ESI – Energy Saving Innovation Controls ESCTDEB ESI Controls Electronic Dual Cylinder Thermostat, White
£25.99
Price: £25.99
(as of Jun 11, 2025 14:17:28 UTC – Details)
The ESig Controls electronic dual cylinder thermostat is a revolutionary new energy saving product, developed exclusively by ESig Controls and designed for greater accuracy, more effective operation and a real homeowner safety benefit. The greatest energy and safety benefit of the ESCTDEB is the weekly one hour ‘boost’ to over 61°C, disinfecting the cylinder, killing any legionnaire disease, allowing a lower storage water temperature and satisfying a number of legal and building requirements. The hot water can be stored at any desired temperature between 25°C and 65°C, with the confidence that the weekly automatic one hour ‘boost’ to above 61°C kills any legionella bacteria, resulting in substantial energy saving. The duration of the legionella override can be adjusted from 1 to 7 days or completely disabled to operate as a conventional dual cylinder thermostat. The LCD display shows the current water temperature and the user defined water temperature, whilst the red LED indicates that the unit is calling for heat. The sensitive electronic sensors operate at a far greater accuracy than conventional oil filled mechanical thermostats, and do not need physical contact unlike traditional dual cylinder thermostats. The large dial makes it easy to set the required controller temperature (between 25°C and 65°C), whilst the second (limit) thermostat is pre-set to 80°C with a concealed manual reset, to comply with building regulations.
Energy saving product
Accurate temperature control
Clear and informative LCD display
Weekly one hour “boost” kills legionella bacteria
Easy to use and quick to install
Customers say
Customers find the thermostat accurate in temperature control and easy to install, with clear instructions for various systems. The device is easy to fit, offers good value, and customers consider it a great cylinder thermostat. However, the durability receives mixed feedback, with several customers reporting it only lasted about a month. The design also gets mixed reviews, with some customers describing it as poor.
9 reviews for ESI – Energy Saving Innovation Controls ESCTDEB ESI Controls Electronic Dual Cylinder Thermostat, White
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£25.99
Craig –
Good but not sure
This is a great unit and exactly what I wanted. Finally a thermostat that accurately lets you set the required temperature, and also tells the tank temperature all other items on the market are guess work.Easy to install and works, however the instructions are a little unclear in regards to the 1 hour boost.I have tried everything and whist the unit works perfectly when it is turned on for the first time and the one hour boost is set on it just gets to preset temp and then turns offNot sure if unit is faulty or just the one hour boost doesnât work if you set the desired temperature, not clearStill giving 5 stars as for the price itâs the best unit I have seen
Kent Lady –
Does the job!
Easy to fit and does the job!
Tommys –
ESI – Energy Saving Innovation Controls ESCTDEB ESI Controls Electronic Dual Cylinder Thermostat, Wh
– The thermostat is super easy to install, which is a huge plus. No need to call in a professional, just follow the instructions and you’re good to go.- Love how it helps save on energy bills. It’s efficient and does its job without any fuss, which is exactly what I was looking for.- The design is sleek and fits well with the decor. It doesn’t stick out like a sore thumb, which is always a bonus.- The controls are straightforward and user-friendly. No complicated settings, just simple and effective.- The temperature accuracy is spot on. It keeps the water just right, which is perfect for those chilly mornings.**What could be better:**- The display could be a bit brighter. It’s sometimes hard to read in low light, which can be a bit annoying.- Would be great if it had a Wi-Fi feature. Being able to control it remotely would add a lot of convenience.- The manual could use a bit more detail. Some parts were a bit vague, and I had to figure things out on my own.
Transport manager. –
great price
Had to ring the technical helpdesk to help with wiring, very efficient and it now works a treat.
Adam –
Neat thermostat with a good energy saving concept.
Very easy to instal and instructions were very clear for whatever system you have.Note: Someone in the reviews gave this a 2 star And it states two people found this helpful… I don’t think they understand how these systems work and probably shouldn’t have installed it themselves. They said they did not think it was right that 230V went to the com port. Com stands for common, Not Communication, Which is what I think they thought it meant. They would have seen this if they RTFM.
Kevin Hares –
Beware of limited lifespan
I bought this to replace an existing item of the same make and model. The previous item had been in operation for a little over 6 years but this item lasted less than 3 months before it stopped working. I would expect an item of this type to last for about 10 years so have concerns regarding the build quality and durability of the item.Fortunately Amazon have agreed to process a refund so Iâll get a plumber to fit a more reliable model.
Marg –
Tank thermostat
Bought to replace a similar thermostat that had gone faulty. What else to say it was installed and works. Can’t say if it was value for money all the ones we looked at were a similar price. No postage charges swayed this choice
Mr Simon Holme –
replacement thermostat
Easy to fit as a replacement
Chris (France) –
Fonctionne bien, seul le temps le dira….