Different Heating Concepts Compared

This is about a VRF system and not a pure split air conditioning solution that is known from 99% of offices.

1. Why should that be the case?
2. rH is always also a measure of comfort. The fact is that an air-water heat pump does not dehumidify and requires an additional device for that.
3. Investment costs = equipment costs
4. Installation costs = craftsmen costs
5. are approximately the same
6. This is about VRF systems
7. Hot water is provided by instantaneous water heaters
8. No
10. Eligibility for funding includes an option for night setback operation. Meanwhile, this is also possible in the VRF system.
11. Comfort = indoor air quality, operability (simultaneous heating + cooling in different rooms).

this is about a VRF system and not a pure climate split solution that you find in 99% of offices.

Explain the difference. ;-)

1. why should that be?
2. rH is always also a comfort measure. The fact is that an air-water heat pump does not dehumidify and needs an additional device for that.
3. Investment costs = equipment costs
4. Installation costs = craftsman costs
5. are approximately the same
6. this is about VRF systems
7. hot water is done via instantaneous water heater
8. no
10. the eligibility for funding foresees the possibility of night setback operation. Meanwhile, this is also possible in VRF systems.
11. Comfort = indoor air quality, operability (simultaneous heating + cooling in different rooms).

1. Air-to-air heat pump is less efficient due to smaller surface area of the sink
2. The fact is also that an air-to-air heat pump dehumidifies and that lowers comfort when the air is too dry.
3. 4. Yes, who cares to split that in such a list?
5. Wrong claim, even though I already gave the reason.
6. Yes, and?
7. Yes, what does that have to do with VRF systems? And why not BWWP. Has to be considered separately.
8. Haha, where do you want to place the indoor units then?
10. Yes, I’m saying that.
11. Is really totally nonsense in the graphic.
For me, the constant noise and the draft would be an absolute no-go and here there is simply a green checkmark as if the problem doesn’t exist.
Who cares if I maybe have slightly more separable ERR?

Anyone can google the difference, I trust everyone that much ;-)

The indoor units are placed in the suspended ceiling.
It’s about the space requirement in the basement or utility room. The price per square meter for such a "waste of space" is now much too expensive.
And when I see something like what I have ( ), you can't argue away the issue of space requirements or possibilities for alternative room usage...

A completely different matter is the user-friendliness and the effort to properly set up an air-water heat pump. I claim that 80% of installers still don’t know how to do that. Not to mention the often botched hydraulics and hydraulic balancing. The forums are full of that...

Just visit a show home park. There are already some that present and show something like this. Then you can see for yourself what the airflow and noise situation is like ;-)

Anyone can google the difference, I trust everyone that much ;-)

Too bad, I would have loved to hear it in your own words.

The indoor units are placed in the suspended ceiling.

Ah yes, because cassette-compatible suspended ceilings are so common in single-family homes...

And when I see something like I have...

A completely different role is played by the user-friendliness and the effort required to properly set up an air-water heat pump. I claim that 80% of installers still don't master this. Not to mention the often botched hydraulics and hydraulic balancing. The forums are full of it...

Now I understand, because you are dissatisfied with your heating technician and your solution, you are now saying that this solution should preferably no longer be pursued.

Just go to a show home park. There are already several that present and show something like this. Then you can form your own impression of drafts and noise levels ;-)

Already done all that. Although a show home park is a terribly bad place for that.

Better talk to people who live in such a house and preferably also know the alternative.

Sure, this system also has its advantages, but the list is really rubbish and does not represent the differences correctly at all.

Now I understand, because you are dissatisfied with your heating system and your solution, you are now saying that this solution should best no longer be pursued.

Where do I say that? I am simply concerned about the susceptibility to errors, which is much higher in the overall installation of an air-to-water heat pump. There is still a very big difference between theory and practice here, unfortunately. See internet forums, etc. An air-to-air heat pump offers a very good alternative here. Of course, every builder should familiarize themselves with the advantages and disadvantages.

Unfortunately, I don't know why you doubt this list so much; it was not "rolled."

So my cousin has an air heating system, as well as two neighbors. They each also have an additional BWWP, and there is absolutely nothing space-saving about it. These Proxon monsters are probably around 2 sqm, and due to the piping going upwards, the space above is also not usable. A more space-saving solution would probably be a combined system Controlled Residential Ventilation + Air-Water Heat Pump, like the Tecalor 504. Provided you have no reservations about installing a heating device for around 40k. And yes, of course you can mess up a lot with the hydraulics or just design it simply as a standard 08/15 with 35 degree flow temperature. But even the botched underfloor heating will hardly become as inefficient as an air-air heat pump. In this respect, it simply comes down to acquisition costs versus running costs.