Overcoming Obstacles to Advanced Air Sealing
We all know the basics of energy efficiency. Air seal high in the building, then low, then insulate. Seems simple, right? Stop the air from leaking into or out of the building. Save money. Increase ...
Powered attic ventilators, already suspected of using more energy than they save, can also create excess moisture, structural problems, discomfort, and combustion safety problems for home occupants, according to a recent study. [continue reading]
It is common practice in California to put ducts outside the conditioned space, in attics and crawlspaces. These duct systems are typically 50%-70% efficient due mostly to air leakage and heat transfer losses, while sealed conditioned-space duct installations have efficiencies over 90%. O [continue reading]
There are few areas of residential construction that are so commonly misunderstood as air movement within and through houses. [continue reading]
Dense-pack cellulose insulation is a very useful and cost-effective technique for lowering both conductive and convective heat losses in a variety of housing types. [continue reading]
Multifamily buildings vary widely. They range from houses divided into three apartments to 500-unit high rises. So a weatherization project must be tailored to fit the personality of the building. [continue reading]
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Energy efficiency is good for the economy, good for families, good for workers, and good for the environment.