CTVTF353 CTVTF353 3kw Immersion Heater replaced by CKSTF353

Product Code: CTVTF 353

This is a 3kw, 16inch immersed length Incoloy Immersion Heater complete with combined (operating & safety cut-out) plug-in thermostat and is typically used within standard unvented domestic water cylinders.. Installed products will often carry the ThermTec brand which is owned and manufactured exclusively by Heatrod Elements in Manchester. The CTVTF353 can be used in all standard domestic water areas including normal use in hard water areas susceptible to limescale. If particularly aggressive water conditions are present or the duty/usage is higher than normal then we would recommend an equivalent product with titanium element which is the CESZB335.

This item is no longer available but has been replaced by CKSTF353 which is fully compatible. Ordering of this product will lead to the supply of CKSTF353.

Both Cotherm TSE00187 and Thermowatt RTS-3 dual function thermostats can be used with this immersion heater – see our “Thermostats & Controls” section for more details and to purchase these products.

Installation Instructions for CTVTF353 can be found here.

£45.60 £38.00 (ex VAT)


Category: .

Additional information

Sheath Material

Incoloy 800

Head Size (BSP)

1.75″ BSP

Thermostat Type

Thermawatt RTS-3

Stat Inches


Element Diameter (mm)


Voltage (V)


Secondary Protection


Length (mm/Inch)


Loading (kW)


Q: Which element has replaced or is compatible for a CTVTF-340 (80) Thank you
— Asked by Dave Danns on October 26, 2016
A: Afternoon Dave, thank you for your question, it would be a CESTB 340 now, Kind Regards, Phil.

Have a Question? Submit it here!