Underwriters
Laboratories,
Inc

Recognized Component

Air Conditioning
Contractors of
America

Heating,
Air Conditioning &
Refrigeration Distributors
International

Gas Appliance
Manufacturer
Association

Canadian Oil
Heat
Association

Canadian
Standards
Association

Air-Conditioning &
Refrigeration
Institute

Canadian Gas
Association

Eurpoean Control
Manufacturers
Association

Canadian Institute
of Plumbing and
Heating

Refrigeration Service
Engineers Society

Heating, Refrigeration
and Air Conditioning
Institute of Canada

Society of British
Gas Industries

Heating, Refrigeration
and Air Conditioning
Institute of Canada
for Wholesalers

Heating, Refrigeration
and Air Conditioning
Institute of Canada
for Contractors