HVAC contractors — both residential and commercial — place a great deal of emphasis on system maintenance and how it directly relates to lower operating and service costs. Here some HVAC contractors weigh in with tips that will prevent a lot of unnecessary chiller service or replacement.

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If you ask any successful HVAC contractor what the keys to business success are, one of the answers would certainly include a well-trained staff. 

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The homeowners wanted to maintain the integrity of the exposed wood of the home and did not want any visible signs of ducting or outlets on the interior; and no mechanical “boxes” around the exterior. What was the solution? 

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HVAC water-cooled systems require water treatment to prevent scale formation and corrosion, which is often done by using chemicals to treat the water, the company says. Scale Free Systems is a patented water treatment process that eliminates and reverses scale buildup and corrosion without the use of chemicals.

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The NEWS reports on new products found by our editors at the recent AHR Expo in Chicago. Products are listed in alphabetical order within each category.

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While the chiller is typically the most visible part of the system, other key components include chilled and condenser water pumps, cooling towers, heat exchangers, etc. This article focuses on maintaining these components “beyond the flange,” which are found in most typical building comfort cooling applications.

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The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) is moving forward with an ambitious project to identify low global warming potential (GWP) refrigerants. What does that mean?

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Providing a 12- to 15-dBa sound reduction, the Whisper Quiet Fan for the PT2 cooling tower has CTI certified thermal capacity, and is ASHRAE 90.1 compliant, says the company. The fan itself is a chemical resistant, durable, high solidity, single piece, molded fan made out of fiberglass reinforced polyester.

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An environmentally friendly product, the ScaleBlaster eliminates formation of limescale deposits in pipes, cooling towers, boilers, and other applications. The equipment is comprised of a computerized control box and a signal cable that is wrapped around the outside of the pipe.

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The DP700 is a compact brazed plate heat exchanger for chillers. According to the manufacturer, it is a compact brazed plate heat exchanger that outperforms traditional evaporators for chillers. The true-dual brazed plate heat exchanger is designed for R-410A chillers, with a cooling capacity range up to 700 kW.

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