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HVAC to Whole-House Performance Contractor?
Guidelines and best practices for making the profitable transition into whole-house work.
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Carbon Monoxide from Ovens: A Serious IAQ Problem
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Traditionally, few people have considered gas ovens to be a major source of carbon monoxide (CO), even though all their exhaust products are often vented directly into the indoor air of a residence. Yet unvented space heaters with a similar output of combustion gases have been banned in many states because of indoor air quality (IAQ) dangers inherent in their use. [continue reading]
The Best Boiler and Water Heating Retrofits
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When the Minneapolis Energy Office (now the Center for Energy and Environment) first addressed the issue of improving energy efficiency in multifamily buildings in 1981, the task was a little daunting. [continue reading]
The Key to Persistence
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In a study funded by the U.S. Department of Energy and the Department of Housing and Urban Development, we looked at the savings persistence from equipment retrofits that Citizens Conservation Corporation (CCC) installed in low-income apartment buildings over the past decade. [continue reading]
Multifamily Retrofit, Southern Style
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Multifamily buildings in warm climates often use a lot of electricity for air conditioning, presenting excellent opportunities for energy savings. [continue reading]
"Fix-a-Flat" for Ducts
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People who seal ducts for a living are used to crawling in tight, dirty spaces, but even the lean and nimble technician will find sections of duct that are simply inaccessible or not worth the effort. A new method developed at Lawrence Berkeley Laboratory (LBL) is designed to reduce the frustrations of duct sealing, improve sealing capability, and reduce cost, time, and material requirements. [continue reading]
Bigger is Not Better: Sizing Air Conditioners Properly
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A colleague of ours (we will call him Bill) approached us at a conference seeking advice on selecting an air conditioner for his renovated home. Our recommendations included, "Be sure that the cooling load is calculated and that the air conditioner is sized to that load." [continue reading]
Macie Melendez
Adventures in Blower Door Testing
When Steve Mann (of Home Energy Services) asks you to come along for the first blower door testing in a ...
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