Articles by David Callender

The Way You Recover R-22: Does It Save Time or Is It a Shortcut to Failure?

By David Callender
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Whether we like it or not, R-22 is going away, and technicians need to look at their best options and solutions to work with the phaseout. One option available to all competent service technicians is to recover and recycle refrigerant.


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TXV Retrofit Kits Save Energy

By David Callender
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Independent testing on three different types of residential equipment has shown a 15-26 percent increase in efficiency just by replacing the fixed-orifice-metering device with a new TXV valve. No other work was done to this equipment to increase the EER.
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2014 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

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NEWSMakers: Rajan Rajendran

Rajan Rajendran, newly appointed director of the Emerson Innovation Center, talks about the new $35 million facility and how it will function on the University of Dayton campus. Posted on Aug. 29.

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2014 September 1

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Prohibiting HFCs

EPA is proposing a rule that would prohibit some HFCs in select refrigeration applications. Do you agree with this move?
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2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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