Dual Fuel Heating — Why Keep Your Gas Furnace with a Heat Pump?
Published: July 23, 2026 — BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning — Greater Vancouver, BC
Why Go Dual Fuel?
A dual-fuel system (heat pump + gas furnace) offers: the best of both technologies — heat pump for efficient heating 90% of the time, gas furnace for powerful heat during extreme cold. No need for electric backup heat strips (which are expensive to run). If the heat pump fails, the furnace still works — you always have backup heat.
Cost Considerations
Dual-fuel upfront cost: $6,000-10,000 (heat pump added to existing furnace). Full heat pump replacement (with electric backup): $8,000-14,000. The existing furnace can be reused, saving $3,000-6,000. Operating costs: the heat pump runs 90% of the time, the furnace runs 10% during the coldest days. Overall, dual-fuel costs slightly less to operate than a heat pump with electric backup.
Ideal Dual-Fuel Candidates
Dual fuel is best for: homes with a relatively new gas furnace (under 10 years old), homeowners who want maximum efficiency without sacrificing performance during extreme cold, and those who want the security of having a backup heat source. If your furnace is over 15 years old, full conversion to a heat pump may be more economical.