Quick answer
Take over a furnace rental only after you have read the contract and done the math. Before waiving conditions, get the remaining term, the monthly rate and its annual increase, the buyout amount and the age of the furnace. If the payments left add up to more than a new owned furnace at $4,500–$7,500 installed, ask the seller to pay the contract out on closing.
Whether you should take over a furnace rental when buying a house comes down to one comparison: the payments left on the contract against the cost of owning the same equipment. Most buyers never make it, because the rental shows up as one line in the offer and the monthly figure looks small. The contract can outlast the furnace, and once you have agreed to assume it in a firm deal, the seller's obligation is yours.
What to demand before you waive conditions
Ask for the documents, not a summary from the listing. In the standard Ontario agreement of purchase and sale, equipment listed under rental items is something the buyer agrees to assume, so the time for questions is before you sign or while your conditions are still open.
- The full rental contract in the seller's name, terms and conditions included.
- The start date and the remaining term in months.
- The current monthly rate and the escalator: the clause that lets the rate rise each year, and by how much.
- The buyout amount today, in writing from the rental company, and how it is calculated.
- The age of the equipment: install date, model and serial number. Check the rating plate against the paperwork.
- What the rental covers (repairs, parts, annual maintenance) and what it leaves out.
- The transfer conditions: whether the company has to approve you and whether it charges a fee.
If the seller cannot produce the contract, treat the buyout as unknown and write your offer accordingly. Your real estate lawyer should see these documents before conditions are waived; what follows is general guidance and not legal advice.
Three ways to handle the rental in your offer
- Seller pays it out on closing. The offer states that the furnace is owned and included, free of any rental or financing, and the seller's lawyer clears the account from the sale proceeds. For a buyer this is the cleanest result.
- Price reduction equal to the buyout. You assume the contract and then pay it out yourself after closing, or keep it, with the cost already taken off the price. Use the written buyout figure, not an estimate.
- Assume it knowingly. You take the contract as it stands because the numbers work: newer equipment, a fair rate and repairs included.
The seller's side of the same negotiation is covered in what happens to a furnace rental when the house sells. When several offers are competing you may not get either of the first two, which is a reason to know the buyout before offer night and not after.
The math: remaining payments against owning the furnace
Multiply the monthly rate by the months remaining, then add the annual increases the contract allows. That total is what the furnace will cost you from closing day. Set it beside two other numbers: the buyout, and the $4,500–$7,500 that a new high-efficiency furnace costs installed and owned, with a new warranty.
- The payments left are modest, the furnace is under about 8 years old and repairs are included: assuming the rental is reasonable.
- The payments left come to well above the installed price of a new furnace: push for the seller to pay it out, or take the buyout off your offer.
- The furnace is over 12 years old with years left on the contract: you would be paying rent on equipment near the end of its service life. Negotiate hard, or hand the rental back to the seller as a condition.
Renting is not automatically the worse deal. A rental normally includes repairs, which has real value on older equipment; who pays for repairs on rented equipment explains what is usually covered. The price of that coverage is what you are measuring. Our comparison of renting or buying a furnace in Ontario lays out the long-run numbers.
Check the equipment, not just the contract
A rental contract tells you nothing about the condition of the furnace. Compare the age on the rating plate with the remaining term: a 12-year-old furnace with six years of payments left is a different proposition from a 3-year-old one. Ask for the service history, since the rental company keeps one, and look for repeated calls for the same fault.
A general home inspection does not open the furnace or test combustion. If the rental is a large number in your deal, a licensed HVAC inspection during the conditional period tells you whether the equipment is worth assuming and gives you a written report to negotiate with. The same visit can cover the air conditioner and the water heater, which are often rented from the same company under separate contracts.
ZK Mechanical inspects furnaces for buyers across Halton, Hamilton and Peel and prices an owned replacement in writing, so you have a real figure to set against the buyout. See what the HVAC inspection includes, read how a furnace rental buyout works, or request an inspection before your condition date.