20120149 Duct Leak Affid 05252012Duct Leakage Affidavit
Permit #: 9-0 1 Z 0, / LI
House address or lot number: Sou LAe7i Ikk: "g L,(,\,
City: YCA_M Zip:
Cond. Floor Area (ft): Z(c0'L Source (circle one): Plans Estimated Measured
❑ Duct tightness testing is not required for this residence per exceptions listed at the end of this document
Air Handler in conditioned space? ❑ yes [ono
Circle Test Method: Leakage to Outside
Air Handler present during test? E yes ❑ no
Total Leakag
Maximum duct leakage:
Post Construction, total duct leakage: (floor area x.08) = CFM @25 Pa
Post Construction, leakage to outdoors: (floor area x .06) = CFM @25 Pa
Rough -In, total duct leakage with air handler installed: (floor area x.06) = I � CFM @25 Pa
Rough -In, total duct leakage with air handler not installed: (floor area x.04) = CFM @25 Pa
Test Result: 14( CFM @25Pa
Rino (circle one if aDDlicable): Open 1 2 3
Duct Tester Location: Q-iA Pressure Tap Location: S lA
I certify that these duct leakage rates are accurate and determined using standard duct testing protocol.
Company Name: Saves t%8AT1VALa Technician: [2�AAJD, j 14O—r b
Technician Signatura. '° V Date: 5 -25- 12 Phone Number: 25_i $7S- 1115 7
Washington State Energy Code reference: .
503.10.3 Sealing. All ducts, air handlers, filter boxes, and building cavities used as ducts shall be sealed. Joints and seams shall comply
with Section M1601.3 of the International Residential Code or 603.9 of the International Mechanical Code. Duct tightness testing shall be
conducted to verify that the ducts are sealed. A signed affidavit documenting the test results shall be provided to the jurisdiction having
authority by the testing agent. When required by the building official, the test shall be conducted in the presence of department staff.
Exceptions: 1. Duct tightness test is not required if the air handler and all ducts are located within conditioned space.
2. Duct testing is not required if the furnace is a nondirect vent type combustion appliance installed in an unconditioned space.
A maximum of six feet of connected ductwork in the unconditioned space is allowed. All additional supply and return ducts
shall be within the conditioned space. Ducts outside the conditioned space shall be sealed with a mastic type duct sealant and
insulated on the exterior with R -8 insulation for above grade ducts and R -5 water resistant insulation when within a slab or
earth.
0
Duct testing Cilrulator (New. Construction)
House address or lot #: S. j3, — A , SO
Conditioned F1oorArea'_-Iwo
Duct tester location:
Pressure tap location:
Ring (if applicable): Open 1 2 3
_ -- At Rough -in (Total Leakage)
Test Method &
Test2
Calculated
Stand5rd'•
CFM2s•
Target
Air Handier Present
SiA =d.L
<_ 6 CFM25 per 100 sf of CFA
.06 X CFA :5 CFMu
Air Handler not Present
5 4 CFM,s per 100 sf of CFA
.04 X -CFA :5 CFM25
Post Construction
Test Method &
Test'
Calculated
Standard'
CFMu
Target
Air Handler Present (Total Leakage)
OS X CFA 5 CFM25
<_ 8 CFM25 per 100 sf of CFA
.Air Handler Present (Leakage to Fxtedor)
.06 X CFA :5 CFM75
5 6 CFM25 per 100 sf of CFA
1. Test results must comply with one of the Standards options.
F. Test CW25 must be equal to or less than the calculated target.
Air Leakage testing Calculator (Blower moor Test)
Standard
Tested
CFMso
Calculated Test Result
((/51 0 CFM50 X 0.055) - OloO.3 CFA X 144)) = SLA
0.00030 SLA
i G
g3 U5 divided by 37 , ?3Z_='SLA
SiA =d.L
Glossary
Rough -In: After installation of the complete air distribution system but before installation of insulation and sheet rack. 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: 'Aggregat on of the entire systems duct leakage in a duct tes .
�eakage to Exterior: Aggregation of ail duct system leaks to the exterior of the CFA in a ducttest
FA: Conditioned floor area
CFMu: Cubic feet per minute of air leakage at 25 pascals of pressure
_ CFMso: Cubic feet per minute of air leakage at 50 pascals of pressure
Pascal (pa): Unit of pressure
SLA: Specific leakage area