Drayton Digistat +3 Room Thermostat
Drayton Digistat +3 Room Therm
This thermostat is well made and easy to fit and set up. Screwfix sells them at a very competitive price.
23 Jan 2015
The digistat relay took a bit of "nud
ging" before it finally began to switch the heating on and, compared with my previous 10 year old digistat, there seems to be quite a delay before it registers a change in room temperature.
14 Jan 2015
This thermostat is the best I've found. It doesn't show off with a big screen and LED lights, it just does it's job excellently. In my house it routinely controls to exactly the set temperature. If set to 20.0, it controls to 20.0. Not 19.9 or 20.1.
Some reviews have complained about "excessive" switching, but this is exactly how it achieves such precise control. It switches on and off again once every 15 minutes (on for a variable amount of time each time, depending how far from the desired temperature you are). This control method is called PID (google it) and is used universally used in industry for all kinds of control applications. There is nothing better.
One review mentions that the temperature reads wrongly in his house. I haven't had this problem, but the manual will tell you how to apply a temperature offset if this problem affects you.
The min max set points can be limited (great to avoid kids / non-gas-bill payers ramping up the gas bill), and if necessary the whole control can be locked to avoid any tampering at all.
29 Oct 2014
Spot on for saving energy
I bought this as an add on for my central heating and fitted it within minutes, two wire operation from boiler to the unit so bear in mind it's not wireless, however I was only going through the wall to living room, very easy to fit and does not look out of place next to light switch. You won't go wrong for price and it will save money on your heating, so it will pay for itself in 12 months.
5 Dec 2013