Heat Pump vs. Propane Heating: Which Costs Less to Run?
Propane is delivered and locally priced, while electricity is billed through a tariff. Compare the useful heat each system provides using current regional inputs. Include furnace or boiler efficiency, heat-pump seasonal performance, cold-weather backup, tank and service costs, and the electrical constraints of the property.
Use delivered propane cost
Record the price actually paid, delivery fees, annual use, equipment efficiency, and any tank rental or minimum service charge. EIA’s propane data provides US regional and seasonal context, not a universal or Canadian price. A single national number can conceal the rural delivery premium that controls the decision.
Estimate useful heat from propane, then model electricity for the proposed heat pump. Use performance data for the actual equipment and climate. Do not compare a propane gallon directly with a kilowatt-hour or assume the heat pump will never use backup heat.
Include rural constraints
Remote properties can face longer contractor travel, equipment delivery, utility-service limitations, and fewer repair options. These may change installed cost or make a dual-fuel plan more practical. Tank ownership and supplier contracts also affect the cost of going all-electric; operating savings do not automatically remove exit obligations.
Scenario model
- Favorable electric case: high delivered propane cost, moderate electricity price, good heat-pump performance, and minimal backup.
- Close case: similar delivered cost after efficiency, with tank service and capital cost deciding the horizon.
- Difficult case: high winter electricity cost, frequent backup, constrained service, or a large electrical project.
Use separate US and Canadian rates and date every input. Run the result again if the household retains propane for water heating or a generator.
Beyond the utility bill
Add conversion equipment, electrical capacity, distribution changes, tank and line treatment, restoration, financing, and current incentives if eligible. A heat pump may lower annual heating cost but still have a long capital recovery period. A planned tank or heating replacement can alter that balance.
Ask the contractor to state the design load, low-temperature performance, backup control, proposed capacity, and tank responsibility. The economically stronger choice is the one that meets the property’s load with acceptable installed and ownership costs, not the one with the cheapest isolated fuel unit.
A delivered-cost worksheet
Record propane price per delivery, fees, annual use, system efficiency, electricity tariff, heat-pump performance, backup use, and fixed tank or service charges. Convert both systems to useful heat before comparison. Use the same weather and load assumption for both. The model should show a date because delivered propane and electricity rates change.
Account for a changing propane relationship
If the heat pump replaces only space heating, propane may remain for water heating or cooking and the tank and delivery relationship continues. If all propane loads disappear, the household may face pickup, cancellation, residual-fuel, or removal questions. Ask for those costs separately from heating savings.
Run a case in which electricity is expensive during the coldest hours and a case in which propane delivery rises. If the preferred result reverses easily, choose based on capacity, backup, maintenance, and ownership horizon as well as the bill. This matters most for remote homes with fewer emergency service options.
Check the complete quote
Compare the heat pump, electrical capacity, controls, distribution, tank, service, and restoration scope before declaring a fuel winner. If the electric path needs a utility upgrade or the propane path retains a fixed delivery obligation, those costs belong beside the annual bill.
Sensitivity and decision threshold
If the heat pump is cheaper to run only under an optimistic rate or performance assumption, treat that as a sensitive result. Retain propane when backup, limited service, or fuel flexibility has real value; favor all-electric when the complete conversion is already being done and the remaining service cost is material. Document the assumption that would change the choice.
When dual fuel is sensible
Retaining propane may reduce electrical-capacity work or provide backup while the house is improved. It also retains tank, delivery, maintenance, and fixed-service costs. Going all-electric may simplify the home but require capacity, tank retirement, and cold-weather backup. Compare those complete paths over the ownership horizon rather than using the first month’s bill.