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
Performed annual maintenance on Lennox HVAC system installed 7/30/25. Addressed error codes 351 and 38, completed software updates, and replaced 20x25x5 filter. Verified remote diagnostic features were properly enabled on thermostat to ensure dealer support access for future maintenance needs.
Performed follow-up inspection on previously reported issue with ice formation in inducer. Discovered significant corrosion and buildup in exhaust pipes requiring removal for inspection. Documented condition of severely restricted pipes showing extensive mineral deposits that were impeding proper airflow and contributing to inducer icing problem.
Performed diagnostic assessment on 5-7 year old furnace system responding to customer concerns. Opened access panel to inspect circuit board and electrical connections, utilizing clamp meter to test wiring integrity and component functionality. System was operational during visit with adequate airflow through vents, and no immediate critical issues were identified requiring repair.
Performed annual maintenance on dual HVAC systems installed in 2025. Replaced gas valve and pressure switch on one unit while documenting circuit board condition with photos. Noted that additional parts are on order with Joe T. Both systems are Platinum Level with filter sizes 16x25x4 and 16x25x5. This was the first maintenance visit of the year; renewal not required at this time.
Conducted comprehensive evaluation of existing HVAC system for Mr. Bentley who requested replacement options. Assessed current unit location and examined alternative placement on west side of residence as requested by customer. Documented site conditions including mounting surface and exterior perimeter to evaluate feasibility of both installation scenarios.
Completed annual planned maintenance on 8-month-old HVAC system. Replaced 20" x 20" x 5" filter, inspected thermostat functionality (confirmed 71° temperature reading), and discussed customer's request for additional sensors and duct sealing. System is functioning properly; renewed maintenance agreement for continued service.
Performed quarterly maintenance service on Lennox HVAC system. Inspected and replaced 20x20x5 air filter. Temperature readings at return vent registered 72.2°F, aligning with thermostat setting. Noted significant dust accumulation on return air vent requiring attention during next scheduled maintenance.
Performed scheduled 6-month maintenance service on HVAC system. Replaced 20x20x5 filter during this first maintenance visit. Inspected control board for proper connections and verified system level mounting to ensure optimal operation.
Conducted inspection of an aging Kenmore electric water heater installed in basement utility area. Evaluated unit condition, existing plumbing connections (copper and PVC), and electrical components for potential replacement. Provided homeowner with comparative options for both tank and tankless electric models based on cost-efficiency requirements.
Completed 6-month maintenance service on HVAC system. Replaced 20x20x5 air filter as part of first scheduled visit. Inspected control board functionality and verified all system diagnostics through the Lennox thermostat interface, confirming Remote Sharing, Alerts/Notifications, and Advanced Diagnostics features were properly enabled for remote monitoring capabilities.
Conducted a comprehensive inspection of customer's aging 40-gallon Richmond gas water heater. Identified significant oxidation and discoloration on the copper ventilation pipe, showing signs of wear and potential future failure points. Provided estimate for replacement options to address both current deterioration and improve system efficiency. Customer works nights; follow-up scheduled for Tuesday morning or early Wednesday.
Conducted free second opinion service for customer concerned about previous HVAC company's recommendation to replace entire 22-year-old system due to "2 burnt wires." Upon inspection of electrical panel and control board wiring, determined the no-heat issue did not require full system replacement. Educated homeowner on repair options and financing alternatives for when replacement becomes necessary.
Performed annual planned maintenance on HVAC system installed 6/13/25. Inspected indoor air handler with P-trap drainage configuration and outdoor condensing unit mounted on concrete block base. Checked and confirmed proper operation of condensate drainage system including PVC piping and connections. System has 16x25x5 filter size; customer not renewing maintenance agreement at this time.
Performed HVAC system replacement consultation for a non-operational system. Inspected existing Carrier furnace/air handler with associated ductwork, gas line connections, and ventilation pipes. Evaluated current Carrier Infinity thermostat functionality, noting system was set to heat pump mode. Client was present during assessment and confirmed desire for complete system replacement.
