PLEASE EMAIL THE INVENTOR AT alanderekwright@icloud.com to buy an energy storage device. You will receive a payment request for £135. Please also send photos of your hot water cylinder and you will receive personal advice specific to your installation.
Whats in the Box
WrightChoice Energy Storage Device (2025 Version)
12 Volt Transformer
24 Hour Timer
22mm Sl Coupling
Warrick and Surrey Flanges.
These flanges are not required if you install a ShowerPowerBooster system to replace a traditional ‘Power Shower”
A SP22S ShowerPowerBooster replaces any power shower and because the SP22S is more efficient you will reduce the cost of showering by 50%. See below:-
Installing the device.
Unscrew the pipework on top of the tank and set aside (remember it is clockwise to tighten and anti-clockwise to unscrew). Cutting the existing horizontal 22mm pipe and using the slip joint to reconnect later will often make things easier.
The plastic 10mm drop tube is flexible and it will avoid damage to an internal heating coil.
The device uses robust compression joints and can be tightened in the unlikely event it leaks.
After fitting check for leaks.
Starting The Device
Follow the instructions in the video.
The pump drives hot water to the bottom of the tank whilst preserving the thermocline and it maintains temperature stratification in the cylinder.
How to Use the basic Kit.
Set the 24 hour timer to activate the energy storage device only when the cheap rate electricity applies. Turn the immersion heater on and keep it on 24 hours a day. The entire tank will be heated using off peak energy. During the day at peak rate times the hot water will gently rise to the top such that the immersion heater will not draw electricity at peak rate times.
We have customers who have added complexity to the installation however having operated the system for 2 years my preference is to make it simple.
How to Use A Furado Digital Temperature Controller (Not Provided)
A Furado Digital Temperature Controller comes with a 1.7 metre cable and a temperature probe. Remove a small patch of insulation near the top of the cylinder close to the immersion heater. Place the probe close to the metal tank to record the temperature. The picture below shows a unit set to turn on the energy storage device when the temperature exceeds 60 degrees C and off when it falls to 55 degrees C.
The recorded water temperature is 65 degrees C and the maximum temperature is set by the existing immersion heater thermostat alone.
iboost and Eddie switch on the immersion heater when there is surplus PV power, or there is a cheap rate electricity window, so the 24 hour timer is redundant.
Without the energy enhancing device
Only the top of the tank is heated and 2 KW of energy is stored.
With the energy storage device
The entire tank can be heated to store 5 times the energy
After Fitting The Device
It is essential that additional insulation is added to the tank. Multiple layers of insulation foil is recommended.
Please note in the picture below that the customer has added a SP21S to the hot water supply so that his gravity hot supply to his home which was gravity hot and mains pressure cold is now mains pressure hot and cold. https://showerpowerbooster.co.uk/information/improving-pressure-flow-taps-showers-gravity-hot-mains-cold-systems/
After fitting the insulation the heat loss is reported to be as little as 2 degrees C fall in 24 hours and this is demonstrated by the picture below showing the heat loss after extra insulation is applied. We recommend that the more layers of insulation foil the better.
Integrating Solar Thermal with a WrightChoice Energy Storage Device.
The installation of a WrightChoice energy storage device allows you to turn off a gas boiler and allow 100% heating of hot water using renewable energy. The coils inside a converted hot water cylinder which allowed indirect heating of the cylinder are redundant and simply add to heat loss from the hot water cylinder.
This coil can be repurposed to bring solar thermally heated water to the hot water cylinder using an SP1. The SP1 can handle temperatures up to 100 degrees C and pressures up to 20 bars and this amazing pump will drive flow to and from multiple solar thermal panels. The SP1 is on sale now.
In 2024 my company imported top quality certificated flat plate, harp solar thermal panels from Greece and we will be putting these panels on sale and publishing more information once we have sourced a reliable solar thermal controller.
The normal retail price for these panels would be £600 each in the UK. We will be selling our solar thermal panels at a retail price £200 each in 2025.
