temperature diagnostics using infrared thermometer, recording supply air temperature of 53.4°F at indoor unit. Conducted electrical testing at outdoor condenser unit using clamp meter, verifying voltage at 115.9V and amperage draw at 20.21A on system wiring. Replaced 16x20x4 air filter per monthly maintenance schedule. Inspected all electrical connections, refrigerant lines, and mechanical components. System operating within normal parameters with no deficiencies noted.
Shelbyville, KY 40065
Responded to emergency call for active water leak in bathroom with water dripping onto light fixture below. Upon arrival, found leak originating from bathroom plumbing with water supply not shut off, creating potential safety hazard and ongoing property damage. Performed diagnostic inspection of bathtub area, identifying source of leak and assessing condition of existing plumbing fixtures including chrome spout, diverter valve, and drain assembly. Documented aging bathroom fixtures showing typical wear patterns, mineral deposits, and discoloration consistent with older plumbing systems. Shut off water supply to prevent further damage and completed assessment of affected areas to determine necessary repairs.
Responded to emergency call for active water leak in bathroom with water dripping onto light fixture below. Upon arrival, found leak originating from bathroom plumbing with water supply not shut off, creating potential safety hazard and ongoing property damage. Performed diagnostic inspection of bathtub area, identifying source of leak and assessing condition of existing plumbing fixtures including chrome spout, diverter valve, and drain assembly. Documented aging bathroom fixtures showing typical wear patterns, mineral deposits, and discoloration consistent with older plumbing systems. Shut off water supply to prevent further damage and completed assessment of affected areas to determine necessary repairs.
Paul G.
Paul G. Checked in
Responded to emergency call for active water leak in bathroom with water dripping onto light fixture below. Upon arrival, found leak originating from bathroom plumbing with water supply not shut off, creating potential safety hazard and ongoing property damage. Performed diagnostic inspection of bathtub area, identifying source of leak and assessing condition of existing plumbing fixtures including chrome spout, diverter valve, and drain assembly. Documented aging bathroom fixtures showing typical wear patterns, mineral deposits, and discoloration consistent with older plumbing systems. Shut off water supply to prevent further damage and completed assessment of affected areas to determine necessary repairs.
Shelbyville, KY 40065
Completed scheduled HVAC maintenance on Goodman system including air conditioning tune-up and furnace inspection. Performed electrical diagnostics using digital multimeter to verify proper voltage and system operation, tested all electrical connections and components for safety and performance. Inspected furnace unit for proper operation, verified gas line connections, checked ventilation systems, and confirmed all manufacturer specifications were met. System found to be operating within normal parameters with no immediate service needs identified.
Completed scheduled HVAC maintenance on Goodman system including air conditioning tune-up and furnace inspection. Performed electrical diagnostics using digital multimeter to verify proper voltage and system operation, tested all electrical connections and components for safety and performance. Inspected furnace unit for proper operation, verified gas line connections, checked ventilation systems, and confirmed all manufacturer specifications were met. System found to be operating within normal parameters with no immediate service needs identified.
Neal H.
Neal H. Checked in
Completed scheduled HVAC maintenance on Goodman system including air conditioning tune-up and furnace inspection. Performed electrical diagnostics using digital multimeter to verify proper voltage and system operation, tested all electrical connections and components for safety and performance. Inspected furnace unit for proper operation, verified gas line connections, checked ventilation systems, and confirmed all manufacturer specifications were met. System found to be operating within normal parameters with no immediate service needs identified.
Shelbyville, KY 40065
Shelbyville, KY - Responded to reported toilet leak and flushing irregularities affecting one of two recently installed toilets. Upon inspection, removed toilet to expose flange and discovered deteriorated wax ring seal causing water leakage onto bathroom floor, evidenced by significant water staining on linoleum. Replaced faulty wax ring, reinstalled toilet with proper sealing, and tested flush mechanism to ensure proper operation and complete leak resolution.
Paul G.
