Quick answer
You can spot most HVAC scams in Ontario by three signs: someone arrives or calls uninvited, claims to be from the utility or the government, and wants a signature today. Uninvited door-to-door sales of furnaces, air conditioners and water heaters have been banned since 2018. Ask for the TSSA contractor registration, the technician's gas licence card, and a written quote you can keep overnight.
To spot an HVAC scam in Ontario, watch the sequence more than the words: unrequested contact, borrowed authority, a frightening claim with no measurement behind it, then a contract that has to be signed now. Legitimate contractors, utilities and inspectors do not work that way. The scripts below are the common ones, and each has a simple test.
Door and phone scripts HVAC scammers use
- The fake inspection: 'We are from the gas company' or 'the government sent us to check your furnace and water heater'. Utility staff do not sell or rent equipment at your door, and a safety regulator does not send inspectors round to sell you anything. The clipboard and lanyard are props.
- The unsafe furnace: a stranger looks at your furnace for two minutes and says it is leaking carbon monoxide or has a cracked heat exchanger, with no analyzer reading, no photo and no written tag. A real finding comes with numbers.
- The free upgrade: a 'no-cost' furnace, water heater or water filter that turns out to be a long rental contract, with monthly payments that rise each year and a buyout charge if you want out.
- The bill check: asking to see your Enbridge Gas or hydro bill 'to confirm you qualify'. The account number is what they are after.
- The rebate caller: a phone call promising a government furnace rebate if you book a home visit today. The actual program, the Home Renovation Savings Program, is run by Enbridge Gas and Save on Energy, and no current Ontario program pays for a gas furnace on its own.
- The cheap duct cleaning call: $99–$150 phone offers are usually bait for upselling once the crew is in your house. How duct cleaning scams work covers that one in full.
How to verify an HVAC company in five checks
- TSSA contractor registration. Any business that installs or services gas appliances in Ontario must be registered with TSSA as a fuels contractor. Ask for the number and look it up; verifying a TSSA licence shows where.
- The technician's own card. A gas technician carries a TSSA-issued certificate showing the class (G3, G2 or G1) and an expiry date, and refrigerant work needs an ODP card as well. No card, no work.
- A written quote left with you. A company that will not leave paper, or that needs a signature on a tablet before you have read the terms, is telling you what the terms are like.
- A legal name and a street address. Search the name printed on the contract, not the name on the jacket.
- A call you make yourself. If someone claims to be from Enbridge Gas or your rental company, close the door and phone the number on your own bill.
What Ontario law already bans
Two laws do much of the work. The Consumer Protection Act has, since March 1, 2018, prohibited unsolicited door-to-door sale or lease of furnaces, air conditioners, water heaters, air cleaners, water treatment devices and duct cleaning, and it treats a contract signed in breach as void. The Homeowner Protection Act, 2024 stopped companies from registering a notice of security interest (NOSI) on a home's title for consumer goods and deemed the existing ones expired.
The door-to-door ban has an edge worth knowing: it does not cover a visit you asked for. That is why current scripts push you to book a 'free inspection' by phone or through an online ad first. If you did invite them, a cooling-off period still applies, and cancelling a door-to-door HVAC contract walks through it.
A real red tag versus a scare tactic
A licensed gas technician who finds an unsafe appliance is required to tag it, and the tag is a document. It names the hazard, the technician, the licence number and the date, and the gas utility is notified. You are left with a copy.
A scare tactic has none of that. If someone condemns your furnace verbally and offers a replacement contract in the same breath, ask for the combustion reading in parts per million, a photo of the crack, and the tag. Then get a second opinion on a cracked heat exchanger before you sign anything.
Where to report an HVAC scam, and what to do if you signed
- Consumer Protection Ontario, 416-326-8800 or 1-800-889-9768: contracts, cancellations and misleading sales.
- Canadian Anti-Fraud Centre, 1-888-495-8501: impersonation and phone fraud.
- Your local police non-emergency line, if someone will not leave or took payment under a false identity.
- TSSA, if gas work was done in your home by someone without a licence.
- Your bank or card issuer, the same day, if you gave out payment details.
If equipment was installed, have it checked by a licensed technician before you rely on it through a winter. ZK Mechanical does HVAC inspections with written findings, and a diagnostic visit runs $90–$150. Call (647) 801-1252 or ask us to look at a quote or contract you are unsure about.