What Is a Dual Fuel System?
As the name suggests, a dual fuel system uses two energy sources to heat your home—electricity and natural gas. This combination provides greater efficiency and flexibility based on outdoor conditions and energy costs.
How Does It Work?
A standard air conditioning system relies on a compressor, condenser, and refrigerant to remove heat from inside your home. Here’s a simplified look at how it functions:
- A blower motor pushes air through your ductwork, pulling it in via return vents and distributing it through supply registers.
- This air moves across an evaporator coil filled with refrigerant. As air passes over the coil, the refrigerant absorbs heat from the air.
- The warmed refrigerant is pumped outside to the condenser unit, where the heat is released into the atmosphere.
- The cooled refrigerant is cycled back to the evaporator coil, and the process continues.
A dual fuel system can reverse this process when heating is needed. In heating mode, the system draws heat from the outside air—provided the temperature is above roughly 40°F—and transfers that warmth inside using the refrigerant. The blower and ducts then circulate the heated air throughout your home.
Why a Gas Furnace Is Still Necessary
When outdoor temperatures fall below 40°F, there’s not enough heat in the air for the heat pump to extract efficiently. At that point, your system automatically switches over to your gas furnace to ensure your home stays warm. With most modern systems, this transition is seamless and can be set manually or automatically through your thermostat.
Are There Benefits to Installing a Dual Fuel System?
Absolutely—especially for homeowners with solar power. A dual fuel setup allows you to heat and cool your home using electricity generated by your solar panels as long as the heat pump can draw warmth from the air.
Even without solar, there are numerous incentives to install a dual fuel system. Utility companies often provide rebates for upgrading to energy-efficient equipment. Federal tax credits and manufacturer rebates can further lower the cost, sometimes making a dual fuel installation even more affordable than a traditional system.
Interested in upgrading to a dual fuel system? Contact the team at Blue Best Plumbing, Heating, Air, & Generators. We stay up to date on all available rebates and incentives to help you save as much as possible. Call today to schedule a free consultation and learn more.