Paul G. Checked in
Responded to reported toilet leak and flushing irregularities affecting one of two recently installed toilets. Upon inspection, removed toilet to expose flange and discovered deteriorated wax ring seal causing water leakage onto bathroom floor, evidenced by significant water staining on linoleum. Replaced faulty wax ring, reinstalled toilet with proper sealing, and tested flush mechanism to ensure proper operation and complete leak resolution.
Shelbyville, KY 40065
Shelbyville, KY - Responded to kitchen sink draining slowly in 30-year-old home. Upon inspection of under-sink plumbing, identified blockage in P-trap assembly. Disassembled white PVC drain pipe system, cleared accumulated debris and buildup causing restriction in drainage. Reassembled all connections, verified proper water flow, and tested system to ensure complete resolution. Drain now functioning at full capacity with no remaining slow drainage issues.
Paul G.
Paul G. Checked in
Responded to kitchen sink draining slowly in 30-year-old home. Upon inspection of under-sink plumbing, identified blockage in P-trap assembly. Disassembled white PVC drain pipe system, cleared accumulated debris and buildup causing restriction in drainage. Reassembled all connections, verified proper water flow, and tested system to ensure complete resolution. Drain now functioning at full capacity with no remaining slow drainage issues.
Shelbyville, KY 40065
Responded to complaint of loud humming noise from outdoor condensing unit on 5-year-old system. Performed diagnostic evaluation and confirmed system operational with cooling mode active. Verified thermostat settings at 71°F with proper communication to equipment. Measured supply air temperature at 53°F at register, indicating adequate cooling performance. Inspected outdoor unit and noted significant corrosion and deterioration on cabinet panels and metal surfaces, likely contributing to vibration amplification and noise generation. Documented equipment condition with photos showing extensive oxidation, moisture damage, and surface degradation on unit housing.
Responded to complaint of loud humming noise from outdoor condensing unit on 5-year-old system. Performed diagnostic evaluation and confirmed system operational with cooling mode active. Verified thermostat settings at 71°F with proper communication to equipment. Measured supply air temperature at 53°F at register, indicating adequate cooling performance. Inspected outdoor unit and noted significant corrosion and deterioration on cabinet panels and metal surfaces, likely contributing to vibration amplification and noise generation. Documented equipment condition with photos showing extensive oxidation, moisture damage, and surface degradation on unit housing.
Jordyn R.
Jordyn R. Checked in
Responded to complaint of loud humming noise from outdoor condensing unit on 5-year-old system. Performed diagnostic evaluation and confirmed system operational with cooling mode active. Verified thermostat settings at 71°F with proper communication to equipment. Measured supply air temperature at 53°F at register, indicating adequate cooling performance. Inspected outdoor unit and noted significant corrosion and deterioration on cabinet panels and metal surfaces, likely contributing to vibration amplification and noise generation. Documented equipment condition with photos showing extensive oxidation, moisture damage, and surface degradation on unit housing.
Shelbyville, KY 40065
Completed comprehensive remodel estimate and evaluation for unoccupied farmhouse constructed circa 1949. Assessed ground floor bathroom and kitchen areas requiring complete demolition and reconstruction, including all associated plumbing systems. Evaluated structural conditions including wall deterioration, exposed brick masonry, damaged drywall, and water heater accessibility. Documented significant wall damage with material separation at painted surface and brick junction, debris accumulation, and deteriorated substrate materials. Photographed active work area with protective floor coverings, exposed utility access points, and existing plumbing infrastructure. Identified potential mold concerns requiring further assessment and remediation planning. Evaluated back porch structure situated above unused cistern for necessary repairs. Provided detailed estimate for full bathroom and kitchen gut and rebuild, addressing all plumbing rough-in, fixture installation, and code compliance requi
Completed comprehensive remodel estimate and evaluation for unoccupied farmhouse constructed circa 1949. Assessed ground floor bathroom and kitchen areas requiring complete demolition and reconstruction, including all associated plumbing systems. Evaluated structural conditions including wall deterioration, exposed brick masonry, damaged drywall, and water heater accessibility. Documented significant wall damage with material separation at painted surface and brick junction, debris accumulation, and deteriorated substrate materials. Photographed active work area with protective floor coverings, exposed utility access points, and existing plumbing infrastructure. Identified potential mold concerns requiring further assessment and remediation planning. Evaluated back porch structure situated above unused cistern for necessary repairs. Provided detailed estimate for full bathroom and kitchen gut and rebuild, addressing all plumbing rough-in, fixture installation, and code compliance requi
Paul G.
