Air source heat pumps transfer heat, either from the outside air into a building (heating) or from the building into the outside air (cooling). Their effectiveness in heating decreases as the outdoor temperature drops. At a certain low temperature, the heat pump’s capacity to extract heat from the outside air becomes insufficient to meet the building’s heating demands, necessitating supplemental warmth.
Relying solely on the heat pump in extremely cold climates could lead to occupant discomfort and potentially strain the system, shortening its lifespan. The inclusion of a backup heating element ensures consistent indoor temperatures are maintained, regardless of external weather conditions. This integrated approach enhances the overall reliability and user satisfaction associated with heat pump systems.
