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2026 Fall AABC TAB Technology Showcase
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Home
About
Why Specify AABC
Board of Directors
Hall of Fame
Outstanding Service Award
AABC Timeline
Quality Assurance
News & Updates
Join AABC
AABC Member Benefits
Certification
Member Locator
US Members
Canadian Members
International Members
ACG Members
Recruitment
Job Posting
Publications
National Standards for Total System Balance
Technician Training Manual
Kahoe Test & Balance
Equation Quick Guide
AABC Annual Meeting
Registration
Program
Activities
Professional Development
2026 Fall AABC TAB Technology Showcase
TAB Talk Webinars
TAB Journal
TAB Lunch & Learn
Endorsed Training
Connect with AABC
Industry Partners
Industry Partner Benefits
Advertise in TAB Journal
Webinar Sponsorship
Annual Sponsorship Opportunities
Member Portal
Home
About
Why Specify AABC
Board of Directors
Hall of Fame
Outstanding Service Award
AABC Timeline
Quality Assurance
News & Updates
Join AABC
AABC Member Benefits
Certification
Member Locator
US Members
Canadian Members
International Members
ACG Members
Recruitment
Job Posting
Publications
National Standards for Total System Balance
Technician Training Manual
Kahoe Test & Balance
Equation Quick Guide
AABC Annual Meeting
Registration
Program
Activities
Professional Development
2026 Fall AABC TAB Technology Showcase
TAB Talk Webinars
TAB Journal
TAB Lunch & Learn
Endorsed Training
Connect with AABC
Industry Partners
Industry Partner Benefits
Advertise in TAB Journal
Webinar Sponsorship
Annual Sponsorship Opportunities
Member Portal
December 2024 AABC TAB Talk: Leakage and Deflection Testing of Air Handling Units
Step
1
of
11
9%
Name
(Required)
First
Last
Email
(Required)
How did you find this webinar?
(Required)
Search Engine or Internet Ad
Social Media (LinkedIn)
Email Marketing
Other
Why do we test?
(Required)
Specifications require testing
Unit was assembled on site
Diagnostic reasons
All of the above
What is the standard pressure for testing?
(Required)
There is no standard
8" wc
10" wc
12" wc
Is the test a positve or negative test?
(Required)
Positive
Negative
Both
Specification will dictate
Deflection limit is expressed as?
(Required)
Inch/foot
L/###
5 mm
1/2"
Things to consider when planning the test
(Required)
Is the unit operational
Is start/up complete
Are all openings seals
Are controls complete
What is a typical piece of equipment used in deflection testing.
(Required)
Flow Hood
Micrometer
Thermometer
Oriface Tube
What is a typical piece of equipent used in Leakag testing.
(Required)
Flow Hood
Micrometer
Thermometer
Oriface Tube
What % of units tested fail leakage
(Required)
10%
30%
50%
100%
Why are some leakage fans not able to perform casing leakage test
(Required)
Power may not be available
Allowable leakage may be to large
Fan may not be capable of specified static
Fan may not be accepted by engineer
What appears to be the largest culpret in unit leakage
(Required)
Field Seams
Field Blank offs
Factory Seams
Unit penetrations
Δ
