Freeze Event Tag

USA Coil & Air has been marketing our patented, freeze-damage water and steam coil line for over 25 years under the name Sentry Guard™. Sentry Guard™ is a one-of-a-kind invention that guarantees that any water or steam coil will not have freeze damage during a freeze event. What is a "freeze event"? Freeze events occur when chilled water, hot water, or steam heating coil has liquid in...

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Hot Water Coil

The HVAC industry has many manufacturers of units that all have heating and/or cooling coils as an integral part of their package. There are also many free-standing coils in large built up systems and some are mounted in duct runs from a central station unit. What they all have in common is the presumption that all the coils will meet the designated performance. They do...

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Sentry Guard

Operating water coils that are prone to air temperatures below freezing normally need the use of anti-freeze. The most common is glycol. This has been used for over 40 years, and there are two common types, ethylene and propylene. Anti-freeze provides a safeguard if there are mechanical or electrical breakdowns that may cause fluid to sit in a coil with below freezing air going across...

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Dirty Coil

Finned tube coils are meant to have contact with the air flow, as more contact creates more heat transfer. Heat transfer is nothing more than heat exchanged from one medium to another, and the goal is to create maximum heat transfer efficiency. The downside to this process is the coil’s susceptibility to foreign materials becoming lodged in them. The following explores this problem in a...

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Sentry Guard

Florida is known for its beautiful beaches, great weather, pristine communities, and senior traffic heading to the “Early Bird Specials”. For many, it’s considered to be paradise! The state has continued to grow every year since 1950, and its continued growth seems assured.   During the winter months in the northern and central portions of the state, old man winter still comes knocking from time to time...

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In a perfect world, most cooling coils should operate efficiently for twenty years or more. Lack of proper maintenance, inappropriate applications, corrosion, and less-than-stellar modern-day construction all affect the life expectancy of cooling coils. There are three major reasons for premature cooling coil replacement as follows:   Increased air resistance due to the plugging of the coil surface. What causes this plugging? There is an increase...

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Corrosion in Tube

There are many reasons why hot water coils in your system can under-perform. Some reasons are from the time of the design, and many other instances can also occur after the coils have been installed. Here are 10 common reasons why hot water heating coils can fail:   Air stratification issues - The air flow across the surface of the coil is not being evenly...

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Coil Delivery

Replacement coils are different than most parts of an air conditioning or heating system. Replacement coils are not in stock and will need to be fabricated. You can select thermostats, valves, fan parts, and even compressors in stock, but rarely an HVAC coil. Today, there are a lot of alternatives available to replace coils, but how many have a successful history and a precise system to...

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Santa

  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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pressure burst

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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