Service and Maintenance - Articles - Page 9

When to Repair or Replace an Evaporator Coil

Where the leak is located may determine whether a coil can be repaired

April 12, 2023

When faced with a leaky coil on a reach-in cooler, a decision needs to be made whether to repair or replace it. The final decision may come down to where the leak is located.

Four Factors that Influence Duct Renovation

Depending on duct location, duct losses often hide oversizing

David Richardson

April 3, 2023

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Correcting a duct system on oversized equipment can be a costly mistake that you’ll regret.

Design Practices for Building and Modifying Duct Systems

HVAC ductwork: Set it and forget it, right?

Matt Jachman

March 28, 2023

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Calculated, deliberate ductwork design and construction are major factors in how effectively and efficiently a forced-air HVAC system works.

Checklists Can Help Determine What Is Causing the Problem in a Refrigeration System

Confusing High-Side Temperatures

John Tomczyk

March 22, 2023

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There are several reasons why the compressor discharge temperature of a refrigeration system can be high when the condensing temperature is not, and a checklist can help a technician figure out the root problem.

Proper Charge Is Critical for Microchannel Coils

Incorrect amount of refrigerant could reduce performance, efficiency, and reliability

Joanna R. Turpin

March 20, 2023

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Microchannel coils are lightweight, offer better heat transfer, and use less refrigerant than traditional fin-and-tube coils; however, care must be taken when charging, as even a few ounces could reduce a systems’ performance, efficiency, and reliability.

Triple Play Home Services Acquires Comfy Bear Plumbing, Heating, and Air

March 10, 2023

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Triple Play Home Services, a home service provider based out of Edmond, Oklahoma, acquired Comfy Bear Plumbing, Heating, and Air, an established HVAC and plumbing company based in Oklahoma.

Third-Annual Jobber Grants to Award $150,000 to 25 Home Service Businesses

March 9, 2023

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The Jobber grant program has helped launch, grow, and strengthen 55 home service businesses to date.

The NEWS Learns How To Braze Aluminum

Maria Taylor

Hannah Belloli

March 6, 2023

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At this year’s AHR Expo in Atlanta, Georgia, two editors from The ACHR NEWS visited Harris Products Group to learn how to braze aluminum.

Why Aluminum Coils Are Being Repaired, Not Replaced

Supply chain issues and shorter warranties are leading HVACR contractors to make more repairs

Christen Foltz

February 28, 2023

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Copper was the mainstay in HVAC and refrigeration coils until 2011, when copper prices went through the roof. As manufacturers began testing alternatives, the industry settled on aluminum as a workable, less costly option.

Diagnosing Ductless HVAC Systems

What to look for when a ductless system isn’t working right, or at all

Matt Jachman

February 21, 2023

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The use of ductless heat pump HVAC systems has broadened considerably since they were introduced to the U.S. market decades ago, but their technology isn’t familiar to all technicians or in all parts of the country.