Annual Electricity Kwh for heating a 3 bedroom semi detached ? 19 May 2020 at 11:35AM in LPG, heating oil, solid & other fuels 12 replies 154 views

CuiBono

I have a well insulated 3 bedroom semi-detached house with a 13 year old 24kwh gas combi boiler and 9 radiators.

In the winter I keep the temperature at 20.5 and throughout the year I use 14,000kwh of gas.

My energy supplier said if the house were heated only using electricity that an estimate of 8000khw of electricity each year compared to 14,000kwh of gas

Could I really keep the house that warm (20.5) only using 8000khw of electricity ?

Alter_ego

Electricity is much more expensive per Kwh.

Gerry1

Only if you used a heat pump.  But those 8000kWh of electricity would cost about the same as 32000 - 40000kWh of gas !

BTW, you'll get more replies if you post in Energy rather than LPG, Heating Oil, Solid & Other Fuels.

Biscuit_Tin

CuiBono said:

I have a well insulated 3 bedroom semi-detached house with a 13 year old 24kwh gas combi boiler and 9 radiators.

In the winter I keep the temperature at 20.5 and throughout the year I use 14,000kwh of gas.

My energy supplier said if the house were heated only using electricity that an estimate of 8000khw of electricity each year compared to 14,000kwh of gas

Could I really keep the house that warm (20.5) only using 8000khw of electricity ?

Your thread from less than 2 weeks ago where you claimed to use 11500kWh of gas per year:
https://forums.moneysavingexpert.com/discussion/6139880/gas-vs-electric-comparison

Robin9

Have you had  quotes for the replacement of your gas boiler ?  You may be pleasantly surprised.

CuiBono

Gerry1 said:

Only if you used a heat pump.  But those 8000kWh of electricity would cost about the same as 32000 - 40000kWh of gas !

BTW, you'll get more replies if you post in Energy rather than LPG, Heating Oil, Solid & Other Fuels.

My energy supplier said 8000kwh would cost £1200 each year which doesn't seem so bad.

Also I was asking whether 8000kwh each year would be enough to keep the house warm.

I meant to post in ENERGY but cannot find a way to move this post ... perhaps someone will tell me how !

Biscuit_Tin said:

Your thread from less than 2 weeks ago where you claimed to use 11500kWh of gas per year:
https://forums.moneysavingexpert.com/discussion/6139880/gas-vs-electric-comparison

Sorry but my energy company gave me the wrong figures !

Robin9 said:

Have you had  quotes for the replacement of your gas boiler ?  You may be pleasantly surprised.

No as I am self isolating (not out of choice) but I will get a quote as soon as I can.

Having had much trouble with my gas boiler breaking down and the same parts being replaced I have been investigating moving away from gas.

However in case I have to stick with gas I have been looking at an Ideal Vogue system boiler or Ideal Logic system boiler.

Gerry1

CuiBono said:

My energy supplier said 8000kwh would cost £1200 each year which doesn't seem so bad.

Also I was asking whether 8000kwh each year would be enough to keep the house warm.

8000kWh of daytime electricity would cost me £1017.68, so that would be a very expensive tariff !

If you need 14000kWh to stay warm with gas, how do you think that just 8000kWh of electricity will do the same job?  Are they supplying super-concentrated electrons, or do they expect you only to use an electric blanket?

Caveat emptor.

CuiBono

Gerry1 said:

CuiBono said:

My energy supplier said 8000kwh would cost £1200 each year which doesn't seem so bad.

Also I was asking whether 8000kwh each year would be enough to keep the house warm.

8000kWh of daytime electricity would cost me £1017.68, so that would be a very expensive tariff !

If you need 14000kWh to stay warm with gas, how do you think that just 8000kWh of electricity will do the same job?  Are they supplying super-concentrated electrons, or do they expect you only to use an electric blanket?

Caveat emptor.

You can see from my original post above that it was my energy company that said 8000kwh of electricity will do the same job as 14000kWh of gas - not me !

In fact their answer suprised me so I posted to ask what people thought.

Whilst I am aware that a 1kw bar fire delivers the full kw felt as heat/warmth, I don't know how many khw of gas would need to be burned in the central boiler to enough water that has to be pushed through pipes to a radiators for me to feel the same heat/warmth

in the same room.

Is there a formula for this ?

Gerry1

It depends on the efficiency of your boiler, but even with an inefficient boiler (say 70%) gas will always be cheaper because it's only about a quarter or a fifth of the cost of electricity.  Just look at the relative cost per kWh, under 2.5p for gas, probably 12 - 15p or more for single rate electricity.

Talldave

Regardless of whether the energy company's talking rubbish or not, the difference in price between 14,000kWh of gas and 8000kWh of electricity is almost the cost of a boiler - every year.
Where did hot water heating come in the energy company's grand plans?
My humble opinion is that anyone who willingly changes from gas to electric heating is insane. 

dogshome

Forget the lunatic advice from your supplier, concentrate on the price you are paying for their Gas and search the comparison sites for a better deal - Starting with the Citizens Advice site