Gas, oil and solid fuel appliances and equipment

With over sixty years of combustion certification experience, UL has the expertise and resources to meet manufacturer gas, oil and solid fuel appliance and equipment certification needs. By testing to UL Standards, ANSI Z21/CSA and Z83/CSA series gas-fired appliance standards, the certification process is both cost effective and efficient.

Additional information

Fill out a combustion inquiry form to direct your question to a combustion product industry staff member.

For information on future UL workshops or to request a specific topic be addressed, submit a request using the request for quote. For equipment that handles or stores flammable & combustible fluids (including gas & oil), please see flammable and combustible fluids.