immersion heaters boss comparison - August 2025

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Timeguard NTT03 24-Hour/7-Day Compact Electronic Immersion Heater Timeswitch,White

Timeguard

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9,9

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T-Smart Tesla Vertical Top Entry 27" Incoloy Cylinder Immersion Heater & Smart Thermostat TIHTS650

T-Smart

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9,8

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Tesla 27" Copper Immersion Heater with 2.1/4" Boss

Tesla

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9,8

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Cotherm 14" Replacement Unvented Immersion Heater Element ELE14IN800UNV

Generic

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9,7

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SPARES2GO 27" Incoloy Hard Hot Water Immersion Heater Boiler Element + Copper Pocket + Thermostat

Spares2go

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9,7

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Heatrae Sadia Megaflo HE Lower/Bottom Immersion Heater 95606963 (Complete)

Heatrae Sadia

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9,6

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Digital Programmable Timer Switch – 7 Day 16 ON/OFF, Hardwired Wall Switch, LCD Display, Mains Wired Control for Lighting, Appliances & Heaters, Energy Saving, Security Automation

LOWENERGIE

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9,5

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Tianbi Electric Immersion Water Heater, Bucket Water Heater, Household High Power Submersible Pool Bathtub Heater with Thermostat,Auto Shutoff

Tianbi

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9,5

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Tesla TIH645 14 Inch 14" Replacement Incoloy Immersion Heater with 11 Inch 11" Incoloy Thermostat 3Kw 2 1/4 Boss Anti-Corrosive

FixTheBog

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9,4

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Not Applicable 11" Immersion Heater 3kW 1 3/4" with Thermostat

Not Applicable

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9,4

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Gledhill 3kW 14" Immersion Heater SH010 (SH001)

Suitable For Gledhill Stainless Lite Unvented Cylinders

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IMMERSION HEATER CONTROLLER + BOX IMM24 By APT

Best Price Square Immersion Heater Controller Box Imm24 By Apt

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Optimum- Ecosave Economy 7 Off Peak Immersion Storage Heater Time Switch Boost Timer 24 hour time control- 230V White

Note Ensure that the On Off switch on the back of the unit is switched to On when the product is installed

~~£ 72.53~~ free shipping

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Cotherm- 1" 3/4" 3kW Titanium Immersion Heater 14" for Unvented Cylinders

DXQ

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Dual Safety 11" Immersion Heater Thermostat

IMPORTANT SIZING NOTE - Most plumbing products are measured using BSP thread dimensions which measure 1 4 inch larger than that stated, therefore this 1 Inch BSP thread actually measures 1 1 4 Inch in diameter. If your thread measures 1 Inch in diameter then you require the 3 4 Inch version of this product

~~£ 23.25~~ free shipping

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Range Spare Ts9 Immersion Heater

Range Spare TS9 immersion heater

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Essex 2 1/4 inch E2/SX Immersion Heater Boss Flange Semi Domed surface tank bio-diese

UK Made

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14" Special Double D-Bend Immersion Heater INCOLOY including 11 inch INCOLOY Thermostat BEAB Approved 3KW 2.25 BSP Dual Safety RoHS EN 60335-2-73 Approved

2.1 4 BSP brass boss

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HOTTECH - Electric Immersion Heater GR for Boiler, Electric Water Heater with Thermostat, Heating Element with Water Temperature Controller - 230 V, 3000 W, 6/4", White

PERFECT TEMPERATURE Infinitely variable temperature control with a mechanical Cotherm temperature regulator in the range of 5-75 C.

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27" Immersion Heater INCOLOY including 18 inch Copper Thermostat BEAB Approved 3KW 2.25 BSP Dual Safety RoHS EN 60335-2-73 Approved

INCOLOY & Copper

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Kingspan Flomaster Cylinder Spare 3Kw Immersion Heater

Kingspan Flomaster Cylinder Spare 3kw Immersion Heater

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DERNORD 1.5" Inch (OD50.5mm) Tri-clamp Foldback Heating Element Stainless Steel Immersion Water Heater (120V 1500W)

Easy to Install and fits Standard 1.5" Tri Clamp fitting of American

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