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LEED v4
Homes
Indoor Environmental Quality
Combustion venting

LEED CREDIT

Homes-v4 EQp2: Combustion venting Required

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© Copyright U.S. Green Building Council, Inc. All rights reserved.

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. See all forum discussions about this credit »

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Addenda

4/5/2016
LEED Interpretation
Inquiry:

Which LEED v4 Homes credit and prerequisite requirements can be automatically met by the EPA Indoor airPLUS program?

Ruling:

Projects that earn the EPA Indoor airPLUS label, based on Indoor airPLUS Version 1 (Rev 03) Construction Specifications automatically meet the requirements of the following prerequisites and credits:

EQ prerequisite Ventilation;
EQ prerequisite Combustion venting;
EQ prerequisite Garage pollutant protection;
EQ prerequisite Radon-resistant construction;
EQ prerequisite Air filtering;
EQ prerequisite Environmental tobacco smoke;
EQ credit Contaminant control, Option 3. Preoccupancy Flush (0.5 points);
EQ credit Enhanced combustion venting, Option 2. Enhanced combustion venting measures (1 point);
EQ credit Enhanced garage pollutant protection, Case 1. Single Family, Option 1. Exhaust Fan in Garage (1 point)
MR credit Durability management verification (1 point)
SS credit Nontoxic pest control (1 point) , measure: Seal all external cracks, joints, penetrations, edges, and entry points with appropriate caulking. Install rodent- and corrosion-proof screens (e.g., copper or stainless steel mesh) on all openings greater than ¼ inch (6 millimeters), except where code prohibits their installation (e.g., dryer vents), and measure: Design discharge points for rain gutters, air-conditioning condensation lines, steam vent lines, or any other moisture source such that discharge is at least 24 inches (600 millimeters) from the foundation.

In addition, project teams are eligible for an Innovation credit for additional moisture control items covered in Indoor airPLUS and not directly awarded in LEEDv4

Campus Applicable
No
Internationally Applicable:
No
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USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

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.
See all LEEDuser forum discussions about this credit » Subscribe to new discussions about Homes-v4 EQp2