2015, 01-12 Duct Leakage AffidavitDuct Leakage Affidavit (New Construction)
Permit #:
House a6ss or lot number: 161C) 29 E OuckeL3e e.,
City: Spo Vok I i-exi (39 1/ 2_
Cond. Floor Area (ft2): 1 SC'S— Source (circle one):
Estimated Measured
O 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 g no
Circle Test Method:
Air Handler present during test?X yes 0 no
Leakage to Outside otal Leaka;D
Maximum duct leakage:
Post Construction, total duct leakage: (floor area x .04) = 7 2- CFM@25 Pa
Post Construction, leakage to outdoors: (floor area x .04) = CFM@25 Pa
Rough4n, total duct leakage with air handler installed: (floor area x .04) = CFM@25 Pa
Rough4n, total duct leakage with air handler not installed: (floor area x .03) = CFM@25 Pa
Test Result: 60 1 CFM@25Pa
Ring (circle one if applicable): Open
Duct Tester Location: giA Pressure Tap Location: 13/12.
certit, that these duct leakage rates are accurate and determined using standard duct testing protocol.
Company NameTr-ea Technician: (1..e0
Technician Signature: (.1
Date:
7) •
Phone Number: 9 L/( -4 CO
Duct Testing Calculator (New Construction
House addressor lot #:
Conditioned Floor Area:
Duct tester location:
Pressure tap location:dL
Ring (if applicable):
f y 7; / F &46. y e %/(X
/ xl . ,(e 0.1,y— \., a 7.�a)- = 7).' -,- /days
/„r,1 je Lie
U,7'
Open • 1 Lk 2 ❑ 3 ❑
Tested CFM50
At Rough -In or Post Construction
Test Method
Standard1
Calculated
Target
I Test'
CFM25
Air Handler Present (Leakage
to Exterior or Total Leakage)
< 4 CFM25 per 100 sf of CFA
Air Handler not Present
5 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 (Slower Door Test
Conditioned Floor Area:
Ceiling Hieght (ft)
/46-n
Calculated Volume (cubic feet)
9
0
Standard
Tested CFM50
Calculated Test
Result (ACH50)
55.0 ACH50 (cFm„x
60 = conditioned Volume)
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Glossary
Rough-ln: 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
1A5
Gale Contractor Services, a Masco Company
400 S Worthen St
Wenatchee, WA 98801-3086
r‘,
Blaine S - Iton, Blower Door Technician
(509) 387-7097