Stemco Capillary Switch 

HVAC Temperature Control

Temperature switches in HVAC systems are typically mechanical controls that operate based on physics principles. Unlike electronic controllers, which rely on inputs & outputs to communicate with HVAC equipment, capillary switches react directly to environmental changes, triggering equipment adjustments in response.

Many HVAC systems prefer mechanical temperature switches because their failure modes are limited compared to electronic controls, ensuring greater reliability. For more information on how capillary switches are used for HVAC temperature control, explore the articles below.

QUALITY AMBIENT COMPENSATION

Our capillary thermostats feature ambient compensation to offset temperature differentials, ensuring greater accuracy as environmental conditions change. This technology helps maintain reliable temperature control, even in fluctuating surroundings, making our thermostat controls ideal for dynamic applications.

certified

Senasys ensures the quality control & reliable operation of all our products. Every capillary thermostat is   100% tested individually before leaving our facility to guarantee consistent performance. Our   capillary thermostats are UL & cUL approved, meeting industry standards for safety & reliability.

Custom options

Senasys capillary thermostat switches are available as custom-built temperature control solutions, tailored to meet your exact specifications. This ensures you receive the precise capillary thermostat switch you need, without paying for unnecessary features, optimizing both performance & cost.

made in the u.s.a

All Senasys products are designed, manufactured, tested, & shipped from our facilities in Eau Claire, WI to clients worldwide. Every switch is individually 100% tested for quality & performance before leaving our plant, ensuring reliable operation for every customer.

HVAC

Bulb and Capillary Thermostats in Electric Heaters

Bulb and capillary thermostats provide precise temperature control, high-limit safety protection, and remote sensing for...
Bulb and Capillary Thermostats in Electric Heaters

In Development – Temperature-Actuated Fluid Drain Valve Lockout

Prevent accidental discharge and improve equipment safety with our Temperature-Actuated Fluid Drain Valve Lockout. This...
Temperature-Actuated Fluid Drain Valve Lockout

Bulb and Capillary Switches in Fluid Heaters

The 351 Series bulb and capillary switches provide accurate temperature control in industrial fluid heaters...
Bulb and Capillary Switches in Fluid Heaters

Remote Bulb Capillary Switch for Wall Furnace Temperature Control

Wall furnaces require reliable internal temperature regulation to maintain efficient heating and avoid over-temperature conditions...
remote bulb capillary switch for wall furnace

Manual Reset Capillary Thermostats for Steam Coil Overtemperature Protection

Steam coils are used across industrial air handling units, process heating systems, and HVAC equipment...
Steam Coil Overtemperature Protection

Capillary Tube Freeze Protection Sensors for OEM Applications

Capillary tube freeze protection sensors monitor temperatures to prevent freezing in pipes, water systems, and...
Capillary tube freeze protection sensors