Air source heat pumps in the news again

[Jones82]

I'm getting so sick of the media and tories plugging ashp's like they are the solution to all our heating needs.

Latest news today, £5k grant towards the cost of replacing a gas boiler with an ashp. What a joke.

Every ashp system I've worked on and installed runs the heating at 40 degrees, great for a new build with fantastic insulation and underfloor heating but just simply wouldn't work in most of the houses in England.

Why is this never mentioned in the media?

Air source should be the last thing we do not the first, the first should be insulation and upsizing pipework.

Just think of all them new builds, built in the last 30 years with microbore pipework, some barely run on gas boilers nevermind air source.

It makes me wonder what other things the tories pretend to know what they are talking about

I think one of Boris' mates manufactures ashp's....

 

[Jones82]

I've started insulating where every I can and advising customers to do the same, especially when floors are up or work been carried out. I've also started oversizing radiators and pipework, another advantage to this is the gas boiler flow temperature can be turned down, increasing efficiency. I don't want to get political or start pointing fingers but the ashp news story that I heard was woefully light on the real details and if we are to belive the rest of the media, time is running out when it comes to climate change.

I do feel its bad journalism and bad government to gloss over all these key details with a "£5k grant for ASHP"

I think the truth is a £5k grant makes money for someone somewhere, where as insulating britain and seriously addressing our move to renewables is going to cost massive amounts of money not make it.

I'm also concerned that many an old vunerable customer is going to be misold an air source heat pump, only to find they've spent way too much money on a poor installation.

 

[cjg]

old vunerable customer will be ripped off by so called hp installers, every tom dick and harry will be starting to sell and installand rip the govment off, then close down. when the sh~t hits the fan,
and now we are all on leccy there will be power cuts no cooking, heating, cars charge, lighting.
and best of all the price will double or more how f in daft are we gettting

 

[John.g]

But eventually of course, NUCLEAR power will be the new saviour.

 

[ShaunCorbs]

Insulation is key let’s say you have a 500w load on a heat pump you need a 2.0m x 0.6 k2 rad

Gas boiler 6x6 k2

 

[brum]

I'm getting so sick of the media and tories plugging ashp's like they are the solution to all our heating needs.

Latest news today, £5k grant towards the cost of replacing a gas boiler with an ashp. What a joke.

Every ashp system I've worked on and installed runs the heating at 40 degrees, great for a new build with fantastic insulation and underfloor heating but just simply wouldn't work in most of the houses in England.

Why is this never mentioned in the media?

Air source should be the last thing we do not the first, the first should be insulation and upsizing pipework.

Just think of all them new builds, built in the last 30 years with microbore pipework, some barely run on gas boilers nevermind air source.

It makes me wonder what other things the tories pretend to know what they are talking about

I think one of Boris' mates manufactures ashp's....

you cant blame the tories ffs

 

[Jones82]

you cant blame the tories ffs

I don't want to get into a political argument but the tories have been in power for 11 years next year.

Their current energy policy is woefully lacking leadership and ambition.

In my opnion they are the party of self interest and corruption and I've seen little to dissuede me otherwise. That is not to say labour are any better.

Here's a good example, did you know that privatised water companies have paid £54 billion to their shareholders since 1991? Imagine if that was money was reinvested in our infrastructure instead of making rich people richer.

How much do you think the energy companies are making?

Honest prediction? We are going to see a climate incident on a scale not seen in human history which will force the entire global population to take this more seriously.

Thats my opinion and I hope I'm wrong

 

[SimonG]

I dont want to get into a political argument but.

Should have left it with the first statement.

It's a plumbing forum not a government bashing forum.

 

[Jones82]

Ok I apologise but it was a direct question how is it the tories fault.

 

[Sparkgap]

Caveat Emptor!!! A few years ago I had a commercial installation at a community centre. UFH, ASHP, total heat losses for the building about 70kW. ASHP manufacturer quoted for a unit, sparkies checked loading for new substation transformer which was being replaced with another which was already on site and which would give sufficient spare capacity for future improvements. I step up and throw big spanner in the works: what was the ASHP output for the client's design conditions (-4C outside temp)? Manufacturer comes back with quote for 100kW unit and spare substation capacity virtually disappears! Always check outputs at the design conditions, not what the manufacturers test them at!

