Duct Testing and Sealing

Question 1

Disconnected ducts must be _________ prior to duct testing.

Answer 1

Disconnected ducts must be reattached prior to duct testing.

Question 2

What is maximum allowable duct leakage to outside upon test-out for a system with a 3.5 ton compressor?

Answer 2

140 CFM25

Question 3

The ______ should be the first priority when sealing a duct system as it’s the component under the highest ______.

Answer 3

The plenum should be the first priority when sealing a duct system as it’s the component under the highest pressure.

Question 4

What is the only duct testing procedure whose results are accepted by the Energy Upgrade California program?

Answer 4

Leakage-to-outside

Question 5

A leakage-to-outside duct test requires the simultaneous operation of the ____ ____ while pressurizing the ducts.

Answer 5

blower door

Question 6

Results from a total leakage duct test are not accepted by the Energy Upgrade California program because they do not quantify _____-__-_____.

Answer 6

leakage-to-outside

Question 7

____ ____ is not an allowable duct sealing material.

Answer 7

Duct tape

Question 8

What is the minimum acceptable level of duct insulation in San Diego?

Answer 8

R-6

Question 9

Ducts located in a crawlspace must be supported at least _ inches above the earth with _ feet of spacing between supports.

Answer 9

Ducts located in a crawlspace must be supported at least 4 inches above the earth with 4 feet of spacing between supports.

Question 10

Mastic can be applied to gaps up to __” wide that are more than __ feet from the air handler.

Answer 10

Mastic can be applied to gaps up to 1/4” wide that are more than 10 feet from the air handler.