"I bought and fitted this timer for my mother ,who is 75 years old.i know if I bought an all singing all dancing timer I would be round at her house every day showing her how to use it and what each button did.she doesn't need a 5/2 day timer or one that knows when you're on holiday.its simple it does the job"
"I'm an electrical contractor. I was called to a house that had a Horstmann Diamond programmer built in the 60's which was now sometimes sticking. I Spoke to Horstmann technical who suggested Horstmann 425 Tiara Programmer. What an excellent choice, a breeze to install and all working o.k.. If this one lasts as long as the old Horstmann Diamond, the customer will be well happy. This item was cheaper from Screwfix than any of my electrical wholesalers. Well done Screwfix."
"Bought as a replacement for a Switchmaster 900. Job only took 30 mins before system was up and running again. Instructions even included corresponding terminal connections between the 2 models making installation a doddle. Chose a mechanical model for ease of set up.Who needs loads of settings when twice a day is sufficient."
"I have bought this to replace the exact same model which I clumsily broke when switching the advance button which is an added advantage of this product. I would not want to have another type as I have been so happy with this one for many years"
"My central heating timer control failed after 18 years of excellent service. Screwfix were able to offer me the same model which plugged into the existing socket. Back up and running in a few minutes.
"Generally a very simple to use CH programmer. Don't make the mistake of model types if you want the neon 'on' 'off' indicators which are not on this model. The step forward is a very useful function although the step numbers are difficult to see if you are installing for someone who may not have good vision."
"I was initially quite impressed by this programmer: it seemed to work satisfactorily, and appeared to be good value for money. However, after approx 18 months of operation, I experienced erratic operation of my heating system: domestic hot water (DHW) worked OK, but central heating often failed to start. (My heating system uses a motorised 3 port valve, and both DHW and CH are pumped.) After much investigation, I found that the fault was caused by intermittent closure of the DHW switch, when in the "off" position. I have dismantled the mechanism, and the fault is caused by poorly toleranced plastic in the switch leverage system.