F gas A2A and A2W

[Oz07]

23 minutes ago, JohnMo said:

Be careful if you bother doing a cooling heat gain calculation, as instantaneous solar gains can give you a huge heat gains. Others on here have tried it got 20kW cooling requirements and 2kW heating requirements. Then got bogged down with indecision. Size your heat source for heating needs, accept cooling isn't perfect, but better than nothing. Or go full A2A. Be pragmatic or pay £20k for a good plated solution.

 

Think @Nickfromwales did a cooling solution where he cooled the upstairs/downstairs hallway instead of the bedrooms directly. That sort of solution cuts the number of fan coils needed, moves noise away from bedrooms and any drafts away caused by fan coils.

Are the fan coils excessively noisy then?

[JohnMo]

8 minutes ago, Oz07 said:

Are the fan coils excessively noisy then?

No not noisy, but there is some fan noise depending on fan speed.

[Oz07]

3 minutes ago, JohnMo said:

No not noisy, but there is some fan noise depending on fan speed.

Just similar to an aircon unit then?

[JohnMo]

4 minutes ago, Oz07 said:

Just similar to an aircon unit then?

Basically, same design really one uses water the other refrigerant

[Oz07]

Why are some wall mounted, like aircon and some floor mounted like radiators? I need to visit a house with these working.

[JohnMo]

1 hour ago, Oz07 said:

Why are some wall mounted, like aircon and some floor mounted like radiators

Personal choice 

[Nickfromwales]

3 hours ago, JohnMo said:

Be careful if you bother doing a cooling heat gain calculation, as instantaneous solar gains can give you a huge heat gains. Others on here have tried it got 20kW cooling requirements and 2kW heating requirements. Then got bogged down with indecision. Size your heat source for heating needs, accept cooling isn't perfect, but better than nothing. Or go full A2A. Be pragmatic or pay £20k for a good plated solution.

 

Think @Nickfromwales did a cooling solution where he cooled the upstairs/downstairs hallway instead of the bedrooms directly. That sort of solution cuts the number of fan coils needed, moves noise away from bedrooms and any drafts away caused by fan coils.

That was the original plan, when considering a combined hydronic solution with heat / cool via slab / MVHR / one big built in fan coil unit to scavenge the excess heat from the first floor.

 

Binned that now in favour of full AC, all built in to purpose made ‘hideouts’ with 4 units for 4 bedrooms, and a large 5th unit for the large gallery aspect / FF landing.

 

Each bedroom will have it’s own stat so each can respond linear to sunshine / solar effects, but also so the second they're not needed anymore they go into standby.

 

As always, early prevention means you don’t need an aggressive cure. 

[Oz07]

1 hour ago, Nickfromwales said:

That was the original plan, when considering a combined hydronic solution with heat / cool via slab / MVHR / one big built in fan coil unit to scavenge the excess heat from the first floor.

 

Binned that now in favour of full AC, all built in to purpose made ‘hideouts’ with 4 units for 4 bedrooms, and a large 5th unit for the large gallery aspect / FF landing.

 

Each bedroom will have it’s own stat so each can respond linear to sunshine / solar effects, but also so the second they're not needed anymore they go into standby.

 

As always, early prevention means you don’t need an aggressive cure. 

What could be less aggressive than an aircon unit for each room? Or you mean atleast you've planned for it so no reason routing services? Have you taken a condensate to each ac location?