Around Christmas and New Year’s is always the busiest time of the year for all of us. It’s truly the best time of year to share with those we care about; enjoying shopping, family time, and holiday parties. The down side is that vacations and time off over these holidays leaves most companies with skeleton crews to monitor building HVAC systems. USA Coil wants to...
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Evaporator coils are a mystery to many technicians and engineers in the HVAC industry. Evaporator coils don’t have any movable parts, and a coil can have many different capacities based on what it’s fed from the refrigerant side of the closed refrigeration loop. If a self-contained unit is used to provide air conditioning in a space, the evaporator coil will have been engineered to match the...
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Coil replacement has been a part of the HVAC aftermarket for as long as finned tube coils have been used to create heat transfer. The coils installed in the 50’s and 60’s were heavier duty than today’s coils and were almost always spiral fin type with a tension wound fin onto copper tubes. The plate fin didn’t become prevalent until the mid-60’s. By the end...
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There are numerous reasons why water and steam coils can have major freeze events. The damage is often extensive enough to require a coil replacement. The following reviews some of the major freeze event causes. Coils not drained properly when winterized – This problem may be out of your control. Many chilled water coil circuits and placement of drains makes it impossible to fully drain...
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Although there are a myriad of reasons why A/C and refrigeration systems have problems, many of them can be traced back to the “condenser coil”. An inefficient coil can cause reduced space temperatures and adverse system pressures that often lead to major component problems, including compressor failures. The title of this article comes from one of our oldest and best representatives, Marty Sternberg. Marty personally evaluates...
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Large indoor and outdoor central station air handlers eventually wear out and require either a complete refurbishment or replacement. They are usually located in ceilings, tight utility rooms, or mechanical rooms without access. Even the units that are on the roof or in a penthouse can require difficult, costly procedures to make replacement possible. ...
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