Set up your Mixergy App
Get set up in the Mixergy App
Registering your Cylinder
Step 1: Download the Mixergy App
Start by downloading the Mixergy App from the App Store or Google Play.
The app is where you’ll register your tank, set your heating schedule, and check your hot water levels.
Step 2: Register Your Mixergy Tank
When you open the App, you'll be asked to log in. If you have an account or have been provided with one by your housing provider, simply enter the email, password and tap 'Login'.
If you don't have an account, you'll need to create one.
- Click 'Create Account'
- Enter your details and address, then accept the Terms and Conditions.
- If your address doesn’t appear (common in new developments), please type it in manually.
- You’ll receive a verification email. Open it and click the link to confirm your account and log in the webpage version.
- Once confirmed, please return to the Mixergy App to continue setting up your tank.
- Didn’t get the email? Tap Resend Validation Email and check your junk or spam folder. Make sure to check your email and junk folder if nothing comes through.
Step 3: Add Your Tank
Once your account is created, you'll be asked to add a tank to your account. First, you'll need to add your tank details. To do this, you will require the information found on the label. This information will depend on the controller model you have.
Find your product code and controller version

Step 4: Confirm your heating type
This is usually set by your installer, but you can check in the app under Tank Settings:
- Direct Electric – heats directly using electricity
- Indirect – works with your home’s gas or oil boiler
- Heat Pump – uses a connected outdoor heat pump OR if you have a Mixergy iHP X
If you’re unsure, please contact your developer, housing provider, or installer.
Step 5: Tank Address
If your tank is located at a different address than your user account, you can specify this here.
- Same as my address - this will use the same address as your user account. It will display this address when selected.
- Different address - this will open up the postcode lookup and manual entry functions
Tank location is required for Mixergy Flex to work efficiently and accurately.
Step 6 - Timezone set up
Select the timezone where your tank is located. This ensures Mixergy Flex and energy usage are shown correctly.
It’s set to the UK timezone by default.
Step 7: Connect to the internet
To use the Mixergy app, your tank needs to be connected to the internet. If it hasn’t been connected before, follow the steps for your controller version. This usually applies if you’ve just moved in or you’re setting it up with your Installer.
Follow the instructions on screen. If you experience any connection issues at this stage, see our guidance to help you get connected.
Step 8: Sign up to Mixergy Flex
Mixergy Flex learns your hot water habits and creates an automated schedule for you, heating water at the most efficient times based on your usage and energy tariff. It also means your tank will help balance the electricity network, and eligibile homes will also be able to earn Mixergy Flex Rewards.
We recommend Standard, which balances savings with comfort.
You can change these settings at any time, or create your own Manual Schedule instead.