duct High limit switch Applications

Firestat Duct High Limit Switches provide an added layer of protection for HVAC systems by monitoring for excessive air temperatures in ductwork. These controls use a helix bi-metal sensing element that reacts quickly to sudden temperature rises, triggering a snap-action switch to interrupt the circuit. By automatically shutting down equipment when temperatures exceed a preset threshold, Firestat switches help prevent overheating and potential system failure. Commonly installed in apartment buildings and multi-unit facilities, these controls support compliance with safety standards while protecting both equipment and occupants.

View the application notes below to explore how Firestats are implemented across different HVAC scenarios.

CERTIFICATION

Firestat Duct High Limit Controls are UL Approved and fully compliant with Section 607.3.1 of the North Carolina Mechanical Code, ensuring they meet industry standards for safety and performance.

CUSTOM OPTIONS

Firestat Duct High Limit Thermostat Switches are customizable with selectable temperature ranges, element lengths, and fixed temperature set points to meet specific HVAC application requirements.

MADE IN THE U.S.A.

Senasys temperature and limit switches are 100% tested for quality and reliability before leaving our facility, ensuring consistent performance in every application.

SAFETY

Safety is our priority. Firestat Duct High Limit Controls are an ideal solution for apartment complexes and multi-dwelling units, helping prevent hazardous conditions by monitoring and controlling overheating in HVAC air ducts.

Applications

Temperature Limit Switch for Attic Fans

If you’re looking to maintain a comfortable environment in your workshop or shed without the...
Temperature Limit Switch for Attic Fans

Material Dryer Limit Switch

Incorporating a material dryer limit switch into a grain dryer’s monitoring system offers numerous benefits...
Material Dryer Limit Switch

Kansas HVAC Building Code Compliance

Kansas HVAC building code compliance is essential for every contractor operating in Kansas City or...
Kansas HVAC Building Code Compliance

HVAC Fire Damper Requirements in Milwaukee, Wisconsin

Recently, we discovered that in the Milwaukee, Wisconsin area, some building inspectors are requiring the...
HVAC Requirements in Milwaukee Wisconsin

Firestat Safety Benefits in an Apartment Complex

The Firestat presents critical safety benefits when integrated into duct systems, primarily aiming to contain...
Duct Limit switch for apartments

Firestat Meets Duct Control Building Code Requirements

Firestat Duct Limit Switches are designed to control louvers and other shutdown devices within HVAC...
Mechanical Fire Safety Building Code