# Technical Standards and Safety Authority

Ontario's regulator for fuels, boilers and pressure vessels. Gas and fuel work in Ontario must be done by TSSA-registered contractors and certified technicians.

- Type: Licence required by law
- Contractors with a TSSA entry in the public data we track: 769
- Entries that appear expired or past their stated expiry date: 57
- Data collected up to: Jul 11, 2026
- Official register: https://www.tssa.org/
- Page: https://ca.mytrustedtraders.com/certifications/tssa

Counts reflect collected public entries, not official membership totals. Absence from this data does not mean a contractor is unregistered.

## Where holders are

- ON: 754
- Ontario: 3
- QC: 3
- AB: 3

## Trades that hold it

- HVAC contractor: 759
- heating engineer: 3
- Builder: 1
- HVAC contractor: 1
- Plumber: 1

## TSSA holders with review evidence

A slice of holders that also have customer reviews on MyTrustedTraders. This is not the register itself.

- **Spring Home Heating & Cooling Systems Inc**: hvac fuels contractor · Markham, ON · 1,033 reviews. https://ca.mytrustedtraders.com/traders/mtt261447-spring-home-heating-cooling-tssa
- **Cedarstone Group Inc.**: builder · Toronto, ON · 24 reviews. https://ca.mytrustedtraders.com/traders/cedarstone-group-inc
- **AtlasCare Heating, Cooling, Plumbing**: hvac fuels contractor · Oakville, ON · 10 reviews. https://ca.mytrustedtraders.com/traders/mtt261500-atlascare-tssa
- **Homestar Heating & Air Conditioning Inc**: hvac fuels contractor · North York, ON · 10 reviews. https://ca.mytrustedtraders.com/traders/mtt261553-homestar-heating-tssa
- **JC Contracting & Mechanical Inc**: 9 reviews. https://ca.mytrustedtraders.com/traders/ca-homestars-jc-contracting-mec-jc-contracting-mec
- **Airthentic Heating And Cooling Inc**: 2 reviews. https://ca.mytrustedtraders.com/traders/homestars-ac144efd71fb5fa4
- **Aria Heating and Cooling Inc.**: 2 reviews. https://ca.mytrustedtraders.com/traders/ca-homestars-aria-heating-and-c-aria-heating-and-c
- **Peak Comfort HVAC Inc.**: hvac contractor · 2 reviews. https://ca.mytrustedtraders.com/traders/ca-homestars-peak-comfort-hvac-i-peak-comfort-hvac
- **A Grade Heating and Air Conditioning Inc.**: hvac fuels contractor · Toronto, ON · 1 reviews. https://ca.mytrustedtraders.com/traders/mtt261563-a-grade-heating-air-conditioning-tssa
- **Finest Plumbing and Mechanical Inc.**: plumber · 1 reviews. https://ca.mytrustedtraders.com/traders/ca-homestars-finest-plumbing-an-finest-plumbing-an

## Common questions

### What is Technical Standards and Safety Authority?

Ontario's regulator for fuels, boilers and pressure vessels. Gas and fuel work in Ontario must be done by TSSA-registered contractors and certified technicians. (Licence required by law.)

### How many contractors hold Technical Standards and Safety Authority?

We track 769 contractors with a Technical Standards and Safety Authority entry, based on register and listing data collected up to Jul 11, 2026. This reflects the public entries we have collected, not necessarily the scheme's complete membership.

### Can a Technical Standards and Safety Authority entry be out of date?

Yes. 57 of the entries we track appear expired or past their stated expiry date, based on register and listing data collected up to Jul 11, 2026. Always confirm current status on the official register before hiring.

### How do I check whether a specific contractor holds Technical Standards and Safety Authority?

Check the official register at https://www.tssa.org/, or look the contractor up on MyTrustedTraders. Profiles show the credentials we have found for them, alongside reviews and other public evidence.