ESI - Energy Saving Innovation ControlsESRTERFW Wireless Electronic Room Thermostat with LCD Display, Multicolor

Good little thermostat easy to install I noticed somebody left a review that it does not work with a Worcester boiler I just fitted one to mine works fine you just need to wire it in right would recommend this product

Works fine a direct replacement thanks

This product looks and feels durable. Was easy to fit when replacing an existing thermostat. Let's see if it withstands the rest of time.

This product provided a very cost effective solution to provide a Room Thermostat where none existed before. It was simple to install, but it is too early to comment on its accuracy. I have not found it necessary to use their tech support so cannot comment on its standard. I feel it would be helpful if the instructions had an illustration clearly showing the position of the “pairing” black button with guidance about how to remove the control dial to access it. Although this action will not be necessary in most instances, it is an easy fix that needs better explanation.

I recently upgraded my old thermostat to this new gas boiler thermostat and I'm genuinely impressed. Installation was straightforward, with clear instructions, and it automatically synced with my boiler controller without any issues.If you want simplicity its a simple wheel with LCD temperature display

Replaced a poorly positioned wired thermostat.Easy enough to wire the receiver after a little research; the old one was just the two wires whilst this one required the neutral, which luckily was present but just cut back.The new one is quick to repond to the temperature change and the activation of the boiler is instant.It keeps the temperature very close to the set point with very little swing. No more do I find myself thinking that it's a bit on the cold side and the heating should kick in any time now!! Likewise, it doesn't overshoot the setpoint like the old one.Another good addition is the TPI setting. From my understanding this cycles the boiler on and off whilst heating as opposed to firing it constantly until the set point is reached. This reduces the amount of gas used whilst incorporating the residual warmth in the system in to the heating cycle.Very pleased with the item.

Very good value. Easy to fit and easy to use. One star off because the display doesn’t light up when you adjust, like others I have fitted, so you have to turn the lights on to set the temperature.

Simple to install and use.Not sure on value for money.But works as expected.