Thoughtful Termination (Of Wires)
When you are checking a unit of any kind, you should be keeping your eyes open for signs of arcing and melting at all of your wire connections and contact points. We find issues with melting terminals on contactors and in disconnects regularly. Still, We rarely think about the relationship between circuit ampacity, wire size, […]
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Introduction to Pool Heat Pumps
Air-to-water pool heat pumps are seeing more and more popularity in the climates that can support them over the more traditional gas and electric pool heaters we usually see. While they definitely contain some familiar operating principles to an air-to-air heat pump, there are some striking differences in how the heat is transferred and how […]
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Are Refrigerant Additives OK?
John Pastorello the HVAC chemist comes on the podcast and discusses acid inhibitors, oil enhancers, dyes and leak sealants with his knowledge and some things to consider.
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Short #24 – Hard vs. Soft Copper
Many technicians use hard or soft copper without thinking about which application is best for which. We talk about where to use each as well as some hanging and strapping strategies
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No, Recharging R22 Isn’t “Illegal” in the US
If you remember my recent article on the company that went to my friend's house for a PM and did nothing but leave a system quote. Well, it got worse… My friend Josh left them a D-rated review on a popular review site, and the owner of the company responded with… an apology? A bottle […]
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An Old Timer’s Trick to Get Unstuck
I once had an old commercial blower assembly on a 20-ton package unit, and the bearings and pulleys were seriously shot. I was 19 or 20, and as much as I tried, I just couldn't get the rusted hunk of metal apart. I tried penetrating oil, pullers, pry bars… I knew better than to beat […]
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