Dual Safety Thermostat 18" (89445)

£ 11.79INC VAT

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Dual Safety Thermostat 18" (89445)

Dual safety system prevents overheating problems. Not for use with Ariston immersion heaters.

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View all: Unbranded Immersion Heaters

£11.79INC VAT

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Dual Safety Thermostat 18" is rated 4.1 out of 5 by 100.
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Rated 5 out of 5 by from Great replacement thermostat Nicely packaged for protection. A standard 18 inch Immersion heater thermostat. The blue connection head was a bit bigger than the failed one I was replacing, but still fitted fine. The usual rapid ordering and collection service that I have come to depend on from ScrewFix...
Date published: 2021-06-11
Rated 5 out of 5 by from Thermostat Unfortunately did not fit. Shape of the head different.
Date published: 2021-05-19
Rated 5 out of 5 by from A thermostat that does the job Bought it to replace a thermostat in the hot water tank at work. It does the job and works fine. Easy to fit and install.
Date published: 2021-04-22
Rated 3 out of 5 by from It's 16.5 not 18 inches It's not 18 inches it's only 16.5 inches, so I hope it will be ok!
Date published: 2021-04-02
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What size heating element would I need for an 18” thermostat

Asked by: Maltsboy
Hello Maltsboy, These can be installed on 27", 30" and 36" elements. Thank you for using Q&A
Answered by: Cwalm
Date published: 2021-03-31

Would this be a suitable replacement for an old Thermatec thermostat, 18 inch rod with head dimensions L-3cm, W-4cm, D-3cm? Thank you

Asked by: Pr13
Hello Pr13, Yes, this could be used as a replacement. Thank you for using Q&A
Answered by: SWake
Date published: 2021-02-16

Why does the thermal cut out keep popping? I have set it to 60 degrees and everyday the thermal cut out keeps popping at some stage! What temp should it actually activate ?

Asked by: Jambooly
Hello Jambooly, The thermal cut out is separate to the thermostat setting and shouldn't trip out until about 85 degrees C. That said, the below is supplied by the manufacturer on nuisance trips: There are a number of causes of nuisance trip-outs, but often they can be cured simply by reducing the temperature setting on the thermostat. If this does not cure the problem or the resulting water temperature is not warm enough then the following should be considered: 1) The ambient temperature in the surrounding area of the immersion heater is to high. The airing cupboard door needs to have ventilation at the bottom to draw cooler air in and the roof or ceiling above the cylinder needs to be ventilated to take the hot air away. 2) The immersion heater is not fully immersed in water. This may happen due to the design of the cylinder which allows an air pocket to form below the immersion heater, or where there is a pump (e.g. power shower) and the cold-water feed is unable to maintain the water level. 3) The element has become heavily coated in limescale. The rate of limescale deposit is affected by the hardness of the water, the thermostat setting, and the amount of use, but excessive limescale has been seen in elements after less than 6 months. Reducing the temperature can help, but if you are in a hard water area we would recommend a titanium immersion heater. Thank you for using Q&A
Answered by: Cwalm
Date published: 2021-06-03

Would this one replace a old Pullin one ( now heatrae sadia)

It’s 18”
Asked by: Carloslondon
Hello Carloslondon, Yes, this could replace a Pullin thermostat. Thank you for using Q&A
Answered by: SWake
Date published: 2021-02-03

Will this replace a Sunvic VKL2401

Asked by: Jerz
Hello Jerz, Yes, this should be a suitable replacement Thank you for using Q&A AS
Answered by: ProductSupport1
Date published: 2020-08-29
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Specification
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Pieces in Pack/Case 1
Product Length 18 "
Product Type Dual Safety Thermostat
Temperature Range 20 to 70 °C