Paul G. Checked in
Completed comprehensive remodel estimate and evaluation for unoccupied farmhouse constructed circa 1949. Assessed ground floor bathroom and kitchen areas requiring complete demolition and reconstruction, including all associated plumbing systems. Evaluated structural conditions including wall deterioration, exposed brick masonry, damaged drywall, and water heater accessibility. Documented significant wall damage with material separation at painted surface and brick junction, debris accumulation, and deteriorated substrate materials. Photographed active work area with protective floor coverings, exposed utility access points, and existing plumbing infrastructure. Identified potential mold concerns requiring further assessment and remediation planning. Evaluated back porch structure situated above unused cistern for necessary repairs. Provided detailed estimate for full bathroom and kitchen gut and rebuild, addressing all plumbing rough-in, fixture installation, and code compliance requi
Shelbyville, KY 40065
Responded to master bathroom for clogged toilet complaint. Inspected two-piece elongated bowl toilet with standard flush mechanism. Removed obstruction from drain line using appropriate clearing tools, restoring proper drainage and flush function. Tested flush valve, fill valve, and flapper assembly for proper operation. Verified complete water flow and drainage cycle upon completion.
Responded to master bathroom for clogged toilet complaint. Inspected two-piece elongated bowl toilet with standard flush mechanism. Removed obstruction from drain line using appropriate clearing tools, restoring proper drainage and flush function. Tested flush valve, fill valve, and flapper assembly for proper operation. Verified complete water flow and drainage cycle upon completion.
Paul G.
Paul G. Checked in
Responded to master bathroom for clogged toilet complaint. Inspected two-piece elongated bowl toilet with standard flush mechanism. Removed obstruction from drain line using appropriate clearing tools, restoring proper drainage and flush function. Tested flush valve, fill valve, and flapper assembly for proper operation. Verified complete water flow and drainage cycle upon completion.
Shelbyville, KY 40065
Returned to complete geothermal system repair following previous diagnosis of failed flow center pump causing intermittent system shutdown and no cooling condition. Replaced defective pump on flow center and performed pressure testing to verify proper operation and system integrity. System tested successfully with all zones operating normally and proper pressures maintained throughout.
Returned to complete geothermal system repair following previous diagnosis of failed flow center pump causing intermittent system shutdown and no cooling condition. Replaced defective pump on flow center and performed pressure testing to verify proper operation and system integrity. System tested successfully with all zones operating normally and proper pressures maintained throughout.
Kenny H.
Kenny H. Checked in
Returned to complete geothermal system repair following previous diagnosis of failed flow center pump causing intermittent system shutdown and no cooling condition. Replaced defective pump on flow center and performed pressure testing to verify proper operation and system integrity. System tested successfully with all zones operating normally and proper pressures maintained throughout.
Shelbyville, KY 40065
Completed full HVAC system installation including outdoor condensing unit and indoor air handler with associated refrigerant lines and condensate drainage. System was charged with refrigerant, tested for proper operation, and verified temperature differentials and pressures within manufacturer specifications using calibrated digital manifold gauges. All condensate piping was installed with proper pitch and drainage to ensure efficient moisture removal from the system.
Completed full HVAC system installation including outdoor condensing unit and indoor air handler with associated refrigerant lines and condensate drainage. System was charged with refrigerant, tested for proper operation, and verified temperature differentials and pressures within manufacturer specifications using calibrated digital manifold gauges. All condensate piping was installed with proper pitch and drainage to ensure efficient moisture removal from the system.
Christopher R.
Christopher R. Checked in
Completed full HVAC system installation including outdoor condensing unit and indoor air handler with associated refrigerant lines and condensate drainage. System was charged with refrigerant, tested for proper operation, and verified temperature differentials and pressures within manufacturer specifications using calibrated digital manifold gauges. All condensate piping was installed with proper pitch and drainage to ensure efficient moisture removal from the system.
