Most heating and cooling contractors have some familiarity with the blower door device - that big fan the weatherization guys and insulators plug into the doorway that sucks air from a home in order ...

It helps you determine what it will cost to heat, and what you should do to seal it up. When Greening Homes did the blower door test on my 100-year-old house before we renovated it, they couldn't even ...

Some conversations with like-minded HVAC professionals have a way of taking on a life of their own, especially when they’re from another country. I recently had a discussion with an HVAC contractor ...

With winter upon us, a favorite gadget of CNET's Martin LaMonica is a blower door, a green building tool for measuring air flow and finding leaks. Martin LaMonica is a senior writer covering green ...

As structures get more efficient, the process of finding their energy sapping weak points becomes more involved. How do you find the energy leaks in a super-efficient house? Increasingly the answer is ...