Standard Universal Thermocouple 900mm Product Code: 89191

900mm. Will fit most gas boilers.


  • Must be Fitted by a Gas Safe Registered Installer


Length: 900mm.
Additional Information
Technical Specification
  • Brand : Unbranded
  • Product Length : 900 mm
  • Product Type : Standard Universal Thermocouple
  • Boiler Accessory Type : Thermocouplers
  • Total Product Weight : 0.053 kg
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

Free delivery on all orders over €70.00

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€6.55 Incl. 23% VAT

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Standard Universal Thermocouple 900mm is rated 4.5 out of 5 by 40.
Rated 5 out of 5 by from Quick Solution Readily available for a quick repair to a very old but reliable boiler. I cannot comment on reliability after a few weeks but its been fine up to now. If its as good as the one it replaced it should be good for another ten years!
Date published: 2018-12-17
Rated 5 out of 5 by from Universal Thermocouple Standard Universal Thermocouple 900mm (89191), saw online and bought at local store and installed same day (night) perfect end to a day, about 2months ago and still working. Can recommend just make sure you have the correct fittings, although old fittings fit sometimes.
Date published: 2018-12-02
Rated 5 out of 5 by from Never without one Having an old boiler it is useful to have one just incase. Thermocouples dont last forever so if I have a boiler issue a quick call to my gas safe mate and boiler up and running again.
Date published: 2018-11-10
Rated 4 out of 5 by from Fix Boiler Pilot Collected 30 mins after I placed the order online. Exactly what I wanted. Fit perfect. Boiler is running again 1 hour later. ACE. What more can I say.
Date published: 2018-07-21
Rated 5 out of 5 by from Boiler fixed! Needed this to replace one on an ancient boiler, luckily it was the therma couple that had gone so it was an easy fix. The part was easy to order and collect and I will be using Screwfix again.
Date published: 2018-03-16
Rated 5 out of 5 by from Boiler Spare I have an old gas boiler and keep this thermocouple as spare when the pilot fails good value
Date published: 2018-03-01
Rated 5 out of 5 by from Thermocouple Great simple repair with all the fittings you need.
Date published: 2018-02-06
Rated 1 out of 5 by from Only Lasted 3 Months Back in October 2017 we had our water cylinder replaced along with a filter added to our heating system. While the plumbing firm were doing the work and had the boiler opened up I decided to fit a new thermocouple at the same time since it had not been replaced for years. Bought this one from Screwfix and all worked fine but this morning the boiler failed to fire up (no pilot light). The side of the thermocouple tip had burned right through in only 3 months so it had to be replaced again. The original thermocouple that was taken out had a thicker tip so it seems that these cheap universal ones are not as well made. I've now got a Honeywell one as a spare and that looks much more substantial at the tip too.
Date published: 2018-01-22
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