The 9th annual North American Passive House Conference is less than a month away. You knew it's going to be in California, right? It's unfortunate that the other passive house group has chosen to use the same name PHIUS has…
Clark Howard is the penny pincher's guru. My wife loves his radio show and website for all the money-saving tips he provides. Naturally, anyone trying to help people save money at home has to address energy use, and Howard does,…
I want you to think about humidity today. Look at the photo above. What do you see? Dew drops on blades of grass. Where did that water come from? Out of the air. What was it about the air that…
August for me is dominated by Building Science Summer Camp. It's a great event with lots of learning, great discussions, and meeting friends, old and new. I'll be writing about Dr. Chris Timusk's presentation on his OSB research later and…
I listened to the IAQ Radio podcast a couple of weeks ago when they interviewed Lew Harriman and Terry Brennan, who were discussing the new moisture control guide published by the EPA last year. Brennan is the lead author of…
I've been writing some articles on ventilation for the Journal of Light Construction lately and have come across some great material. The first quote here makes the point about indoor air quality with a graphic underwear metaphor. It's from an…
Your air conditioner, heat pump, or furnace probably uses a lot of energy. Heating and cooling makes up about half of the total energy use in a typical house. For air conditioners and heat pumps using electricity generated in fossil-fuel…
And the battle over air conditioner refrigerants continues. The US EPA just issued another warning, "cautioning homeowners, manufacturers of propane-based refrigerants, home improvement contractors and air conditioning technicians of the safety hazards related to the use of propane in existing…
A line in the sand has some significance for Texas, the state where I was born. Colonel William Travis used his sword to draw such a line in the waning days of the Battle of the Alamo. As General Santa Anna…
Duct leakage is a big deal. It's one of the top three energy wasters in most homes (air leakage and cable TV set-top boxes being the other two). Researchers at Lawrence Berkeley National Lab found that duct systems leak on…