EQp2: Combustion Venting

Required

Intent

To limit the leakage of combustion gases into the occupied space of the home.

Requirements

Do not install any unvented combustion appliances (ovens and ranges excluded).
Install a carbon monoxide (CO) monitor on each floor, hard-wired with a battery backup. In multifamily buildings, install a CO monitor on each floor of each unit.
For all fireplaces and woodstoves inside the building, provide doors that close or a solid glass enclosure. Interior fireplaces and woodstoves that are not closed-combustion or power-vented must pass BPI or RESNET combustion safety testing protocols to ensure that depressurization of the combustion appliance zone is less than 5 Pa.
Space- and water-heating equipment that involves combustion must meet one of the following:

• it must be designed and installed with closed combustion (i.e., sealed supply air and exhaust ducting);
• it must be designed and installed with power-vented exhaust; or
• it must be located in a detached utility building or open-air facility.

Projects that earn the EPA Indoor airPLUS label automatically meet the requirements of this prerequisite.

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