Conor

You've probably figured this out by now, as posts above have explained, but a heatpump normally works to a set delta of flow temperature. Let's say 5c. So if your slab is 10c, the initially the water coming out will be close to 10c. So your heatpump will only deliver 15c. It will slowly ramp up to the set flow temp, e.g 30c. You can change the settings to deliver the required flow temp regardless of the return flow temperature. This just costs more. You'll get a COP of 1.5, rather than 5.

Option 6. Demolish the lot and start again. What you are planning to do will cost more and perform worse than a new build.

Day you get the completion certificate is the day you should change to a normal home insurance policy. Our self policy was voided upon completion.

Faulty seals, new units needed. Go back to your installer.

Leave that up to your renderer. All of our walls were rasped.

1. Don't trust the drawing. It could be anywhere / not exist. I've worked in the utility sector, and specifically mapping side of things and they are rarely reliable. At our last property, the drawings showed a main sewer running right through all of the gardens, and if I'd trusted it, we would not have bought the house. In reality it was a further 8m back in an alleyway. You need to get somebody out to lift a few lids and tell you what is what. 2. It will likely be a small pipe serving just a couple of houses. Shallow, but easy to deal with. 3. Build over agreements are possible, you won't know until you have all the info and speak to the water company.

Had this issue on my salda, I taped the contact shut so the error would go away. It's the Internal bypass so it's never needed as we never get temps low enough for it to activate.

All of our first floor ceilings are vaulted. Love it. Zero issues. Just avoid angled windows as they are a pain to dress.

A for the win. It all has to be the same direction, minimise or eliminate joins. We have 75m² of herringbone laminate , all centred and continuous from the front door.

I went for two 400m³ units for our 350m² (gross, 275m² net). Largely driven by shape of house and needing one unit on each side of the building. Other than duct run savings, other advantage is both units are only running at 25% capacity, so dead silent. You really want to oversize you mvhr so it's running on low rpm. Don't get a unit that scrapes the flow rates for your floor area

Your meter box will also have an non return valve.

When I had a power cut, It glitched the controller and I had to do a factory reset to get it working again. Cant remember the specific issue but sounds similar to your, unit would say "on" but nothing happened. Only issue I've had.

Render (Sto, Webber, k-rend etc) on to your ICF is by far the best option.

Our plant room is still bare screed nearly three years in. Can't see it changing.

I would not be installing a door frame on EPS. Use compactfoam or similar and set directly under the frame to act as a door block.