HomeMy WebLinkAboutBlower Door TestDexter Diagnostics
18 Crescent Pl, Glenwood Springs, CO 81601
720-219-3683
dexterdiagnostics@gmail.com
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Blower Door Test Verification Form
Builder / Developer:
Modfin Design Build
shaggs09@yahoo.com
970-948-3101
Site Address: 479 Spring Ridge Rd.
Blower Door Testing Results:
CFM50: 628
Fan PA: -50.1
Flow Ring: B4
Air Leakage Rate: 1.23 ACH50
Type of ventilation used to meet the code requirement: The only continuous ventilation is in the crawlspace; it is an
exhaust fan. It is recommended that a BALANCED ventilation system is utilized (because there is an open vent water
heater and you do not want to backdraft i). A balanced system can be achieved by utilizing an ERV or (because the
house is finished) adding a vent with a damper to the exterior and this is tied to the furnace’s return. 60 cfm is required
per M1507 of the IRC.
Passes 2018 IECC Requirement? YES
2018 IECC Requirements:
R402.4.1.2 Testing – The building or dwelling unit shall be tested and verified as having an air leakage rate not exceeding three air changes per hour
in Climate Zones 3 through 8. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.
Signed,
_____________________________________________________________________
Amanda Poindexter Date
RESNET HERS Rater #3774492
9/26/24