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Technical Tips

Hey Ed, What Is the Minimum Velocity in a Duct System?

Want to find the minimum velocity in a duct system? Find out how to use Manual D to find the minimum in this edition of “Hey Ed!”

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New Safety Standard for Residential A2L Refrigeration Systems

After years of development, a new safety standard from ASHRAE has been published. Read this members-only blog to learn all about the new safety standards.

Hey Ed, Is There a Way to Evaluate the System’s Refrigerant Charge Without Connecting My Gauges?

Want to evaluate a system’s refrigerant charge without connecting any gauges? Find out how to wet-bulb for evaluation in this edition of “Hey Ed!”

Hey Ed, What is Oil Slugging?

Want to know what Oil Slugging is? Find out about compressors and oil backflow in this edition of “Hey Ed!”

Hey Ed, What is Friction Rate?

What exactly is friction rate? Learn where to find the calculation rate in this edition of “Hey Ed!”

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A Quick Reference to Reversing Valve Troubleshooting

The reversing valve is responsible for moving temperatures around. Read this blog to learn how to efficiently troubleshoot your reversing valve.

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The Right Filter – Don’t Guess at Pressure Drop

Finding the correct pressure drop is often made up rather than looked up. Ed Janowiak explains this issue and offers a solution in this blog.

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Working in the Heat Safely

In the summer, working outside can pose a serious threat. Read this blog to learn how to stay safe and cool when working outside during the summer.

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Troubleshooting a Duct System with ACCA’s Duct Slide Rule®

The ACCA Duct Slide Rule allows contractors and technicians to calculate the size of a system’s duct with friction rate. Read more at this blog.

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The Unfair Advantage

measureQuick® gives you an advantage over your competition when it comes to equipment installations. Read more about measureQuick at this blog.

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Summer’s On Fire, Yo

When the weather is this hot, HVAC technicians will be called to serve AC units quite frequently. Read this blog to see the forecast and plan accordingly.

Inching Toward Victory: GFCI Exemption for Outdoor HVAC

Nuisance trips are becoming more prevalent in recent years. A new regulation regarding GFCI protection is being passed, read this blog to learn more.

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Give Me Static!

This introduction to static pressure discusses the basic elements of vital measurements and how they can be used. You can quickly identify HVACR equipment in new or like-new condition with airflow problems. This can save you a warranty call for a burned-out motor or maybe a callback for a poorly performing duct system (or incorrect fan speed setting).

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Practice What You Preach – HVAC Inspection & Maintenance

Being consistent in your brand builds trust and improves efficiency. Consistency is essential, especially when running your maintenance calls for your clients. It’s critical that you establish trust with clients, which can lead to better customer service, improved client relations, and less customer churn. This article discusses the importance of consistency when performing HVAC maintenance and some things you can do to build better consistency.

Hey Ed, How Come the Air Coming Out of the Vent Is So Much Louder at Work Than at Home?

In this edition of “Hey Ed”, Ed discusses why the air coming out of the vent is so much louder […]

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COVID Killing Filters

New research shows that when a common antiseptic is applied to filters… they can KILL COVID-19! But, upon looking at the research, questions emerged.

Hey Ed, Which Is Heavier – Dry or Damp Air?

In this edition of “Hey Ed”, Ed discusses which is heavier – dry or damp air in Manual P.

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ACCA Energy Code Proposals Approved

Recently, the International Energy Conservation Code (IECC) Committee approved proposals submitted by ACCA for public comment. The proposals add the option of conducting a duct airflow balancing procedure per ACCA 5 QI, as well as adding ACCA Manual D, to ensure a more efficient HVAC thermal distribution system.

Hey Ed, Do Furnaces Dry Out the Air?

In this edition of “Hey Ed”, Ed discusses if furnaces dry out the air in Manual P.

Hey Ed, Is There One Measurement We Can Take, Truly Giving Us an Idea of a System’s Performance?

In this edition of “Hey Ed”, Ed discusses if there is one measurement we can take, truly giving us an […]

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