How to upgrade to a gas smart meter if I've got a large (U16) gas supply?
I have a gas meter for my flat that was originally installed in the 1970s for the whole house with seven open gas fires. The house was sub-divided into four flats in the 1980s but I ended up with the original house meter for my flat.
I would like to install a smart gas meter from OVO Energy but it will not be possible as it is not a drop in replacement.
How do I first down grade to a smaller sized standard meter?
I have a gas boiler and gas hob in the flat only. The 3 gas fires are now disconnected.
Do I need to contact National Grid?
Thanks
Nick
Best answer by Tim_OVO
Updated on 07/10/25 by Ben_OVO
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Great news that you’re keen to get a smart meter installed - there’s some great benefits in store for you!
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Firstly it’s worth mentioning that in order to get a smart meter you’ll need to make some changes to your set-up, as we don’t offer a smart meter for large (U16) gas supplies. There are rare instances where a U16 smart meter might be installed, however OVO will not be able to communicate with it remotely.
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If you no longer need a U16 meter you’ll be able to downgrade to a standard U6 gas meter.
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In order to get this process started you’ll need to arrange a gas safe engineer to carry out a maximum load test. If it’s below 64.6 kWh, a downgrade will be possible, reach out to our support team who can advise of the next steps to get this arranged and a new smart meter installed!
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OVO customer but not got a smart meter yet? -Â Book today!
Interested but not yet an OVO customer? -Â Check out our plans!
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