Furnace financing vs renting in Ontario: what it really costs
A low monthly number can hide a high total. Here is how buying, financing and renting compare over 10 and 15 years, and what to read before you sign.
Updated By the FurnaceQuotes.ca editorial team9 min read
The short answer
- Cash costs least by a wide margin. Financing adds interest but you own the furnace. Renting usually covers repairs, but the bills often rise and ending early means a buyout.
- Rentals typically run $40 to $80 a month on 10 to 15 year terms: $7,200 to $14,400 over 15 years, before HST and any increases. Buying a standard furnace is typically $4,000 to $6,500.
- Before signing a rental, read the escalation clause, the buyout schedule and the terms for selling or replacing.
- New applications for the Canada Greener Homes Loan ended on October 1, 2025.
- Typical furnace rental
- $40 to $80 a month10 to 15 year terms
- Rent paid over 15 years
- $7,200 to $14,400Flat rate, before HST
- Buy a standard furnace
- $4,000 to $6,500Installed, before HST
- Renting costs more after
- About 10 years$60 a month vs a mid-range standard furnace
Which costs less: buying, financing or renting?
If you plan to stay more than a few years, paying cash costs least by a wide margin. Financing adds interest: at an example 7.99% over 10 years, the total lands close to 15 years of rent, but the furnace is yours once the loan is paid. Renting needs nothing up front and usually covers repairs, but the rate often rises and ending early means a buyout.
Buy, with cash or financing
- You own the furnace from day one, and it stays with the house when you sell.
- Lowest total cost over the furnace's life when you pay cash.
- You choose the equipment and the installer, and you can compare quotes.
- You pay for yearly tune-ups, and for repairs once the warranties run out.
Rent
- Nothing up front and one monthly bill.
- Repairs and maintenance are usually included for the term.
- The monthly rate is often set to rise every year.
- Ending early, replacing the unit or selling the house can mean paying a buyout.
Total cost over 10 and 15 years
The table adds up each option from the typical ranges on FurnaceQuotes.ca: a single-stage furnace at $4,000 to $6,500 and a two-stage at $5,500 to $8,000. Low figures pair with low, high with high.
| Option | Over 10 years | Over 15 years |
|---|---|---|
| Rent, $40 to $80/month, flat | $4,800 to $9,600 | $7,200 to $14,400 |
| Rent, $40 to $80/month, rising 3% a year | $5,500 to $11,010 | $8,930 to $17,850 |
| Buy single-stage, cash | $5,200 to $9,000 | $5,800 to $10,250 |
| Buy two-stage, cash | $6,700 to $10,500 | $7,300 to $11,750 |
| Buy single-stage, financed 10 years at 7.99% | $7,020 to $11,960 | $7,620 to $13,210 |
What the table cannot show: as an owner, a repair after the warranty is yours to pay, while a rental usually covers it. After 15 years of owning you have a furnace with life left in it; after 15 years of renting, some contracts hand over ownership and others keep billing until you buy out.
Put simply: at $60 a month, rent is $720 a year. A mid-range standard furnace ($5,250) plus a $185 yearly tune-up costs less than renting after about 10 years, and a two-stage ($6,750) after about 13. Stay longer and buying wins, before counting any rental increases.
Weighing a rental offer? Get a written purchase quote for the same home to compare.
Get A Free QuoteWhat a furnace rental includes
A rental bundles the furnace, the installation and usually repairs and maintenance into one monthly charge for a fixed term, typically 10 to 15 years in Ontario. Coverage varies by company and plan, so look for a written list of what is covered: parts, labour, emergency visits, yearly maintenance, filters. Ask what is left out, such as duct changes, damage and upgrades.
What to read in a rental contract
Escalation clause
Many contracts let the monthly rate rise every year, by a set percentage or as the company decides. At 3% a year, an $80 rental reaches about $121 a month by year 15.
Term and end of term
Do you own the furnace when the term ends, or do payments continue until you buy it out or return it?
Buyout schedule
A table of what it costs to buy the furnace in each year of the term. Ask for it before you sign and compare the year 1 figure with a cash price.
Early termination and removal fees
What you pay to end the contract, have the unit removed or replace it with another company's equipment.
Selling your home
Whether a buyer can take over the contract, or whether you must buy it out at closing. Buyers and their lawyers will ask.
Service terms
Which maintenance visits are included, how often, and how fast repairs are promised in winter.
Ontario rules that already protect you
A business generally cannot sign you up for a furnace, air conditioner or water heater contract in your home unless you contacted it first. For these in-home contracts you have 10 days to cancel without a reason, counted from when you receive a written copy. Ontario's Homeowner Protection Act, 2024 also prohibits registering a notice of security interest (NOSI) on title for consumer goods like these, though the contract still applies. General information only, not legal advice.
Buying out a furnace rental
Ask the company for the current buyout amount in writing. It should match your contract's buyout schedule for the year you are in. Check whether it includes HST and any removal fee. Then pick a path:
- Buy out and keep it if the furnace is fairly new and working well. The rent stops and repairs become yours.
- Buy out and replace it if it is old or failing. The furnace belongs to the rental company, so it usually has to be bought out or returned under the contract before another company replaces it. Get the buyout figure and a replacement quote side by side.
- Ride out the term if the buyout is high and the end is near. Confirm in writing what happens on the last day.
Our guide on how to negotiate a furnace price helps you land a fair number for the replacement.
Financing: how to compare offers
Contractor financing is a loan on a furnace you own, so compare it like one. Get these in writing:
- The interest rate (annual percentage rate), fixed or not, and the term in months.
- Total interest over the full term: the real price of financing.
- Prepayment. Can you pay it off early without a penalty?
- Promotions. For 0% or deferred-payment deals, the rate after the promotion ends, and whether the cash price is lower.
How rate and term change the total on an example $6,750 two-stage furnace, the middle of its typical range:
| Example rate and term | Monthly payment | Total interest | Total paid |
|---|---|---|---|
| 7.99% over 5 years | $137 | $1,460 | $8,210 |
| 7.99% over 10 years | $82 | $3,073 | $9,823 |
| 12.99% over 5 years | $154 | $2,463 | $9,213 |
| 12.99% over 10 years | $101 | $5,339 | $12,089 |
A longer term lowers the payment but adds interest. If the rate is high, compare cheaper borrowing, or a single-stage furnace at $4,000 to $6,500.
Paying cash
Cash gives you the most room to negotiate. Ask whether the price differs for cash or e-transfer compared with a card or financing. Keep the deposit modest, with the balance due on completion: large deposits and pressure to pay in full up front are among the furnace quote red flags to watch for. Not sure what a purchase would cost for your home? The furnace price estimator gives a quick range.
Water heater rentals: the same maths
Many Ontario homes rent their water heater, often billed with the gas bill, and the comparison works the same way. Buying outright, plan on $1,800 to $3,200 installed for a gas tank or $3,500 to $6,000 for tankless, before HST.
Find the monthly rental charge on your bill and multiply it by 12. Every $10 a month is $120 a year, or $1,800 over 15 years. At an example $30 a month, a tank in the middle of its price range ($2,500) costs about the same as 7 years of rent. Check the same buyout and removal clauses before replacing a rented tank. Our water heater quote page covers what goes into a replacement.
Rebates and the Greener Homes Loan
The federal Canada Greener Homes Loan no longer takes new applications. For heat pumps, the rebate rules treat rented and purchased systems differently, so check before you choose how to pay.
Rebates: check before you sign
Heat pump rebates do not cover a standalone gas furnace or a cooling-only air conditioner, so do not count on a rebate for a straight furnace or AC replacement.
Ontario's Home Renovation Savings program offers heat pump rebates with eligibility rules by heating fuel, home type and product, and it requires approval before installation. Program rules change often, so check the official pages before you buy and never sign because of a promised rebate amount. New applications for the Canada Greener Homes Loan ended on October 1, 2025.
When you are ready, a furnace replacement quote gives you a written cash price to set against any rental or financing offer. More guides are in the Quote Guide.
Common questions
Straight answers. If yours is not here, the company can answer it during your free estimate.
Rent or buy: which costs less for an Ontario furnace?
For most homeowners who plan to stay put, buying costs less, especially with cash. At typical rates, rent passes the cost of a mid-range standard furnace plus yearly tune-ups in about 10 years, and many rentals run 15. Renting can suit you if you cannot pay up front and want repairs covered, once you have read the escalation and buyout terms.
How do I buy out my furnace rental?
Ask the rental company for the current buyout amount in writing and check it against your contract's buyout schedule. Confirm whether it includes HST and removal. Once paid, get written confirmation that the account is closed and the equipment is yours. If you are replacing the furnace, get a replacement quote at the same time.
What happens to a furnace rental when I sell my house?
It depends on the contract. Often the buyer agrees to take it over, or you buy it out by closing. Either way it comes up in the sale, so find your contract and buyout figure early. Since 2024, Ontario prohibits registering notices of security interest on title for consumer goods like furnaces, but the contract still applies.
Is 0% furnace financing really free?
Sometimes. Check whether the financed price is higher than the cash price, what rate applies if the balance is not cleared by the end of the promotion, whether interest is then charged back to the start, and whether there are fees. If the price matches cash and you can pay it off in time, a true 0% offer is fair.
Should I finance or rent if I cannot pay cash?
Compare the totals over the time you expect to stay. In our illustration, a furnace financed at 7.99% over 10 years costs about as much as 15 years of rent, but it is yours once the loan ends, while rent keeps coming or a buyout is due. Renting covers repairs. Put the buyout schedule and the loan's total interest side by side.
Get a cash price to compare
Answer a few quick questions. A participating local HVAC company books a free in-home estimate and gives you a written quote to set beside any rental offer.
Takes under a minute. No cost, no commitment.