Secure E7+ Smart Immersion Heater Timer Control Bluetooth Replacement for Horstmann Electronic 7 Economy 7 Quartz
£96.95
Price: £96.95
(as of Jun 15, 2025 09:14:41 UTC – Details)
The new E7+ from Secure is the latest version of the Electronic 7 hot water programmer. Designed to be the successor to both the Electronic 7 and the Economy 7 Quartz, it is easy to install or retrofit. Now with a new compact interface that is perfect for newer installations, as well as an adaptor plate to make retrofitting a simple matter of plug and play. The E7+ can be controlled by the Secure Bluetooth-enabled App, within a property, and there is even an optional plugin Wi-Fi card that will turn the E7+ into a truly smart unit you can control from anywhere. E7+ smart immersion heater timer is designed to control one or two 3kW immersion heaters, can also be programmed locally to provide a full tank of hot water whenever required during off-peak electricity timing. Each heater can be programmed separately for maximum energy saving and control. The E7+ is perfect for standalone control of electric hot water and uses the same app as our range of smart-capable programmable thermostats – C1727 and H3747.
Suitable for use with single, dual, or twin element immersion heaters
Bluetooth-enabled app for local control (Android and IOS) – Full smart control from anywhere with optional Wi-Fi adaptor that does not need a hub or gateway
Easy to retrofit using the provided adaptor plate and fully interchangeable with all Horstmann/Secure Economy 7 and Electronic 7 controllers
Measures estimated energy consumed for boost and off-peak in kWh via the app
Includes 7-day programmer with 3 On Offs straight from the device, more can be added via the app
Programmable boost – can be programmed so that it will heat only a small part of your tank at a set time each day
Manual Boost button – ideal for 30 minutes, 1, or 2-hour top-up without changing the set program
7 years no quibble warranty
6 reviews for Secure E7+ Smart Immersion Heater Timer Control Bluetooth Replacement for Horstmann Electronic 7 Economy 7 Quartz
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£96.95
MR D M PENGELLY –
Amazingly easy to retrofit from the old model
If you are coming from an old analouge Economy 7 Quartz (mine was Horstmann), replacing with this could not be easier!Highly recommended if you’re looking to retrofit from this older unit, really did the job!
NI SHIQING –
Ok
Good
Ehab Ahmed –
I am extremely surprised that this unit was allowed to be sold on Amazon
Hi there,I recently purchased the E7 electronic immersion programmer and the Wi-Fi extender for my boiler. An engineer came on August 16th to install it, but unfortunately, the Wi-Fi extender couldn’t connect to the router. However, the Bluetooth connection is working but slow. The engineer suspects that the Wi-Fi extender may be faulty.After contacting the support line and following their instructions, I removed the app and downloaded it again. I encountered several problems trying to log in to the new app, but Charli, the support engineer, kindly assisted me and made great efforts to resolve the issue.Unfortunately, the unit still cannot connect to the 2.4 GHz channel. I have tried several times, but it still wonât connect. Additionally, the Bluetooth connection is very slow and takes some time to establish.The main reason I purchased the unit was to have remote access, as this is a holiday home for me. I spoke with the support engineer, who advised that a replacement unit would be sent. However, when I asked who would cover the electrician’s cost, he suggested that I could install it myself. I contacted my engineer, who strongly advised against this, stating that a qualified electrician is required for the replacement.Interestingly, the unit came with a security seal stating that it must not be broken, or the item may not be eligible for a refund. Iâm concerned about how we can determine if the unit is functioning correctly without breaking the seal.In addition to the time spent trying to resolve this issue, there may be increased costs if the engineer needs to return to remove and reinstall the replacement unit. After searching online, I discovered that I am not the only one experiencing this problem, and I am extremely surprised that this unit was allowed to be sold on Amazon.The unit is currently disconnected from the system. I will provide all the engineer invoices and would like to return the unit and discuss who should be responsible for covering the engineer’s costs.Kind regards,Ehab Ahmed
john moss –
Great delivery
Can get this item cheaper but longer delivery times so when I need this quickly Amazon weâre there also this is a great retrofit for older model horstmann economy 7 timers
Kitty –
No Wi-Fi moduler
Can anyone tell me where I can buy a Wi-Fi modular for the e7
LFF12 –
Great upgrade if you have an older model
If you have an older model, this is a great upgrade path. I bought a house that had the old analogue version, the timer was broken so I could only use it on boost and had to remember to turn on the immersion. I would often forget and then realise I had no hot water for a shower at 7am.So I got this – if you are upgrading you don’t have to rewire fully. You need to isolate from the supply (turn everything off and use a volt meter to check it is off), unscrew the old box and remove the marked spade plugs. There is an adaptor plate you need to slot the new front into in order to upgrade – you don’t need the back supplied in the new timer’s box. Just connect in the spades as marked in the manual – the wires usually come with markers attached, slide over the cover and screw in.Once that is done, restore power to the box and the light should come on to setup. From there you can follow the manual and setup your phone to control using bluetooth.There is a wifi module add on for this that is handy – enables app control remotely.Unfortunately it doesn’t connect in to any of the common voice control systems which is a pity.