Part 1: Evaluation of Mini-Split Heat Pumps as Supplemental and Full System Retrofits in a Hot-Humid Climate

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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Integrated Heating and Ventilation: Double Duty for Ducts

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May 01, 1993

Building codes in Washington state and Bonneville Power Administration's specifications for new residential construction require mechanical ventilation systems. [continue reading]

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East Meets West: Gas-Fired Heat Pumps

Author: Nance Matson
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September 01, 1992

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]

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Once Heated, Twice Used

Author: David Bohac
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July 01, 1992

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]

Degree Days Shuffle

Jim Gunshinan

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A 2015 study, “Impacts of global warming on residential heating and cooling degree-days in the United States,” comparing heating ...

Cool—and Warm—Clothing

Jim Gunshinan

Cool—and Warm—Clothing

“Why do you need to cool and heat the whole building? Why don’t you cool and heat ...

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