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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All-Electric is the Past and Future

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December 05, 2017

Since 1993 the Federal Energy Information Agency (EIA) has reported a non-stop, national growth trend in all-electric buildings, led by the Southern states at 44% of all their built homes (Figure 1). Why is all-electric growing when conventional ... [continue reading]

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

premium CONTENT
November 30, 2017

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.... [continue reading]

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Heating Loads: Upstairs Versus Downstairs

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September 06, 2017

Some time ago, my colleagues and I at Taitem Engineering observed that two-story buildings with open staircases used significantly more heat downstairs than upstairs. We saw this in two buildings. This led to further investigation ... [continue reading]

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A/C in the Southeast

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March 01, 2014

Part 1: Challenges of Cooling in Hot-Humid Climates [continue reading]

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For HVAC Contractors, Home Performance Delivers a Year-Round Blast

Author: Leah Thayer
free CONTENT
September 25, 2012

Last December’s weather was no more extreme than the norm in Tulsa, Oklahoma, where temperatures can swing from above 100°F in summer to below zero in winter. Yet for Air Solutions Heating &... [continue reading]

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179 Henry Street

Author: Dan Rieber
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August 30, 2012

A Case Study in Converting from Two-Pipe Steam to Hydronic Heating [continue reading]

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Unusual Wood-Burning Insert Installation

Author: John Krigger
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November 07, 2010

Energy expert continues to learn from a deep energy retrofit of his Montana Home. This time he's installing a wood-burning stove to save money, add ambiance, and provide security during emergencies - like when runaway trains knock out a town's power. [continue reading]

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Monitoring Results for the Factor 9 Home

Author: Rob Dumont
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September 03, 2010

Canadian building scientists and a family of four set out to build a home that uses nine times less energy than the average - and half the water. [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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