The complete source for building, designing, and remodeling green homes

Musings of an Energy Nerd
All About Furnaces and Duct Systems

Most forced-air heating systems are still poorly designed and installed
Building Science
How to Install Flex Duct Properly

Following the Air Diffusion Council's standards would lead to better installations
Green Building Curmudgeon
Good Ducts, Bad Ducts

With ducts, it’s all about location, location, location
Building Science
Why Don’t More HVAC Contractors Own Duct Leakage Testers?

With new energy code and green building program requirements on the horizon, we may be reaching a tipping point
Musings of an Energy Nerd
Sealing Ducts: What’s Better, Tape or Mastic?

Make sure you choose products that provide durable sealing
Musings of an Energy Nerd
Duct Leakage Testing

For an energy-efficient forced-air system, seal seams with mastic and test with a Duct Blaster

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