Combi Boiler using tons of gas.

Ellioru

Ectophile wrote: »

Since nobody else has mentioned it yet...

Have a close look at your gas meter and see if it reads in cubic metres or cubic feet. Then have a look at your gas bill and see if that is the same.

There have been cases when people have cubic feet gas meters, but the gas company have assumed it's cubic metres, and charged a lot more.

I've already checked this so all seems to be correct regarding that.

I'm honestly thinking it's the water system eating up gas - had a shower for about 15 minutes earlier and it's used nearly a full unit of gas. When we're expected to use 3-5 units a day, that's a lot...

daveyjp

What make of boiler? What were the figures before and after the shower?

Ellioru

daveyjp wrote: »

What make of boiler? What were the figures before and after the shower?

It's a Baxi Combi 105 HE
Before I got in the shower it was at 6087.38 then it went up to 6088.09

loracan1

Ellioru wrote: »

The readings are correct. The bill for a 4 week period, which was from the 19th November until the 19th December it says we used 246 units, which equated to 2732 kWh which is 3.558p per kWh. We're on a fixed price plan too.

That's about £97 - similar to ours just for gas over a couple of months last winter. It averages out though over the year as mentioned earlier in the thread. There are a couple of weeks in January where it was 70-odd units a week, and a week in August (when the kids were away) that was 4. Start keeping a weekly log of how much you're using

southcoastrgi

the max gas rate for your boiler is 3.22 m3/h which for your 15 min shower is 0.805 m3/h you used 0.71 m3/h so you used less than the boilers max output so at least on hot water it seems to be working correctly

jennifernil

15 minutes is a long shower!

Mr_Ted

jennifernil wrote: »

15 minutes is a long shower!

depends what your doing

:rotfl::rotfl:

JohnB47

Ellioru wrote: »

I've already checked this so all seems to be correct regarding that.

I'm honestly thinking it's the water system eating up gas - had a shower for about 15 minutes earlier and it's used nearly a full unit of gas. When we're expected to use 3-5 units a day, that's a lot...

I really should get out more but I thought I'd look at my own consumption, using a Worscester Bosh 28Si Combi.

After two showers, lasting around 12 mins total, our meter showed 0.13 cu feet used. Using the calculation on my latest bill, that equates to 4.097 Kwh. My current gas tariff charges 4.4 p per Kwh , so that's a cost of 18 pence, excluding the daily standing charge of 14.8p (all calcs are inclusive of vat).

If your meter indicates a use of almost one unit, compared to 0.13 on mine (assuming they both read in cubic feet) then your boiler is using almost 8 times the gas mine is using for a period not too dissimilar. Doesn't seem right somehow.

espresso

JohnB47 wrote: »

I really should get out more but I thought I'd look at my own consumption, using a Worscester Bosh 28Si Combi.

After two showers, lasting around 12 mins total, our meter showed 0.13 cu feet used. Using the calculation on my latest bill, that equates to 4.097 Kwh. My current gas tariff charges 4.4 p per Kwh , so that's a cost of 18 pence, excluding the daily standing charge of 14.8p (all calcs are inclusive of vat).

If your meter indicates a use of almost one unit, compared to 0.13 on mine (assuming they both read in cubic feet) then your boiler is using almost 8 times the gas mine is using for a period not too dissimilar. Doesn't seem right somehow.

Why add to the confusion! The OP obviously has a metric meter.

Ellioru wrote: »

When we change the thermostat, it does click yes so I believe it to be working. The placing of it is a bit silly if you ask me, it's next to the front door, and in the landing there is no radiators so it's generally pretty cold.

The readings are correct. The bill for a 4 week period, which was from the 19th November until the 19th December it says we used 246 units, which equated to 2732 kWh which is 3.558p per kWh. We're on a fixed price plan too.

The way my mind works is that if I'm not using it and turning my boiler off a lot (which I have done previously, but since the bill I've tried changing my usage habits to see if it helps) should be saving me money, not be giving me large bills.

Jim_AFCB

I had the issue with the thermostat being in a (cold) hall.

I replaced the thermostat with a remote control one which controls the temperature of wherever you place it (in the living room, in my case).

It is also programmable so you can set different temperatures for different times of the day.
During very cold weather I will leave the heating on H24, but keeping the temperature to 15c during the day when I am at work, or overnight, but higher when I am normally home.

It has reduced my heating bill by around 10% (should be even lower this year given the mild winter so far).