Things We Can Agree on About Ducts

1
Things We Can Agree on About Ducts

• Ducts move air from one place to another.

2
Things We Can Agree On?

• Ducts leak
• Not all leaks are equal
• Ducts should not run though unconditioned space

3
What We Can Agree On About Tests?

• There are different types of duct tests
• Not all tests are equal
• No test is completely satisfactory.

4
Types of Duct Tests

• Pressure Pan Measurements
• Blower Door Subtraction
• Duct leakage tests
• Duct Blaster tests

5
Duct Test Being Developed

• New tests are being developed
• Delta Q
• Nulling

6
Things We Ought to Know About Ducts

• Heres Jeff Tiller to tell us