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What Causes Hydronic Pump Failure?

Manufacturers explain maintenance, assessment procedures

July 8, 2020

Designed to do their job without wavering, hydronic pumps do require maintenance to optimize their performance — even the maintenance-free ones.

Refrigerant Density Can Affect Compressor Capacity

Service techs can make adjustments to optimize performance

John Tomczyk

July 3, 2020

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Let’s look at how the density of refrigerant entering the compressor’s cylinders affects the mass flow rate of refrigerant through the compressor.

Working With an Unknown Refrigerant

This can be a difficult, and potentially costly, scenario

Joe Marchese

July 3, 2020

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When working on a refrigeration system, technicians may occasionally come across one where the type of refrigerant is unknown.

Set Outside Airflow with Fan Law Two

Adjusting outdoor duct just requires a little math

David Richardson

July 2, 2020

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With two airside measurements and a little math, you can test and even adjust an outside air duct in a few minutes.

HVAC Contractors Should Tap Into Coil Cleaning’s Visual Value

With the right equipment and technique, maintenance offers contractors a chance to show, not tell

Robert Beverly

June 17, 2020

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Coil cleaning. Glamorous? Hardly. Worth it for system performance? Absolutely.

Improve Customer Experience with These Water Heater Best Practices

Handling installations the correct way

Dustin Bowerman

June 10, 2020

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When it comes to water heater installation, a positive customer experience is key to growing your business.

Add the Airside to Your Start-Ups

Don’t forget vital steps in haste to get job done

David Richardson

June 10, 2020

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Adding the airside to an equipment start-up doesn’t have to be hard.

Troubleshooting Puzzle: A Reach-In That’s Not Maintaining Temperature

Jim Johnson

June 9, 2020

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In this month’s troubleshooting problem, the equipment is a reach-in food and beverage storage unit.

Cool and Calculated: Checkups for Chillers Lead to Longer Lifespans

Contractors with a plan and an eye on transition prove their worth beyond a maintenance agreement

Robert Beverly

June 2, 2020

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Regular maintenance and other tools can exert a major influence on whether a replacement happens closer to “sooner” or “later.”

How to Prepare Equipment for Long Shutdowns

Precautions must be taken for refrigeration and air conditioning systems

John Tomczyk

May 26, 2020

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Long shutdowns can wreak havoc on refrigeration and air conditioning systems if certain steps are not taken.

2020 June 29

In this issue, we cover ductless products for the commercial market. We also look at alternative refrigerants and trends in R-22 reclamation. Other topics include a summer forecast, business franchises, and more.

Check back for additional content throughout the week.

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