HVAC & Generators In Shepherdsville, 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 Shepherdsville, KY

Brand new AC condenser unit in front of wooden fence

With the average temps throughout the year ranging from 28 to 88 degrees in Shepherdsville, you need HVAC you can rely on. That’s where the team at A+ Derr Heating & Cooling steps in. Since 1975, we’ve been providing service to the Shepherdsville community. Our team carries decades of experience with homes just like yours.

You can schedule a time for A+ Derr to visit your home in Shepherdsville by contacting us online or calling (844) 577-9729.

Your Local Shepherdsville Heating Experts

When the cold rolls in, you can count on us to be there for you. We service various heating systems to help as many residents as possible. Our team offers heat pump, boiler, geothermal, and furnace replacement, repair, and maintenance services in Shepherdsville. Additionally, we offer emergency heating services when your heating system fails you in the bitter cold.Schedule an appointment with A+ Derr in no time. Call (844) 577-9729 to request service for your heating system.

Air Conditioning Services You Can Trust

A Kentucky home without a functioning air conditioner in the heat is an unlivable one. A+ Derr offers a full set of AC services for residents in Shepherdsville, KY. Our AC services include the following:

On top of traditional cooling services, we’re also here for you during emergencies. If you find yourself stuck in the sweltering heat with no AC, the team at A+ Derr is here. Our emergency air conditioning repair services are there to prevent you from suffering from the heat.

Indoor Air Quality Specialists

An important aspect of your home’s health is the indoor air quality. Our indoor air quality services include the following:

  • Duct cleaning: Harmful allergens and pollutants build up in ductwork, so it’s important to get your ducts cleaned regularly.
  • Air purifiers: Ensuring that your breathing air stays safe, an air purifier will go a long way to keep your home safe.
  • Humidifiers: Sometimes, your home can become too dry and cause the air to become irritable.
  • Dehumidifiers: Dehumidifiers are a great option to remove excess moisture and prevent mold.

If you want to see how indoor air quality services can improve your home, call (844) 577-9729 to request an appointment with A+ Derr.

Home Generator Services

A great way to improve your home’s stability is by installing a Generac generator. With the severe weather that rolls through the Kentuckian region, power outages are something every homeowner has to consider. But when you let us install a Generac generator in your home, you won’t have to worry about losing power.

Why Choose Us?

For nearly 50 years, the team at A+ Derr Heating & Cooling has provided outstanding work to residents throughout the Kentuckian region. On top of glowing reviews, every job we do has a 100% satisfaction guarantee. After all, you deserve the best for your home’s HVAC system.

Schedule HVAC or generator services for your Shepherdsville home today. Contact A+ Derr online or call (844) 577-9729.