Currently have a project going on: existing 12 year old designer house, UFH, acres of glass. Major extension being built (about 90% floor area increase!) also with UFH and a/c being fitted to new and existing rooms as amount of glass is causing issues with overheating. VRV system going in so that in summer a/c can dump heat directly into HWS system and in effect give free hot water. Client is not short of a bob or three but still complaining about running costs (currently £15-20k/yr for three people!!!).

Talking of running costs, latest figures from Nottingham Energy Partnership give ASHP (assumed 270% efficiency, electric at 22.2p/kWh) at 8.22p/kWh and mains gas (assumed 90% efficiency) at 4.88p/kWh. Why do I want to change my gas boiler for something which is going to cost me twice as much (even assuming I had a suitable heating system for it)?

 

[BobbyJoe]

Hi everyone,

I bought my small flat (built late 60s) about 2 years ago and got a new gas combi boiler as well as other upgrades as the flat needed fixing up.
My question is, is it mandatory by the government to get air source heat pump installed? I couldn't afford it even with the grant help but am feeling a little worried about it as I am happy with hot water and heating in my flat and don't want to or be forced to change it.

Also for those who live in council let properties do they have any rights to refuse ASHP or does the council over rule this change?

Any advice would be really appreciated thank you.

 

[cjg]

firstly, no, gas boilers will be around for a long time yet, if they try to push it then its a complete new heat system as all the pipe work will have to be upgraded bigger rads, ect, ashp,s will not work unless you have first class insluation ect,
and theres talk of hydroden boilers comeing, so no pannic,..

 

[Phill K]

Like CJ has said, it isn’t mandatory. Just another case for why you should never believe what they say on the “lies box” in the corner of the front room.
Propaganda and scare tactics being monopolised by some very unscrupulous companies.
Like smart meters, no mandate that you must have them.

Company I work for is already sending out it’s boilers ready for the hydrogen change over, Cadent have been busy digging every street in the country upon preparation for it.

One word of advice though, if you are getting a new boiler, get it done before June, energy laws change and it’s going to be a headache for installers to say the least

 

[king of pipes]

Hi everyone,

I bought my small flat (built late 60s) about 2 years ago and got a new gas combi boiler as well as other upgrades as the flat needed fixing up.
My question is, is it mandatory by the government to get air source heat pump installed? I couldn't afford it even with the grant help but am feeling a little worried about it as I am happy with hot water and heating in my flat and don't want to or be forced to change it.

Also for those who live in council let properties do they have any rights to refuse ASHP or does the council over rule this change?

Any advice would be really appreciated thank you.

You won't be forced to change anything so please don't worry gas boilers will be with us for the for seeable future and are still being installed, there could be a few changes coming but it's nothing to consern yourself with and will be brought in slowly. Regards kop

 

[gmartine]

Electricity is going to be over 30p per kw/h after Autumn's planned cap increase, hold tight.

 

[Ric2013]

One word of advice though, if you are getting a new boiler, get it done before June, energy laws change and it’s going to be a headache for installers to say the least

That's worth knowing. Still catching up on back copies of "Installer" so not heard of this. Had a quick look online. The Baxi website explains it simply, but what it is suggesting the law requires seems to me to be no more than what I would deem common sense. What problems do you expect are going to crop up that the idiots in Whitehall haven't forseen?

 

[Murdoch]

Imho only really modern builds can justify ASHP technology

 

[gmartine]

According to Heat Geek if you can run your flow temp at 55 deg C when it's cold outside (-2?) and your comfortable then a dwelling should be compatible with an ASHP without any further alterations like increased pipe size or emitters.

Seems like a reasonable rule of thumb for Southerners as we barely get a frost down here.

 

[John.g]

A 15kw unit will achieve this, if 9.5kw is sufficient to keep your house warm but at a increased cost of course as the COP will be ~ 2.1.

 

[Last Plumber]

According to Heat Geek if you can run your flow temp at 55 deg C when it's cold outside (-2?) and your comfortable then a dwelling should be compatible with an ASHP without any further alterations like increased pipe size or emitters.

Seems like a reasonable rule of thumb for Southerners as we barely get a frost down here.

If you can do it with a DT (flow & Ret diff) of 5 degree C then I suppose it could be a rule of thumb.

 

[John.g]

If 55C/50C (flow/return) is OK and if one wanted to get the maximum COP from the heat pump it would need rads upsized by a factor of almost 3.5 (3.46) to allow 35C/30C (flow/return).