The first coil designed to protect itself from the cold, and it's only available from USA Coil & Air. Freeze damage is the leading cause of coil failure. It happens every winter when water or condensate freezes and expands causing internal pressure to reach dangerous levels. And if cold air is delivered across coil surfaces by a fan, freezing can happen fast, resulting in damage occurring within minutes. Until now freeze damage or bursting often lead to one repair solution - expensive and time consuming coil replacement.

Developed by USA Coil & Air, Sentry-Guard addresses the need for freeze protection by providing internal pressure relief well before catastrophic damage occurs. No other product offers this breakthrough freeze protection technology that is built into every Sentry-Guard coil.

Sentry-Guard makes freeze protection easy, reliable, and very cost-effective. No other approach to coil freeze protection offers the operating and maintenance benefits of Sentry-Guard technology. The unique design incorporates easily removable pressure relief inserts into every coil return bend of a Sentry-Guard coil. As pressure approaches design limits, a specially designed plate ruptures, releasing pressure when and where required, protecting critical coil components from damage-simply, effectively, and reliably.

Freeze severity determines how many Sentry-Guard relief inserts rupture. In all cases repair is easy. Simply unscrew the top flange and set in a replacement insert. Hand tightening is all that's needed. Replacement Sentry-Guard inserts can easily be stored on or near each coil for quick, convenient servicing.

While Sentry-Guard does not eliminate the need to winterize coils by draining or adding glycol, it offers the security of straightforward, dependable freeze damage protection unequaled in the industry today.

Protection for all coil applications- hot or cold, and all backed by a 30 Month Warranty. Heating Coils, especially for comfort applications, operate at peak levels during winter months, and can be exposed to the dangers of freezing ambient temperatures. Boiler breakdown, power failure, or improperly operating freezestats and controls are some factors which lead to freeze damage to any type of coil, regardless of location. Sentry-Guard coils are available to meet most requirements served by conventional coils in a wide range of sizes, types, and for heating, cooling and reheating.