Refrigerant
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Climate-Smart Refrigerants for Heat Pump Water Heaters
A look at three possible alternatives to refrigerants with high global warming potential
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How to Reduce Refrigerant Leaks from Heat Pumps
Comprehensive testing is a critical component of a leak-prevention strategy. Here are four tests to run during the installation period.
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Attaching Ducts to a Heat-Pump Water Heater
If you install this type of water heater in a small room, you’ll need to provide ductwork
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A Banned Threat to the Ozone Reappears
Scientists find evidence that a chemical phased out in 1987 is being manufactured again
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What the Pact on HFCs Will Mean for Builders
The phase-out of hydrofluorocarbons will usher in new versions of foam insulation and updated air conditioners and heat pumps — but not in the immediate future
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A Heat Pump Using Carbon Dioxide as the Refrigerant
A new generation of CO2-based heat pumps could avoid the high global warming potential of standard refrigerants and generate much higher temperatures
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EPA Warns Against Unapproved Refrigerants in Air Conditioners
Cowboys in the HVAC industry have found another way to get around the R-22 phase-out
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The Loophole and the Ozone Hole
How the EPA has let us (and the planet) down with its air conditioner regulations
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Getting a Grip on a Refrigerant Phase-Out
EPA rules will require that ozone-friendly refrigerant be used in new HVAC equipment sold after January 1, 2010. But that doesn’t mean use of ozone-depleting R-22 refrigerant will end We…
