Siting an ASHP when no wall space available?

[Steve1309]

We have a 3 bed end of terrace with no gas supply. The land next to the end wall is not ours. The front of the property opens straight onto a public path with about a metre gap. The back of the house has patio doors and a conservatory with no spare wall space. Short of knocking down the conservatory, does this rule out an ASHP?

 

We're keen to ditch our old eco 7 storage radiators.

 

TIA

[JohnMo]

What outdoor space do you have, garden etc?

 

Flat roof?

[DamonHD]

Is there no rear space beyond the conservatory?

 

Do you have a flat roof, eg on a porch, that might host the external unit?

 

https://www.installeronline.co.uk/green-energy/installing-ashps-on-roofs-and-walls-what-installers-need-to-know/

 

There are variants without external units, eg:

 

https://www.etherma.com/en/blog/heat-pump-without-outdoor-unit

[Steve1309]

21 minutes ago, JohnMo said:

What outdoor space do you have, garden etc?

 

Flat roof?

Yes, there's a garden and the roof is a standard gable, thanks

[Steve1309]

22 minutes ago, DamonHD said:

Is there no rear space beyond the conservatory?

 

Do you have a flat roof, eg on a porch, that might host the external unit?

 

https://www.installeronline.co.uk/green-energy/installing-ashps-on-roofs-and-walls-what-installers-need-to-know/

 

There are variants without external units, eg:

 

https://www.etherma.com/en/blog/heat-pump-without-outdoor-unit

Yes, there's a patio and lawn and yes, there's a porch at the front (didn't think of that), Thanks

[Conor]

You can stick it anywhere in the garden that won't be causing an inconvenience. Just need to size pipes and pumps appropriately.

[Steve1309]

14 minutes ago, Conor said:

You can stick it anywhere in the garden that won't be causing an inconvenience. Just need to size pipes and pumps appropriately.

Ok, thanks

[JohnMo]

My heat pump is behind a shed and pipes go underground to the house. No real need to go next to house.

 

But the units mentioned by @DamonHD and similar units would be a super easy swop, no plumbing to do. Concentrate on downstairs rooms and maybe panel heaters in bedrooms or leave the storage heaters in those rooms.

[Steve1309]

10 minutes ago, JohnMo said:

My heat pump is behind a shed and pipes go underground to the house. No real need to go next to house.

 

But the units mentioned by @DamonHD and similar units would be a super easy swop, no plumbing to do. Concentrate on downstairs rooms and maybe panel heaters in bedrooms or leave the storage heaters in those rooms.

Thank you, sounds like one solution may be a combination of heating types. 

[G and J]

We’ve put our heat pump 13m from the house with a buried pipe, I think that’s the easy bit. 
 

Reducing your heat requirement may help enormously too, though it’s not as exciting. Either way having a plan that details the heat emitters would be a good start. 
 

 

[saveasteading]

1 hour ago, Conor said:

need to size pipes and pumps appropriately.

And the pipes are now carrying warm water a long way, so need very serious insulation. It's standard stuff but expensive.

When I had this at about 10m I used the double core insulated product but added more insulation over the top.

[JohnMo]

11 hours ago, saveasteading said:

And the pipes are now carrying warm water a long way, so need very serious insulation. It's standard stuff but expensive.

When I had this at about 10m I used the double core insulated product but added more insulation over the top.

Only if your flow temperature is stupid high. Long outdoor pipes benefit from lower flow temperature, aim for a max of 35 and you will be fine. Then you will be fine with 25mm insulation.