Does high gas pressure mean higher bills?

[Last Plumber]

To WINDMILL.
You say it's a matchless HE balanced flue.
Just for clarity, is that correct?

 

[windmill]

Yes. It's a Matchless balanced flue with a glass front.
I didn't look at the trim before it was fitted so don't know if the rust was there beforehand.

 

[firemant]

I assumed the "black lift-up flap" was the flue spigot. I now assume it us the shield that fit a in front of and above the glass. The only thing that can flex there is the front of the heat exchanger. There is a thin gasket so if the panel flexes back I suppose it could create a gap This being the case then the slight increase in input pressure would not make a difference

 

[windmill]

Have taken 2 more pics. The first one shows the black flap across the middle of the photo (it can also be removed). The 2nd pic shows the black flap lifted up allowing you to see on to the top of the fire box. It is that bit you can see including the white foam-like strip that the engineer said was flexing up when the fire was on. I don't know what it's called.

 

[Sedgy40]

We had a new gasfire installed last summer which never worked correctly. Eventually the manufacturers sent their own gas safe engineer to look at it. He discovered the gas pressure in our house was too high (27.5 mb) and called National Grid who came within an hour. They have now reduced it to 24 mb but when I asked why it was too high the engineer was rather evasive and only said that it was now fixed. We had a new gas meter installed in 2001 and wonder if the pressure has been too high since then. Will our gas bills have been higher because of the high pressure?
There is also a yellow stain on the new white micro marble fireplace that we had installed at the same time as the fire. It is in on the back panel just above the gasfire and extends upwards about 6 inches. The gasfire manufacturers engineer said he thinks it has been caused by the fire getting too hot because of the high pressure. Does anyone have any tips about how to clean it off otherwise we will have to try to get National Grid to pay for a replacement.
Thanks for any advice.

The installer that fitted your fire initially, would have done a pressure test surely?

 

[firemant]

Personally, I would be complaining to the retailer, for a new panel, as it is he with whom you have the contract. He may then pursue the C&J, but that is up to him.

 

[oilmark]

Apart from the safety issues the OP would have benefited from buying gas at a higher gas pressure as the meter measures cubic metres of gas therefore more energy was contained in each unit measured.?