AC, Heating & Generator Service in Mount Washington, KY
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 & Generator Service in Mount Washington, KY

Newly installed Generac generator At A+ Derr Heating & Cooling, we understand the importance of good service in Mount Washington and Louisville, and we’re here to keep your home comfortable and hassle-free all year round. We take pride in caring for our customers promptly and professionally. Don’t take our word for it — check out what your neighbors are saying about trusting A+ Derr with their HVAC and generator needs. Contact A+ Derr Heating & Cooling today to request an appointment or get a FREE system replacement quote.

Top-Rated Air Conditioning

When temperatures rise in Mount Washington, cool air becomes essential for comfort and safety. Our expert team provides a range of air conditioning services to keep your home cool and energy-efficient.
  • Repair: Quick and reliable repairs to ensure your AC runs smoothly throughout the hot summer months.
  • Replacement: Expert guidance and installation of new, energy-efficient air conditioning systems tailored to your home’s needs.
  • Maintenance: Extends your AC unit’s lifespan and prevents costly breakdowns.
  • Ductless systems: An alternative to central air that offers zoned temperature control.

Heating Repair & Replacement

Staying warm during the freezing winter months is a priority. A+ Derr Heating & Cooling offers comprehensive heating repair, installation, and maintenance solutions to keep your home comfortable when temperatures drop:

Indoor Air Quality Solutions

Maintaining excellent indoor air quality is essential for your family’s comfort and health. From duct cleaning to air purifiers, and whole-house humidifiers to dehumidifiers, A+ Derr provides comprehensive indoor air quality solutions. Our advanced systems will help remove unwanted allergens from the air as well as control excess humidity, preventing mold and mildew so you can breathe easier.

Whole-Home Generators

Standby generators are an excellent option for homeowners looking to stay safe and secure all year. By installing one, you can rest assured knowing you’ll always have access to power, even when the weather or your power grid fails you. You should especially consider a whole-house generator if you have family members in your home who are sensitive to heat, like young children or older adults. Another good reason is if you have any appliances or equipment that must stay on all the time. We work with Generac to provide the best installation service with systems from the best brand in the industry.

Schedule in Mount Washington Today!

As a fourth-generation family-operated company, we take pride in serving families and making sure their homes are functioning smoothly and reliably. With our “service today or you don’t pay!” commitment and our 100% satisfaction guarantee, you can have peace of mind knowing that if you’re not satisfied with the product installed by us within the first year, we’ll buy it back. To help keep your home comfort needs affordable we offer free estimates on replacement quotes, flexible financing, and special promotions. Let our expert team handle all your HVAC and generator needs with professionalism and care. Contact A+ Derr to schedule service

FAQs

Ductless mini-splits are excellent for cooling in Kentucky due to their energy efficiency and flexibility. They provide targeted cooling, which is ideal for our variable climate, offering both cooling during hot summers and supplemental heating in colder months. Their compact size and ability to zone cooling make them a practical choice for homes where ductwork installation may be challenging.
Installing a new furnace usually takes anywhere from four to 10 hours. It depends on what kind of furnace you’re getting, how complicated the setup is, and if any ductwork needs tweaking. Our team at A+ Derr Heating & Cooling hustles to get it done efficiently, keeping your home comfortable with minimal fuss.
Whether you need a humidifier or dehumidifier depends on how your home feels humidity-wise. In Kentucky, where the weather swings, a humidifier can be a lifesaver during dry winters, keeping things cozy. On the flip side, a dehumidifier helps beat the mugginess in summer, keeping air fresh and mold-free.

