A dual-energy heating system uses two energy sources: electricity and a fuel, usually oil.
The fuel is used as an auxiliary energy source of heat instead of electricity when it is really cold, which is when Hydro-Québec’ power grid is under the greatest pressure.
Most commonly used heating systems that qualify for Rate DT:
Dual-energy forced-air systems of the following types:
Dual-energy forced-air system, a fuel-burning system with built-in electric heating elements
Fuel-burning forced-air system combined with a central heat pump
Fuel-burning forced-air system combined with electric heating elements
Dual-energy hot-water systems (with radiators, for example), combining a fuel-burning boiler and an electric boiler (boilers are often called furnaces).