# Water heater repair and replacement in Toronto > No hot water or a leaking tank in Toronto? Jackman Mechanical repairs and replaces water heaters. What to check first, what to photograph, and how to book. - Canonical HTML: https://www.jackmanmechanical.com/residential/water-heaters/ - Section: Home > Homes > Water heaters - Business: Jackman Mechanical Ltd., Toronto, ON, Canada (serves Toronto, North York, Mississauga, Markham, Ajax) - Phone: (416) 888-1371 | Text: (289) 639-2754 | Email: jackmanmechanicallimited@gmail.com - Page updated: 2026-10-20 --- For homes Jackman Mechanical Ltd. repairs and replaces water heaters in Toronto homes, and in North York, Mississauga, Markham and Ajax: no hot water, not enough hot water, a leaking or noisy tank, or an old heater you want replaced. Gas tank, electric tank and tankless. A photo of the label on the tank tells us the model and size before anyone arrives. [Call (416) 888-1371](tel:+14168881371) [Request online](https://www.jackmanmechanical.com/request/?problem=water_heater) [Text (289) 639-2754](sms:+12896392754) ## What should I do if the water heater is leaking? Water pooling around the tank is a call, not a form: [(416) 888-1371](tel:+14168881371), any hour. If water is spreading and you cannot stop it, close the main water valve. The City of Toronto says it is usually on the foundation wall where the water pipe enters the home, just before the water meter [(City of Toronto)](https://www.toronto.ca/services-payments/water-environment/your-water-pipes-meter/water-related-help-advice/pipe-leak-or-burst/). If you smell gas near a gas water heater, leave. Enbridge Gas says to get out right away, leaving doors and windows open behind you if you can do it without delay, and to call [1-866-763-5427](tel:+18667635427) or 911 once you are safely away [(Enbridge Gas)](https://www.enbridgegas.com/ontario/safety/smell-gas). ## What will the request form ask about my water heater? Four quick questions, all optional. They help us price it and bring the right parts. **Questions on the request form for water heater problems** | Question | The choices | | --- | --- | | What kind? | Gas tank · Electric tank · Tankless · Not sure | | Owned or rented? | Owned · Rented · Not sure | | How old is it? | Under 5 years · 5 to 10 years · Over 10 years · Not sure | | What is it doing? | No hot water · Not enough hot water · Leaking · Noisy · It works, I want a new one | **Photos that help.** The most useful are the label on the tank (it shows the model and size), the whole tank, and the pipes and vent on top. The form asks whether the tank is owned or rented because a rented tank belongs to the rental company, not to you. If you are not sure, the monthly charge on a utility or rental bill is the usual clue. ## What does a typical water heater installation look like? *Illustration of a typical installation, not a drawing of a specific job.* The drawing shows the parts we look at on every tank: the cold water shutoff, the expansion tank, the hot outlet, the vent, the temperature and pressure relief valve with its discharge line to a floor drain, and, on a gas tank, the gas shutoff and drip leg. When you send photos, those are the parts worth getting in the frame. ![A tall water heater beside black gas piping with yellow tags, red expansion tanks and white vent pipes in a basement.](https://www.jackmanmechanical.com/img/water-heater-room-900.webp) *From a Jackman Mechanical job: a water heater beside its gas line and expansion tanks.* ## Which rules apply to a gas water heater in Ontario? A gas water heater is a fuel-burning appliance, and three provincial rules follow from that. - **Who may work on it.** The TSSA, Ontario's fuels safety regulator, says maintenance of furnaces and fuel-fired appliances must be performed by TSSA-registered contractors, who must hire TSSA-certified gas technicians [(TSSA)](https://www.tssa.org/repeat-offender-convicted-unlicensed-gas-appliance-work-ontario-homes). More in [who can work on gas appliances](https://www.jackmanmechanical.com/guides/who-can-work-on-gas-ontario/). - **A carbon monoxide alarm.** The Government of Ontario says a home with a fuel-burning appliance needs one, beside each sleeping area and, since January 1, 2026, on every storey [(Government of Ontario)](https://www.ontario.ca/page/carbon-monoxide-safety). See the [carbon monoxide alarm guide](https://www.jackmanmechanical.com/guides/carbon-monoxide-alarms-ontario/). - **A yearly inspection.** The same page asks owners to have fuel-burning appliances, chimneys and vents cleaned and inspected by professionals every year. ## Repair or replace? That depends on the tank, its age and what failed, which is why the form asks how old it is and what it is doing. Jackman Mechanical prices each job directly with you; no prices are published on this site. If you already want a new heater, choose "A quote to replace or install" on the form. Published by Jackman Mechanical Ltd., Toronto. Updated October 20, 2026. ## Text the label Text a photo of the label on the tank to (289) 639-2754. It lands in our job inbox with your number. [Text (289) 639-2754](sms:+12896392754) ## Water on the floor? Call now, any hour. [Call (416) 888-1371](tel:+14168881371) --- Jackman Mechanical Ltd.: plumbing, gas and heating for homes and businesses in Toronto, North York, Mississauga, Markham and Ajax. Call (416) 888-1371. Full site: https://www.jackmanmechanical.com/