The most important Firestat safety benefit for installing into your duct system is to prevent the spread of fire and smoke in the event of a building fire.

When placed in an HVAC duct system, the Firestat senses the air temperature. Based on what temperature that device is set at, it will open the contacts when that temp is reached, and stop the fan from running and spreading the potential fire or smoke it detected to more areas of the building. The system then must be manually reset to ensure there is no danger left. Click Here to purchase your Firestat today!

We have 2 types of manual reset Firestat’s available:

  • Fixed Temperature: These come factory set at a temperature you choose of either 125F, 165F or 200F. The fixed Firestat’s come in a 5in rod length.
  • Adjustable Temperature: With these you are able to manually set your own temperature, anywhere between 100F and 250F. The adjustable Firestat’s have 3 rod lengths to choose from, 5in, 7.5in and 11in.

Both are made in the USA, Easy to install and UL approved.

Firestat Safety Benefits

One specific kind of building this type of unit benefits are apartment complexes. In the case of a fire in an apartment, the Firestat system will help to stop the spread of the fire and the smoke into other areas of the building, or to other apartments. This is a great way to help protect your apartment complex in the event a fire starts. One of the worst fears of an apartment building owner is watching their building go up in flames.

Duct High Limit Control Used in HVAC Systems

Many local and regional building codes require the use of a sensing device to shut-down the airflow in the event of a critical temperature increase in the air ducts. This code was applied to mainly multi-family dwellings that shared a common HVAC system. The theory was to contain the smoke and prevent it from spreading to multiple units.

This is why the most important Firestat safety benefit for installing us into your duct system is to prevent the spread of fire and smoke in the event of a building fire. When placed in an HVAC duct system, the Firestat senses the air temperature. Based on what temperature that device is set at, it will open the contacts when that temp is reached, and stop the fan from running and spreading the potential fire or smoke it detected to more areas of the building. The system then must be manually reset to ensure there is no danger left.

A High Limit Duct Control is one of the simplest and most cost effective ways to protect your home and apartment complexes. The device senses a preset temperature limit and opens a set of contacts shutting down any device wired into that circuit. Once tripped the device requires human intervention to apply a manual reset to close the circuit. Some of the more common circuits that are wired through a duct high limit sensor would be the fan blower motor or the main HVAC system.

Talk to a product specialist today!

CEMCO Duct Limit Switches

The Firestat Duct Fan and Limit Thermostat Switches operate using the same physics to ensure HVAC safety. A helix bi-metal element senses a rapid temperature change. When the temperature changes the bi-metal expands and triggers a snap action switch and either opens or closes a circuit. These switches are commonly installed in air ducts designed to shut down heating, air conditioning and ventilation equipment in apartment complexes and other multiple dwelling units when air temperature exceeds the set point.

UL & cUL Approved
Made in the U.S.A.