Recent Jobs and Reviews in Shepherdsville, KY

Job Locations and Reviews

Completed Platinum Level maintenance on a single HVAC system during the first visit of an 8-year service agreement. Replaced 16x25x5 air filter, performed comprehensive system diagnostics using digital measuring instruments to verify temperature differentials and electrical parameters, and confirmed all components operating within manufacturer specifications.
Completed Platinum Level maintenance on a single HVAC system during the first visit of an 8-year service agreement. Replaced 16x25x5 air filter, performed comprehensive system diagnostics using digital measuring instruments to verify temperature differentials and electrical parameters, and confirmed all components operating within manufacturer specifications.
Shaun K.
Shaun K. Checked in
Completed Platinum Level maintenance on a single HVAC system during the first visit of an 8-year service agreement. Replaced 16x25x5 air filter, performed comprehensive system diagnostics using digital measuring instruments to verify temperature differentials and electrical parameters, and confirmed all components operating within manufacturer specifications.
Shepherdsville, KY 40165
Completed Platinum Level maintenance on a 7-year-old HVAC system, including replacement of the 16x20x5 air filter as recommended from the previous visit. Performed comprehensive system diagnostics using digital multimeter, verifying electrical readings and system performance parameters to ensure optimal operation.
Completed Platinum Level maintenance on a 7-year-old HVAC system, including replacement of the 16x20x5 air filter as recommended from the previous visit. Performed comprehensive system diagnostics using digital multimeter, verifying electrical readings and system performance parameters to ensure optimal operation.
Shaun K.
Shaun K. Checked in
Completed Platinum Level maintenance on a 7-year-old HVAC system, including replacement of the 16x20x5 air filter as recommended from the previous visit. Performed comprehensive system diagnostics using digital multimeter, verifying electrical readings and system performance parameters to ensure optimal operation.
Shepherdsville, KY 40165
Conducted comprehensive HVAC replacement estimate for residential system with 7-year-old cooling unit running constantly and heating system approximately 15+ years old. Evaluated existing electrical panel configuration, circuit breaker setup, and ductwork condition to determine full system replacement requirements including air duct work modifications. Documented existing equipment specifications, electrical infrastructure, and mechanical components to provide complete replacement proposal for both heating and cooling systems.
Conducted comprehensive HVAC replacement estimate for residential system with 7-year-old cooling unit running constantly and heating system approximately 15+ years old. Evaluated existing electrical panel configuration, circuit breaker setup, and ductwork condition to determine full system replacement requirements including air duct work modifications. Documented existing equipment specifications, electrical infrastructure, and mechanical components to provide complete replacement proposal for both heating and cooling systems.
Brad C.
Brad C. Checked in
Conducted comprehensive HVAC replacement estimate for residential system with 7-year-old cooling unit running constantly and heating system approximately 15+ years old. Evaluated existing electrical panel configuration, circuit breaker setup, and ductwork condition to determine full system replacement requirements including air duct work modifications. Documented existing equipment specifications, electrical infrastructure, and mechanical components to provide complete replacement proposal for both heating and cooling systems.
Shepherdsville, KY 40165
Shepherdsville, KY - Completed scheduled HVAC maintenance on Lennox system unit. Performed comprehensive tune-up inspection, verified refrigerant line connections, checked electrical connections, and confirmed proper system operation with no issues identified.
Kenny H.
Kenny H. Checked in
Completed scheduled HVAC maintenance on Lennox system unit. Performed comprehensive tune-up inspection, verified refrigerant line connections, checked electrical connections, and confirmed proper system operation with no issues identified.
Shepherdsville, KY 40165
Completed second annual planned maintenance visit on 8-year-old HVAC system. Performed comprehensive system diagnostics on outdoor condensing unit, including electrical testing with multimeter to verify proper voltage and amperage readings. Measured supply voltage at 386V and confirmed compressor amp draw at 8.5A, both within manufacturer specifications. Inspected condenser fan motor operation and blade condition through protective grille. Verified all electrical connections and terminals for proper contact and absence of corrosion. System operating efficiently with all parameters normal. Recommend filter replacement with 16x25x5 filter per maintenance schedule and renewal of annual maintenance agreement for continued system protection.
Completed second annual planned maintenance visit on 8-year-old HVAC system. Performed comprehensive system diagnostics on outdoor condensing unit, including electrical testing with multimeter to verify proper voltage and amperage readings. Measured supply voltage at 386V and confirmed compressor amp draw at 8.5A, both within manufacturer specifications. Inspected condenser fan motor operation and blade condition through protective grille. Verified all electrical connections and terminals for proper contact and absence of corrosion. System operating efficiently with all parameters normal. Recommend filter replacement with 16x25x5 filter per maintenance schedule and renewal of annual maintenance agreement for continued system protection.
Kenny H.
Kenny H. Checked in
