Radiant heat pump systems use hot water circulated through floors or radiators to heat a building efficiently. These systems rely on water-to-air or geothermal heat pumps to generate and regulate water temperature. When the system produces more heat than the application calls for, safety controls like snap disc thermostats can protect against overheating and equipment failure.
Our thermostats for radiant heat pump systems monitor water temperature and trigger heating or cooling components based on preset thresholds. These mechanical controls provide simple, accurate temperature regulation for residential and commercial radiant heating systems.
→ Click here to explore Snap Disc Thermostats for radiant heating or request OEM pricing.
Snap Disc Thermostats for Hydronic Radiant Systems
Snap disc thermostats contain a bimetal disc that reacts to temperature changes. As the temperature of the water in the system reaches trip point, the disc snaps to open or close the circuit. This action can:
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Cut off heating elements or pumps when the temperature exceeds safe limits
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Engage secondary safety systems to prevent damage
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Maintain controlled cycling for consistent radiant performance
Installers use snap disc thermostats in radiant heat pump systems as:
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High-limit safety controls
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Low-voltage triggers for pumps or relays
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Backup temperature cutoffs alongside electronic thermostats
Epoxy Sealed Snap Disc Thermostats for Radiant Heat Pump Systems
Senasys offers ½″ and ¾″ epoxy sealed snap disc thermostats designed for radiant heat pump systems. These thermostats act as high-limit cutoffs or temperature triggers, helping protect HVAC equipment from overheating while maintaining safe operation.
Each thermostat is sealed with epoxy to block out moisture, dust, and vibration—ideal for installations near air handlers, heat exchangers, or ductwork where environmental exposure is common.
Available Sizes
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½″ Epoxy Sealed Thermostats
Compact format suited for tight-space installations or mounting directly in airflow paths.
→ View ½″ Epoxy Sealed Thermostats -
¾″ Epoxy Sealed Thermostats
Larger size with increased thermal mass and extended cycling life for high-load systems.
→ View ¾″ Epoxy Sealed Thermostats
Key Features
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Automatic reset with SPST switching (break-on-rise or make-on-rise)
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Temperature options from -20°F to 350°F
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Rated up to 15 amps at 120V or 240V AC
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Durable epoxy-sealed housing protects internal components
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UL & cUL certified for HVAC and radiant heating applications
Use Thermostats to Protect Radiant Heating Equipment
Radiant heat pump systems operate continuously during cold months. Without mechanical high-limit controls, overheating can occur from failed relays or faulty temperature sensors. Snap disc thermostats provide a reliable backup that helps avoid:
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Equipment failure from overheating
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Floor damage caused by excessive heat
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Shortened lifespan of pumps, valves, and manifolds
Contact Us for Thermostat Solutions
We support OEMs, HVAC contractors, and system designers with technical product selection and fast fulfillment. All thermostat models are UL & cUL certified and built for long service life in demanding environments.
