Dual Safety Thermostat 7" Product Code: 21275

Dual safety system prevents overheating problems.


Temperature range: 10-70°C. Not for use with Ariston immersion heaters.
Additional Information
Technical Specification
  • Brand : Unbranded
  • Product Length : 7 "
  • Product Type : Dual Safety Thermostat
  • Total Product Weight : 0.04 kg
  • Temperature Range : 10-70 °C
  • 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

Click here to see information on our delivery service



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.


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€12.95 Incl. 23% VAT

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Dual Safety Thermostat 7" is rated 4.0 out of 5 by 14.
Rated 5 out of 5 by from Up To Temperature In 60 Mins! Operating Holiday Rental properties throughout Wensleydale the need for a working immersion heater thermostat over the Bank Holiday weekend was critical to satisfy our guests needs for consistent hot water .. The online ordering process to collection was seamless and took less than 60 minutes to procure & fit it - Thank you for being there!
Date published: 2018-04-04
Rated 4 out of 5 by from Compare size of head with old The old thermostat I was replacing had a much smaller head than this one. So had a problem getting passed the immersion connections. To early to comment on reliability.
Date published: 2017-12-31
Rated 5 out of 5 by from plumber 1 great little replacement part comes well packaged as not to be broke in transport and fit straight in no problems nice hot water happy customers
Date published: 2017-01-04
Rated 4 out of 5 by from size of head !!! Water hardness irrelevant for this item, as NOT in contact with water. This cutout is slightly larger than old style ones, and you may find it fouls the heater terminal. If it does, you have problems.
Date published: 2016-12-23
Rated 4 out of 5 by from E7 Element stat Does the job and i always carry this one as a spare .
Date published: 2016-09-05
Rated 1 out of 5 by from Not great Thermostat keeps cutting out and needing resetting, looks like the thermostat is not working and the overheat protection is cutting in as water is very hot, even if the thermostat is turned right down to lowest setting. Have bought another one elsewhere and fitted it yesterday and all seems fine with that one so must have been unlucky and got a faulty one from screwfix.
Date published: 2016-08-22
Rated 5 out of 5 by from Good Quality item, easy to fit, well packaged in a hard tube, in stock at local branch
Date published: 2016-08-03
Rated 1 out of 5 by from Dual Safety? NO SAFETY Dual Safety? NO SAFETY more like I thought the whole point of these dual safety thermostats was that it would cut out if the thermostat failed. I had one fitted to an immersion heater on the bottom main Economy 7 off peak element. The first night it came on while the tenant was out working all night, he came back in the morning to find the whole bathroom floor covered in water. There was water everywhere. The water had been boiling and the cold water tank above the hot water tank had boiled too sending up steam which condensed on the ceiling so water was dripping off the whole ceiling. Luckily the cold water tank didn't burst or it could have been a lot worse. Need to fit a replacement but not sure if there's anything better available???
Date published: 2016-06-06
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