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2014, 11-12 Duct Leakage Affidavit
t Duct Leakage Affidavit (New Construction) Permit #: House address or lot number: i i 8 2 1 (3004--e+i-e._, /v-e„Y') v-. City: 5 e Zip: LI 2- Cond.- Cond. Floor Area (ft2): N Bd5 Source (circle one): Estimated Measured ❑ Duct tightness testing is not required. The total leakage test is not required for ducts and air handlers located entirely within the building thermal envelope. Ducts located in crawl spaces do not qualify for this exception. Air Handler in conditioned space? 0 yes no Air Handler present during test?, yes 0 no Circle Test Method: Leakage to Outside otal Leakage) Maximum duct leakage: Post Construction, total duct leakage: (floor area x .04) = CFM@25 Pa Post Construction, leakage to outdoors: (floor area x .04) = CFM@25 Pa Rough -In, total duct leakage with air handler installed: (floor area x .04) = 7 Z CFM@25 Pa Rough -In, total duct leakage with air handler not installed: (floor area x .03) = CFM@25 Pa Test Result: Ip 1 CFM©25Pa Ring (circle one if applicable)): Duct Tester Location: .1 Open 1 3 Pressure Tap Location: 31g. I certify that these duct leakage rates are accurate and determined using standard duct testing protocol. Company Name: Technician: et) Technician Signature: C. Date: l I" Z--17 Phone Number: CY ".. t4jo 0 Duct Testing Calculator (New Construction) House address or lot #: Conditioned Floor Area: Duct tester location: Pressure tap location: Ring (if applicable): / gba i 34,t_cjG,.� Calculated Volume (cubic feet) $ / 17 /5 93b Standard /605 X 6 - l'(41'(v , / y /5-43v Tested CFM50 /2' i >i /e-ve( <_5.0 ACH50 (CFM5QX 60 _ conditioned Volume) to?! x le -0 lYa210o 3 i� f 30 Fcd3;'1 / kyr Open • 1 ,k 2 ❑ 3 • At Rough -In or Post Construction Test Method Standards Calculated Target Testi CFM25 Air Handler Present (Leakage to Exterior or Total Leakage) < 4 CF 5 per 100 sf of CFA Air Handler not Present /3 CFM25 per 100 sf of CFA (Leakage to Exterior or Total Leakage) 1. Test CFM25 must be equal to or less than the calculated target. Air Leakage testing Calculator (Blower Door Test) Conditioned Floor Area: Ceiling Hieght (ft) /4"- 3u Calculated Volume (cubic feet) $ / 17 0 Standard /605 X 6 - l'(41'(v , / y /5-43v Tested CFM50 Calculated Test Result (ACH50) <_5.0 ACH50 (CFM5QX 60 _ conditioned Volume) to?! x le -0 lYa210o 3 i� f 30 0 Glossary Rough -In: After installation of the complete air distribution system but before installation of insulation and sheet rock. Allows for access to all duct seams and connections for re-evaluation of seal integrity if standard is not met in intitial test. Post Construction: At or near final inspection. The home must be complete enough to pressurize the home to 25 pa. Total Leakage: Aggregation of the entire systems duct leakage in a duct test. Leakage to Exterior: Aggregation of all duct system leaks to the exterior of the CFA in a duct test. Pascal (pa): Unit of pressure CFA: Conditioned floor area in square feet CFM25: Cubic feet per minute of air leakage at 25 pascals of pressure CFM50: Cubic feet per minute of air leakage at 50 pascals of pressure Conditioned Volume: Volume of conditioned space (CFA X ceiling hieght) ACH50: Air changes per hour at 50 pascals of pressure Gale Contractor Services, a Masco Company 400 S Worthen St Wenatchee, WA 98801-3086 Blaine Skelton, ower Door Technician (509) 387-7097