Articles Tagged with ''service ''

Ice Breaker: Oil Management

By Joe Marchese
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When multiple compressors are piped together with a common suction and discharge header - such as with the arrangement of a parallel rack configuration - oil return to each compressor is a major concern. Typical oil recirculation rates are dependent on three factors.
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Btu Buddy 94: A Heat Pump That's Not Getting Up to Temperature

By Bill Johnson
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Bob has gone on a service call where the customer is complaining that her house is not getting up to temperature. The house was heated with a heat pump with three stages of auxiliary strip heat. Bob removed the panel to the strip heat and found one of the units was not pulling current.
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Troubleshooting Challenge: A Heat Pump That's Not Operating

By Jim Johnson
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This troubleshooting situation is a look ahead to the upcoming cooling season. Our customer has called to say that their heat pump “isn’t cooling at all,” and while the outdoor temperature is only in the mid 80’s, it’s quite uncomfortable in the house. You find that the underlying reason is that the compressor and outdoor fan motor aren’t operating.
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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: Joseph Groh

Joseph Groh, an industry veteran boasting 35 years of HVAC experience, discusses the 2008 bicycle accident that cut his career tragically short, and how the Joseph S. Groh Foundation is his way of giving back to the construction trade. Posted on Aug. 22.

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2014 August 25

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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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