Dimplex Vs German Ceramic Core Radiators

DaveGain

macman said:

You still don't get it. Please explain to us how changing to any other sort of heaters will reduce this consumption? Which is not excessive anyway. If you need 10,000kWh pa to heat the property, then that is fixed, unless you improve the insulation or live with lower temperatures.
The only way to reduce your bills is to pay less for your electricity, and E7 is the only option. If your NSH's don't last through the day, then you either need to adjust the output to a lower setting, or get bigger heaters. 

so when Dimplex say they can save me 27% on my consumption it isn't true?

Gerry1

DaveGain said:

macman said:

You still don't get it. Please explain to us how changing to any other sort of heaters will reduce this consumption? Which is not excessive anyway. If you need 10,000kWh pa to heat the property, then that is fixed, unless you improve the insulation or live with lower temperatures.
The only way to reduce your bills is to pay less for your electricity, and E7 is the only option. If your NSH's don't last through the day, then you either need to adjust the output to a lower setting, or get bigger heaters. 

so when Dimplex say they can save me 27% on my consumption it isn't true?

It could well be true if it doesn't leak heat all the time from midnight through to breakfast.  A hot water bottle filled at midnight won't still be warm in the afternoon, but a vacuum flask could well be.

DaveGain

Gerry1 said:

It could well be true if it doesn't leak heat all the time from midnight through to breakfast.  A hot water bottle filled at midnight won't still be warm in the afternoon, but a vacuum flask could well be.

Great thanks

knightstyle

It always amazes me that people will spend thousands of £s on upgrading storage radiators before installing extra insulation!  Think about it...if the house lost no heat you would not need to have any heating.
So how about investing in better insulation and looking at the best tariff for your life style.

macman

DaveGain said:

macman said:

You still don't get it. Please explain to us how changing to any other sort of heaters will reduce this consumption? Which is not excessive anyway. If you need 10,000kWh pa to heat the property, then that is fixed, unless you improve the insulation or live with lower temperatures.
The only way to reduce your bills is to pay less for your electricity, and E7 is the only option. If your NSH's don't last through the day, then you either need to adjust the output to a lower setting, or get bigger heaters. 

so when Dimplex say they can save me 27% on my consumption it isn't true?

I suggest you look at the small print that states how that calculation is made. 1Kwh is a unit of energy, an electric heater converts that to 1kWh of heat, or near enough. No Dimplex technology converts it to 1.27kWh of heat.

macman

danrv said:

macman said:

Not so. The E7 times are determined by the DNO for your region, they can't be chosen by the customer. Whoever told you that was clueless. 

Ok, thanks.. Did read something about that.
Message says that their dedicated team can help exchange the meter to Ecomony 7 
with my preferred time.
Doesn’t matter. Regular Economy 7 hours and new storage heaters will get my electric heating back to a normal setup.
It’s just that my current E10 off peak period (5.40am - 3.40pm) is kinda useful for washing machine, dishwasher and shower etc.
I always turn on the immersion heater during off peak too. I can fit a timer for this when I change to E7 but probably won’t for the others.

Don’t want to go too far off topic but regarding storage heater system configurations, there’s pros and cons for NSHs all round vs NSH with elec. rads (for bedrooms).
With NSH/rads is it usual to have whole house switchover which would mean that the radiators would use the peak rate electric?
Would have thought that the E7 circuit should just be for storage heaters and the hot water. 24/7 for heater fans and everything else.

It's only doing that because the old clockwork timer in the meter has drifted hours out of synch, and in your favour. A new E7 meter will give you midnight to 7am, or maybe 1am to 8am: it varies by DNO.

Gerry1

macman said:

DaveGain said:

macman said:

You still don't get it. Please explain to us how changing to any other sort of heaters will reduce this consumption? Which is not excessive anyway. If you need 10,000kWh pa to heat the property, then that is fixed, unless you improve the insulation or live with lower temperatures.
The only way to reduce your bills is to pay less for your electricity, and E7 is the only option. If your NSH's don't last through the day, then you either need to adjust the output to a lower setting, or get bigger heaters. 

so when Dimplex say they can save me 27% on my consumption it isn't true?

I suggest you look at the small print that states how that calculation is made. 1Kwh is a unit of energy, an electric heater converts that to 1kWh of heat, or near enough. No Dimplex technology converts it to 1.27kWh of heat.

Actually a 27% saving would correspond to 1.37kWh of heat.

However, I think Dimplex are saying that a Quantum could save 27% compared to what an old style simple box of bricks would use to maintain the same room temperature during the time the room is occupied.

An old NSH will leak heat throughout the night (and throughout the day if the occupants are away) whereas the Quantum will only blow heat out when it's programmed to do so.

Therefore it's quite possible that it will use 27% less electricity, it's not a 'magic dust' claim.  It's the same principle as a car that automatically turns its engine off in traffic queues or at traffic lights: the MPG at a steady 56mph may not change, but the overall fuel economy will increase.

Cardew

DaveGain said:

so when Dimplex say they can save me 27% on my consumption it isn't true?

You need to read what Dimplex actually claim:  https://www.dimplex.co.uk/product/quantum-heater

'offering you savings of up to 27% compared to a standard storage heater system* and up to 47% compared to an electric convector or radiator system*.'

Note the two little words 'up to'. So if they save 1% that is covered by the expression 'up to' and their claim is accurate.

If you care to read the 'Independent report' you will note it is for Economy 7 and not Economy 10

danrv

macman said:

It's only doing that because the old clockwork timer in the meter has drifted hours out of synch, and in your favour. A new E7 meter will give you midnight to 7am, or maybe 1am to 8am: it varies by DNO.

Thanks.
Yes, that’s what’s happened.
The property is ex rental and the timer has been left to drift for years. Last reset in 2008.
Would be good to change from this expensive E10
tariff to more widely available E7.
The loss of the favourable off peak hours will hopefully
balance out with the cheaper unit prices.

The storage heater is too large to work on E7 so will have to just keep using it as is. Electricity bill was about £180 a month last winter. 
Mostly off peak use with 2/3rds on heating, 1/3rd hot water.