Since 1975, the A+ Derr Heating & Cooling professionals have been helping homeowners in Henderson, KY, with their HVAC services. As a 4th generation business, we’re committed to delivering superior quality work and customer service.
We want you to be comfortable in your home. That’s why we offer 24/7 emergency service. We also have a 100% satisfaction guarantee. If you’re unhappy with a product we installed after the 1st year, we’ll buy it back.
Get the best HVAC services in Henderson. Call A+ Derr at 833-232-4328 or contact us online to schedule an appointment today!
Our Heating Services
You need a hardworking and reliable heating system to stay warm during our cold Henderson winters. For expert heating system services, choose A+ Derr. Our experienced professionals can help you with any problem – from minor repairs to major fixes. Our heating services include installation, replacement, repair, and maintenance.
Our trained and experienced professionals are ready to help you maintain your equipment and heating system units. We service:
- Furnaces
- Boilers
- Heat pumps
- Geothermal units
- Packaged units
Air Conditioning Services
You count on your air conditioning system during the long summer months to keep you cool. At A+ Derr, our courteous and reliable technicians can help you keep your air conditioning system working properly. From ductless mini-splits to central air conditioning, we offer a comprehensive list of services to keep you and your family out of the summer heat in Henderson.
Our AC services include:
Schedule your heating system appointment today by calling A+ Derr at 833-232-4328 or contacting us online!
Signs You Need HVAC Service
It can help homeowners to know when their HVAC system isn’t working correctly. Here are some common signs that it’s time to call for trustworthy HVAC services. Common signs include:
- Strange noises If your HVAC system is making weird sounds like rattling, grinding, or squealing, it could mean that there is a worn or loose part that needs to be replaced or adjusted.
- Unusual odors If your HVAC system is giving off strange smells, there could be a buildup of dirt, dirt, or mold in the system or ducts.
- Inadequate heating or cooling If your HVAC system isn’t heating or cooling properly, you may have a clogged air filter, blocked ductwork, or a malfunctioning component.
- High energy bills Climbing energy bills are a sign your HVAC system isn’t running efficiently.
- Short-cycling: Short-cycling is when your system frequently turns on and off. This can happen from a malfunctioning thermostat, a clogged air filter, or a problem with the system’s compressor or fan.
For expert HVAC services in Henderson, count on A+ Derr. Call us at 833-232-4328 or contact us online for a free estimate today!
Indoor Air Quality in Henderson
Make the air in your Henderson home as clean as possible with indoor air quality services from A+ Derr. With proper tools and techniques, like duct cleaning, we can help you reduce the dust, allergens, bacteria, and other irritants in your ductwork.
Other benefits of duct cleaning include:
- Improved HVAC efficiency:Â Clean air ducts offer fewer blocks for your HVAC system, making it easier to heat and cool your home. This can lead to lower energy bills and improved comfort.
- Reduced fire risk:Â The buildup of dust and debris in your air ducts can increase the fire risk. Regular duct cleaning can help reduce the risk of a fire hazard.
- Longer HVAC life span:Â Clean ducts can help extend the life of your HVAC system and help keep it running efficiently for longer.
Get clean indoor air with A+ Derr. Contact us today at 833-232-4328 or schedule online today!
Why Choose A+ Derr?
At A+ Derr, we understand how much you care about your Henderson home. That’s why we ensure our technicians are certified and ready to deliver exceptional customer service. We stand behind our work with a 100% satisfaction guarantee.
We’ll work with you to find the best HVAC solutions for your needs and budget. Plus, we offer our Maintenance Plan for added convenience and cost savings.
When you choose A+ Derr, you choose the local experts committed to providing you peace of mind. Let us help you keep your home comfortable and safe all year round.Count on A+ Derr for your HVAC services in Henderson. Call us at 833-232-4328 or contact us online today!
Frequently Asked Questions
When should I have my HVAC system serviced?
You should have your heating system serviced before the cooling season and your cooling system before the heating system. If you have a system that both heats and cools, like a heat pump, it is recommended that you get professional service between the heating and cooling seasons.
Is good indoor air quality important to your home?
In short, indoor air quality is far more polluted than outdoor quality. These pollutants include allergens, dirt, mold, and much more. These contaminants affect your family’s health and, sometimes, sleep. Installing an air cleaner, purifier, or scrubber can improve your home’s air quality.
How often should I change my system’s air filters?
Air filters should be replaced at least every 90 days. However, you should replace your filters more often if:
- You have more than two pets that shed fur
- Someone in your home has respiratory issues
- Your home is in an area that has more allergens
Recent Jobs and Reviews in Henderson, KY
Job Locations and Reviews
Responded to a no-heat call for an 11-year-old HVAC system that was completely non-operational with no airflow through vents. Inspection revealed a faulty control board, which was replaced to restore proper system functionality and heating capability.
Successfully installed a new 50-gallon electric water heater in basement utility area, including proper connection of supply lines and installation of expansion tank. Unit was securely positioned against concrete wall with all manufacturer specifications verified and safety protocols followed.
Completed 3-ton 19 SEER heat pump installation with air handler. System was properly configured with Lennox dealer support access enabled for remote diagnostics, and all operational parameters were verified during testing phase, including proper refrigerant pressures, temperature differentials, and airflow measurements.
Completed comprehensive assessment for crawlspace system replacement, including evaluation of severely corroded water heater with visible rust staining and aging HVAC equipment. Documented condition of existing ductwork and outdoor condenser unit to prepare detailed quote for complete system replacement with new ductwork and complimentary tankless water heater installation per promotional offer.
Inspected 120-year-old home's water heater system exhibiting active leakage. Observed significant corrosion and deterioration at the top of the tank with compromised connections to both the PVC vent pipe and copper supply lines. Replaced failed water heater unit, ensuring proper installation of all plumbing connections and verification of system functionality.
Completed planned annual Platinum Level maintenance on Lennox HVAC system (installed 11/18/25). Performed comprehensive inspection of furnace components including blower assembly, control board, and electrical connections. Verified proper drainage system operation with P-trap configuration and checked system level. Replaced 16x25x5 filter and documented system condition with photos for service record.
Performed annual planned maintenance on HVAC system (installed 8/20/25). Inspected control board circuitry and verified proper electrical connections with no visible damage or deterioration. Checked system leveling using Kobalt level tool and examined PVC condensate lines for proper drainage. All components functioning normally; no replacement needed for 16x25x5 filters at this time. Documentation completed with supporting photos of control system and plumbing components.
Completed annual Gold Level maintenance on 5-month-old HVAC system. Performed comprehensive electrical diagnostics using digital multimeter, confirming proper voltage readings (24.85V and 24.66V) at control terminals. Inspected and verified integrity of all electrical connections, wiring, and refrigerant lines.
Returned to site to complete drain installation that was pending from previous visit. Accessed the air handler enclosure, inspected the condensate drain system, and properly connected the PVC drain line to the unit. Verified proper routing of the drain line through the insulated wall cavity and ensured secure mounting of all components to prevent future issues.
Performed annual planned maintenance on HVAC system (installed 8/8/25). Conducted temperature measurements with digital thermometer showing 26.5°C and verified system pressure readings of 338 on both P1 and P2 ports using dual port manometer. System is operating within manufacturer specifications with no filter replacements required at this time.
Conducted follow-up site visit to address previously identified lineset leak. Performed visual inspection and documented current conditions with photographs. Repair work was not completed at this time due to ongoing interior renovation/painting work in the area requiring access to the refrigerant lines.
Successfully installed a complete Lennox HVAC system including outdoor AC unit mounted on concrete pad with proper PVC exhaust piping and electrical connections. Interior components include new Lennox furnace and associated ductwork installed in utility closet alongside existing water heater, with all systems tested and functioning properly.
Completed planned maintenance service on 1-year-old HVAC system (second annual visit). Replaced 20x20x5 filters and inspected outdoor unit which is properly installed on concrete pad with appropriate drainage lines. Maintenance agreement renewed for continued system protection.
Responded to service call for thermostat issues where system would not shut off. Upon inspection of the ductwork and structural components in the crawlspace, identified loose connections in the metal ductwork junction points which were affecting system operation. Sealed connection points with metal tape and verified proper system cycling after repair.
Performed semi-annual maintenance service on the HVAC system, replacing the 17x21x5 air filter. Conducted level check on system components and inspected outdoor condenser unit. All equipment functioning properly with no issues identified.
Performed comprehensive inspection of HVAC system and identified a cracked heat exchanger requiring full system replacement. Documented existing installation conditions including the furnace cabinet and associated plumbing connections with water shutoff valve. Customer advised that repair options are not viable due to safety concerns with the compromised heat exchanger.
Completed annual maintenance service on Trane HVAC system (installed 1/28/25) during second scheduled visit. Replaced 20x20x5 filters, inspected both indoor furnace unit and outdoor condenser, and verified proper system operation. Customer opted to renew maintenance agreement for continued service coverage.
Performed Platinum Level maintenance service on dual HVAC systems, both approximately 2 years old. Inspected and verified proper operation of both units, including the furnace with PVC ventilation components and associated ductwork. Checked thermostat functionality, confirming proper temperature display and heating setpoint control.
Diagnosed and repaired an intermittent heating issue on a 7-year-old Amana furnace. Identified a faulty low pressure switch that was periodically sticking in the open position, preventing consistent operation. Replaced defective pressure switch and verified proper system operation with the furnace now maintaining set temperature.
Inspected customer's HVAC system and identified high limit switch requiring replacement. Accessed furnace in utility room, documented model/serial numbers, and photographed the component for accurate part ordering. System currently operational but flagged with yellow priority for timely replacement of the high limit component.
