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November 4, 2017
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Using gas whilst away, how is this possible?

  • November 4, 2017
  • 101 replies
  • 57308 views
So whilst i was away the My OVO app showed i was burning 30p a day of gas. Now i use NEST so i turned the thermostat to off before going

I have no other gas appliance so unsure what to-do, i have OVO smart meters so could they be sending false data?
Best answer by Mw2870

Updated on 13/05/26 by Chris_OVO

 

I was interested in your post as I have also been looking at my gas consumption when I am not at home since my Smart Meter was installed.

On days I am not in the house for a whole 24 hour period, MyOVO shows that the Gas cost for the day was £0.33. This seems to be consistent across the month.

This is made up of 28.77p standing charge and then 1.4 kwh of use @ 2.66p per kWH.
So 32.494p in total (I guess My OVO always rounds up in the graph).

So I was curious as to what is using the 1.4 kwh of Gas.... I have two Gas Appliances, a Vaillant Combi Boiler which does hot water and heating and a gas hob.

Now I know for sure the hob wasn't turned on, and I too have a Nest system so I know that the heating wasn't turned on at all (from the history in Nest).

So I have three theories
1) The Boiler occasionally uses a tiny bit of gas? Some sort of maintenance safety feature...
2) I have the worlds smallest gas leak
3) The meter is creeping when no gas is being used

I plan to test these theories by switching the boiler off completely and seeing if I get the same result next time I go away.

So just an update on this now that the summer is here!

The conclusion, my meter is definitely not creeping forwards on its own and it is the boiler that is using gas, even when it is not being used!


So even though I have a combi boiler, with no hot water tank and I know the heating is not being used, it still seems to used around 1kWh of Gas per day. Next time the annual service is due I will ask the plumber to see if he knows why.

So in the summer I can turn it off completely before I go away (no pilot light so easy to switch off and on), but in the Winter I will probably leave on when away as the thermostat will cut in if the temperature drops to prevent the pipes freezing and it is nice to turn the heating on when you are on your way home!

 

 

It’s very rare for smart meters to over-clock your usage, if you’re concerned about the accuracy of your meter see this guide for how to test for a faulty meter. If you’re looking at your online account, make sure you’re looking at data using meter readings, and that it’s not been estimated.

 

It’s also worth bearing in mind that even when you’re away from home your daily standing charge is still applied which might help explain the usage costs you see on your online account or OVO app (download for Android or iOS), whilst your home is empty.

 

If you are noticing minimal charges over the daily standing charge it’s possible that your boiler/pilot light uses a small amount of gas, even when your heating is switched off.

 

Not answered your question? The below topics might be helpful:
 

 

 



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101 replies

Emmanuelle_OVO
Retired Moderator
Retired Moderator
April 9, 2025

Despite not using gas at all, you are still paying a standing charge. 



A good point from ​@costeek
 

 

Renewable Energy? Big Fan.
Newcomer
September 13, 2025

My smart meter is showing £0.21/hr usage when everything is turned off, I even shut the boiler off since yesterday. 

Didn’t use the hob, no hot water and with the boiler off it doesn’t fire up randomly. 

£0.21/hr is £5.04 a day, surely standing charge isn’t that much. 

That’s like £151 a month without using anything. 

I called the emergency gas line but they said if you don’t smell anything or any hissing noise there isn’t a leakage and could be that the meter needs recalibrating. What if the leakage is outside or underground somewhere? 

Also who compensates me for this non-usage, I wonder how long this went on for…

Just fyi, all appliances turned off electricity is £0.1/hr. That seems a bit more reasonable but still high as daily standing charge for electricity is like 61p and 31p for gas I believe. 

Nukecad
Super User
Super User
September 14, 2025

Are these credit meters or are they PAYG?
(Just to check if you might be paying off a debit on a PAYG meter at so much per day).

Assuming that it’s not a PAYG meter and there is no debit charge;

When you say “smart meter” do you actually mean the meter, or do you instead mean your In Home Display Device (IHD)?

Your IHD is meant as an indication of what you are using, it is not what you are billed to.
You are billed to what the actual meter says not what the IHD says.

