Minimize Boiler Short Cycling Losses

Boiler “short cycling” occurs when an oversized boiler quickly satisfies process or space heating demands, and then shuts down until heat is again required. This article points out the inefficiency of short cycling and provides suggested actions to maximize boiler efficiency.
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How to Avoid a Data Disaster

While hackers and viruses often garner the most attention in the realm of computer threats, many contractors overlook the ways that physical damage can adversely impact their business. Computer hardware failure, power surges, and/or damage from flood or fire could destroy years of work orders, accounting records, and more.
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Multiple Fan Systems - Fans in Series and Parallel

Sometimes it is advantageous to use more than one fan in a system. The fans may be located in close proximity to each other, or separated by quite a distance such as a supply and exhaust fan. Most often there is some compelling reason to use more than one fan in a single system.
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Considerations When Selecting a Condensing Economizer

Boilers equipped with condensing economizers can have an overall efficiency that exceeds 90 percent. A condensing economizer can increase overall heat recovery and steam system efficiency by up to 10 percent by reducing the flue gas temperature below its dew point, resulting in improved waste heat recovery.
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Consider Installing a Condensing Economizer

The key to a successful waste heat recovery project is optimizing the use of the recovered energy. By installing a condensing economizer, companies can improve overall heat recovery and steam system efficiency by up to 10 percent.
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How a Good Troubleshooter Got Results

At first, the call sounded like one we hear all the time - not enough heat in a room that had been added onto a house. The service guy told me the radiators were big enough, and that the house had an old gravity hot water system. He asked if I’d stop by to look at it.
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2015 ACCA Conference

Images from the 2015 ACCA Conference in Grapevine, Texas. Posted on April 8, 2015.


NEWSMakers: Mark Crockett
Mark Crockett vice president, Crockett Facilities Services, explains the importance of technician training, the value of being a top minority-owned company in the U.S., current projects the company is managing, and much more. Posted on April 24.
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NEWS 05-04-15 cover

2015 May 4

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Legislation and Regulation

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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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