Recent Jobs and Reviews in Mount Washington, KY

Job Locations and Reviews

Conducted an estimate for replacement of an aging R22 system experiencing refrigerant leak. Visual inspection revealed two rooftop units with significant wear on the older beige unit, including visible rust on fan components and deteriorated condition compared to the newer gray unit. Recommended full system replacement due to R22 phase-out and current system's non-operational status.
Conducted an estimate for replacement of an aging R22 system experiencing refrigerant leak. Visual inspection revealed two rooftop units with significant wear on the older beige unit, including visible rust on fan components and deteriorated condition compared to the newer gray unit. Recommended full system replacement due to R22 phase-out and current system's non-operational status.
Vince B.
Vince B. Checked in
Conducted an estimate for replacement of an aging R22 system experiencing refrigerant leak. Visual inspection revealed two rooftop units with significant wear on the older beige unit, including visible rust on fan components and deteriorated condition compared to the newer gray unit. Recommended full system replacement due to R22 phase-out and current system's non-operational status.
Mount Washington, KY 40047
Performed scheduled maintenance on American Standard HVAC system. Identified significant corrosion on capacitor terminals with multiple wiring connections showing wear. System includes furnace unit with proper ductwork, PVC ventilation pipes, and gas line connection; all components were inspected and are in functional condition.
Performed scheduled maintenance on American Standard HVAC system. Identified significant corrosion on capacitor terminals with multiple wiring connections showing wear. System includes furnace unit with proper ductwork, PVC ventilation pipes, and gas line connection; all components were inspected and are in functional condition.
Matthew S.
Matthew S. Checked in
Performed scheduled maintenance on American Standard HVAC system. Identified significant corrosion on capacitor terminals with multiple wiring connections showing wear. System includes furnace unit with proper ductwork, PVC ventilation pipes, and gas line connection; all components were inspected and are in functional condition.
Mount Washington, KY 40047
Conducted monthly platinum level maintenance on 1-year-old HVAC system, including replacement of 20x25x5 filter. Performed diagnostic testing with digital measurement tool and inspected plumbing components in utility area. System now operating at optimal efficiency.
Conducted monthly platinum level maintenance on 1-year-old HVAC system, including replacement of 20x25x5 filter. Performed diagnostic testing with digital measurement tool and inspected plumbing components in utility area. System now operating at optimal efficiency.
Anthony L.
Anthony L. Checked in
Conducted monthly platinum level maintenance on 1-year-old HVAC system, including replacement of 20x25x5 filter. Performed diagnostic testing with digital measurement tool and inspected plumbing components in utility area. System now operating at optimal efficiency.
Mount Washington, KY 40047
Performed comprehensive evaluation of aging residential HVAC system for potential replacement options. Conducted thorough inspection of existing furnace, noting significant wear on internal components including blower assembly, control board, and ventilation connections. Customer is interested in two Trane systems; detailed assessment completed to determine optimal replacement configurations.
Performed comprehensive evaluation of aging residential HVAC system for potential replacement options. Conducted thorough inspection of existing furnace, noting significant wear on internal components including blower assembly, control board, and ventilation connections. Customer is interested in two Trane systems; detailed assessment completed to determine optimal replacement configurations.
Cameron S.
Cameron S. Checked in
Performed comprehensive evaluation of aging residential HVAC system for potential replacement options. Conducted thorough inspection of existing furnace, noting significant wear on internal components including blower assembly, control board, and ventilation connections. Customer is interested in two Trane systems; detailed assessment completed to determine optimal replacement configurations.
Mount Washington, KY 40047
Completed Platinum Level maintenance on 2-year-old HVAC system. Replaced KOCH air filter and inspected copper refrigerant components. System is functioning properly with no issues detected.
Completed Platinum Level maintenance on 2-year-old HVAC system. Replaced KOCH air filter and inspected copper refrigerant components. System is functioning properly with no issues detected.
Victor W.
Victor W. Checked in
Completed Platinum Level maintenance on 2-year-old HVAC system. Replaced KOCH air filter and inspected copper refrigerant components. System is functioning properly with no issues detected.
Mount Washington, KY 40047
Conducted comprehensive HVAC system replacement estimate for customer who reported functioning current system. Inspected existing thermostat wiring configuration and electrical service meter (Aclara i-210+c, CL 200, 240V) to determine compatibility and capacity requirements for proposed new installation.
Conducted comprehensive HVAC system replacement estimate for customer who reported functioning current system. Inspected existing thermostat wiring configuration and electrical service meter (Aclara i-210+c, CL 200, 240V) to determine compatibility and capacity requirements for proposed new installation.
Brad C.
Brad C. Checked in
Conducted comprehensive HVAC system replacement estimate for customer who reported functioning current system. Inspected existing thermostat wiring configuration and electrical service meter (Aclara i-210+c, CL 200, 240V) to determine compatibility and capacity requirements for proposed new installation.
Mount Washington, KY 40047
Completed annual maintenance on 6-year-old Gold Level system. Performed temperature differential testing with readings showing 8°F below ambient, which is within acceptable range. Inspected control board circuitry and electrical connections, confirming proper operation of relay components and wiring integrity. All systems functioning normally; no issues detected.
