Articles by Paul Appler

Leak Detection Tools: What You Know and a Few Things You Don’t

Which Tool Is the Best? There Is No Best.
June 20, 2013
By this time, on your career path as refrigeration and air conditioning technicians, you should already be aware of all the methods used to find leaks. The choice of tool is totally up to you.


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The Good Times and Bad Times of Moisture and Sealants

September 24, 2012
The relationship between high-performance air conditioning and refrigeration (ACR) sealants and moisture is similar to a dysfunctional marriage. ACR leak sealants can’t live with moisture and they can’t live without moisture.


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Sealers: Friend or Foe

October 5, 2009
With more than 1 million sealant applications now sealing and preventing leaks in air conditioning/refrigeration systems worldwide, the odds are high most service techs will be confronted, if not already, with recovering refrigerants that have sealants in them. A common question is whether recovered refrigerant/sealant combinations will clog manifold gauges, recovery machines, etc.
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Mini Split Installation

Twin Cities contractor Aabott Ferraro helped retrofit an older St. Paul home.

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NEWSMakers: Doug Dougherty

Doug Dougherty, president and CEO of the Geothermal Exchange Organization (GEO) joins the program to discuss the latest happenings with GEO, including the drive to get included in state and federal definitions of renewable energy, plus the future of geothermal.  Posted on July 25.

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R-22 PHASEOUT POLL

Some in the industry are calling for the EPA to halt production of R-22 as of 2015. What do you think?
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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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