At Senasys, we specialize in manufacturing high-quality HVAC high limit capillary thermostats, known for their reliability and durability. These thermostats are built on the principles of physics, making them less prone to failures compared to some electronic controls. If you come across any additional questions, please do not hesitate to contact us.

Stemco 351-254504PEM Capillary ThermostatAdvantages of Mechanical Temperature Switches in HVAC Systems

Built to Last with Fewer Headaches: Unlike their electronic counterparts, mechanical temperature switches rely on fundamental physical principles. This translates to a simpler design with fewer components that can malfunction. Think of it like a well-built grandfather clock compared to a smartphone. The mechanical switch has fewer moving parts, making it inherently more resistant to breakdowns and glitches that can plague electronic controls. This translates to reliable performance and a longer lifespan for your HVAC system.

Faster Reaction Times, Consistent Operation: Mechanical temperature switches don’t require the processing power and complex logic of electronic controls. Instead, they react directly to temperature changes in their environment. This means they can trigger equipment actions, like turning off a furnace or activating a fan, much faster. There’s no waiting for electronic components to interpret data or communicate with other parts of the system. This direct response ensures your HVAC system maintains consistent operation and reacts swiftly to prevent overheating or excessive cooling.

Additional Considerations:

  • Less Susceptible to Electrical Issues: Electronic controls can be vulnerable to power surges or electrical fluctuations. Mechanical temperature switches, on the other hand, function independently of the electrical system, making them more reliable in areas with unstable power or during storms.

  • Potentially Lower Cost: Due to their simpler design, mechanical temperature switches can be a more cost-effective option compared to some advanced electronic controls.

It’s important to note that electronic controls do offer some advantages, such as programmability and the ability to integrate with smart home systems. However, for many HVAC applications, the simplicity, reliability, and faster response times of mechanical temperature switches make them the preferred choice.

Senasys ThermostatsThe Senasys Temperature Switch Arsenal: Solutions for Every HVAC Need

We offer a comprehensive selection of temperature switches to cater to various HVAC applications:

  • Bi-metal Snap Disc Temperature Switches: These precision-made thermal sensors are ideal for room heaters, space heaters, air conditioners, and even wood stoves. They function as automatic reset limits, shutting down the appliance when temperatures surpass a predetermined set point. Visit the Senasys site for additional information.

  • Bi-metal Duct Limit Switches: Safety first! These heroes safeguard your HVAC system by halting equipment operation if the temperature inside the ductwork gets too high. Mounted on the outside of air ducts, they help prevent the spread of fire, smoke, or harmful contaminants. To learn more, visit the Firestat website.

  • Bulb and Capillary Thermostats: Senasys bulb and capillary thermostats act as either limits or controls within your HVAC equipment. They utilize a liquid-filled sensing element that expands and contracts with temperature fluctuations, triggering the opening or closing of micro switch contacts. This dependable mechanism ensures precise temperature regulation for various HVAC applications. For additional information, visit the product page.

  • Line Voltage Thermostats: Need heavy-duty control? Our line voltage thermostats are perfect for industrial heaters, barn fans, and other powerful HVAC equipment. They work similarly to bulb and capillary thermostats, activating or deactivating industrial heaters and fans, or shutting down entire systems based on temperature changes. View our Tempro site and K-Kontrol sites for more information.

At Senasys, quality and reliability are at the forefront of everything we do. Each temperature switch undergoes rigorous testing to ensure it meets the toughest industry standards. With over 25 years of experience, we are committed to providing exceptional customer service and innovative solutions to address all your HVAC temperature control needs.

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Bulb & Capillary Thermostats

Original equipment manufacturers worldwide use thermostat switches designed and manufactured by STEMCO, a Division of Senasys. No matter which style or model you choose, all of the capillary thermostat switches operate using the same physics. A fluid is encapsulated in a metal and when the temperature changes the fluid either expands or contracts. This fluid change moves a diaphragm which is in touch with a snap action switch and either opens or closes a circuit.

Ambient Compensation

Our capillary thermostats can be ambient compensated to offset the differential in temperature which keeps our thermostat controls more accurate as it’s environment changes.

Custom Options

Capillary thermostat switches built by Senasys can also be built to customer specifications. This insures you get the exact control you want without paying for features you don’t need.