Oz07

Does this apply for A2A or do they switch between heat and cooling fine?

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?

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

Just similar to an aircon unit then?

Are the fan coils excessively noisy then?

So bit like radiators bigger fan coils for lower flow temp difference between target and flow. Any pics of your units so I can see how they look. I suppose I really need my detailed drawings and heat loss calcs before I start looking which will be some time off. I can tell its going to be hard work finding the right gear if I have to start looking at MI's

Good to know it will be less than i thought. Is there a good brand of fan coil to get or do you try and match the manufacturer of the heat pump? Presuming these heat if needed in winter too? When you say other option run at same temperature do you mean same temp as UFH? I'm pretty sure we can manage without the artic blast of AC as long as the fcu are effective. I am trying to take steps to reduce heat gain i have asked architect to specify a pergola off rear SE elevation with climbing plants on it. Should keep the worst of midday sun off the patio glazing. Running a condensate with dry trap wouldnt be the hardest job in the world but it sounds like these fcu are going to make the system simpler.

How do you keep the flow temp above the dew point? Is it a set static temperature or does it depend on the outside air temp and/or humidity. Do you have to do the same with the ufh? Does the system take care of this or do you manually have to set some kind of stat?

Taking off few courses is easiest. There may be an alternative though. How much higher is ffl than the top of your current blockwork level. Instead of the planned buildup can you not do mot, dpm, insulation, gas membrane, self compacting concrete slab. No screed needed and brings your membrane level up higher so stripping off less masonry or maybe none? Why have you sacked brickie 2 is it to do with this or something else?

blockwork looks much better this time!

I think i'd be digging out the pea gravel, bedding and surrounding these in lean mix concrete. Possibly a 25mm bit of eps where the pipe joint is to allow some movement. You don't really want the ground at the edge of you slab settling.

Do you need a condensate drain in the wall for these air cons and fan coils presumably?

Im Midlands so hopefully a bit more reasonable. If we exclude the price of UFH and manifold from the equation. I imagine I will have this whatever method of heating I choose. Also I will partially DIY this with either a plumber to connect up the manifold or both of us for the day to do the lot. Likewise can probably exclude the cost of cylinder as again will be fitted no matter what. So if the rest is 15k and can get the 7.5k grant then I suppose it's not too bad. If it starts getting up to 20k upwards or 15k and no grant then i would seriously be looking at a gas boiler (if SAP allows). Boiler installation, exc UFH and cylinder would easily come in below 5k supply and fit. Ideal world i'd like something like the Samsung option but like others I suspect it's pricey. I had a look at fan coils tonight online and the Daikin wall mounted ones look just like the aircon units. Are they just not as effective if powered by A2W instead of A2A? So if we say I was happy to spend 5k (guesstimate) on a couple of aircon units and a traditional boiler system would be 5K (all excluding UFH and Cylinder) then 10k is my baseline. If I am getting 7.5k grant back then I can look at spending around 17.5k on a system and still be happy. That's my man maths anyway.

I'd of thought any stone cill supplier would knock you one up. Obviously it would cost as bespoke. I've used Serene Stone before, try them.

I think Samsung offer a charged unit or manifold or god knows what if you exceed the distance. Can't see it being needed on mine with clever placement of outside unit and pipework runs. It's only 1500 sq ft ish. Mine will be nowhere approaching Passive, but better than building regs. I've done the numbers on passive and it just doesn't work for me i'm happy to spend a few extra quid running the place and have the bandwidth free to think about other things.