Horstmann Centaurstat 7 Room Thermostat Product Code: 12157

Electronic sensing element. 2-wire installation. Override facility. BS EN 60730-2-9: 1995.


  • Digital Display
  • 3 On/Off Periods per Day
  • 7 Day Programmable
  • 2 Year Manufacturer's Guarantee
  • 2-Wire Installation
  • 2-Wire Installation
  • 2 Year Manufacturer's Guarantee (T&Cs Apply)


Switch/contact rating: SPDT. IP30. 8A. Temperature range: 6°-30°C. H x W x D: 71 x 142 x 30mm. 3 x AA batteries supplied.
Additional Information
Technical Specification
  • Brand : Horstmann
  • Product Height : 71 mm
  • Display Type : Digital Display
  • Product Type : Room Thermostat
  • Programme Facility : 7 Day Programmable
  • Central Heating Control Type : Programmers
  • Model No : Centaurstat 7 Thermostat
  • Product Width : 142 mm
  • Temperature Range : 6-30 °C
  • Product Depth : 30 mm
  • Pack Size : 1
  • Switch Type : SPDT
  • Installation Type : 2-Wire Installation
  • Manufacturer Guarantee : 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

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€56.95 Incl. 20% VAT

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Horstmann Centaurstat 7 Room Thermostat is rated 4.6 out of 5 by 76.
Rated 5 out of 5 by from Cold house - Warm house We had begun to realise that our home was feeling cold, although the thermostat indicated that everything was okay. Decided to change the unit but didn't want to spend too much as we know we will be getting a new boiler in the next few years. This unit was brilliant. It was really easy to fit after a quick study of the wiring diagram and the difference in the house was remarkable.
Date published: 2019-02-21
Rated 4 out of 5 by from Easy to fit, works well. Quick and easy to fit. Seems well designed. Only confusion was that I had expected to be able to program it before I fitted the main front part onto the mounting base.. I thought it was faulty.. but the display doesn't turn on until the unit is fixed to the base. I personally would have preferred to be able to set it to 0.5degC, but the set temp can only be adjusted in whole degrees.
Date published: 2018-12-06
Rated 5 out of 5 by from Dont make my mistake.. I bought this 2 years ago but thought I'd bought a dud because on fitting the batteries the display came on momentarily then off again and stayed blank. So I put it back in the box and forgot about it till the other day when I decided to give it another go. After several attempts, I found that it does stay blank UNTIL FITTED TO THE BACKPLATE...Doh.! It is now installed in place of a 30year-old room stat. Easy to install and set up.
Date published: 2018-12-01
Rated 5 out of 5 by from Easy to fit - good value An easy to fit product and good value. Easy to use and has more features than advertised.
Date published: 2018-11-17
Rated 5 out of 5 by from Excellent value thermostat Hadn't realised my old thermostat was failing so badly until I replaced it with this unit. After investigating most of the system I worked out it had to be a new thermostat. This unit fits over a standard junction box, but only just. The instructions give a phone no to obtain a mounting pattress so that the edges of the back box are obscured, didn't try this as old thermostat was much larger so have mounted on a plywood panel until I re-decorate. The unit is very easy to install, set up and use.It also looks good in an older house. I particularly like the display of actual and target temperature - we've enough clocks in the house.
Date published: 2016-01-06
Rated 5 out of 5 by from Great Needed a replacement thermostat for a failed/ancient thermostat (external to Baxi Combi 105e). A programmable one was needed to avoid getting on knees to tweak the current-on-boiler-timings. Old control has 3 wires :- Live (wire1), Heating Load (2) and Neutral ("accelerator heater" whatever that is) (4). These mapped onto same numbered terminals on the Horstmann (more by luck than judgement I guess). Had to provide my own mounting screws for backplate. Removal of backplate from main unit was hard work (there's a side release button) but managed it in the end. Works no problem. Have to program unit next. I hope the batteries last a while...5* price, product and Screwfix. (**remember to isolate mains before performing work.**)
Date published: 2016-01-06
Rated 5 out of 5 by from Centaur 7 My worscester 24i timer was broken/failing. Bought this to by-pass timer. Thought wiring would be complicated but replaced my honeywell thermostat with the centaur 7 easily...actually same two wired system. The programming was simpler than thought.
Date published: 2015-11-01
Rated 4 out of 5 by from Works well I brought this and installed for my combi boiler. It's working well and the override button gives instant control over the heating. The only problem I had was trying to install it myself. I thought I had put the correct wires in but apparently blew the boiler fuse because I had not switched it off. Had to call a boiler engineer to install correctly. Might be worth getting a professional to install if you are considering buying one.
Date published: 2015-04-06
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