Completed second annual planned maintenance visit on 8-year-old HVAC system. Performed comprehensive system diagnostics on outdoor condensing unit, including electrical testing with multimeter to verify proper voltage and amperage readings. Measured supply voltage at 386V and confirmed compressor amp draw at 8.5A, both within manufacturer specifications. Inspected condenser fan motor operation and blade condition through protective grille. Verified all electrical connections and terminals for proper contact and absence of corrosion. System operating efficiently with all parameters normal. Recommend filter replacement with 16x25x5 filter per maintenance schedule and renewal of annual maintenance agreement for continued system protection.
Shepherdsville, KY 40165
Completed diagnostic inspection on 1-year-old HVAC system with reported operational concerns. Accessed crawlspace to inspect flexible ductwork installation and support strapping. Verified floor register placement and airflow distribution to living space. Documented existing conditions of insulated supply duct routing and structural support components. System confirmed operational at time of service with repair parts ordered and ready for installation upon arrival.
Completed diagnostic inspection on 1-year-old HVAC system with reported operational concerns. Accessed crawlspace to inspect flexible ductwork installation and support strapping. Verified floor register placement and airflow distribution to living space. Documented existing conditions of insulated supply duct routing and structural support components. System confirmed operational at time of service with repair parts ordered and ready for installation upon arrival.
Shaun K.
Shaun K. Checked in
Completed diagnostic inspection on 1-year-old HVAC system with reported operational concerns. Accessed crawlspace to inspect flexible ductwork installation and support strapping. Verified floor register placement and airflow distribution to living space. Documented existing conditions of insulated supply duct routing and structural support components. System confirmed operational at time of service with repair parts ordered and ready for installation upon arrival.
Shepherdsville, KY 40165
Conducted follow-up site visit to inspect mini-split system and verify replacement parts prior to scheduled installation. Photographed equipment specifications and model information on new mini-split indoor heads, confirmed part numbers match work order requirements. Utilized refrigerant manifold gauge set to assess system operating parameters and document baseline readings for upcoming replacement of all indoor heads and outdoor condensing unit.
Conducted follow-up site visit to inspect mini-split system and verify replacement parts prior to scheduled installation. Photographed equipment specifications and model information on new mini-split indoor heads, confirmed part numbers match work order requirements. Utilized refrigerant manifold gauge set to assess system operating parameters and document baseline readings for upcoming replacement of all indoor heads and outdoor condensing unit.
Tanner E.
Tanner E. Checked in
Conducted follow-up site visit to inspect mini-split system and verify replacement parts prior to scheduled installation. Photographed equipment specifications and model information on new mini-split indoor heads, confirmed part numbers match work order requirements. Utilized refrigerant manifold gauge set to assess system operating parameters and document baseline readings for upcoming replacement of all indoor heads and outdoor condensing unit.
Shepherdsville, KY 40165
Shepherdsville, KY - Responded to service call for 1-year-old Navien tankless water heater displaying error code 003 with no hot water production. Performed diagnostic evaluation of unit with front cover removed to access internal components. Inspected heat exchanger assembly, circuit boards, electrical controls, and all associated plumbing connections including hot and cold water lines and gas supply line. Identified and resolved error code issue, restoring full hot water functionality to the system.
Paul G.
Paul G. Checked in
Responded to service call for 1-year-old Navien tankless water heater displaying error code 003 with no hot water production. Performed diagnostic evaluation of unit with front cover removed to access internal components. Inspected heat exchanger assembly, circuit boards, electrical controls, and all associated plumbing connections including hot and cold water lines and gas supply line. Identified and resolved error code issue, restoring full hot water functionality to the system.
Shepherdsville, KY 40165
Completed comprehensive HVAC system replacement estimate for existing air handler and evaporator coil assembly located in attic space. Assessed current system configuration including foil-faced insulated air handler unit, copper refrigerant line set, PVC condensate drain line, and existing ductwork with reflective insulation. Documented equipment dimensions and spatial constraints for replacement unit sizing. Evaluated attic access, clearances, and installation requirements for new system components. Provided homeowner with detailed replacement options and specifications for complete system upgrade.
Completed comprehensive HVAC system replacement estimate for existing air handler and evaporator coil assembly located in attic space. Assessed current system configuration including foil-faced insulated air handler unit, copper refrigerant line set, PVC condensate drain line, and existing ductwork with reflective insulation. Documented equipment dimensions and spatial constraints for replacement unit sizing. Evaluated attic access, clearances, and installation requirements for new system components. Provided homeowner with detailed replacement options and specifications for complete system upgrade.
Brad C.
Brad C. Checked in
Completed comprehensive HVAC system replacement estimate for existing air handler and evaporator coil assembly located in attic space. Assessed current system configuration including foil-faced insulated air handler unit, copper refrigerant line set, PVC condensate drain line, and existing ductwork with reflective insulation. Documented equipment dimensions and spatial constraints for replacement unit sizing. Evaluated attic access, clearances, and installation requirements for new system components. Provided homeowner with detailed replacement options and specifications for complete system upgrade.
