In terms of efficiency, how do dual-fuel systems perform in colder climates?

Dual-fuel systems are designed to optimize energy use by combining two different heating sources, typically an electric heat pump and a gas furnace. In colder climates, dual-fuel systems maximize performance and cost savings because they leverage the strengths of each heating method depending on outdoor temperatures.

When the weather is mild, the electric heat pump operates efficiently, providing heat at a lower operating cost. However, as temperatures drop, the heat pump becomes less efficient due to the reduced outdoor heat available for extraction. At this point, the system automatically switches to the gas furnace, which can deliver heat more effectively when the temperatures plummet. This combination allows for better comfort and efficiency throughout colder months, ensuring that homeowners save on energy costs while maintaining a comfortable indoor environment.

This performance adaptability is what makes dual-fuel systems particularly advantageous in colder climates compared to those that rely on a single source of heat, which might struggle to maintain efficiency during extremely low temperatures.