Shelbyville, KY 40065
Shelbyville, KY - Responded to a return service call for inadequate cooling on a 4-year-old residential air conditioning system. Upon arrival, confirmed airflow present but insufficient cooling with no ice buildup at indoor unit. Connected Fieldpiece SMAN manifold gauges to outdoor condenser unit and performed refrigerant pressure and temperature diagnostics, recording system pressures and superheat/subcooling values to identify cooling deficiency. System evaluated and appropriate corrective measures taken to restore proper cooling operation.
Kenny H.
Kenny H. Checked in
Responded to a return service call for inadequate cooling on a 4-year-old residential air conditioning system. Upon arrival, confirmed airflow present but insufficient cooling with no ice buildup at indoor unit. Connected Fieldpiece SMAN manifold gauges to outdoor condenser unit and performed refrigerant pressure and temperature diagnostics, recording system pressures and superheat/subcooling values to identify cooling deficiency. System evaluated and appropriate corrective measures taken to restore proper cooling operation.
Shelbyville, KY 40065
Completed comprehensive HVAC system replacement estimate for non-operational heating and cooling equipment. Assessed existing ductwork dimensions and electrical service capacity, documenting 50-amp and 60-amp breaker configuration to determine compatibility requirements for new system installation. Customer expressed interest in financing options for complete system replacement.
Completed comprehensive HVAC system replacement estimate for non-operational heating and cooling equipment. Assessed existing ductwork dimensions and electrical service capacity, documenting 50-amp and 60-amp breaker configuration to determine compatibility requirements for new system installation. Customer expressed interest in financing options for complete system replacement.
Brad C.
Brad C. Checked in
Completed comprehensive HVAC system replacement estimate for non-operational heating and cooling equipment. Assessed existing ductwork dimensions and electrical service capacity, documenting 50-amp and 60-amp breaker configuration to determine compatibility requirements for new system installation. Customer expressed interest in financing options for complete system replacement.
Shelbyville, KY 40065
Shelbyville, KY - Successfully installed a new 50-gallon residential water heater in the basement utility area. The installation included proper copper piping connections, pressure relief valve, and metal vent pipe configuration in compliance with plumbing codes. The unit was positioned and secured against the wall with all manufacturer specifications verified and operational testing completed to ensure proper functionality.
Paul G.
Paul G. Checked in
Successfully installed a new 50-gallon residential water heater in the basement utility area. The installation included proper copper piping connections, pressure relief valve, and metal vent pipe configuration in compliance with plumbing codes. The unit was positioned and secured against the wall with all manufacturer specifications verified and operational testing completed to ensure proper functionality.
Shelbyville, KY 40065
Responded to service call for garage refrigerator repeatedly tripping circuit breaker. Inspected main electrical panel and identified affected circuit breaker serving garage outlets. Verified panel condition, proper labeling, and circuit load distribution to determine cause of nuisance tripping and ensure safe operation of dedicated appliance circuit.
Responded to service call for garage refrigerator repeatedly tripping circuit breaker. Inspected main electrical panel and identified affected circuit breaker serving garage outlets. Verified panel condition, proper labeling, and circuit load distribution to determine cause of nuisance tripping and ensure safe operation of dedicated appliance circuit.
Collin D.
Collin D. Checked in
Responded to service call for garage refrigerator repeatedly tripping circuit breaker. Inspected main electrical panel and identified affected circuit breaker serving garage outlets. Verified panel condition, proper labeling, and circuit load distribution to determine cause of nuisance tripping and ensure safe operation of dedicated appliance circuit.
Shelbyville, KY 40065
Shelbyville, KY - Responded to service call for 50-gallon Whirlpool gas water heater with no hot water production in detached shed. Performed diagnostic inspection of unit and associated components including gas control valve, burner assembly, thermocouple, pilot light, and venting system. Assessed copper supply lines, corrugated flex connector, shut-off valves, and temperature-pressure relief valve for proper operation. Documented current condition of water heater with photos showing installation configuration, gas connections, and safety labeling. Provided customer with diagnostic findings and repair versus replacement options based on age and condition of existing equipment.
