UL 979 Logo IAPMO

Association/Organization in Ontario, United States
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IAPMO is the global product certification agency and industry-leader in code and standards development.

Frequently asked questions

Q:
Does IAPMO consider UL 1995 a more stringent substitute for UL 1812 in this case regarding Section 504.5?
A:
We are looking for clarification regarding Section 504.5 which requires ducted heat recovery ventilators to comply with UL 1812. We are looking to utilize a ducted heat recovery ventilator...
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