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Any energy performace experts: Night Store Heaters and energy performance certificate

Former Community Member over 4 years ago

Any body else getting asked to put in Eco 7 and Dimplex Quantum heaters as a way of improving the EPC ratings of domestic rentals.

Constantly we're being asked to take out decent 24hr Lot 20 heaters with stats and timers and replace them with the Quantum and having to put in new economy 7 supplies and DBs

For a lot of tenants it just pushes up the electricity bills because they have to have the Quantum on the full 7 hrs over night and then can't negotiate a low day rate with their supplier (you end up paying more on your day rate if you have Eco 7). It doesn't take in to account life styles. Some people out at work all day and are happy to have their 24hr heaters on for a couple of hours in the evening when they get in as oppsoed to having to use the full 7 hrs overnight. And the cost of putting these in runs in to 1000s which landlords just pass on back to their tenants

Properties with gas CH get better EPCs than those with standard 24hr electric rads but this doesn't make sense either as green generation increases each year therefore why not just stick with decent electric rads that can be used 24hrs when the consumer wants and needs them.

Am I missing something?

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0 alanblaby over 4 years ago

Radiators which are only a little bit larger than a standard gas CH fitted radiator. I'm sure someone has done some calculations to show it is the correct size, but they dont heat the house like gas CH. They run at around 30 degrees C. And need to be on all the time.

I've seen bills for £60 a week for electric, when it is below 5deg. C.

Hot water is better, as it is mains pressure, and nearly always hot (55 degrees or so), as they default to heating the water rather than the radiators. The tank is pretty big, far larger than a typical 3 bed house vented cylinder, I'm not sure why they use a large tank, maybe to stop the water running cold, giving a larger reservoir of hot water.

We have some Ground Source too, which, if they havent leaked, are a lot better, but still have the low temperature radiators, but the electric used is a lot less. A few of them have failed, they water pipes going deep down have sprung a leak, probably due to poor installation. It is impractical to repair them, so they need to be abandoned, and a new vertical bore carried out for new piping.
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0 alanblaby over 4 years ago

Radiators which are only a little bit larger than a standard gas CH fitted radiator. I'm sure someone has done some calculations to show it is the correct size, but they dont heat the house like gas CH. They run at around 30 degrees C. And need to be on all the time.

I've seen bills for £60 a week for electric, when it is below 5deg. C.

Hot water is better, as it is mains pressure, and nearly always hot (55 degrees or so), as they default to heating the water rather than the radiators. The tank is pretty big, far larger than a typical 3 bed house vented cylinder, I'm not sure why they use a large tank, maybe to stop the water running cold, giving a larger reservoir of hot water.

We have some Ground Source too, which, if they havent leaked, are a lot better, but still have the low temperature radiators, but the electric used is a lot less. A few of them have failed, they water pipes going deep down have sprung a leak, probably due to poor installation. It is impractical to repair them, so they need to be abandoned, and a new vertical bore carried out for new piping.
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Any energy performace experts: Night Store Heaters and energy performance certificate

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