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Horstmann 425 Tiara Programmer

Horstmann 425 Tiara Programmer
Average Customer Rating:
4.21 out of 5
4.2
 out of 
5
Open Ratings Snapshot
Rating Breakdown 19 reviews
5 stars
11
4 stars
5
3 stars
0
2 stars
2
1 star
1
16 of 19(84%)reviewers would recommend this product.
Customer Reviews for Horstmann 425 Tiara Programmer
Review 1 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Compatable replacement.
23 Jul 2014
By Attwoods
, Loughborough
" 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.
"
3 of 3 people found this review helpful.
Review 2 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Simples
5 Oct 2013
By tinwhistle
, Manchester
" Good basic Programmer
Doddle to fit
Does what it says on the tin
"
Review 3 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Best make of heating control
25 Dec 2012
By Acker
, Frome
" This heating control box was easy to fit and easy to set for programming etc. The price was competitive and prompt delivery. "
1 of 1 people found this review helpful.
Review 4 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
5 out of 5
5 out of 5
suitable replacement
7 Sep 2012
By wcwdiy
, fife
" initial control was in place at time of initial installment over 20 years ago. so no need to alter type or company. easy to install and ideal . "
1 of 1 people found this review helpful.
Review 5 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Great Timer
15 Oct 2011
By Dtplumbing
, Bolton
" Fantastic value for money programmer. Easy to fit, all conversion wiring diagrams included. Suitable for most heating systems. "
2 of 2 people found this review helpful.
Review 6 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Basic but reliable
26 Sep 2011
By Mudmouse
, Taunton
" Great for rented properties where the tenants change regularly. No need for a manual when the times need to be changed. "
Review 7 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
4 out of 5
4 out of 5
neat and tidy
14 Jul 2011
By owlb2
, Huntingdon
" Programmer failed after 20years good service. Obtained a replacement off the shelf at local Screwfix.
Plug in fitted in seconds
Easy to programme for hot water & central heating
"
Review 8 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Did the job perfectly
1 Feb 2010
By CAEDES
, Hull
" Bought as a replacement for the same item, which had been in before I bought the house and was starting to act up. Fitted in minutes and worked instantly. No problems since.
Easy installation and good, concise instructions! "
Review 9 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Simple Replacement
15 Jan 2010
By jdo5619
, Portsmouth
" 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.
"
Review 10 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
excellent product
13 May 2009
By lizd31
, nottingham
" 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 "
Review 11 for Horstmann 425 Tiara Programmer
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Good old Screwfix
3 Nov 2008
By herbidemic
, Cheshire
" 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.
Great! "
Review 12 for Horstmann 425 Tiara Programmer
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
3 out of 5
3 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
3 out of 5
3 out of 5
Reliability: 
4 out of 5
4 out of 5
Ok programmer
14 Dec 2014
By Sparkyelectrican
, Peterborough
" A basic non digital programmer for people that don't like setting digital over complicated timers.will suit the old that have basic boiler/ pump central heating systems. "
Review 13 for Horstmann 425 Tiara Programmer
Overall Rating: 
4 out of 5
4 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
4 out of 5
4 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
HORSTMANN 425 TIARA
24 Sep 2012
By jonP1
, DERBY
" THIS ITEM WAS DELIVERED VERY PROMPTLY.AS USUAL.IT IS WORKING WELL.AND IT IS VERY EASY TO SET THE PROGRAMMES. ONLY FAULT,THERE ARE NO 'LED' LIGHT INDICATORS,TO SHOW WHEN THE PROGRAMMER IS WORKING. "
Review 14 for Horstmann 425 Tiara Programmer
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
4 out of 5
4 out of 5
Horstmann 425 Tiara Programmer
30 Sep 2011
By Anonymous
, Leeds
" In the digital age it is hard to fing an old fashioned electro-mechanical device that is easy for older people to work. This is simplicity itself to program and use and ideal for any technophobe. "
Review 15 for Horstmann 425 Tiara Programmer
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
3 out of 5
3 out of 5
Would you recommend this product? Yes
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
3 out of 5
3 out of 5
GOOD CLOCK
13 Sep 2011
By CURLY2
, Cornwall
" DID THE JOB
works fine
setting time pegs not so good.
time pegs tend to slip at times.
two channell is a good point mind,
"
Review 16 for Horstmann 425 Tiara Programmer
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
4 out of 5
4 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Just the job
2 Mar 2010
By sparksman
, wolverhampton
" This was for an elderly person to use. It was simple to operate, practical, easy to fit. Customer was very pleased. Can't really comment on reliability yet. but no reason to doubt it's quality. "
Review 17 for Horstmann 425 Tiara Programmer
Overall Rating: 
2 out of 5
2 out of 5
Value: 
3 out of 5
3 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
1 out of 5
1 out of 5
Reliability: 
1 out of 5
1 out of 5
Would you recommend this product? No
Overall Rating: 
2 out of 5
2 out of 5
Value: 
3 out of 5
3 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
1 out of 5
1 out of 5
Reliability: 
1 out of 5
1 out of 5
Horstmann Tiara 425
5 Nov 2013
By MikeASC
, Nottingham
" 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.
I would NOT recommend this product. "
Review 18 for Horstmann 425 Tiara Programmer
Overall Rating: 
2 out of 5
2 out of 5
Value: 
2 out of 5
2 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
1 out of 5
1 out of 5
Reliability: 
1 out of 5
1 out of 5
Would you recommend this product? No
Overall Rating: 
2 out of 5
2 out of 5
Value: 
2 out of 5
2 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
1 out of 5
1 out of 5
Reliability: 
1 out of 5
1 out of 5
Dubious long term
27 Oct 2009
By Proff
, Shropshire
" This item was purchased as a replacement for the same model. The earlier one failed after 2 years 2 months.
Tappets stopped switching on.
In fairness to scewfix it was not purchased from them!
It is ideal for the non digital generation but has longer term quality issues "
Review 19 for Horstmann 425 Tiara Programmer
Overall Rating: 
1 out of 5
1 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
2 out of 5
2 out of 5
Performance: 
1 out of 5
1 out of 5
Reliability: 
1 out of 5
1 out of 5
Would you recommend this product? No
Overall Rating: 
1 out of 5
1 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
2 out of 5
2 out of 5
Performance: 
1 out of 5
1 out of 5
Reliability: 
1 out of 5
1 out of 5
Poor quality. very stiff
20 Apr 2011
By Electric52
, Cheshire
" Product was bought on cost compared to other timer controllers. Performance was poor. This may have been a faulty unit but did not meet customers expectations. Slider controls were very stiff and would overshoot. Program indication was only viewable through a very small hole and the number is tiny.
Swapped unit for Danfos which performs much better.
"