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Does Fiberglass Attic Insulation Really Lose R-Value?
An Oak Ridge study from the early 1990s has led to a lot of confusion
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Do High-MERV Filters Always Reduce Air Flow?
A look at the research and the real world
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Never Home Alone
This book by Rob Dunn will change the way you think about indoor environmental quality
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The Continuity Equation and Air Flow
Filters and ducts can work a lot better if HVAC designers and installers understand this simple physics formula
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Seven Reasons Your Filter Isn’t Cleaning the Air
Address these problems and you could have better indoor air quality
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Hydrostatic Pressure vs. Wicking
Testing waterproofing products to determine their effectiveness against capillary action through basement walls
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Ranking Indoor Air Pollutants
The health impact of many indoor air pollutants is coming into focus
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A Better Name for Friction Rate
Duct design is confusing enough already without having to explain why a higher friction rate is better
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Pete’s Product Puzzle: Cetco RX-101 and Sika 703
Just what function could these products serve?
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The Two Main Flaws With Kitchen Ventilation
Removing indoor air contaminants at the source is critical — but most kitchens fail at this task