Plumbing, Gas and Heating Guides for Ontario Homes

Plain answers about plumbing, gas and heating rules in Ontario

Jackman Mechanical Ltd., a plumbing, gas and heating contractor in Toronto, keeps these guides to the rules that come up on real calls: carbon monoxide alarms, burst and frozen pipes, heat in rentals, who may work on gas, and Toronto permit fees. Every rule is quoted from its official source, the Government of Ontario, the City of Toronto, Enbridge Gas or the TSSA, with a link beside it.

Which guide do I need?

Carbon monoxide alarms in Ontario homesWhich homes need one, where they go since January 1, 2026, and what to do when one sounds.Read more
A burst or frozen pipe in TorontoShut the main valve, who owns which pipe, the 311 shutoff, and thawing a pipe safely.Read more
No heat in a Toronto rentalThe 21°C rule from October 1 to May 15, the 24 hour response, and who calls whom.Read more
Who can work on gas appliances in OntarioRegistered contractors, certified gas technicians, and how to check a company.Read more
Plumbing and heating permits in TorontoThe permits Toronto Building lists for plumbing, drains and furnaces, and their 2026 fees.Read more

Which rule does each guide answer?

The guides and their sources
Guide	The question	Source
Carbon monoxide alarms	Where must alarms go in an Ontario home since January 1, 2026?	Government of Ontario
Burst or frozen pipe	What do I do first, and who owns which pipe?	City of Toronto
No heat in a rental	How warm must a Toronto rental be, and when?	City of Toronto
Who can work on gas	Who may install or service a gas appliance in Ontario?	TSSA
Plumbing and heating permits	Which jobs need a Toronto permit, and what do they cost?	City of Toronto

In an emergency right now?

Skip the reading. The emergency page has every first step in one table, and the phone is (416) 888-1371, 24/7.

Published by Jackman Mechanical Ltd., Toronto. Updated October 20, 2026.

Plain answers about plumbing, gas and heating rules in Ontario

Which guide do I need?

Which rule does each guide answer?

In an emergency right now?

Send it now, or call.