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Honeywell DT90E Digital Room Thermostat + ECO Product Code: 41365

Includes ECO button with countdown display for energy saving mode. CE marked. Conforms to protection requirements of 2006/95/EC & 2004/108/EC. WEEE & RoSH compliant.


  • Digital Display
  • Mains or Low Voltage Switching
  • 1 Year Guarantee
  • Mains or Low Voltage Switching


Switch/contact rating: SPDT. 8A. Temp. range: 5°-35°C. H x W x D: 92 x 90 x 29mm. 2 x AA batteries supplied.
Additional Information
Technical Specification
  • Brand : Honeywell
  • Product Height : 92 mm
  • Display Type : Digital Display
  • Product Type : Digital Room Thermostat + ECO
  • Zoning Level : One
  • Central Heating Control Type : Thermostats
  • Total Product Weight : 0.15 kg
  • Model No : DT90E
  • Product Width : 90 mm
  • Temperature Range : 5-35 °C
  • Product Depth : 29 mm
  • Pack Size : 1
  • Switch Type : SPDT
  • Compatible Boiler Type : All Boilers
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


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€36.95 Incl. 23% VAT

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Honeywell DT90E Digital Room Thermostat + ECO is rated 4.4 out of 5 by 97.
Rated 4 out of 5 by from Replacement Thermostat Very simple to fit to a standard wall box. If the old mechanical thermostat used a neutral wire, insulate that and only connect the incoming live and the switched live to the new unit. Temperature accuracy is much improved. I cannot comment on reliability, having only installed the unit two days ago! Some reviews have commented about switching noise - fixed to a brick wall in the hall there is absolutely no problem.
Date published: 2017-11-18
Rated 5 out of 5 by from Excellent thermostat Easy to install and to use, very accurate temperature control.
Date published: 2017-11-04
Rated 1 out of 5 by from May not be suitable for all. Some what strange design. My heating system stakes over an hour to raise the house temperature by even 1 degree. I expect a thermostat to call for heat until the set point is reached then shut off. Not so with this device. As soon as it gets to 1.5 degrees of the set point it shuts off for between 1 and 5 minutes! How does that help the house to heat up?? You can set how often this strange interruption occurs I think between 3 times an hour to 12 times an hour but as far as I can see you can’t disable it. So, where as before my heating valve would open and close a couple of times a day, now it operating may be 20 or 30 times. Even during the summer when the heating was not on, the stat is merrily clicking away a few times an hour when ever the room temp is close to the set point. I suspect this is designed for the US market ( or small apartments) where hot air type systems can rapidly heat an area but I fail to see how it can help a water based system common in the UK. On further investigation it seems the unit is designed assuming the house can be heated at a rate of 3 degrees per hour at 50% power.
Date published: 2017-10-28
Rated 5 out of 5 by from Well designed and made item Excellent performance and control setting - take care to select higher power setting if it is used to control heater directly
Date published: 2017-08-17
Rated 4 out of 5 by from Easy to install and use Easy to install as a replacement for a twisty dial analogue stat. Old stat used two cables and an earth, this just uses the two wires (L&N) so you can put the earth aside in a connector block if you want. Don't care what anyone says, the clicking of the stat turning on and off is definitely much louder than a normal stat. Would probably wake you if you had heating on using the stat in a bedroom but if it's in the hall or landing then there probably won't be an issue with that! Follow the instructions and you'll have it set up in 5 minutes!!
Date published: 2017-03-12
Rated 5 out of 5 by from At this price ... Cannot fault this product. Easy to fit, it accurately controls the room temperature and at this price is a bargain!
Date published: 2017-03-02
Rated 5 out of 5 by from Replacement Replacement for old style Easy to fit and much more reliable than a old type dial version
Date published: 2017-02-16
Rated 4 out of 5 by from Thermostat Easy to fit and set up. No problems wiring up, didn't use the instruction pictures as the wiring diagram was printed inside the unit. Old stat was a 3 wire mechanical one but this adapted perfectly well. Seems to warm the house up quite quickly and then cut in and out as required.
Date published: 2017-01-28
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