Modern night storage heaters - how do they compare with a combi gas boiler?

cashferret

Martyn1981 wrote: »

Back to numbers, so assuming the old unit is say 60-70% efficient, and a new unit is closer to 90%, then you'll be looking at around 13,000 kWh's gas, or 11,400kWh leccy.

Do you like your flat?

Hi Martin - yes, I do like my flat!

cashferret

Owain_Moneysaver wrote: »

I think I saw gas consumption halve when I swapped my Baxi Bermuda for an A-rated combi, and not having a draught whistling across the lounge made the whole house more comfortable. Also upgrading to a programmable thermostat was part of that - the house need never get freezing cold, but the heating doesn't need to be on daytime temps in the middle of the night.

Hi Owain - yes, I'm also looking forward to getting rid of the draughty vent!

cashferret

Owain_Moneysaver wrote: »

If you do want to consider heat pump / air conditioning, there are all-in-one air-con systems that don't have a separate outside unit. They work through two duct holes in the wall and can be installed with no outside access if necessary. Eg

https://www.airconco.com/buy/all-in-one-air-conditioner/
https://www.appliancesdirect.co.uk/p/air8sf/electriq-air8sf-air-conditioner

Thanks, Owain. That's interesting that you don't have to have an external unit.

I live in a listed building so couldn't have even a vent on the front facade. The only room at the back of the building is my bedroom, which wouldn't need air con - that unit would have to heat the whole flat. I think I'd still have the problem that my flat can't be insulated enough to make a heat pump viable.

Owain_Moneysaver

Martyn1981 wrote: »

But, secondly, if the unit is wholly inside, then presumably the huge volume of air also has to be processed inside, making it noisy. I note that the db figures given are similar to the outside unit I've got, which is akin to 'background daytime suburban noise'.

I thought that when I was posting - but not sure how much noisier they are than a separate indoor unit.

In terms of cost, because they're all-in-one there's no refrigerant engineer needed to evactuate the pipes and gas the system, which is a saving and in many cases means DIY installation is possible.