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Express delivery for Tuesday Available Until 4pm Tomorrow
UK Mainland Only,
3pm cut-off for Highlands and Islands
1pm for Europe


 

 

 

 

Express delivery for Tuesday Available Until 4pm Tomorrow
UK Mainland Only,
3pm cut-off for Highlands and Islands
1pm for Europe


Sentinel

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A general purpose treatment for total protection against scale and corrosion in all types of indirec..
£11.99
Ex Tax: £9.99
Flushes out flux and installation debris from new indirect central heating systems and those up to ..
£17.17
Ex Tax: £14.31
A ruthlessly efficient way to eliminate the build-up of magnetite sludge X400 is the quick and easy..
£15.58
Ex Tax: £12.98
Sentinel X800 Jetflo Ultimate Cleaner is a heavy duty cleaning formulation designed to remove corros..
£14.38
Ex Tax: £11.98
The Sentinel X100 Test Kit is a simple way to check that a system treated with Sentinel X100 Inhibit..
£4.25
Ex Tax: £3.54
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Heating Controls Online is rated 4.90 stars by Reviews.co.uk based on 2739 merchant reviews

4.90 / 5 Rating
2739 Reviews
Great service very fast got exactly what I wanted . Thank you very much I'll definitely be coming back.
Competitive price. Fast delivery. 2nd time returning customer.
We ordered a compatible central heating controller to replace ours which was over 20 years old. It arrived when promised and works perfectly.