Pressure Testing, Flushing & Cleaning

The goal of any HVAC piping installation is to have a system that is designed properly and with the right materials, installed correctly, functions properly, and is readily accessible for maintenance. Proper pressure testing, flushing and cleaning is important to help ensure problem-free system performance. Before pressure testing a piping system, inline devices that may not be able to withstand test pressure, such as flow meters, pressure sensors, DPTs, etc., should be isolated or removed. Systems should be pressure tested for 2-4 hours at a minimum of 1.5 times the operating pressure. Most hydronic systems (chilled water, reheat, preheat, etc.) are tested using water. Steam and condensat

Preventive Maintenance and the Perennial Lowest-Bid Contractor: The Math, the Methodology, and Why Y

To anyone who’s ever signed a contract, common sense should dictate that choosing the lowest-bid contractor for preventive maintenance comes with a good measure of risk. With HVAC equipment accounting for more than 50% of construction costs and about two-thirds of all primary energy consumed in commercial buildings, decision makers should be aware of the financial perils that come with cutting corners on PM. That starts with understanding how low-bid contractors arrive at their too-good-to-be-true pricing, and how saving a few dollars at the outset will end up costing a bundle in the long run. As the saying goes, time is money, and chronic low-bid PM contractors tend to shave costs by cutti

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 1688 5th Street | Ewing, NJ  08638 | Tel: 609.921.1394 | Fax: 609.530.1437

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