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Free Saturday Delivery on orders over £75

Product Details

Technical Specification
Manufacture ID IH230
Size (Inches) 18
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm £5 Free
Turbo usually Next Business Day before 12 noon £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 8pm Mon-Sat (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Thermostat 18" is rated 4.7 out of 5 by 16.
Rated 5 out of 5 by from Perfect replacement that fitted exactly The replacement thermostat fitted exactly into the slot in the old bottom entry immersion heater at least 30 years old!
Date published: 2019-06-03
Rated 3 out of 5 by from it works very tight fit in immersion body
Date published: 2019-04-04
Rated 5 out of 5 by from THermostat 18” I bought this to replace an overheating thermostat, easy to install, adjustable and so far works fine!
Date published: 2019-03-03
Rated 5 out of 5 by from Excellent Themostat My old immersion thermostat stopped working correctly so searched around for a good replacement. This has an excellent temperature range (most stats even on the lowest setting, heat the water so hot that cold water needs blending to cool it down again - a waste of energy) and the price is very good. Best of all Toolstation Tunstall had it in stock. Simple to fit and worked very well.
Date published: 2018-08-30
Rated 5 out of 5 by from Example: Great product Example: I bought this a month ago and am very pleased with it am glad I got two. The delivery was fast they arrived the following morning.
Date published: 2018-08-10
Rated 5 out of 5 by from Big Head Only just fitted into the gap, The head is bigger than others i have fitted but that said it did fit but only just and in one position only, Considering it did fit i will give it 5 stars , One little bonus is its rated at 15A so should be on top of the job
Date published: 2018-03-12
Rated 5 out of 5 by from Very good service Come back to buy, recomanded
Date published: 2018-01-26
Rated 5 out of 5 by from good build, solid construction bought it last week, fitted it and working just fine
Date published: 2017-12-11
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