air to air heat pumps work

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Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

Posted: Sun Jul 09, 23 7:51 am Post subject:
If you fully insulate and draught proof a house you also need to ensure ventilation and air circulation. Must say in summer I prefer to have the windows open. We did have an air circulation system which also dehumidified which worked quite well but it is broken and we haven't repaired it as the reason for it has passed.

dpack

Joined: 02 Jul 2005
Posts: 44405
Location: yes

Posted: Thu Jul 20, 23 4:19 pm Post subject:
enemy action heat pumps need to show they are viable but spoilers at the trial is less than helpful

Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

Posted: Fri Jul 21, 23 7:29 am Post subject:

I don't think hydrogen is going to just take over the gas network as it is rather too good at finding tiny holes and going bang. It might be a partial solution, but then heat pumps are only a partial solution as well. Unfortunately the real solution is to look at each house individually and work out the best solution for it, and for that solution to be available and affordable. As the article says, the 'one size fits all' isn't going to work. I think if we fitted a heat pump (which is possible in our house) we would go for air distribution and a wood fire to add localised additional heat. I don't think a heat pump with our current radiators would do the job. In a terraced house, a heat pump might not be a solution, but a local distribution network might be, possibly wood chip. That would of course course problems with who pays how much of course. Insulation generally needs to be improved and air distribution throughout the house dealt with to prevent mould build up.

Nicky cigreen

Joined: 25 Jun 2007
Posts: 9967
Location: Devon, uk

Posted: Sat Jul 22, 23 9:39 am Post subject:
totally agree that you need a solution for each property. I have yet to find one for mine though (not that I would, but can't even knock it down and rebuild as conservation area/national park)

dpack

Joined: 02 Jul 2005
Posts: 44405
Location: yes

Posted: Sat Dec 23, 23 1:35 pm Post subject:
uptake by country one factor is the cost of leccy to run the HE unit, others include local political nudges to reduce gas dependency, the cost of gas and the level of counter propaganda

Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

Posted: Sun Dec 24, 23 8:26 am Post subject:

Interesting. I think there are several things that have influenced it; as they say, the ambivalent and fluctuating nature of government help, lack of independent advice, which is certainly a factor for us, cost and the suitability of UK housing stock. Terraces of poorly insulated houses in cities may not be the best place to install heat pumps, as the noise can be rather problematical apart from other considerations, and the insulation would have to be done first adding to cost.

I looked up grants for insulation and other things and it depends on not only whether you are financially eligible but you also need to have had a survey of the house recently, which costs money which those eligible for grants may not have.

dpack

Joined: 02 Jul 2005
Posts: 44405
Location: yes

Posted: Wed Dec 27, 23 4:53 pm Post subject:
news

Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

Posted: Thu Dec 28, 23 9:54 am Post subject:
Interesting. One thing I note in addition to the heat pumps in that article is the move away from 'fossil fuels', yet the Guardian is quite vociferously against burning wood, which is not a fossil fuel.

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28348
Location: escaped from Swindon

Posted: Fri Dec 29, 23 2:49 pm Post subject:
I'm curious as to how much heat pumps will improve over the next few years? It does seem to me that there is an awful lot of scope for improvement.

Slim

Joined: 05 Mar 2006
Posts: 6709
Location: New England (In the US of A)

Posted: Fri Dec 29, 23 9:24 pm Post subject:
Well the big next frontier is solid state heat pumps, but that will take a few years

Ty Gwyn

Joined: 22 Sep 2010
Posts: 4632
Location: Lampeter

Posted: Wed May 28, 25 10:41 pm Post subject:

18mths on and i`m none the wiser but even more suspicious,

Here in Wales we have this Eco4 scheme,if ones income is not more than Â£31,000,or if one has one of several health conditions or is on any kind of benefit,the cost of insulation,solar panels and air source pump and fitting are Free,sounds good,but the uptake has been slow because ones old system oil or coal has to be disconected,not so if one is paying personally for the system.

Now the last few months seems things have changed,that is where i`m getting suspicious,one of my neighbours was telling me they are having solar panels and a air source heat pump,but because they don`t want the hassle of moving things to get the insulation done the company are giving them extra solar panels,now a company from Swansea has contacted me trying to sell me a Hybrid system,where they fit solar panels and an air source heat pump,but its connected into the oil central heating system with some technical thermostatic whatnot that works on outside temperature,or one can manually switch it off.

It does seem to me these numerous companies are mainly Government grant chasers who then tender to the cheapest installer to fit the systems,as locally there have been many bad reports,about poor workmanship,mess left in homes and expensive electricity bills,one lady got an independant electrician it to check the work has not seen any reduction in the electric bills,he found several panels had not been connected to the system,and this lady had paid independantly for the system.

Makes the mind boggle.

Mistress Rose

Joined: 21 Jul 2011
Posts: 16508

Posted: Thu May 29, 25 7:00 am Post subject:

The best way of being sure is to get a personal recommendation from someone. If we go that way I will go with the people our next door neighbours went with as it seems to work well. I do know of one person who has had thiers done on the government scheme and they seem happy with it. Agree I wouldn't want our wood fire taken out of commission, but would be willing to get rid of the gas central heating. Think we might just go for solar panels as husband doesn't want to go full heat pump because of the hassle.

gz

Joined: 23 Jan 2009
Posts: 9247
Location: Ayrshire, Scotland

Posted: Thu May 29, 25 7:32 am Post subject:
I heard a report on radio Scotland a couple of days ago about a hybrid gas/ heating system.... basically neither half worked well...supposed to switch depending on the temperature...and bills ended up higher.

Slim

Joined: 05 Mar 2006
Posts: 6709
Location: New England (In the US of A)

Posted: Thu May 29, 25 12:45 pm Post subject:

Who would have guessed the UK would lack the capacity and competency to figure out heat pumps?

In my state (much greater heating demand) there have been incentives for installation, some requiring a change over of all systems, some not. Installations have been through the roof. Considering humanity's propensity for finding something to complain about, very little issues.

It's like climate change, the science has been there for many years now. If you can't make it work then that's a you problem at this point

Ty Gwyn

Joined: 22 Sep 2010
Posts: 4632
Location: Lampeter

Posted: Thu May 29, 25 4:33 pm Post subject:

Like i mentioned above there are Incentives/Grants in Wales for some people,
It had been a requirement when having a heat pump fitted that insulation had to be fitted at the same time,that seems to have changed in some cases,one neighbour had this system fitted 2yrs back apparently there was already insulation in the cavity brick work,recently another neighbour has had the system fitted without having to do any insulation and there is none there,now i`m offered this Hybrid system keeping the oil,using onne or the other.

I thought the whole idea of these heat pumps was to get everyone on to electricity via mains and solar,not offer Free Systems and still use fossil fuel,oil in my case .

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