

Spotlight Article:
Part 1: Evaluation of Mini-Split Heat Pumps as Supplemental and Full System Retrofits in a Hot-Humid Climate
More stringent energy efficiency standards and the demand for higher efficiency are increasing the popularity of technologies such as mini-split heat pumps (MSHPs). The market for ductless heat pumps is growing 10–30% annually. The U....
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Don't Force Air, Go with the Flow
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In our efforts to improve forced-air distribution systems, alternatives to forced air are often overlooked, but hydronic heating systems are an attractive option that can deliver superior efficiency and comfort. [continue reading]

Integrated Heating and Ventilation: Double Duty for Ducts
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Building codes in Washington state and Bonneville Power Administration's specifications for new residential construction require mechanical ventilation systems. [continue reading]

East Meets West: Gas-Fired Heat Pumps
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As the 1990s unfold, look for a new kind of energy-efficient heating and cooling appliance-a heat pump powered by an internal combustion engine that runs on natural gas. [continue reading]

Once Heated, Twice Used
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Dual-integrated appliances-water heaters used to provide both domestic hot water and space heating-have seen increased use in recent years, primarily in the warmer climates of the mid-Atlantic states. [continue reading]

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