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⏳ Master your time, master your comfort.
The Horstmann 425 Coronet is a single channel timer designed for precise control of hot water or heating systems. Lightweight and compact, it features durable glass and plastic construction, requires no batteries, and offers straightforward installation—perfect for professionals seeking reliable, energy-efficient scheduling solutions.
| ASIN | B009JH4U9C |
| Best Sellers Rank | 1,012,597 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 3,929 in Wall Clocks |
| Brand Name | Horstmann |
| Colour | Colour May Vary |
| Customer Reviews | 4.2 4.2 out of 5 stars (111) |
| Global Trade Identification Number | 00791429115375 |
| Included Components | Timer |
| Item Type Name | Timer |
| Item Weight | 399 g |
| Manufacturer | Horstmann |
| Manufacturer Part Number | 425CORONET |
| Material Type | Glass, Plastic |
| Model Number | 425CORONET |
| UPC | 791429115375 798256198694 |
D**E
Straight replacement for old timer
Pleasantly surprised that a direct replacement for a boiler timer over 20 years old was still available. Very easy to fit - switch off the power to the unit, undo the two retaining screws on the top (just behind the front surround) and pull the top of the unit towards you. This disengages it from the baseplate, which remains in the wall. Fitting the new unit is the reverse of removing the old one. With no need to change the wall-mounted base plate, no electrical connections have to be re-made - the timer just "plugs in" as you fit it, so very easy. Once install works a treat. One small difference from the original is that it has no small neon "on" light, so if you have lost track of whether it is on or off you'll have to check to see what the boiler is doing (does it come on when you turn up the thermostat?).
G**N
Timer for oil boiler
First class. Exactly as required.
C**E
Simply, sturdy and first class
Didn't think this product would be available - but there it was. High quality materials, very well manufactured and finished* Easy to fit ( it was a replacement) and works treat. Sturdy no nonsense piece of kit. Not a bad price and very prompt delivery and very well packaged. Would recommend way-out hesitation. * Strange that it has no indicator light to ley you know when its on - the original did!
M**W
Easy to replace
This was a replacement for an old controller which had started to be noisy and intermittent at keeping time. Because it was very easy to take off the old unit and then fit this new one in place and it required no rewiring the whole job only too a few minutes. This unit comes with a 7 year warranty.
A**R
Simple and effective
Replaced existing which had worked for 21 years. Just plugged into back plate. Up and running in 5 mins. Old fashioned device but simple and effective.
M**R
Cheapest price available for this product
The time taken for dispatch was somewhat lengthy but the item is as specified, was easy to fit and is working well. It was also a good deal cheaper than buying from local stores or other suppliers.
G**T
Total rubbish only lasted about 2 and a half years and the timer failed
It works I suppose or did. No frills but poor quality. Do yourself a favour and buy a better brand previous timers have lasted 10 to 20 yrs this is rubbish. not value for money at all avoid at all costs.
W**Y
Replacement timer
Exactly similar to the old timer being replace. Easily installed and operational
Trustpilot
1 month ago
2 months ago