City villa with hipped roof 140m²

Utility room our control cabinet is about 1.4 m high and over 1 m wide, on the opposite side is the multi-utility connection, armored fuse, water,
Take a look at the technical data to see how much space your pump requires. (ours has 2 sqm, however we do not have an outdoor unit)
Don’t know how it looks with underfloor heating what it needs in the technical room. Hot water also needs to go somewhere
Then also washing machine, dryer, dirty laundry, sink for hand washing or soaking stains
Really draw everything in and keep the necessary distances for maintenance and safety - wall in

About the bedroom 3.6 m - 0.6 (closet) - 2.0 m (bed) = 1 m rough dimension minus (closet doors, bed frame) 3.4 m - 2.0 m (bed) = 1.4 m rough dimension minus bed frame makes max 70 cm per side up to the wall is that enough for you? Window above the bed To open, clean etc. you always have to climb onto the bed and cover the bed while cleaning or make it afterward. Not comfortable Yes, double washbasin makes the bathroom small, but you are 4. I would add the small gallery in the hallway to the bathroom and take about 2 sqm from each of the two children's rooms to make a small storage/laundry room Downstairs is also missing storage, wardrobe. Does the office have to be that big?

So, I don’t want to offend you, but your house is only 135 sqm! Not 140 sqm.

Otherwise, upfront – basically, you can’t really assess the usefulness because the room dimensions are missing.

Upper floor:
- We have a 14.7 sqm bedroom – a 3m wardrobe fits in there, a dresser, and a 2x2m bed. That means a dresser would be omitted in your case. I can’t judge whether the room dimensions are correct; possibly the paths around the bed are too narrow.
- Use the unused space in the hallway for the bathroom. What do you want with an extra 1.5 sqm of hallway?
- Children’s rooms are okay.

Ground floor:
- Living room/kitchen/dining area not assessable (no room dimensions). Gut feeling: the living room is 3.60m deep (minus exterior walls, interior walls, etc.). That’s really little over a length of 9.60m. It won’t feel nice. Also, there is too little window area and the furniture you have fills up what you do have.
- Technical room too small. Do you want the LLWP or the general contractor? With that, you give up underfloor heating. Read up on the topic and reconsider!
- No opinion on the study. Could be smaller. Teacher?

The house basically has no usable space. Therefore, the garage will never be a garage where cars are parked.

In addition, these are all shell dimensions from your general contractor and thus even less living area and window area than you read there.

Please draw a cloakroom for 4 people with a toddler and a stroller. Also draw complete technology including a washing machine in the utility room.

Overall, there is too little storage and utility space. Do we really need this office / guest room? It will become a junk room anyway due to the lack of space - I bet!

We are also not quite sure how the cloakroom should look, maybe between the bathroom and technology door. And yes, the stroller will no longer fit in the hallway.
I cannot estimate how big the technology will be, but it should fit plus a 250 l water tank.
Since my wife is a teacher and I do a lot of home office, we definitely need a quiet study room. A bed is definitely not planned there.

Are you building a passive house? I can’t quite imagine that with this budget.

No, not a passive house but KFW55 standard

Utility room: our control cabinet is about 1.4 m high and over 1 m wide, on the opposite side is the multi-utility connection, fuse protection, water,
Have a look at the technical data to see how much space your pump needs. (ours has 2 sqm, but we have no outdoor unit)
Don’t know how it looks with underfloor heating and what it needs in the technology room. Hot water has to go somewhere too.
Then also washing machine, dryer, dirty laundry, sink for handwashing or soaking stains.
Really draw everything in and keep the necessary distances for maintenance and securing - wall in.

I will try to draw everything over the weekend with the data I have. I am slowly getting really worried whether it will all fit.
We are planning no underfloor heating for this.

Honestly, as already wrote, read up on the topic, air-to-air is nonsense if you don’t insulate to Passivhaus standards, you might as well thermally use banknotes directly.

Have you already discussed the heating load? Probably not.
As a guideline, air-to-air heat pumps are suitable for a heat demand below 10 watts/sqm. For KFW55 you’re more likely at 30 watts/sqm.
Nothing set in stone but just as a starting point. (At least that’s what I researched once)

I think with 5 sqm you’d have the smallest utility room/heat transfer room I’ve seen here so far (well, I’m no old hand).

Even if it should work on paper... you don’t want that.

Heat pump/heating

I find it very pleasant to use the supply air as "heating." There is no draft. At least in passive houses. The airflow is not noticeable, unless you stand barefoot at the outlet. The disadvantage is that the rooms cannot be tempered differently. If you want it warmer in the bathroom, for example, you need an infrared heating mirror or an electric towel radiator. We have a water-driven towel radiator in the bathroom. The system is also extremely slow. I believe every modern underfloor heating is still faster. Simply turning on radiators to get warmth does not happen here.

Air heat pumps use the supply air, warm it in winter with exhaust air heat, and the difference is supplemented with electricity.

Air-water heat pumps have a refrigerant circuit and a compressor. This allows them to generate heat from the air even at subzero temperatures. With that and the waste heat, the fresh air is warmed. If anything is still missing, the electric auxiliary heater is used. So much later than with a pure air heat pump.

There are also combined units with air/water inverter heat pumps (refrigerant circuit, compressor) and instead of underfloor heating, the ventilation ducts are used. We have this as a pilot system and I think it is only for passive houses or similar.