With the rapidly changing weather, you rely on your HVAC system to keep your home comfortable. If your HVAC system malfunctions, your home will quickly become uncomfortable. That’s where the team at A+ Derr Heating & Cooling steps in. Our team has serviced Kentuckiana-area homes for over 45 years.
To get reliable HVAC service in Kentuckiana, call 833-232-4328.
Dependable Air Conditioning
The sweltering heat is enough to drive anyone inside your home for comfort. However, if your AC goes out during a heat wave, you lose your comfort and put yourself at risk for health issues. This is why A+ Derr offers a comprehensive set of AC services.
Our AC services include the following:
- Air conditioning repair: If you’ve noticed a decline in performance or strange noises in your system, it’s time to schedule a repair appointment.
- Air conditioning replacement and installation: Our team can assist in the replacement and installation process if your old system has given out or you’re looking to upgrade.
- Air conditioning maintenance: To get the most out of your AC unit, you need to conduct annual maintenance. One maintenance appointment can go a long way in extending the life span of your AC unit.
On top of central AC units, our team also services ductless mini-split systems. The ductless mini-split is an excellent alternative to a central AC unit as it can work as a heating and cooling system.
Top-Rated Heating
Just like the cold snaps in Owensboro can be brutal. When the cold weather hits, you want to be able to relax in your cozy home. Our heating services include the following:
- Heating repair: Leaking systems or higher energy usage indicate that your heating system needs a repair appointment.
- Heating maintenance: To ensure that your heating system runs efficiently year-round, scheduling an annual maintenance appointment is the best solution.
- Heating installation and replacement: As a Lennox Premier Dealer, you can trust our team to handle installation and replacement appointments with high quality.
Our heating services apply to a variety of systems. Specifically, our team has heat pump and furnace services to help as many Owensboro residents as possible. Don’t let the cold take over your Owensboro home. Find the time for A+ Derr to repair or replace your heating system by calling 833-232-4328.Â
Indoor Air Quality Solutions
One of the most important parts of HVAC service is the indoor air quality section. Our indoor air quality services are designed to keep the air in your home clean and your health in good standing with various services, including duct cleaning, air purifiers, and humidity control.Interested in how indoor air quality solutions can improve your Owensboro home? Call 833-232-4328 to schedule an appointment with A+ Derr.
Why Choose A+ Derr?
Dating back to 1975, our team has worked hard to provide every customer with a great experience when using A+ Derr Heating & Cooling. Along with our glowing reviews, we have financing options to take the stress out of the HVAC service process.To schedule HVAC services for your Owensboro, KY, home, call 833-232-4328.
HVAC FAQs
Why is my AC running but not cooling?
It is a clear sign that a part in the AC unit has broken. One common issue is a broken or clogged condenser coil.
How long do furnaces last?
Furnaces are built to last, as you can expect to get 15 to 20 years out of your furnace before signs of aging show. Annual maintenance can extend the life span of your system.
Recent Jobs and Reviews in Owensboro, KY
Job Locations and Reviews
Responded to no-heat call for 8-year-old system. Diagnosed ignition failure causing system to blow cold air. Corrected ignition sequence issue and restored proper heating function, confirming operation with thermostat set to 70°F. System now maintaining desired temperature.
Responded to callback for system with intermittent operation issues previously serviced one month ago. Upon inspection, found control board exhibiting red flickering light and failure to maintain continuous operation. Diagnosed faulty Emerson circuit board (59-522 REV.002) with compromised electronic components. Replaced control board and verified proper system operation with stable ignition sequence and normal runtime performance.
Successfully installed a State ProLine 40-gallon gas water heater (57 1/2" height, 21" width) with copper piping connections in utility closet. Installation included proper venting with galvanized steel ductwork and mounting of expansion tank. Unit comes with manufacturer warranty of 6 years on parts and 1 year on labor.
Responded to service call for 6-month-old HVAC system producing squealing noise and insufficient heating. System was operational but delivering minimal airflow with home temperature at 64°F despite thermostat setting of 70°F. Diagnostic evaluation performed and necessary adjustments made to restore proper system function.