If you are meaning the IHD then press the button and change it from showing £’s to showing kWh.
If you are not using anything then it should show 0 kWh.
It gets that kWh usage straight from the meter, and then uses the kWh to calculate £’s.

The £’s that an IHD calculates and shows you may not be using your actual current tariff.
The IHD stores the tariff it is using internally, and sometimes that stored tariff doesn’t get updated as it should.

Which means that your IHD may have the wrong tariff programmed into it, and so show you the wrong £s.
(eg. it might not have updated itself from a couple of years ago when prices were sky high).
If it does have the wrong tariff stored then that can usually be fixed by getting customer support to send it an update command.

As you say that the electricity also appears to be showing you a wrong £’s figure then it does sound as if it may be using the wrong tariff.

If you can tell us what type you IHD is, post a photo of it here, then someone can tell you how to check the tariff it’s is using etc.

PS. What does your actual ‘live’ billing say, either online or in the app?
Those will use your current tariff, so will be more accurate than the IHD.
Either one will also tell you what your actual tariff rates and standing charges are.

 

I said, Hey - Watts going on.
Abby_OVO
Community Manager
Community Manager
September 15, 2025

Hey ​@weso 

 

I’m glad to see one of our helpful users Nukecad has already stopped by with some helpful advice and questions here in order to also try and help further.

 

If you could clarify where it is you’re seeing these figures, we’ll be able to better assist if there’s a problem. The following topics may be of use to you here:

 

 

If you could answer some of the questions Nukecad asked above, we’ll try our best to point you in the best direction of what to do next.

Currently Playing: She's Electric
Newcomer
November 5, 2025

I don’t know what’s going on but I’ve gone from an average daily gas use of around 2.5kWh each day for the past three months to suddenly the past week my account is showing a daily usage of 30kWh, even on days when I’m not home. 
My flat uses gas only for heating and hot water so I’m at a complete loss as to how I can be using such insane quantities of gas on days when I’m not even in the property. How have I gone through 23.5kWh of gas when I’ve spent the past two days at my partners house?!
Has anyone else noticed their readings have skyrocketed recently? 
I tried reaching out to customer service about in and after spending almost an hour trying to get in touch with an actual human I was left waiting for another 20 minutes while they “looked into it” then randomly the conversation was terminated and I was booted from the chat.

Nukecad
Super User
Super User
November 5, 2025

Where are you seeing these numbers?

Could you post a screenshot, (without any account numbers or personal details).

Some of the charts that you see on your account online will show Esitimates at times and depending on circumstances they can be wildly out.

They get corrected later.

You would not be the first to have a WTF? moment until you realise it's just a transitory estimate and not real.

OR

To put it another way I have suffered from an over inflated Gas Anual Quantity giving me excessive ‘estimated’ usage for a few years now. it is now sorting itself out for me now, but it can take 12 months.

I said, Hey - Watts going on.
Ben_OVO
Community Manager
Community Manager
November 6, 2025

@Jambles good morning and a warm welcome to the Forum community.

 

As ​@Nukecad says, this could be due to estimates. Have you got a smart meter or a traditional meter? 

 

We’ll await your answers, and screenshots as requested by Nukecad.

Powered by the Sun
Rank 6
November 7, 2025

Mine has increased but that’s due to a)testing boiler ok for approaching winter.

  1. Boiler been on boost a few times during Oct for colder morning/evening. 
    It had only increased for the usage. 
    your bill could be estimated. 
    Contact Customer Support if you don’t get to bottom of this large increase on Forum. 
    I’ve always found Customer Support excellent when I’ve made contact. 
    Please keep us UPDATED on progress
Wibbly Wobbly Hypermobile - EDS’er
Ben_OVO
Community Manager
Community Manager
November 10, 2025

Thanks for the positive feedback ​@chrisablake!

Powered by the Sun
Newcomer
November 19, 2025

I'd always found the estimated readings to be pretty close to my actual usage, so when I saw it had increased tenfold out of nowhere that definitely set up alarm bells.

After many conversations with many customer service people, some very helpful and some obstinate to the point of pedantry, the meter was reset remotely and the readings on the account now match the actual usage again. I've also noticed since the meter was reset that there are now daily readings instead of monthly/every two months.