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


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€58.95 Incl. 23% VAT

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Horstmann Centaurstat 7 Room Thermostat is rated 4.6 out of 5 by 72.
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
Rated 5 out of 5 by from Horstman First class older style thermostat.could do with backlight facility..Easy to programme. Screwfix gave a 1st class service changing a different model thermostat which became faulty after 10 days use.!
Date published: 2015-02-15
Rated 5 out of 5 by from Versatile room thermostat This is the third one I have put in various family members homes. Easy to install, 7 day programmer allows temperature to be set at different times of the day and different days. I use it to put temp up just before getting up, reduce it when we go to work, back up for evening and down when going to bed. Different settings for weekend. Simple to use with override button when needed. I've had the original one for 4 years with no hassles. Supplied batteries lasted over 3 years.
Date published: 2015-02-10
Rated 5 out of 5 by from First Class I have underfloor heating downstairs and rads up and was looking for something to replace the 2 Honeywell analogue stats I had, I looked at the Honeywell direct replacement before deciding on these ones, not least because I could buy these two for the price of one Honeywell model. I also read the reviews here and was impressed with what people were saying, Set up with the boiler always on I can control the underfloor heating by the new room stat, This is also on all the time except for the short periods of the day when the hot water fires up, I have notice already that the underfloor has only fired very infrequently as a constant temperature has been much easier to maintain. The upstairs rads are set up to come on 15 minutes before we get up and go off at the time the last of us usually takes a shower, As these times vary due to days of in the week and weekends the 7 day programmer is excellent. The only reason I have slightly marked down reliability is, as others have said, only time will tell, So far I am very pleased with my purchase.
Date published: 2015-02-07
Rated 5 out of 5 by from Ideal alternative Having been quoted over £100 for a replacement time clock for my combi boiler, fitting this unit in place of the room thermostat and leaving the time clock on permanently solved all my problems. Easily installed on a 2 wire system, it has many more features than the old time clock and is easy to program and use.
Date published: 2015-02-03
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