Air source heat pumps - no thanks

[Taunton Blue Genie]

Re: Air source heat pumps - no thanks

Another potentially useful thread spoilt.

I'm just grateful that 'God' hasn't been mentioned yet.....

[bobh]

Re: Air source heat pumps - no thanks

I'm just grateful that 'God' hasn't been mentioned yet.....

Now you've gone and done it!

[goats]

Re: Air source heat pumps - no thanks

I'm just grateful that 'God' hasn't been mentioned yet.....

We should start talking about Jesus and all that mumbo jumbo stuff, truthpaste will never find it hidden on a thread about air source heat pumps, imagine the fun we could have….i mean what the hell is John 3:16 anyway? I always remember seeing it in banners at world cups in the 80’s/90’s….

[az city]

Re: Air source heat pumps - no thanks

We should start talking about Jesus and all that mumbo jumbo stuff, truthpaste will never find it hidden on a thread about air source heat pumps, imagine the fun we could have….i mean what the hell is John 3:16 anyway? I always remember seeing it in banners at world cups in the 80’s/90’s….

It's "'80s and '90s".

[az city]

Re: Air source heat pumps - no thanks

OK, don't shoot me but I have one.

To be fair, the house it's in is designed for it (18-inch-thick insulated walls, a heat recovery system, a small PV system, triple glazing and underfloor heating everywhere).

What I found at first was I couldn't get to grips with it and that it was totally frustrating. It took me a while to realize it won't work if you want instantaneous "on-demand" control. You have to leave it on almost all the time and draw from the slowly collected heat as you use the hot water and heating during your use of your house over a 24-hour cycle. Essentially, it's a system for people who are willing to plan.

It's actually very quiet. The house is cozily warm all the year and it's very cheap to run - my total electricity bill is less than 450GBP a year (I don't have gas).

[Gofer Blue]

Re: Air source heat pumps - no thanks

OK, don't shoot me but I have one.

To be fair, the house it's in is designed for it (18-inch-thick insulated walls, a heat recovery system, a small PV system, triple glazing and underfloor heating everywhere).

What I found at first was I couldn't get to grips with it and that it was totally frustrating. It took me a while to realize it won't work if you want instantaneous "on-demand" control. You have to leave it on almost all the time and draw from the slowly collected heat as you use the hot water and heating during your use of your house over a 24-hour cycle. Essentially, it's a system for people who are willing to plan.

It's actually very quiet. The house is cozily warm all the year and it's very cheap to run - my total electricity bill is less than 450GBP a year (I don't have gas).

Wow, you have a fantastic set up there. MVHR + massive wall insulation + PV + TG + UFH...... ideal! Out of interest do you how many kWh you use p.a. per sq metre of house? There are very few houses in the U.K. that come anywhere near that kind of construction, hence ASHP not really viable for the majority.

Is it passive house (PH) standard? Not sure if they have PH over there though?

[az city]

Re: Air source heat pumps - no thanks

Wow, you have a fantastic set up there. MVHR + massive wall insulation + PV + TG + UFH...... ideal! Out of interest do you how many kWh you use p.a. per sq metre of house? There are very few houses in the U.K. that come anywhere near that kind of construction, hence ASHP not really viable for the majority.

Is it passive house (PH) standard? Not sure if they have PH over there though?

For 2023, it used 1,316 kWh and has a footprint of 105m2. I think that qualifies.

I don't think the passive house standard is actually well specified though. I think a better standard would use space/building volume. (My house has cathedral ceilings.)

[Gofer Blue]

Re: Air source heat pumps - no thanks

For 2023, it used 1,316 kWh and has a footprint of 105m2. I think that qualifies.

I don't think the passive house standard is actually well specified though. I think a better standard would use space/building volume. (My house has cathedral ceilings.)

From your figures I make it 12.5 kWh/sq.m., so yes, less than 15.0 = passivhaus! The electricity price is quite expensive there then: £450 for 1316 kWh is approx 35p per kWh but still £450 p.a. is still hugely different to the bill for an average house in the UK.

I hadn't thought much about volume as opposed to floor area (I'm just an enthusiastic amateur, not an engineer!). Does having high ceilings make a significant difference to heating costs?

[Elwood Blues]

Re: Air source heat pumps - no thanks

We should start talking about Jesus and all that mumbo jumbo stuff, truthpaste will never find it hidden on a thread about air source heat pumps, imagine the fun we could have….i mean what the hell is John 3:16 anyway? I always remember seeing it in banners at world cups in the 80’s/90’s….

'For God so loved the world that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life". '


But of course you knew it really!

[jon1959]

Re: Air source heat pumps - no thanks

'For God so loved the world that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life". '


But of course you knew it really!

And so the last safe space on the CCMB is lost!

[Dorcus]

Re: Air source heat pumps - no thanks

And so the last safe space on the CCMB is lost!

Is nothing sacred?

[Elwood Blues]

Re: Air source heat pumps - no thanks

And so the last safe space on the CCMB is lost!

It's ok....I won't tell Truthpaste if you won't

[SLUDGE FACTORY]

Re: Air source heat pumps - no thanks

It's ok....I won't tell Truthpaste if you won't

Christ where have you been ?

Not literally

[North Cardiff Blue]

Re: Air source heat pumps - no thanks

It's like electric cars, it's not for everyone, and trying to adapt old badly insulated houses is pointless, the same with trying to charge cars on terraced streets without a drive.

Also, the technology will improve making the energy costs lower and the distance for EVs longer.

I will avoid both as long as I can until they improve or they change to something better.

[Gofer Blue]

Re: Air source heat pumps - no thanks

It's like electric cars, it's not for everyone, and trying to adapt old badly insulated houses is pointless, the same with trying to charge cars on terraced streets without a drive.

Also, the technology will improve making the energy costs lower and the distance for EVs longer.

I will avoid both as long as I can until they improve or they change to something better.

It's still worth improving the insulation in older houses as much as you can, if only to reduce the heating bills (the payback time can be quite short) - but I agree it is highly unlikely that you could achieve PassivHaus accreditation in anything other than a new purpose-built ecohome.

The situation with EV's reminds me of the old VHS vs Betamax saga back in the 70's. Better to wait a few years to see which becomes the dominant technology!