Shepherdsville, KY 40165
Completed installation of 40-gallon gas slim water heater in residential utility closet. Connected copper water supply lines with brass shut-off valves, attached flexible yellow gas line to unit, and verified proper venting through existing galvanized vent pipe extending through ceiling. Installation includes 6-year manufacturer warranty on parts and 1-year labor warranty.
Completed installation of 40-gallon gas slim water heater in residential utility closet. Connected copper water supply lines with brass shut-off valves, attached flexible yellow gas line to unit, and verified proper venting through existing galvanized vent pipe extending through ceiling. Installation includes 6-year manufacturer warranty on parts and 1-year labor warranty.
Paul G.
Paul G. Checked in
Completed installation of 40-gallon gas slim water heater in residential utility closet. Connected copper water supply lines with brass shut-off valves, attached flexible yellow gas line to unit, and verified proper venting through existing galvanized vent pipe extending through ceiling. Installation includes 6-year manufacturer warranty on parts and 1-year labor warranty.
Shepherdsville, KY 40165
Shepherdsville, KY - Responded to emergency call for water heater failure and conducted on-site estimate for 32-gallon gas tank water heater replacement. Assessed existing plumbing configuration including copper supply lines with shut-off valves and evaluated installation requirements in utility room area. Provided homeowner with replacement options and specifications for new tank-style gas water heater system.
Paul G.
Paul G. Checked in
Responded to emergency call for water heater failure and conducted on-site estimate for 32-gallon gas tank water heater replacement. Assessed existing plumbing configuration including copper supply lines with shut-off valves and evaluated installation requirements in utility room area. Provided homeowner with replacement options and specifications for new tank-style gas water heater system.
Shepherdsville, KY 40165
Completed warranty follow-up visit to finalize previous water heater installation after electrical power was restored to the system. Previously installed 50-gallon electric water heater with new ball valves and replaced shallow well water pump with pressure tank and copper piping connections. Return visit scheduled to replace 5 shut-off valves, perform minor reciprocating work on shut-offs, and relocate shower head to new position per specifications.
Completed warranty follow-up visit to finalize previous water heater installation after electrical power was restored to the system. Previously installed 50-gallon electric water heater with new ball valves and replaced shallow well water pump with pressure tank and copper piping connections. Return visit scheduled to replace 5 shut-off valves, perform minor reciprocating work on shut-offs, and relocate shower head to new position per specifications.
Paul G.
Paul G. Checked in
Completed warranty follow-up visit to finalize previous water heater installation after electrical power was restored to the system. Previously installed 50-gallon electric water heater with new ball valves and replaced shallow well water pump with pressure tank and copper piping connections. Return visit scheduled to replace 5 shut-off valves, perform minor reciprocating work on shut-offs, and relocate shower head to new position per specifications.
Shepherdsville, KY 40165
Conducted comprehensive HVAC system evaluation for non-functional air conditioning unit in recently purchased residential property. Assessed existing outdoor condensing unit located in narrow utility area alongside gas lines, electrical conduits, and plumbing infrastructure, noting equipment condition and accessibility constraints. Inspected basement-installed furnace system with vertical venting configuration, evaluated existing ductwork, and documented current equipment specifications. Provided complete replacement estimate options and discussed available financing solutions for full HVAC system installation.
Conducted comprehensive HVAC system evaluation for non-functional air conditioning unit in recently purchased residential property. Assessed existing outdoor condensing unit located in narrow utility area alongside gas lines, electrical conduits, and plumbing infrastructure, noting equipment condition and accessibility constraints. Inspected basement-installed furnace system with vertical venting configuration, evaluated existing ductwork, and documented current equipment specifications. Provided complete replacement estimate options and discussed available financing solutions for full HVAC system installation.
Brad C.
Brad C. Checked in
Conducted comprehensive HVAC system evaluation for non-functional air conditioning unit in recently purchased residential property. Assessed existing outdoor condensing unit located in narrow utility area alongside gas lines, electrical conduits, and plumbing infrastructure, noting equipment condition and accessibility constraints. Inspected basement-installed furnace system with vertical venting configuration, evaluated existing ductwork, and documented current equipment specifications. Provided complete replacement estimate options and discussed available financing solutions for full HVAC system installation.
Shepherdsville, KY 40165
Completed planned maintenance visit on residential single-system HVAC unit with focus on cooling system components. Performed comprehensive inspection of outdoor condenser unit, verified proper operation of fan assembly and compressor, checked refrigerant levels, and cleaned condenser coils. Inspected thermostat operation showing system set to 72°F in cooling mode with auto fan setting, confirmed accurate temperature readings and proper communication between thermostat and equipment. Documented system condition with photos showing outdoor unit in good operational condition with no visible damage or wear, proper drainage around gravel pad, and secure electrical connections. All cooling system components functioning within normal parameters for 4-year-old equipment using 16x25x1 filter size.
