Product reviewsHortsmann Electronic 7 Digital Electric Water Heating Control

Awesome easy replacement for older unit

Awesome plug and play replacement for 20 year old quartz version. Just power off, undo two front screws, of old unit, pull the 5 labelled connectors from old front panel, and replace with those same numbered connectors of new panel. Screw new panel on. Bingo! No need to replace entire wall unit or fixed wiring.

Best part is, the new digital version allows any length ON time (and up to 3 ON periods per day). So we have set the ON time to be just 1.5 hours instead of the fixed 4.5 hours of the old mechanical unit. Much better water temperature, and less power use. May change length as winter approaches.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: delightful-uk

Recommended to cut electricity bill!

Easy to install and set up. No frayed nerves wondering if it will work, it does! Design and manufacturing quality is superb-indicates some real thought behind this device, the fact that it is also backwards compatible with the older back plate that I had already fitted some years ago made the job much much easier. Since cutting back the water heating time overnight (immersion heater) using this timer, I'm already very happy with the downward direction of my electricity bill!Read full review...

Verified purchase:  Yes | Condition: new | Sold by: delightful-uk

Easy replacement for original

This item was so easy to install.Just had to change over the numbered tabs.No need for a screwdriver (except to open the box).The free mains tester screwdriver was usefull for checking that the wireing was safe when open.Had to reset the timer and gmt switch to my requirements however .No problem as the the instructions were so comprehensive and easy to follow.This company has got it right for a replacement item.The box is of good quality and looks great.No downside to this product.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: prime-electrica...

Easy-to-install, retrofits with older control boxes

Excellent retrofit product, you don't even need to remove the old back plate and mains wiring if you didn't want to, this will directly fit and only requires 5 spade connectors to be pushed on numbered terminals and then the two securing screws for the face plate and you're done.

The only two minor neg's I can think of are that while it has a pretty green backlighting on the LCD display (temporary, when buttons are pressed) and an orange glow boost button, the small red LED timer light is extremely bright, lazer like if you looked directly at it. And the Horstmann company is being changed to Secure, and that legend makes this box look more like a burglar alarm than an immersion heater timer.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: delightful-uk

Does the job, compatible with older back box

This fit the original Horstmann back box, so just had to replace the front which my original was an early basic digital one, 22 year old plus. The numbered terminals on the new control panel matched the numbered terminals of the old back box, so just switch off the electrical supply to plug the terminals inRead full review...

Verified purchase:  Yes | Condition: new | Sold by: prime-electrica...

Replaced my broken unit

For quite a while, my previous horstmann was not doing what it should, so I thought maybe a new one would do the trick. This new one arrived and absolutely turned out to be the cats whiskers. Simply remove the top, swap the numbered plugs and you’re cooking. Brilliant! I’m no electrician, but I did this on minutes. FantasticRead full review...

Verified purchase:  Yes | Condition: new | Sold by: alert4less

Satisfactory product.

Does exactly what it should. Easy to fit, as replacement for a VERY old one.
Quite expensive but worth it if it lasts as long as the previous one!

Verified purchase:  Yes | Condition: new | Sold by: prime-electrica...

Easy to replace Old for New

The control was fitted in minutes replacing one that was 30 years old! (or thereabouts). Instructions very clear .Water heater comes on much to satisfaction of family.

Verified purchase:  Yes | Condition: new | Sold by: goltaz152

Excellent value and excellent product

Replaces exactly the old Electronic 7 unit but updates and modernises it. Took a couple of minutes to fit and set up.

Really good value

Very good time clock will buy again

Verified purchase:  Yes | Condition: pre-owned | Sold by: dazbridge