New ways to ensure combustion safety have been suggested for ASHRAE’s IAQ standard.
The American Society of Heating, Refrigeration and Air-Conditioning Engineers’ standard 62.2, “Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings,” current uses exhaust limits that presume a “tight” structure. The proposed addendum would allow designers to consider the actual attributes of the house when deciding on how well it protects against combustion, said Paul Francisco, vice chairman of the standard committee.