Completed planned maintenance visit on residential single-system HVAC unit with focus on cooling system components. Performed comprehensive inspection of outdoor condenser unit, verified proper operation of fan assembly and compressor, checked refrigerant levels, and cleaned condenser coils. Inspected thermostat operation showing system set to 72°F in cooling mode with auto fan setting, confirmed accurate temperature readings and proper communication between thermostat and equipment. Documented system condition with photos showing outdoor unit in good operational condition with no visible damage or wear, proper drainage around gravel pad, and secure electrical connections. All cooling system components functioning within normal parameters for 4-year-old equipment using 16x25x1 filter size.
Neal H.
Neal H. Checked in
Completed planned maintenance visit on residential single-system HVAC unit with focus on cooling system components. Performed comprehensive inspection of outdoor condenser unit, verified proper operation of fan assembly and compressor, checked refrigerant levels, and cleaned condenser coils. Inspected thermostat operation showing system set to 72°F in cooling mode with auto fan setting, confirmed accurate temperature readings and proper communication between thermostat and equipment. Documented system condition with photos showing outdoor unit in good operational condition with no visible damage or wear, proper drainage around gravel pad, and secure electrical connections. All cooling system components functioning within normal parameters for 4-year-old equipment using 16x25x1 filter size.
Shepherdsville, KY 40165
Installed new 1/2 HP well pump system with diaphragm expansion tank and pressure gauge in basement utility area, running new water lines and making all necessary connections to the existing plumbing system. Installed 50-gallon A.O. Smith electric short water heater with copper supply lines and red shut-off valve assembly. All equipment mounted securely on concrete floor with proper clearances, pressure monitoring capabilities in place, and system tested for proper operation upon completion.
Installed new 1/2 HP well pump system with diaphragm expansion tank and pressure gauge in basement utility area, running new water lines and making all necessary connections to the existing plumbing system. Installed 50-gallon A.O. Smith electric short water heater with copper supply lines and red shut-off valve assembly. All equipment mounted securely on concrete floor with proper clearances, pressure monitoring capabilities in place, and system tested for proper operation upon completion.
Paul G.
Paul G. Checked in
Installed new 1/2 HP well pump system with diaphragm expansion tank and pressure gauge in basement utility area, running new water lines and making all necessary connections to the existing plumbing system. Installed 50-gallon A.O. Smith electric short water heater with copper supply lines and red shut-off valve assembly. All equipment mounted securely on concrete floor with proper clearances, pressure monitoring capabilities in place, and system tested for proper operation upon completion.
Shepherdsville, KY 40165
Shepherdsville, KY - Completed follow-up visit to discuss maintenance plan options and advised of Platinum Plan benefits, including extended labor warranty coverage for the new system. Delivered and provided 16x26x5 Pure Aire filter kit at no charge as previously arranged. Documented visit with photos of equipment location.
Kenny H.
Kenny H. Checked in
Completed follow-up visit to discuss maintenance plan options and advised of Platinum Plan benefits, including extended labor warranty coverage for the new system. Delivered and provided 16x26x5 Pure Aire filter kit at no charge as previously arranged. Documented visit with photos of equipment location.
Shepherdsville, KY 40165
Responded to service call for water heater and well pump inspection following previous flood damage that resulted in 8 feet of water in the home. Upon arrival, conducted thorough assessment of existing U.S. Craftmaster water heater with 6.75M capacity, which exhibited significant deterioration including extensive rust staining, discoloration, and visible wear throughout the tank exterior, particularly concentrated on the lower third of the unit. Inspected well pump system including blue pressurized expansion tank mounted on metal frame platform and horizontal circulation pump with associated piping connections. Documented condition of all equipment with photographs showing compromised water heater condition likely resulting from flood exposure. Evaluated pressure tank, pump assembly, copper piping, valves, and electrical connections for proper operation and signs of water damage. Provided customer with assessment findings regarding water heater condition and recommendations for replace
Responded to service call for water heater and well pump inspection following previous flood damage that resulted in 8 feet of water in the home. Upon arrival, conducted thorough assessment of existing U.S. Craftmaster water heater with 6.75M capacity, which exhibited significant deterioration including extensive rust staining, discoloration, and visible wear throughout the tank exterior, particularly concentrated on the lower third of the unit. Inspected well pump system including blue pressurized expansion tank mounted on metal frame platform and horizontal circulation pump with associated piping connections. Documented condition of all equipment with photographs showing compromised water heater condition likely resulting from flood exposure. Evaluated pressure tank, pump assembly, copper piping, valves, and electrical connections for proper operation and signs of water damage. Provided customer with assessment findings regarding water heater condition and recommendations for replace
