Extra Edition

System Pumping Efficiency More Important Than Pump Efficiency

It is an accepted fact that pumps are oversized for almost all industrial and commercial installations. The tips here illustrate simple circuit flow analysis techniques to establish methods for flow balance in existing buildings and permit a considerable reduction in pump power requirements.
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Hot Topics, Cool Solutions 17: Getting Organized, And More

I run around all day fighting one fire after another and as a small contractor I need to do everything. By the end of the day, I know I've forgotten half of what I was supposed to be doing. Any suggestions?
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Checking Indoor Airflow

Indoor airflow in any air conditioning system is critical. Too much air and the customer suffers lack of dehumidification in cooling. Too little air in cooling may freeze the coil. Here are procedures on how to measure airflow.
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Specifying Adjustable Frequency Drives For Electromagnetic Compatibility

Electromagnetic compatibility (EMC) is the ability of electrical/electronic equipment to operate in its installation environment while neither causing nor experiencing electromagnetic interference (EMI). Here is a review of EMC standards and recommendations for drives specifiers.
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Selling Commercial Service Agreements - Part 4

This is the fourth and final article of a four-part series on selling commercial service agreements. This series is designed as a complete A-Z on how to sell and organize for commercial service agreements. This article discusses proposal writing strategies.
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Btu Buddy 27: A Compressor With Internal Leak

In this edition of the Btu Buddy series, Bob's cooling system service call seems to be a classic case of low charge. With Btu Buddy's help, he discovers that it's actually a compressor problem.
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Quick Facts: Superheat And Subcooling

Supeheat and subcooling are two terms that every service technician should know. Here are some quick facts on what they are and why they're important.
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Hot Topics, Cool Solutions 16: Taking Control, And More

Our trucks are a mess! Our techs look like they slept in their uniforms! I pay for all this great marketing and tell potential customers we're better than the rest and then we show up looking like the worst. What can I do?
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Energy Efficiency: The Real Thing

The Alliance to Save Energy's recent "Great Energy Efficiency Debate" in Washington included a lone HVAC representative - James Wolf of Trane. Wolf agreed to talk with The News about his panel's discussion and comment further on the issues raised.
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Oil Heat Cares Convenes First Meeting

The first board meeting of "Oil Heat Cares" convened at the recent National Association of Oil Heating Service Managers (NAOHSM) meeting. The group's purpose is to raise money and provide assistance to individuals and groups who need service or replacement of oil heating equipment.
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2014 World Energy Engineering Congress

Scenes from the 2014 World Energy Engineering Congress in Washington, D.C.

Podcasts

NEWSMakers: Ed Purvis

Emerson Climate Technologies executive president and business leader Ed Purvis discusses HVACR industry trends, the strength of the industry, and Emerson’s new innovation center. Posted on Dec. 26.

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2014 December 22

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HVAC TECHNICIAN SHORTAGE

In order to bring more people into the trade and produce more technicians, what should the industry do?
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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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