Air source heat pumps are systems with two distinct parts. The outdoor unit transfers energy from the air via refrigerant to heat or cool a space using air handler equipment with a coil. The second part is a backup heating source that uses gas or electricity.
On Vancouver Island, the SEER (Seasonal Energy Efficiency Ratio, the rating to measure efficiency of cooling) often overshadows the HSPF (Heating Seasonal Performance Factor, the rating to measure efficiency of heating). Even though the heating mode is used much more often, be sure to know both ratings on all comparable equipment.
Not all systems are candidates for a heat pump—feel free to contact us for an in-home assessment.