Thermostats for Immersion Heaters
Accurate and Safe Temperature Control for Domestic and Industrial Systems
Backer supplies a wide range of thermostats designed for use
with immersion heaters in both domestic and light industrial applications.
These include single-function, dual-function, and high-temperature models, all
built to ensure safe, reliable, and compliant operation.
Thermostats
Rod Thermostat, suitable for direct replacement
7", 11", 18" BT type thermostats
7", 11", 18" BMTS Backer Rod Thermostats with integral secondary manual cut-out
11" BP11 Backer Plug-In type Rod Thermostat quick connection with integral secondary manual cut-out
All Available Thermostats
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11" 15 amp Immersion Thermostat BT11 13082J
Regular price £12.92 GBPRegular priceUnit price per -
Diamond-H WTS Push-Fit Rod Thermostat
Regular price £27.11 GBPRegular priceUnit price per -
Thermowatt TES3412023 (red dial) Dual Function Thermostat
Regular price £15.04 GBPRegular priceUnit price per -
Thermowatt RTS-3 181316 (red dial) Dual Function Thermostat
Regular price £21.84 GBPRegular priceUnit price per -
Cotherm TSE00180 Dual Function Thermostat
Regular price £16.55 GBPRegular priceUnit price per -
Cotherm TSDO1103 Single Function Thermostat
Regular price £15.87 GBPRegular priceUnit price per -
C857 Cutout Button Stat
Regular price £7.54 GBPRegular priceUnit price per -
Cotherm TSR0009 Dual Function Thermostat
Regular price £40.65 GBPRegular priceUnit price per -
Thermowatt RTS-3 3412173 (RTS Plus) High Temperature Dual Function Thermostat
Regular price £21.84 GBPRegular priceUnit price per -
Thermowatt RTS-3 3412042 (yellow dial) Dual Function Thermostat
Regular price £21.84 GBPRegular priceUnit price per -
Cotherm TSR00014 Dual Function Thermostat
Regular price £42.14 GBPRegular priceUnit price per
Single Function Thermostats
Features
- Available in 7", 11", and 18" rod lengths
- Fixed or adjustable temperature settings
- Push-fit or wired connection options
- Designed for use in vented cylinders and basic heating systems
Advantages
- Simple and cost-effective
- Easy to install and replace
- Suitable for standard domestic water heating
Dual Function Thermostats
Features
- Combines control thermostat and manual reset safety cut-out
- Available in standard and high-temperature versions
- Compatible with vented and unvented cylinders
- Includes models such as Cotherm TSE00187, Thermowatt RTS-3, and Backer BMST
Advantages
- Enhanced safety with integrated thermal protection
- Compliant with modern water heating regulations
- Suitable for both domestic and commercial systems
High Temperature and Industrial Thermostats
Features
- Designed for high-demand or industrial environments
- Higher current ratings (up to 16A)
- Includes models like Diamond-H WTS and Cotherm TSDH1107
- Suitable for use with Incoloy and Titanium industrial heaters
Advantages
- Reliable in harsh or high-temperature conditions
- Long service life and robust construction
- Ideal for process tanks and commercial buffer systems
Cut-Out Devices and Accessories
Features
- Manual reset cut-outs for secondary safety
- Compact and easy to retrofit
- Designed to work alongside digital or external controllers
Advantages
- Adds an extra layer of protection
- Ideal for systems with external control logic
- Cost-effective safety enhancement