What advantage does a dual-fuel heat pump provide?

A dual-fuel heat pump combines the efficiency of an electric heat pump with the power of a gas furnace, providing a significant advantage in terms of energy efficiency. During milder weather, the heat pump can efficiently extract heat from the outside air, utilizing less energy than a gas furnace. However, as outdoor temperatures drop, the heat pump's efficiency diminishes, making it less able to meet heating demands effectively. At this point, the system can seamlessly switch to the gas furnace, which performs better in colder conditions. This combination allows homeowners to optimize their heating based on current conditions, ensuring comfort and reducing energy costs over time.

This versatility is particularly beneficial in regions with fluctuating temperatures, as it allows for the most efficient heating source to be used at any given time. Options related to lower installation costs, reliance solely on electric power, or reduced maintenance do not directly address the efficiency benefits of utilizing both heating sources as effectively as dual-fuel systems do.