Qualifications
The licences and certifications behind our work, and the municipal backflow programs that list Spec-Mark Group.
Licences and certifications
A G1 gas technician may work on gas equipment of any input. A G2 is limited to equipment up to 400,000 BTU per hour, under Ontario Regulation 215/01. The 313A certificate covers refrigeration and air conditioning systems. The 306A Certificate of Qualification, with its Red Seal endorsement, is the certificate under which installation and repair work is done.
| Certificate | Trade or scope | Issued by |
|---|---|---|
| Backflow and plumbing | ||
| ASSE | Backflow prevention certification (ASSE 5000 series) | ASSE International |
| 306A | Plumber (Red Seal) | Skilled Trades Ontario |
| Heating and cooling | ||
| 313A | Refrigeration and Air Conditioning Systems Mechanic | Skilled Trades Ontario |
| G1 and G2 | Gas technician 1 and gas technician 2 | Technical Standards and Safety Authority (TSSA) |
| Company registration | ||
| TSSA registration FS-R-53234 | Fuels contractor, natural gas | Technical Standards and Safety Authority (TSSA) |
Municipal listings
Most backflow programs keep a list of the testers they accept reports from, or register them in their own systems. Spec-Mark Group is on these published lists:
- Region of Peel: qualified contractor list, last updated May 2026.
- City of Markham: list of qualified persons, as of March 12, 2026, under the former name Spec-Mark Mechanical.
- City of Vaughan: Approved Qualified Company List, all functions, updated October 12, 2026.
- Town of Aurora: Approved Qualified Company List, all functions, updated August 7, 2026.
- Region of Durham: qualified contractor list, kept by Backflow Solutions Inc. (BSI), under the former name.
The City of Toronto registers testers but publishes no list. It accepts an ASSE certificate issued within the last three years, and our testers file reports through the City's online system. For a property in Halton Region, the City of Hamilton or the City of Richmond Hill, send us the notice and we confirm the next step.
Installation and repair work is carried out by licensed plumbers, and the company is insured for commercial work. A certificate of insurance is available on request. Every test report is filed with the municipality that asked for it, with a copy to the property owner or manager.
Received a notice from your municipality?
Tell us who sent it and what it asks for.