Be part of the future of heating
Take part in our trial and get a£50 high street voucher1
If you have Heat Pump Plus, join our trial to increase the efficiency of your heat pump and optimise your energy use when energy is greener and cheaper.²
The trial is run in partnership with Havenwise, a UK-based company that specialises in the control and optimisation of heat pumps.
If you’ve had an email from us about the trial, you can find the sign up form there. Or you can call us on 0333 034 1565 or email [email protected] to sign up. We’re here Monday to Friday, 9am to 5pm - excluding bank holidays.
A great choice just goteven better
Joining in will pave the way for the future of heat pumps.
If you sign up, you’ll control your heat pump through the Havenwise app and Havenwise will optimise your heat pump in the background. Your home should feel just as cosy, for the same 15p/kWh rate, but will be optimised to be powered by electricity when the grid is greenest.²
How itworks
It's smart
No engineer visit needed, Havenwise optimise your heat pump remotely.
It’s simple
Havenwise will optimise your heat pump in the background based on your personal temperature settings and peak energy times.
Your comfort is really important to us
Stay warm and comfortable, while we test ways to provide greener electricity in the future.
Smarter energy and a £50 thank you voucher
If you take part in the trial, your 15p per kWh Heat Pump Plus add-on rate will stay the same. Havenwise will just optimise your heat pump to increase its efficiency and better align its operation with moments when electricity is greener² and cheaper.
You’re free to leave the trial at any point, but you’ll need to complete it to be eligible for our £50 thank you voucher. Have a read of our FAQs below to learn more.
What toexpect
1
Sign up
Check your email for our sign up form. Or call 0333 034 1565 or email [email protected] (Monday to Friday, 9am to 5pm - excluding bank holidays).
2
Havenwise app
Download the Havenwise app via the link provided to set your temperature and hot water preferences. The app usually has a £60 subscription charge but you’ll be able to access it for free for the duration of the trial.
3
Surveys
Complete an onboarding survey and then tell us how it’s going with quick monthly feedback.
Get rewarded
Towards the end of the trial, we'll be in touch to find out how you've found the experience overall. You'll get your reward soon after.
Who cantake part
If you’re interested, you’ll need to meet certain criteria for the trial. These include:
Having a compatible Vaillant aroTHERM 3 post 2016 or an aroTHERM Plus heat pump with a connected myVAILLANT Connect internet gateway.
Or a Mitsubishi Electric Ecodan Heat Pump installed from 2015 with an active MELCloud account.
Being signed up to our Heat Pump Plus add-on and being an OVO customer
Accepting the trial terms and privacy policy.
Downloading the Havenwise app and agreeing to Havenwise optimising the operation of your heat pump remotely during the trial.
For all the eligibility, please read of our trial terms. If you think you’re eligible and haven’t had an invite, get in touch at: [email protected].
This trial is inpartnership with
FAQs about the trial
Havenwise will do their best to keep your home at the temperature you set in the Havenwise app. There may be times when it feels slightly warmer or cooler. This happens because they adjust the consumption of your heat pump to save energy during high-price periods, or consume a bit more when the grid is greener.² It’s all part of the trial.
You do retain the ability to override at any point in the Havenwise app. You're always in control and will be able to tweak the settings. If the need arises, you can easily get in touch with the Havenwise team via the support button in the Havenwise app. You can also speak to Havenwise by calling 07488 600135 Mon-Fri (9am-5pm) or email [email protected].
OVO and Havenwise will collect data about your heat pump’s energy use and how your heat pump is performing during the trial. OVO will use any personal information you provide us with in accordance with our Privacy Policy. Please refer to Havenwise’s terms and conditions and privacy policy. for details of any processing of data carried out by Havenwise.
Havenwise is specialised in heat pump control and optimisation, and they work within the boundaries set by your heat pump manufacturer. They were selected as a partner for this trial due to this expertise.
If there are any disruptions or malfunctions with the system or your heat pump, Havenwise will work to resolve any problems as quickly as possible to minimise any inconvenience. Please get in touch via the support button in the Havenwise app. You can also speak to Havenwise by calling 07488 600135 Mon-Fri (9am-5pm) or email [email protected].
You’ll set your desired indoor temperature and hot water requirements in the Havenwise app, which connects with your heat pump via the internet.
Havenwise's optimisation runs continuously and determines the optimal operation of the heat pump. It takes into account your comfort settings, heat pump efficiency (or COP), building characteristics, outdoor temperature, weather forecast, and the wholesale energy prices.
It’s advanced and innovative under the hood, but simple and easy for you to use.
You’ll always be in control of your temperature schedule and your hot water requirements via the Havenwise app. Havenwise will make continuous adjustments to selected settings on your heat pump, but will always take into account your comfort.
You’re free to opt out of the trial at any time. However, please note that if you choose to leave before the trial ends, you may not qualify for the £50 voucher. You can contact us at: [email protected] to opt out. Once you’ve spoken to us, you’ll need to disable Havenwise directly in the Havenwise app to stop their optimisation.
The app usually has a £60 subscription charge but you’ll be able to access it for free for the duration of the trial.
You’ll control both heating and hot water through the Havenwise app. And Havenwise will optimise both in the background.
It’ll start once you are accepted onto the trial and end on 31 March 2026.
Important to know
¹ Customers who participate in the trial, including completing all required surveys and interviews, may receive a £50 shopping voucher at the end of the trial period. View the full terms.
² The optimisation aims to increase the efficiency of your heat pump and better align its operation with moments when the grid has more renewable energy in it. So your heat pump will consume more green energy, and less energy from fossil fuels, all while ensuring comfort.
For more information, check out Havenwise's terms and privacy policy.