Tesla Incoloy Immersion Heater 11" Product Code: 53389

Suitable for hard and soft water areas. For use with copper and stainless steel cylinders.


  • Earthing Post & Cable Clamp Pre-Assembled
  • Suitable for Copper & Stainless Steel Cylinders
  • Earthing Post & Cable Clamp Pre-Assembled
  • Suitable for Copper & Stainless Steel Cylinders


EN 60335-2-73.
Additional Information
Technical Specification
  • Brand : Tesla
  • Product Length : 11 "
  • Product Type : Incoloy Immersion Heater
  • Construction Material (Plumbing) : Incoloy
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
  • CE Standard (Tested to EN...) : EN 60335-2-73.
Product Contents
Heating element and sealing washer.
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

Click here to see information on our delivery charges and times



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


Click here to see information on returns and cancellation

€24.45 Incl. 20% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
Tesla Incoloy Immersion Heater 11" is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from Difficult to remove faulty immersion element As I never replaced an immersion heater before I needed to carry out some research before replacing the element purchased from Screwfix. Luckily there was a Mod.No. on the existing unit and I ordered an equivalent element and box spanner. Some general info: Tank was small without foam insulation. Location - Soft water supply, age of faulty element 23 years. I live in a soft water area but map indicated it was medium so ordered an incoloy version. Order arrived and was time to check out how-to and review articles. To my dismay there appeared to be many problems removing faulty elements. I was a bit sceptical about this and continued with preparations. Disconnected electricity - Turned off water supply to tank with nearby stop cock - Opened hot water tap - Attempted to partially drain tank through valve at bottom of tank but because builder had not left sufficient room I was unable to connect hose to same. As thermostat pocket was leaking water I was slowly able to lower water level using a battery hydrometer to suck enough water out and to avoid spillage when I removed element. Now to removle element - Using the box spanner I unsuccessfully attempted to turn by hand. Many methods are suggested in forums and reviews and I unsuccessfully tried them all - Using extra leverage - multiple shocks using hammer blows to box spanner tommy bar - using blow torch to heat immersion boss unit (not successful as tank was nearly full with water and was cooling all very quickly) - Repeated same steps several times unsuccessfully. I was aware of multiple warnings that using too much force could damage tank. A day later and having got nowhere I was looking at my tools and I spotted a JUNIOR HACKSAW (has thin blade with many small teeth). Had a light bulb moment and decided to cut around laterally into existing element/tank fibre washer. While cutting tried to avoid saw blade coming into contact with tank mating surface. This took about 15-20 Minutes. Took care and vacuumed up the dust. Next I fitted box spanner over immersion and to my great surprise it turned using hand force only. Removed element and bits of old fibre washer. Gently cleaned up further using old wood chisel. Cleaned threads carefully. Using Boss White I coated fibre washer that was included, on both sides.. Avoided gaps in coverage and gently unto immersion boss using a screwing action. Also coated boss threads. Next I fitted immersion into tank taking great care to avoid any damage to the thread. Screwed up hand tight then fitted box spanner and hand tightened further. Reconnected electrical cable and turned on water. There is not a sign of any leaks after 3 days. The method described worked for me but may not work for everyone. Anyone with a foam insulated tank would need to remove enough foam to allow access with the JUNIOR HACKSAW.
Date published: 2019-04-19
  • y_2019, m_11, d_16, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.2
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_1
  • loc_en_GB, sid_53389, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie