0500 41 41 41
Cookie Reports - Screwfix Cookie Policy

View product video for Horstmann HRFS1 Programmable Room Thermostat

Horstmann HRFS1 Programmable Room Thermostat

Product Code: 93829

Electronic sensing element. Wireless. Override facility.

  • Digital Display
  • 5 On/Off Periods per Day
  • 5 / 2 Day Programmable
  • 2 Year Manufacturer's Guarantee
  • Frost Protection
  • Wireless
  • ERP Control Class: I
  • View more information

Switch/contact rating: SPDT. IP30. 8A. Temp. range: 10°-35°C. H x W x D: 116 x 100 x 23.5mm. 2 x AA batteries supplied. 60m straight line transmitter range.



Add to saved list

Available for deliveryNext Day Delivery
Available for collection from store Store Collection Check stock in your store
Page 1 of 3
Page 1 of 3
Rated 3 out of 5 by Be careful how you install it Good enough product, but unlike similar products from Sunvic and Towerstat the programmer only transmits on change of status. i.e. when the monitored temperature rises above the target temperature, or falls below it, in the first case turning the receiver off and in the second turning it on. Therefore, if the power supply to the receiver is interrupted whilst the transmitter is calling for heat, the receiver will never turn on. Other products solve this problem by periodically retransmitting their htg on/off status. Only install where uninterrupted power is guaranteed. 27 Nov 2015
Rated 1 out of 5 by Just wouldn't work Fitted one in place of the wall mounted mechanical thermostat. It would only work if the control was placed next to the receiver, tried a replacement but was just the same. Spoke to the Horstmann tech. help & tried a few things but still couldn't get it to work unless control was almost touching receiver. Tried turning off WIFI, cordless phones but still no range. Value would have been 5 stars if it worked as it was on promotion, can only give 1 star for everything as I couldn't get it working to give it a proper review. 23 Nov 2015
Rated 5 out of 5 by It solved the problem My mother’s central heating was controlled by Honeywell Y6630D Wireless Room Thermostat with Honeywell ST9100C1006 7 day time switch the latter on constant and the thermostat was altered on going to bed however mother was complaining both too cold and too hot where care workers had not set correct temperature or hall was different temperature to rooms. I fitted the Horstmann HRFS1 Programmable Room Thermostat and left it free standing so it can be moved room to room however since now set with 17°C at night and when house unoccupied and 21°C when mother is up in the house it has not moved from living room and when mother was asked if too cold or hot answer was I have not thought about it. Clearly it has worked A1. With 5 settings per day and every day independent it did take some time to set up. There are 4 dip switches which allow different options it took me around 2 hours although I am sure if I had all tools to hand it would have been faster, time includes testing and house was at 27°C when I started so took two hours to cool to temperature wanted. 30 Oct 2015
Rated 5 out of 5 by Simple to install/program This was a pretty straight forward piece of kit to install, it's been in a couple of weeks with no problem. The only slight issue I had was getting it to operate in manual mode (It always reverts to program when a time period rolls round). This doesn't matter for me but I could see it being a pain for somebody who is just after direct temperature control. Great value for money though, looks neat and seems durable. 23 Mar 2015
  • 2015-11-28 T18:52:08.849-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_55, tr_55
  • loc_en_US, sid_93829, prod, sort_default
Page : 2 3 next>
2 Questions  0 Answers

Screwfix Q&A

Ask your questions. Share your answers.

« Back
Sort by:
im just wondering what happens to the hot water or does that work separately
13 Nov 2015
Customer avatar
Read all my Q&A
0out of 0found this question helpful.
Was this helpful?Yes0No0
If possible I would like to connect the HRF1 in the same place as the existing room thermostat, if not is there a RF thermostat that can be fitted this way rather than having to connect directly to the boiler. My boiler is the Worcester Greenstar Junior 28i.
13 Nov 2015
Customer avatar
Read all my Q&A
0out of 0found this question helpful.
Was this helpful?Yes0No0
1 of 1
  • 2015-11-28 T18:49:13.456-06:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestions
  • loc_en_US, sid_93829, prod, sort_default
1 of 1


Brand Horstmann
Display Type Digital Display
IP Rating IP30
Manufacturer Guarantee 2 years
Model No HRFS1
Pack Size 1
Product Depth 23.5 mm
Product Height 116 mm
Product Type Room Thermostat
Product Width 100 mm
Programme Facility 5/2 Day Programmable
Switch Type SPDT
Temperature Range 10-35 °C
Total Product Weight 0.22 kg