The Heatmiser thimble sensor is a precision floor temperature sensor for electric and water underfloor heating systems. Installers fit it directly into the floor, where it accurately measures surface temperature and sends data to the thermostat. As a result, the system delivers safe, efficient, and responsive heating control.
Heatmiser designed the thimble sensor to work with compatible Heatmiser thermostats. It allows the system to regulate heating based on floor temperature instead of air temperature alone. Consequently, it delivers more precise control, especially in rooms with tiled, stone, or timber flooring.
One key benefit of the Heatmiser thimble sensor is its ability to protect floor finishes. By monitoring floor temperature, it prevents overheating that could damage sensitive materials such as engineered wood or vinyl. Therefore, it plays a vital role in maintaining comfort and long-term floor durability.
A protective thimble houses the sensor, which allows quick replacement without lifting the floor. This design improves reliability and simplifies maintenance. Furthermore, it delivers accurate readings by separating the sensor from adhesives and screed.
Installation remains simple and installer-friendly. Installers position the thimble within the floor and run the sensor cable directly back to the thermostat. As a result, the sensor integrates smoothly into both new build and retrofit underfloor heating projects.
Next Working Day Delivery: Yes, we hold all our products in stock at our 7000 sq ft Nottingham warehouse and at our 3000 sq ft warehouse in Market Harborough and use DPD for a tracked next-day delivery.
Collection Available: You can always collect from our Nottingham location and help yourself to a free tea and coffee.






