Condenser Fan Cycling Controls

Most condensing units, both residential and for refrigeration have an outdoor ambient design temperature between 60° and 100°. When the outdoor temperature falls below 60° the condensing pressure begins to fall to a point where the metering device fails to operate properly. When in the cooling mode, TXVs require a minimum pressure drop between inlet…

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Commercial Refrigeration Classes

We just wrapped up the first, of many, online video classes. We receive so many requests for DVDs we thought a video format was worth a shot. Hence, we are developing a new training site http://www.hvactraining.academy. This training is for HVAC Techs who want to take their careers to the next level. Monthly classes for…

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Attn: Contractors – I Need Your Help

Good Morning to all of my LinkedIn Connections! From time to time, a prospective HVAC tech reaches out to me for my opinion and maybe, you can help me help Michael. Here is his question:   Hi! I’m interested in getting in getting certified as an HVAC technician, and I was wondering if you’d be able to…

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HVAC Training Academy

I am proud to announce our new HVAC Training site http://www.hvactraining.academy. By summer of 2015, we will have continuing education courses for active HVAC technicians. It is simple, easy to use, video training to help take you to the next level of your career. Online learning is a great way to save time and money…

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Capillary Tubes in 15 Minutes

Great video (with our old logo). Sometimes you do not have the cap tube size recommended by the manufacturer. The following J/B conversion chart shows how much longer or shorter the replacement cap tube must be. Assume 9 feet of .040 cap tube is needed. How long would a .036 tube need to be to give…

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