Heat Pump vs. Gas in Canada: Regional Costs and a Retained Gas Connection

A heat pump can cost less to operate than a gas furnace in one Canadian home and more in another. Climate and heating demand, gas and electricity prices, seasonal equipment performance, supplemental heat, and the home’s gas-service choices all affect the comparison. A national average or an old modeled scenario cannot predict a current household bill; the useful approach combines local bills with an explicit system boundary.

Make the service and rate comparison local

Use a full year of electricity and gas bills, separating space heat from water heating, cooking, and other appliances where possible. Identify the gas utility and tariff, the electricity plan, seasonal or time-based pricing, delivery charges, taxes, credits, and any rate changes over the billing period. Provinces and utilities do not share one heat-pump electricity rate or one natural-gas commodity price. A posted energy price is not necessarily the full household bill.

Estimate the home’s annual useful heat and compare the systems against that same demand. For the furnace, use fuel input and a seasonal efficiency estimate. For the heat pump, use seasonal electricity that reflects local winter conditions and any resistance or fossil-fuel backup. A cold-climate product rating is not the home’s seasonal bill estimate. Ask for sizing and design assumptions that match the house, including planned insulation or air-sealing work, distribution, and the outdoor temperatures at which backup may operate. NRCan’s homeowner guidance emphasizes proper selection, sizing, and installation; a comparison based on an unsuitable design can misstate both energy use and cost.

Ask whether gas service will remain

Model at least two clear cases if the project could leave gas in place: one where the furnace is removed and the gas account closes, and one where gas stays for a water heater, cooking, fireplace, or backup. The amount saved by eliminating gas includes only charges that the account actually stops paying. If the connection remains, a fixed charge may continue even when the furnace uses much less fuel. Conversely, do not count the full gas bill as furnace cost if the meter serves other appliances.

A hybrid system can use the heat pump for some conditions and a furnace for others. The dispatch point depends on outdoor temperature, heat-pump capacity and performance, fuel and electricity prices, comfort needs, and controls. Ask the designer for the expected share of annual heat from each source and the basis for the switchover setting. A program or emissions target is not automatically the household’s lowest-cost setting.

Use national studies as scenarios, not forecasts

Natural Resources Canada’s published cost-effectiveness study compares modeled homes and locations. Its high-level findings report lower operating cost than electric resistance or oil in the studied regions, while low natural-gas prices made heat-pump costs more comparable to gas. The modeled split gas/electric service cases also show that retaining gas charges can change the result in some regions. These are study scenarios tied to their homes, system assumptions, and dated energy-price inputs. They are not current provincial rate quotes or a prediction for a particular house.

Use such a study to identify the questions that matter, then replace its assumptions with the current home’s bills, current local tariffs, expected seasonal use, and actual project quotes. A modeled comparison cannot account for every utility plan, home envelope, occupant schedule, incentive, or installation detail. Keep installed cost, maintenance, and financing separate from annual operating cost, and verify any incentive against current program eligibility before counting it.

Build a range and prepare the quote questions

Run low, central, and high cases for heating demand, heat-pump seasonal performance, backup use, electricity and gas prices, and any charges expected to disappear. If the gas connection decision or rate plan changes, calculate each case separately. If outcomes vary from lower to higher heat-pump operating cost, report that sensitivity rather than forcing one national conclusion.

Before accepting a proposal, request the heat-loss basis, equipment sizing, expected annual electricity and gas use, backup assumptions, controls, and the charges included in the estimate. Check that both options provide the same rooms, hot water, and comfort. For a step-by-step comparison of fuel units and seasonal performance, see the cross-fuel guide; for an Ontario-specific bill method, see the Ontario comparison.