Dual-fuel Systems
Dual-fuel Systems | HVAC Unit Replacement | Heating and Air Conditioning | Apison
Apison’s weather loves to keep you guessing, but HEP’s dual-fuel systems keep you consistently comfortable. By pairing an efficient electric heat pump with the power of a gas furnace, the setup automatically chooses the most economical energy source for the moment—saving you money while shrinking your carbon footprint. Whether the forecast calls for frosty mornings or steamy afternoons, you’ll enjoy whisper-quiet operation, balanced humidity, and air that feels just right every day of the year.
When it’s time for an HVAC unit replacement, trust the local team that’s been serving Apison homeowners for decades. HEP’s certified technicians size your new equipment precisely, handle the swap-out in a single visit, and back their work with rock-solid warranties and 24/7 emergency support. Flexible financing, transparent pricing, and courteous clean-up mean the only thing you’ll notice is the immediate boost in comfort and efficiency. Call today and feel the HEP difference tomorrow.
FAQs
What is a dual-fuel HVAC system and how does it work?
A dual-fuel system pairs an electric heat pump with a high-efficiency gas furnace in a single integrated unit. In mild weather the heat pump heats (and cools) your home using inexpensive electricity. When outdoor temperatures drop to a pre-set "balance point"—usually around 35-40 °F in Apison—the system automatically switches to the gas furnace for stronger, more reliable heat. The result is year-round comfort, lower utility bills, and reduced carbon emissions compared with a conventional electric or all-gas system.
When should I consider replacing my existing HVAC equipment with a dual-fuel system in Apison?
Replacement is worth considering if your current heat pump or furnace is 10–15 years old, you face frequent repairs, or your winter gas and summer electric bills keep climbing. Apison’s climate features hot, humid summers and occasional sub-freezing winter nights—ideal for a dual-fuel setup that maximizes a heat pump’s efficiency most of the year while retaining gas backup for cold snaps. A professional load calculation and cost-of-ownership comparison can confirm whether a new dual-fuel system will pay for itself through energy savings and local incentives.
How is the correct size of a dual-fuel unit determined for my home?
Sizing is not based on the square footage alone. Our technicians perform a Manual J load calculation that factors in Apison’s design temperatures, your home’s insulation levels, window types, air-leakage rate, occupancy, and even appliance heat gains. The goal is to match the heat pump’s capacity for cooling and moderate heating, and the furnace’s capacity for peak-cold heating, without oversizing. Proper sizing ensures higher comfort, lower operating costs, quieter operation, and longer equipment life.
What is involved in the replacement process and how long will it take?
Most residential dual-fuel replacements are completed in one to two days. Day 1 involves safely recovering refrigerant, removing the old outdoor unit and indoor air handler/furnace, inspecting or replacing ductwork, and setting the new dual-fuel equipment. Day 2 is devoted to brazing and pressure testing the refrigerant lines, evacuating and charging the system, wiring the thermostat with dual-fuel controls, and running a full start-up checklist. Our crew protects floors, cleans the work area, and walks you through the new thermostat settings before we leave.
What energy savings and incentives can Apison homeowners expect?
Because the heat pump covers 70-90 % of the annual heating hours at 2–3 times the efficiency of gas, homeowners often see 20–40 % lower total energy costs. TVA and local utility companies frequently offer rebates (currently $150–$400) for high-SEER2 / HSPF2 heat pumps and 95 %+ AFUE furnaces. You may also qualify for up to a $2,000 federal tax credit under the Inflation Reduction Act when the system meets tier-2 efficiency levels. We’ll file all paperwork and provide documentation so you capture every available incentive.
How much maintenance will my new dual-fuel system need and how long will it last?
Plan on two professional tune-ups per year—one in spring for the cooling/heat-pump portion and one in fall for the gas furnace. During each visit we check refrigerant charge, clean coils, test defrost controls, inspect burners and heat exchanger, replace filters, and verify the changeover thermostat settings. With regular maintenance, a quality dual-fuel system should last 15–20 years for the heat pump section and 20-25 years for the gas furnace. Most manufacturers include 10-year parts warranties and we offer optional labor-coverage plans for added peace of mind.