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

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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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Fuel Use in Multifamily Buildings

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November 01, 1999

Multifamily buildings with more than five units make up about 17% of all U.S. housing, yet scant information exists on the fuel use of these building in specific locations (see "Multifamily Statistics"). [continue reading]

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Ground Source Heat Pumps Dig In

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September 01, 1999

Ground source heat pumps (sometimes called geothermal heat pumps, Geo-Exchange Systems, or GHPs) most often exchange heat with the ground by means of a ground heat exchanger. [continue reading]

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Dangerous Heater Parts Recalled

archive CONTENT
July 01, 1999

In 1997, Cadet Manufacturing in Vancouver, Washington, issued a recall notice on some of its electric in-wall heaters. The heaters contain limit switches that have been identified as a fire hazard by the U.S. Consumer Product Safety Commission (CPSC). [continue reading]

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Dangerous Heater Parts Recalled

archive CONTENT
July 01, 1999

In 1997, Cadet Manufacturing in Vancouver, Washington, issued a recall notice on some of its electric in-wall heaters. The heaters contain limit switches that have been identified as a fire hazard by the U.S. Consumer Product Safety Commission (CPSC). [continue reading]

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A Bright Future for Advanced Fireplaces

Author: Skip Hayden
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January 01, 1999

The severe ice storm of January 1998 in eastern Canada and the northeastern United States showed the benefits of efficient gas and wood fireplaces that can operate independently of electricity, and increased interest in high-performing fireplaces that supply comfortable heat during an extended power outage. [continue reading]

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Regulating Ventless Heaters

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January 01, 1998

Ventless gas heaters have seen sales take off over the past few years, buoyed by their low cost, attractive design, and high efficiency. [continue reading]

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Thermostats That Feel the Heat

Author: Tom Wilson
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November 01, 1997

Most American thermostats measure only air temperature. But there are numerous other elements that affect thermal comfort, and some of these can be used to turn HVAC equipment on and off. [continue reading]

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Do New Baseboard Thermostats Save Energy?

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March 01, 1997

Higher quality electronic line voltage thermostats (ELVTs) have been available for several years. Most models indicate temperature in degrees, and they're touted as energy savers. But how well do they work? [continue reading]

Degree Days Shuffle

Jim Gunshinan

Degree Days Shuffle

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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