Articles by Joe Marchese

Ice Breaker: Using a Compressor Analyzer

A Valuable Tool to Prevent Unjustly Condemning Compresors

Too often, compressors get replaced when an external component, such as a defective start relay, start capacitor, or overload, is the true cause. A technician must always check these components before condemning the compressor.


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Ice Breaker: What is Superheat?

Defining Vapor Refrigerant Temperature and its Impact on System Performance

Measuring the evaporator’s superheat value is an important part of analyzing a system’s performance. If a lower-than-normal value is measured, too much refrigerant is entering the evaporator for the heat load. If a higher-than-normal value is measured, too little refrigerant is entering the evaporator for the heat load. 


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Ice Breaker: Correct Liquid Line Sizing

Accurate Assessment Vital for Proper Refrigeration System

Choosing the correct line size is very important to the overall success of the installation. Incorrectly sized refrigerant lines can lead to system problems, excessive energy consumption, and higher installation and operation costs.


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2015 HARDI Fly-In

Highlights from HARDI's Congressional Fly-In in Washington, D.C.

Podcasts

NEWSMakers: Clint Schreck

Clint Schreck, general manager, Columbus Worthington Air, Columbus, Ohio, discusses winning Angie’s List Super Service Award, how to handle online reviews, and much more.

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ACHRNEWS

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2015 May 25

Check out the weekly edition of The NEWS today!

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Legislation and Regulation

What legislative/regulatory issue is most important to you as a HVAC business owner?
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HVACR INDUSTRY STORE

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2015 National Plumbing & HVAC Estimator

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

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