Domestic Immersion Heaters

Backer’s domestic immersion heaters are engineered for use in vented and unvented hot water cylinders, thermal stores,
and renewable energy systems. Available in a range of materials and configurations, they offer durability, energy efficiency, and customisation to suit all domestic water heating needs.
Full range available:
- Standard lengths - 11"-36"
- Standard rating - 3kW
- Low Wattage available - 1kW, 2kW
- Bespoke available for manufacture if special is required.
All Available Domestic Immersion Heaters
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27" 3kW 2 ¼ BSP Incoloy Immersion Heater 680027BTS
Regular price £33.12 GBPRegular priceUnit price per -
HE1 eCOHeat
Regular price From £68.66 GBPRegular priceUnit price per -
11" / 279mm Titanium Immersion Heater SH311A-CA11A1
Regular price £31.95 GBPRegular priceUnit price per -
11" 3kW 2 ¼ BSP Incoloy Immersion Heater 80011ATS
Regular price £23.34 GBPRegular priceUnit price per -
HE1.5 eCOHeat
Regular price £73.56 GBPRegular priceUnit price per -
27" 3kW 2 ¼ BSP Copper Immersion Heater D27/ANC
Regular price £34.53 GBPRegular priceUnit price per -
14" 3kW 1 ¾ BSP Titanium Immersion Heater SH314C-CA1CA1 CESZB340
Regular price £69.26 GBPRegular priceUnit price per -
11" 3kW 2 ¼ BSP Copper Immersion Heater C11ATS
Regular price £18.81 GBPRegular priceUnit price per -
27" 3kW 2 ¼ BSP Copper Immersion Heater 6C27BTS
Regular price £26.43 GBPRegular priceUnit price per -
14" 3kW 1 ¾ BSP Incoloy Immersion Heater SH314C-AA1CA1 (CESTB340)
Regular price £48.18 GBPRegular priceUnit price per -
16" 3kW 1 ¾ BSP Incoloy Immersion Heater CESTB340 PLUS
Regular price £58.72 GBPRegular priceUnit price per -
36" 3kW 2 ¼ BSP Incoloy Immersion Heater 80036BTS
Regular price £45.16 GBPRegular priceUnit price per -
11" 3kW 2 ¼ BSP Incoloy Immersion Heater SH311A-AA1HA2 ADATB327
Regular price £58.72 GBPRegular priceUnit price per -
11" 3kW 2 ¼ BSP Incoloy Immersion Heater SH311A-AA1CA1 AESTB327
Regular price £48.18 GBPRegular priceUnit price per -
14" 3kW 2 ¼ BSP Incoloy Immersion Heater 80014ATS
Regular price £30.11 GBPRegular priceUnit price per -
HE2 eCOHeat
Regular price From £70.19 GBPRegular priceUnit price per
Incoloy Immersion Heaters
- Designed for hard water areas and long
service life - Made from Incoloy 800/825 for excellent corrosion resistance
- Suitable for both horizontal and vertical installation
- Available in a wide range of lengths and thread sizes
- Compatible with dual thermostat configurations for added safety
Copper Immersion Heaters
- Ideal for soft water areas and standard
domestic use - Cost-effective and highly thermally conductive
- Available in 1½", 1¾", and 2¼" BSP thread sizes
- Compatible with a variety of thermostat types
- Suitable for vented cylinders and basic hot water systems
Titanium Immersion Heaters
- Built for aggressive or mineral-rich water conditions
- Offers maximum corrosion resistance and long-term reliability
- Suitable for specialist domestic systems and marine environments
- Compatible with standard and digital thermostats
- Ideal for premium installations or problematic water areas
eCOHeat – Low Wattage Immersion Heaters
- Designed for renewable energy systems like solar thermal and heat pumps
- Operates efficiently at 1kW–2kW for low-load applications
- Reduces energy consumption and supports off-grid or surplus energy use
- Compatible with vented and unvented cylinders
Why Choose Backer Domestic Heaters?
- UK Manufactured to the highest quality standards
- Pressure tested to 3.5 bar for safety and reliability
- IP-rated terminal covers for electrical protection
- Custom-built options available for OEM and retrofit applications