Completed annual maintenance on 6-year-old Gold Level system. Performed temperature differential testing with readings showing 8°F below ambient, which is within acceptable range. Inspected control board circuitry and electrical connections, confirming proper operation of relay components and wiring integrity. All systems functioning normally; no issues detected.
Jordyn R.
Jordyn R. Checked in
Completed annual maintenance on 6-year-old Gold Level system. Performed temperature differential testing with readings showing 8°F below ambient, which is within acceptable range. Inspected control board circuitry and electrical connections, confirming proper operation of relay components and wiring integrity. All systems functioning normally; no issues detected.
Mount Washington, KY 40047
Inspected HVAC system electrical panel and identified a faulty contactor requiring replacement. Documented the existing wiring configuration with photos showing multiple connection points and some visible corrosion. Service technician Jordyn scheduled to return tomorrow morning to install new contactor.
Inspected HVAC system electrical panel and identified a faulty contactor requiring replacement. Documented the existing wiring configuration with photos showing multiple connection points and some visible corrosion. Service technician Jordyn scheduled to return tomorrow morning to install new contactor.
Jordyn R.
Jordyn R. Checked in
Inspected HVAC system electrical panel and identified a faulty contactor requiring replacement. Documented the existing wiring configuration with photos showing multiple connection points and some visible corrosion. Service technician Jordyn scheduled to return tomorrow morning to install new contactor.
Mount Washington, KY 40047
Responded to customer report of water leak in HVAC system. Located and addressed the source of the leak in a 1-year-old unit. Performed cleaning and testing of affected components, utilizing proper containment procedures to prevent water damage. Leak was resolved without any structural damage to the property.
Responded to customer report of water leak in HVAC system. Located and addressed the source of the leak in a 1-year-old unit. Performed cleaning and testing of affected components, utilizing proper containment procedures to prevent water damage. Leak was resolved without any structural damage to the property.
Victor W.
Victor W. Checked in
Responded to customer report of water leak in HVAC system. Located and addressed the source of the leak in a 1-year-old unit. Performed cleaning and testing of affected components, utilizing proper containment procedures to prevent water damage. Leak was resolved without any structural damage to the property.
Mount Washington, KY 40047
Performed scheduled Platinum Level maintenance on client's HVAC system (3 years old). Replaced 16x25x1 filter during first monthly visit. Temperature readings taken with SPK2 meter showed system operating at 104°F, within normal parameters. Inspected ductwork insulation for proper sealing and integrity.
Performed scheduled Platinum Level maintenance on client's HVAC system (3 years old). Replaced 16x25x1 filter during first monthly visit. Temperature readings taken with SPK2 meter showed system operating at 104°F, within normal parameters. Inspected ductwork insulation for proper sealing and integrity.
Victor W.
Victor W. Checked in
Performed scheduled Platinum Level maintenance on client's HVAC system (3 years old). Replaced 16x25x1 filter during first monthly visit. Temperature readings taken with SPK2 meter showed system operating at 104°F, within normal parameters. Inspected ductwork insulation for proper sealing and integrity.
Mount Washington, KY 40047
Performed monthly planned maintenance on 10-year-old CFI HVAC system. Measured supply air temperature (92.6°F) at ceiling register and inspected electrical connections and relays. All components functioning within normal parameters after service.
Performed monthly planned maintenance on 10-year-old CFI HVAC system. Measured supply air temperature (92.6°F) at ceiling register and inspected electrical connections and relays. All components functioning within normal parameters after service.
Jordyn R.
Jordyn R. Checked in
Performed monthly planned maintenance on 10-year-old CFI HVAC system. Measured supply air temperature (92.6°F) at ceiling register and inspected electrical connections and relays. All components functioning within normal parameters after service.
Mount Washington, KY 40047
Diagnosed floor heating system with failed circulating pump. Removed defective Grundfos pump and verified system pressure reading. Replacement pump has been ordered and placed on will-call status; customer to be notified when part arrives for installation appointment.
Diagnosed floor heating system with failed circulating pump. Removed defective Grundfos pump and verified system pressure reading. Replacement pump has been ordered and placed on will-call status; customer to be notified when part arrives for installation appointment.
Charlie M.
Charlie M. Checked in
Diagnosed floor heating system with failed circulating pump. Removed defective Grundfos pump and verified system pressure reading. Replacement pump has been ordered and placed on will-call status; customer to be notified when part arrives for installation appointment.
Mount Washington, KY 40047
Conducted scheduled quarterly maintenance service for condensing unit and air handling system. Inspected outdoor AC unit mounted on pad, checked manufacturer specifications, and examined condition of components. Replaced standard pleated air filter in interior air handler and inspected associated ductwork and connections.
Conducted scheduled quarterly maintenance service for condensing unit and air handling system. Inspected outdoor AC unit mounted on pad, checked manufacturer specifications, and examined condition of components. Replaced standard pleated air filter in interior air handler and inspected associated ductwork and connections.
Victor W.
Victor W. Checked in
Conducted scheduled quarterly maintenance service for condensing unit and air handling system. Inspected outdoor AC unit mounted on pad, checked manufacturer specifications, and examined condition of components. Replaced standard pleated air filter in interior air handler and inspected associated ductwork and connections.
Mount Washington, KY 40047
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What To Expect

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.