Paul G.
Paul G. Checked in
Responded to service call for water heater and well pump inspection following previous flood damage that resulted in 8 feet of water in the home. Upon arrival, conducted thorough assessment of existing U.S. Craftmaster water heater with 6.75M capacity, which exhibited significant deterioration including extensive rust staining, discoloration, and visible wear throughout the tank exterior, particularly concentrated on the lower third of the unit. Inspected well pump system including blue pressurized expansion tank mounted on metal frame platform and horizontal circulation pump with associated piping connections. Documented condition of all equipment with photographs showing compromised water heater condition likely resulting from flood exposure. Evaluated pressure tank, pump assembly, copper piping, valves, and electrical connections for proper operation and signs of water damage. Provided customer with assessment findings regarding water heater condition and recommendations for replace
Shepherdsville, KY 40165
Completed installation of I-Wave air purification system on existing Bryant HVAC unit and added two new supply registers to the ductwork system. All components were properly mounted, sealed with foam insulation at connection points, and tested for proper operation to enhance indoor air quality.
Completed installation of I-Wave air purification system on existing Bryant HVAC unit and added two new supply registers to the ductwork system. All components were properly mounted, sealed with foam insulation at connection points, and tested for proper operation to enhance indoor air quality.
Brandon H.
Brandon H. Checked in
Completed installation of I-Wave air purification system on existing Bryant HVAC unit and added two new supply registers to the ductwork system. All components were properly mounted, sealed with foam insulation at connection points, and tested for proper operation to enhance indoor air quality.
Shepherdsville, KY 40165
Responded to no cooling call on 7-year-old residential air conditioning system. Upon arrival, verified thermostat was calling for cooling with display showing 78°F actual temperature and 75°F setpoint. Proceeded to outdoor condensing unit to perform diagnostic testing. Using digital multimeter, tested electrical components and identified failed dual-run capacitor with reading of 438 volts during system operation. Replaced defective capacitor with manufacturer-specified replacement unit. Cycled system through complete operational test, confirmed proper voltage readings, verified compressor and condenser fan motor startup, and restored full cooling functionality to the system.
Responded to no cooling call on 7-year-old residential air conditioning system. Upon arrival, verified thermostat was calling for cooling with display showing 78°F actual temperature and 75°F setpoint. Proceeded to outdoor condensing unit to perform diagnostic testing. Using digital multimeter, tested electrical components and identified failed dual-run capacitor with reading of 438 volts during system operation. Replaced defective capacitor with manufacturer-specified replacement unit. Cycled system through complete operational test, confirmed proper voltage readings, verified compressor and condenser fan motor startup, and restored full cooling functionality to the system.
Neal H.
Neal H. Checked in
Responded to no cooling call on 7-year-old residential air conditioning system. Upon arrival, verified thermostat was calling for cooling with display showing 78°F actual temperature and 75°F setpoint. Proceeded to outdoor condensing unit to perform diagnostic testing. Using digital multimeter, tested electrical components and identified failed dual-run capacitor with reading of 438 volts during system operation. Replaced defective capacitor with manufacturer-specified replacement unit. Cycled system through complete operational test, confirmed proper voltage readings, verified compressor and condenser fan motor startup, and restored full cooling functionality to the system.
Shepherdsville, KY 40165
Conducted comprehensive indoor air quality assessment and HVAC system evaluation for residential property. Documented existing Bryant air handler installation in utility closet, including flexible ductwork connections, refrigerant line routing, and electrical conduit placement. Photographed secondary HVAC system featuring stacked configuration with furnace/air handler base unit and evaporator coil assembly, noting insulated ductwork connections and proper refrigerant line installation. Prepared detailed estimate for indoor air quality improvements based on current system conditions and customer requirements.
Conducted comprehensive indoor air quality assessment and HVAC system evaluation for residential property. Documented existing Bryant air handler installation in utility closet, including flexible ductwork connections, refrigerant line routing, and electrical conduit placement. Photographed secondary HVAC system featuring stacked configuration with furnace/air handler base unit and evaporator coil assembly, noting insulated ductwork connections and proper refrigerant line installation. Prepared detailed estimate for indoor air quality improvements based on current system conditions and customer requirements.
Brad C.
Brad C. Checked in
Conducted comprehensive indoor air quality assessment and HVAC system evaluation for residential property. Documented existing Bryant air handler installation in utility closet, including flexible ductwork connections, refrigerant line routing, and electrical conduit placement. Photographed secondary HVAC system featuring stacked configuration with furnace/air handler base unit and evaporator coil assembly, noting insulated ductwork connections and proper refrigerant line installation. Prepared detailed estimate for indoor air quality improvements based on current system conditions and customer requirements.
Shepherdsville, KY 40165
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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.