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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Prerequisites
2.1 Basic combustion venting measures. Meet all the following requirements.- No unvented combustion appliances (e.g., decorative logs) are allowed.
- A carbon monoxide (CO) monitor must be installed on each floor.
- All fireplaces and woodstoves must have doors.
- Space and water heating equipment that involves combustion must meet one of the following. Space heating systems in homes located in IECC-2007 climate zone 1 or 2 are exempt.
Credits
2.2 Enhanced combustion venting measures (maximum 2 points). Install no fireplace or woodstove, or design and install a fireplace or woodstove according to the requirements in Table 1.Table 1 Fireplace and Stove Combustion-Venting Requirements
Fireplace or stove |
Enhanced combustion-venting measures |
|
|---|---|---|
Better practice (1 point) |
Best practice (2 points) |
|
None |
See ‘best practice’. |
Granted automatically. |
Masonry wood-burning fireplace |
Install masonry heater as defined by American Society for Testing and Materials Standard E-1602 and International Building Code 2112.1. |
Meet requirement for ‘better practice’, and conduct back-draft potential test to ensure ∆ P ≤ 5 Pascals (see “conducting a back-draft potential test” below). |
Factory-built wood-burning fireplace |
Install equipment listed by approved safety testing facility (e.g., UL, CSA, ETL) that either is EPA certified or meets the following: equipment with catalytic combustor must emit less than 4.1 g/hr of particulate matter, and equipment without catalytic combustor must emit less than 7.5 g/hr of particulate matter. |
Meet requirement for better practice, and conduct back-draft potential test to ensure ∆ P ≤ 5 Pascals (see “Conducting a Back-Draft Potential Test,” below). |
Woodstove and fireplace insert |
Install equipment listed by approved safety testing facility that either is EPA certified or meets following requirement: equipment with catalytic combustor must emit less than 4.1 g/hr of particulate matter, and equipment without catalytic combustor must emit less than 7.5 g/hr of particulate matter. |
Meet requirement for better practice, and conduct back-draft potential test to ensure ∆ P ≤ 5 Pascals (see “conducting a back-draft potential test” below). |
Natural gas, propane, or alcohol stove |
Install equipment listed by approved safety testing facility that is power-vented or direct-vented and has permanently fixed glass front or gasketed door. |
Meet requirement for better practice, and include electronic (not standing) pilot. |
Pellet stove |
Install equipment that is either EPA certified or listed by approved safety testing facility to have met requirements of ASTM E 1509-04, “Standard Specification for Room Heaters, Pellet Fuel-Burning Type.” |
Meet requirement for better practice, and include power venting or direct venting. |
Conducting a back-draft potential test
Using the results from a blower-door test, measure the pressure difference created by the presence of a chimney-vented appliance. To ensure a limited risk of back-drafting, the pressure difference (Δ P) must be less than or equal to 5 Pascals, where Δ P = (Q/C) 1/n (must be ≤ 5 Pascals) and Q is equal to the sum of the rated exhaust provided by the two biggest exhaust appliances in the home, and C and n are both constants produced by the blower-door test results. See all forum discussions about this credit »What does it cost?
Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »Frequently asked questions
See all forum discussions about this credit »Documentation toolkit
The motherlode of cheat sheets
LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Prerequisites
2.1 Basic combustion venting measures. Meet all the following requirements.- No unvented combustion appliances (e.g., decorative logs) are allowed.
- A carbon monoxide (CO) monitor must be installed on each floor.
- All fireplaces and woodstoves must have doors.
- Space and water heating equipment that involves combustion must meet one of the following. Space heating systems in homes located in IECC-2007 climate zone 1 or 2 are exempt.
Credits
2.2 Enhanced combustion venting measures (maximum 2 points). Install no fireplace or woodstove, or design and install a fireplace or woodstove according to the requirements in Table 1.Table 1 Fireplace and Stove Combustion-Venting Requirements
Fireplace or stove |
Enhanced combustion-venting measures |
|
|---|---|---|
Better practice (1 point) |
Best practice (2 points) |
|
None |
See ‘best practice’. |
Granted automatically. |
Masonry wood-burning fireplace |
Install masonry heater as defined by American Society for Testing and Materials Standard E-1602 and International Building Code 2112.1. |
Meet requirement for ‘better practice’, and conduct back-draft potential test to ensure ∆ P ≤ 5 Pascals (see “conducting a back-draft potential test” below). |
Factory-built wood-burning fireplace |
Install equipment listed by approved safety testing facility (e.g., UL, CSA, ETL) that either is EPA certified or meets the following: equipment with catalytic combustor must emit less than 4.1 g/hr of particulate matter, and equipment without catalytic combustor must emit less than 7.5 g/hr of particulate matter. |
Meet requirement for better practice, and conduct back-draft potential test to ensure ∆ P ≤ 5 Pascals (see “Conducting a Back-Draft Potential Test,” below). |
Woodstove and fireplace insert |
Install equipment listed by approved safety testing facility that either is EPA certified or meets following requirement: equipment with catalytic combustor must emit less than 4.1 g/hr of particulate matter, and equipment without catalytic combustor must emit less than 7.5 g/hr of particulate matter. |
Meet requirement for better practice, and conduct back-draft potential test to ensure ∆ P ≤ 5 Pascals (see “conducting a back-draft potential test” below). |
Natural gas, propane, or alcohol stove |
Install equipment listed by approved safety testing facility that is power-vented or direct-vented and has permanently fixed glass front or gasketed door. |
Meet requirement for better practice, and include electronic (not standing) pilot. |
Pellet stove |
Install equipment that is either EPA certified or listed by approved safety testing facility to have met requirements of ASTM E 1509-04, “Standard Specification for Room Heaters, Pellet Fuel-Burning Type.” |
Meet requirement for better practice, and include power venting or direct venting. |
