A propane furnace costs $2,200 to $5,700 installed for a standard-efficiency unit, with a published national average of $3,900, per HomeGuide (December 2025)1. Angi and HomeAdvisor both publish an installation average of $4,500 with most homeowners spending $3,900 to $6,00023 — the two are corporate siblings, and matching figures alone don’t establish independent corroboration. The labels differ: HomeGuide’s headline is standard-efficiency scope, and it puts high-efficiency systems at $3,500 to $7,400 installed1. Figures below are the latest published data from each source.
Cost by furnace type
Angi and HomeAdvisor publish identical type tables — corporate siblings, and matching figures alone don’t establish independent corroboration23:
| Furnace type | Unit cost (both) | Installation cost (both) |
|---|---|---|
| Single-stage | $1,200–$2,300 | $700–$1,200 |
| Two-stage | $1,600–$2,800 | $900–$1,400 |
| Modulating | $2,300–$3,800 | $1,200–$1,700 |
Cost by size
Angi and HomeAdvisor publish the same all-in size table23:
| Furnace size (BTU) | Home size (sq ft) | Average cost, all-in (both) |
|---|---|---|
| 40,000–60,000 | Up to 1,200 | $2,000–$3,500 |
| 60,000–80,000 | 1,200–2,000 | $3,000–$5,000 |
| 80,000–120,000 | 2,000–3,500 | $4,000–$7,500 |
HomeGuide’s table splits unit and total replacement by home size, tank excluded1:
| Home size (sq ft) | Unit cost (HomeGuide) | Total replacement (HomeGuide) |
|---|---|---|
| 1,300–1,600 | $600–$2,200 | $2,000–$5,700 |
| 1,600–1,900 | $650–$2,400 | $2,050–$5,900 |
| 1,900–2,200 | $700–$2,500 | $2,100–$6,000 |
| 2,200–2,600 | $800–$2,700 | $2,200–$6,200 |
| 2,600–3,200 | $900–$2,800 | $2,300–$6,300 |
By capacity, HomeGuide puts a 60,000- to 100,000-BTU propane furnace at $1,900 to $6,200 installed for an average 2,000-square-foot home1.
Efficiency tiers
HomeGuide prices standard-efficiency units (80% to 89% AFUE) at $600 to $1,900 and high-efficiency units (90% to 99% AFUE) at $900 to $3,300, unit only1. HomeAdvisor labels the standard tier 80% to 90% AFUE and the high tier 90% to 99%3 — a small labeling difference, presented as published. HomeGuide adds that a high-efficiency unit may be eligible for an Energy Star federal tax credit of up to $300 — its own note, attributed1.
Labor
HomeGuide puts installation labor at $1,000 to $2,300 for standard-efficiency units and $1,300 to $3,100 for high-efficiency models, over 5 to 10 hours at $75 to $150 per hour plus $30 to $50 per assistant1. Angi and HomeAdvisor both publish $1,000 to $3,100 as a flat project fee at the same $75 to $150 hourly rate23, with HomeAdvisor estimating 10 to 20 hours of work — against HomeGuide’s 5 to 10, presented as published13.
Propane tank costs
HomeGuide prices buying and installing a tank at $1,700 to $4,300 on average — $1,700 to $3,500 installed for 250 gallons, $2,100 to $4,300 for 500, and $3,000 to $6,000 for 1,000 — against HomeAdvisor’s $600 to $2,500 for tank installation, presented as published13. Renting runs $50 to $200 per year on HomeGuide, with removal of an old tank at $500 to $1,000, tank-to-furnace line connection at $350 to $2,000 or $15 to $50+ per linear foot, and the furnace line itself at $75 to $1001.
Operating and maintenance costs
HomeGuide puts heating with propane at $90 to $200 per month or $1,000 to $2,500 per year, with propane at $2.00 to $2.50 per gallon and most homes using 500 to 1,000 gallons a year1. Angi publishes the same annual total of $1,000 to $2,500 but from different inputs: $2.50 to $3.50 per gallon and 500 to 1,200 gallons per heating season — the per-gallon figures diverge, presented as published2. A professional tune-up costs $100 to $300 per year on both Angi and HomeAdvisor23. Common repair line items on Angi: igniter $150 to $400, blower motor $400 to $800, heat exchanger $600 to $2,0002.
Add-ons and related work
HomeGuide’s line items: new ductwork $2,400 to $6,600, replacing old ductwork $1,400 to $5,600, duct cleaning $300 to $700, condensation drain $200 to $600, old furnace removal and disposal $150 to $400, thermostat replacement $140 to $350, electrical connections to furnace controls $140 to $450, and chimney liner $900 to $3,8001. Angi adds delivery at $50 to $300 and haul-away of the old unit at $50 to $200 — a narrower figure than HomeGuide’s $150 to $400 removal line, with different labels, presented as published2. Installing a propane furnace together with new ductwork runs $4,600 to $12,300 on HomeGuide1.
Converting from another fuel
HomeGuide prices conversions by starting fuel, with totals depending on whether the tank is rented or bought1:
| Conversion | Renting tank (HomeGuide) | Buying tank (HomeGuide) |
|---|---|---|
| Electric to propane | $2,000–$5,700 | $3,700–$9,800 |
| Natural gas to propane | $275–$800 | $1,900–$4,900 |
| Fuel oil to propane | $2,400–$9,200 | $4,000–$13,300 |
HomeGuide’s table lists natural-gas-to-propane conversion as the lowest-cost route among these examples; its text describes conversion with a $150 to $500 kit1. See our gas furnace, electric furnace and oil furnace cost guides for the other fuels.
Sizing and lifespan
HomeGuide sizes propane furnaces at 20 to 60 BTUs per square foot depending on climate zone1. On lifespan, HomeGuide publishes 15 to 20 years for the furnace and 20 to 30 for the tank1; HomeAdvisor likewise puts the furnace at 15 to 20 years, adding that some units run far longer with regular maintenance — attributed3.
Permits
Permit requirements and fees vary by municipality, so confirm with your local building authority; contractors typically handle the paperwork. For budgeting, HomeGuide prices propane furnace permits and inspections at $250 to $1,500, plus $50 to $350 for electrical permits, $25 to $75 for tank permits, and $50 to $200 for gas line permits1.
Related cost guides
Start with furnace replacement cost, then compare gas furnace cost, electric furnace cost, oil furnace cost and heat pump cost.
The bottom line
Budget $2,200 to $5,700 for a standard propane furnace installed on HomeGuide’s figures, or $3,900 to $6,000 on the range Angi and HomeAdvisor both publish, and budget the tank decision separately: buy at $1,700 to $4,300 or rent at $50 to $200 a year on HomeGuide’s numbers. The furnace type sets the unit price, and the fuel contract sets the running costs: $1,000 to $2,500 a year appears in both HomeGuide and Angi. Get the tank and line work itemized in the same quote as the furnace.
*National and average figures are each publisher’s own published data. Sources (each fetched and read October 26, 2026; figures are each publisher’s latest published data):
1. HomeGuide, “How Much Does a Propane Furnace Cost to Install?” (December 30, 2025) — homeguide.com/costs/propane-furnace-cost
2. Angi, “How Much Does Propane Furnace Installation Cost?” (updated March 6, 2026) — angi.com/articles/propane-furnace-installation-cost.htm
3. HomeAdvisor, “How Much Does It Cost to Install a Propane Furnace?” (updated June 19, 2026) — homeadvisor.com/cost/heating-and-cooling/propane-furnace-prices