Construction costs are currently skyrocketing

Yes Arotherm plus 75/6. I also have no delivery date. Originally wanted to move in December, which has now fallen through (not only because of missing heating). Now I’m aiming for February. Temporary solution is electric heater (2000 W) + infrared panel (400 W) on the ground floor and infrared panel (800 W) on the upper floor. This currently achieves temperatures in the house of about 14-16 degrees. When it was -5 to 0° C for two weeks, I had 10-12°C in the house. That’s just about enough as frost protection and to prevent too much moisture from condensing, but now I am doing painting work and from today the tilers are working. That brings a lot of moisture in again and I can’t get it warm enough, or it’s too humid outside to ventilate...

Yes arotherm plus 75/6. I also have no delivery date. Originally wanted to move in in December, which has now fallen through (not only because of missing heating). Now I’m aiming for February. Temporary solution is fan heater (2000 W) + infrared panel (400 W) on the ground floor and infrared panel (800 W) on the upper floor. With that, I currently achieve temperatures in the house of about 14-16 degrees. When it was -5 to 0°C for two weeks, I had 10-12°C in the house. That’s just about enough as frost protection and to prevent too much moisture condensating, but now I’m doing painting work and from today the tilers are in. That’s bringing in a lot of moisture again and I can’t get it warm enough, or it’s too humid outside to air out...

How was your screed heated? With us, this mobile electric heating unit will stay in place until delivery. Maybe you can organize that too? The flow temperature is set to 25°, it’s comfortably warm above 20°. At 5 to 8 degrees outside temperature about 40 kWh per day for us. Since yesterday a photovoltaic system with 13.68 kWp is running, at least helping to reduce consumption during the day. Currently floor layers, painters and tilers are on site. From the heating installer’s side, I have an offer for installation of an 80-liter hot water tank as a temporary solution.

Does anyone also have supply problems with gas boilers?

Screed functional heating and basically surface readiness heating were also carried out with a mobile heating unit. But since other customers also couldn't get a heat pump, my heating engineer needed it at another construction site. He offered me a 5 kW fan heater, but I thought I could heat more evenly with several small sources. In the meantime, I had the idea of simply getting another monoblock heat pump as a temporary solution, but that involves a lot of effort and resale losses. Besides, I thought that relying on a priority list from the manufacturer would translate into a short-term delivery. In hindsight, the temporary heat pump would probably have paid off soon...

Screed functional heating and, in principle, covering readiness heating were also carried out with a mobile heating center. But since other customers also couldn’t get a heat pump, my heating engineer needed it on another construction site.
He offered me a 5 kW heating fan, but I thought that with several small sources I could heat more evenly.
In between, I had the idea to simply get another monoblock heat pump as a bridge, but this is associated with great effort and resale losses. Besides, I thought that relying on a priority list from the manufacturer would result in a short-term delivery.
In hindsight, the bridging heat pump probably would have paid off soon...

I just reread your topic. Are you having stress with the moving-out date? We are still renting the house we sold. It would be possible at least until the end of March. But who wants such a double burden voluntarily.
Would you move into the new house if the heat pump is missing but heating and hot water production are temporarily solved by alternatives?
What does your heating installer say about the delivery date Vaillant? Mine doesn’t even have vague guesses.

I can only say that I moved in without a finished bathroom for 10 days. There was hot water, but fixtures, leftover tiles, shower screen, silicone, etc. took their time after all. It was pretty annoying and I wouldn’t do it again. (there was no time pressure since it was a condominium, but my wife really wanted to move) But I think there should somehow be hot water for the shower and a room temperature of 17-18°C.