Best location for ASHP

[Foregoneconclusion]

Having insulation etc upgrade in house soon which includes installation of an ashp.

What is the best place for one of these?

We have a few out houses..I was thinking that we could improve the efficiency of the ashp by getting it to draw air from one of our old stone sheds..well ventilated of course. That way even on a cold clear day they'd benefit from some of the solar or passive air heating inherent in the old buildings..

If this a thing? Or am I being a bit simple..
Tia

 

[Andy26]

Having insulation etc upgrade in house soon which includes installation of an ashp.

What is the best place for one of these?

We have a few out houses..I was thinking that we could improve the efficiency of the ashp by getting it to draw air from one of our old stone sheds..well ventilated of course. That way even on a cold clear day they'd benefit from some of the solar or passive air heating inherent in the old buildings..

If this a thing? Or am I being a bit simple..
Tia

I'd make sure you have big radiators and 28mm main pipework, with 22m to each radiator.

Rule of thumb radiators should be 2.5 times bigger than for a gas/oil powered central heating system.

 

[spin cycle]

a skip

 

[Nearly]

a skip

Greta's house.

 

[HatsOff]

Good airflow is more important than shelter.

They move quite a lot of air some once it's extracted the warmer air from the shed it'll just be the same as drawing from the outside. Trying to route air through a shed wouldn't hurt unless it impacts on airflow - then may become counterproductive.

I'd make sure you have big radiators and 28mm main pipework, with 22m to each radiator.

Rule of thumb radiators should be 2.5 times bigger than for a gas/oil powered central heating system.

Stupidly, central heating systems should have been designed for 'low flow' temperatures since the early 2000s when condensing boilers were mandated (if you run a condensing boiler over ~60C they're no better than the old designs). Lazy installations meant that very few were.

 

[Foregoneconclusion]

a skip

I knew some wag was going to say that...

 

[Andy26]

I knew some wag was going to say that...

But seriously, upgrade your pipework before insulation, friend of mine does ASHP and says big pipework and large radiators give a better cop than insulation.

Putting an ASHP onto a system designed for oil or gas will not work and will cost a fortune to run.

 

[goodevans]

Having insulation etc upgrade in house soon which includes installation of an ashp.

What is the best place for one of these?

We have a few out houses..I was thinking that we could improve the efficiency of the ashp by getting it to draw air from one of our old stone sheds..well ventilated of course. That way even on a cold clear day they'd benefit from some of the solar or passive air heating inherent in the old buildings..

If this a thing? Or am I being a bit simple..
Tia

Cattle shed,it would be warm all winter and also aid ventilation

 

[Foregoneconclusion]

But seriously, upgrade your pipework before insulation, friend of mine does ASHP and says big pipework and large radiators give a better cop than insulation.

Putting an ASHP onto a system designed for oil or gas will not work and will cost a fortune to run.

The whole system is being done as present system was installed in the 1950s.

Thankyou for the tips though..engineer coming tomorrow to spec out the job.

 

[Yale]

Folks have had theirs done, other night the rads on the end of the run seemed quite a bit cooler than the first one or two. Stupid smart thermostats have been unscrewed up the thread as they prevent the room heating unless movement is detected. That’s a stupid idea!

 

[Foregoneconclusion]

Our property is quite large and long..I'm wondering if we will have rads at end cooler than ones closer by simply because of the distance...

The initial indication is at least 20kw system..but 2 units..I wonder if it's better to have 2 heating zones run by separate machines..it would mean I could run 1 when kids have left...

Is this a thing? Or just inefficient.

I'll suggest it to the bod tomorrow

 

[e3120]

Cattle shed,it would be warm all winter and also aid ventilation

I like the grain store. Spend most of the winter using electric to dump summer heat out of it. Controlled dehumidification also a boon.

 

[warksfarmer]

Having insulation etc upgrade in house soon which includes installation of an ashp.

What is the best place for one of these?

We have a few out houses..I was thinking that we could improve the efficiency of the ashp by getting it to draw air from one of our old stone sheds..well ventilated of course. That way even on a cold clear day they'd benefit from some of the solar or passive air heating inherent in the old buildings..

If this a thing? Or am I being a bit simple..
Tia

Got an air source heat pump for sale if it’s of interest. Think it was about £6k brand new. Looking for £1k for it. Not sure of the make model but can find out if it’s of interest.

 

[HatsOff]

Our property is quite large and long..I'm wondering if we will have rads at end cooler than ones closer by simply because of the distance...

The initial indication is at least 20kw system..but 2 units..I wonder if it's better to have 2 heating zones run by separate machines..it would mean I could run 1 when kids have left...

Is this a thing? Or just inefficient.

I'll suggest it to the bod tomorrow

1What you could consider if having a smaller air to water heat pump for downstairs (to run hot water tank and - ideally - underfloor heating) and upstairs have a multisplit air to air heat pump to provide warm air and air conditioning in summer.

 

[crashbox]

Cattle shed,it would be warm all winter and also aid ventilation

Next they'll be running pipework through the dung to warm it up!

 

[Yale]

I’d say drawing air from any building will cause issues with the warming fins building up with dust. The unit would have to be carefully cleaned regularly.

 

[goodevans]

Got an air source heat pump for sale if it’s of interest. Think it was about £6k brand new. Looking for £1k for it. Not sure of the make model but can find out if it’s of interest.

Does that mean you have changed back to oil or gas,I have a good friend who has done that with GSHP as electricity bill was so large

 

[HatsOff]

Does that mean you have changed back to oil or gas,I have a good friend who has done that with GSHP as electricity bill was so large

Hope they're not paying 80p a litre like the buying group here is offering!

 

[Exfarmer]

Siting, firstly they can make a noise , which you will probably not hear during the day but if it is cutting in and out at night you will.
second good air flow is critical
thirdly make sure the air will not recirculate , so never in a corner
wall mounting is good if the air can come through from one side and discharge the other.
remember discharge air will be cold and dry utilising the heat from a cattle shed is a very good source of cheap heat.
the air coming off will be very good for drying clothes , sadly cannot persaude my wife a clothes line is acceptable where my pump is located

Hope they're not paying 80p a litre like the buying group here is offering!

buying LPG at 80p is considerably cheaper than running a heat pump in winter, turned mine off.Yesterday

 

[sjt01]

Next they'll be running pipework through the dung to warm it up!

A local dairy farmer and cheesemaker did just that and won an award from Diversey for it.