Paul G.
Paul G. Checked in
Responded to service call for 50-gallon Whirlpool gas water heater with no hot water production in detached shed. Performed diagnostic inspection of unit and associated components including gas control valve, burner assembly, thermocouple, pilot light, and venting system. Assessed copper supply lines, corrugated flex connector, shut-off valves, and temperature-pressure relief valve for proper operation. Documented current condition of water heater with photos showing installation configuration, gas connections, and safety labeling. Provided customer with diagnostic findings and repair versus replacement options based on age and condition of existing equipment.
Shelbyville, KY 40065
Responded to report of gas odor near fireplace. Conducted comprehensive gas leak detection survey of accessible gas piping system, including lines servicing fireplace appliance in basement area. Performed visual inspection of exposed gas piping, fittings, and connections along walls and floor-mounted runs. Utilized gas detection equipment to test all accessible joints, valves, and pipe connections. No active gas leaks detected during pressure testing and leak survey. Verified all connections secure and system maintaining proper pressure. Documented piping configuration and condition with photographic evidence for service records.
Responded to report of gas odor near fireplace. Conducted comprehensive gas leak detection survey of accessible gas piping system, including lines servicing fireplace appliance in basement area. Performed visual inspection of exposed gas piping, fittings, and connections along walls and floor-mounted runs. Utilized gas detection equipment to test all accessible joints, valves, and pipe connections. No active gas leaks detected during pressure testing and leak survey. Verified all connections secure and system maintaining proper pressure. Documented piping configuration and condition with photographic evidence for service records.
Paul G.
Paul G. Checked in
Responded to report of gas odor near fireplace. Conducted comprehensive gas leak detection survey of accessible gas piping system, including lines servicing fireplace appliance in basement area. Performed visual inspection of exposed gas piping, fittings, and connections along walls and floor-mounted runs. Utilized gas detection equipment to test all accessible joints, valves, and pipe connections. No active gas leaks detected during pressure testing and leak survey. Verified all connections secure and system maintaining proper pressure. Documented piping configuration and condition with photographic evidence for service records.
Shelbyville, KY 40065
Shelbyville, KY - Responded to service call for breaker tripping when air compressor operates in garage. Inspected electrical outlet and circuit configuration, documented existing wiring setup with outlet serving dual loads. Diagnosed circuit overload condition caused by air compressor drawing excessive amperage on shared circuit, requiring dedicated circuit installation or load redistribution to prevent nuisance tripping.
Collin D.
Collin D. Checked in
Responded to service call for breaker tripping when air compressor operates in garage. Inspected electrical outlet and circuit configuration, documented existing wiring setup with outlet serving dual loads. Diagnosed circuit overload condition caused by air compressor drawing excessive amperage on shared circuit, requiring dedicated circuit installation or load redistribution to prevent nuisance tripping.
Shelbyville, KY 40065
Shelbyville, KY - Completed water heater replacement by draining and removing the existing tank from the residential utility room. Installed a new AC Smith ProLine 50-gallon short water heater utilizing the original shut-off valve and existing plumbing connections. Installed a new temperature and pressure relief valve with discharge pipe properly terminated to within 6 inches of the floor per code requirements. Reconnected copper supply lines with brass fittings and verified proper gas line connection to the control valve. Unit tested and confirmed operational with no leaks detected at connections.
Paul G.
Paul G. Checked in
Completed water heater replacement by draining and removing the existing tank from the residential utility room. Installed a new AC Smith ProLine 50-gallon short water heater utilizing the original shut-off valve and existing plumbing connections. Installed a new temperature and pressure relief valve with discharge pipe properly terminated to within 6 inches of the floor per code requirements. Reconnected copper supply lines with brass fittings and verified proper gas line connection to the control valve. Unit tested and confirmed operational with no leaks detected at connections.
Shelbyville, KY 40065
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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.