Performed annual maintenance on 5-month-old Platinum Level HVAC system. Inspected and replaced 16X25X5 filter. Examined blower wheel assembly and internal components including electrical connections, circuit board, and PVC piping. System functioning properly after service.
Completed scheduled second annual maintenance visit on 6-year-old HVAC system. Replaced 20x20x5 filters, inspected Lennox outdoor unit including internal components and electrical connections, and verified proper operation of Honeywell digital thermostat. System is functioning correctly; customer advised that service agreement renewal is due.
Completed planned maintenance on residential HVAC system. Replaced 16x25x5 air filter (first service in 4 years), inspected thermostat operation, and performed comprehensive furnace inspection including electrical components testing with multimeter. System is now operating within normal parameters.
Completed follow-up service visit to inspect thermostat wiring and control panel connections as requested. Examined backplate wiring connections and circuit board integrity, documenting current configuration with photos for technician Nick B. Referred documentation to Joe for review of video assessment.
Conducted a mini-split system addition estimate for client's property currently under construction. Inspected framing area with exposed insulation to determine optimal unit placement. Evaluated exterior wall conditions for potential condenser location, noting adequate clearance and proper drainage considerations with existing snow conditions.
Completed installation of a 20K BTU mini-split system with dehumidification capability on residential property. Mounted outdoor condenser unit on exterior wall with proper elevation above ground level, installed line set with protective PVC covering, and connected electrical components including disconnect box. Indoor air handler was successfully mounted and all connections were completed according to manufacturer specifications.
Conducted comprehensive HVAC replacement estimate for residential property (1000 sq ft home). Assessed existing system and evaluated requirements for new gas furnace and AC installation. Documented interior conditions including utility access points and existing fixture placement to determine optimal equipment positioning.
Conducted comprehensive assessment of existing 40-gallon electric water heater located in utility closet. Evaluated current installation conditions, noting available gas service in home that could be utilized for potential replacement options. Discussed both tank and tankless replacement options with customer, accommodating their 3rd shift work schedule requirements.
Conducted annual maintenance on residential heating system installed in 2025. Checked thermostat operation (Honeywell Home) which was set to 71°F in heat mode with system actively running at time of service. Temperature readings with UEi PDTCO pocket thermometer confirmed proper system operation at 55°F. Inspected and noted filter size as 16x25x5.
Performed scheduled maintenance flush on State ProLine tanked water heater to remove sediment buildup and improve efficiency. Inspected associated components including expansion tank and copper supply lines, confirming proper operation post-service. System returned to service with normal operation verified.
Completed annual planned maintenance on HVAC system installed 6/2/25. Performed comprehensive temperature diagnostics, measuring supply air temperature (135.6°F) and return air temperature at evaporator coil (66.3°F), confirming proper thermal differential. Inspected and verified all components functioning within normal operating parameters.
Conducted exterior assessment of existing LG heat pump system during winter conditions. Documented current installation configuration including refrigerant line routing, PVC condensate drainage, and wall penetration. Evaluated equipment for potential replacement, noting current placement considerations and existing line set pathways through vinyl siding exterior.
Successfully installed a 150-gallon tankless water heater in utility closet, completing all necessary copper and PVC pipe connections. Mounted unit securely to wall and verified proper operation of all systems before completing service.
Successfully installed a complete Lennox 2-ton, 18 SEER system with a 99% efficient furnace and 14" return. Configured dealer support features on the digital thermostat including Remote Sharing, Alerts and Notifications, and Advanced Diagnostics to enable proactive system monitoring and maintenance.
Responded to follow-up service request to configure WiFi connectivity for customer's generator system. Successfully established connection to customer's wireless network as requested by Nick B., with the Evolution 2.0 control panel displaying confirmed WiFi signal strength of 18%.
Conducted follow-up site visit to inspect previously installed Generac transfer switch system. Verified proper mounting of transfer switch on exterior wall adjacent to electrical meter enclosure. Took measurements to ensure compliance with installation specifications and documented current condition with photos. No immediate issues requiring correction were identified with the electrical transfer components.
