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Horstmann HRT3 Mechanical Room Thermostat

Product Code: 23511


  • 3-Wire Installation
  • Mechanical
  • Frost Protection
  • Energy Saving Trust Approved
  • 2 Year Manufacturer's Guarantee
  • View more information

H x W x D: 80 x 80 x 35mm. Switch/contact rating: SPST IP20. 10A.


2.5455 5 11

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Horstmann HRT3 Mechanical Room Thermostat 2.5 5 11 11
Horstmann Hr3 Thermostat Great product. Installation information simple to follow. Certainly works well and meets all expectations. 26 Jan 2015
Rubbish Lasted approx. two weeks. As another reviewer said would only come on at 25+ then not at all ! You get what you pay for I suppose. 6 May 2014
Not very good As other reviewers have said, it's not very accurate - I had to set the temperature nearly 10 degrees above what was actually required and even then it still operated sporadically. I'm suspicious that the little orange neon lamp they've used (to indicate Call for Heat) actually generates enough ambient heat inside the thermostat case to affect the temperature and trip the thermostat off too early. It may be cheaper, but you get what you pay for. 3 Apr 2014
Poor Needs to be set 6-7 degrees above desired temperature. Touching the control knob switches the heating on. All in all, I sadly cannot recommend this unit at all and will replace with a superior unit. 17 Jan 2014
  • 2015-05-24T14:59:15.317-05:00
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Brand Horstmann
Installation Type 3-Wire Installation
IP Rating IP20
Manufacturer Guarantee 2 years
Model No HRT3
Pack Size 1
Product Depth 35 mm
Product Height 80 mm
Product Type Mechanical Room Thermostat
Product Width 80 mm
Switch Type SPST
Total Product Weight 109.0 kg