air-to-air heat pump

We are planning a timber frame house with good U-values in the areas of exterior walls, floor slab, roof, and windows, so that we will install a controlled residential ventilation system. Now we are considering installing a ventilation heating system with the technology from Schwörerhaus or a Proxon system by Zimmermann. We will also include a Swedish stove, whose heat in winter can be distributed to other rooms via the ventilation system for warmth. With this concept, a classic underfloor heating system is not necessary.

Now we are faced with the question of whether our considerations are correct and if this would be a good decision. Because if this turns out to be a mistake, it will only be possible to retrofit an underfloor heating system with an air-water heat pump or gas condensing technology with an extreme amount of effort.

Has anyone among you already had several years of experience with our heating concept?

Many thanks for your contributions.

Hello,

We are planning a house in timber frame construction with good U-values in the areas of exterior wall, floor slab, roof, and windows, so that we will install a controlled residential ventilation system.

The decision "Pro" controlled residential ventilation is not dependent on the U-value of the wall or the exterior components.

...Now we are thinking about installing a ventilation heating system with the technology from Schwörerhaus or a PROXON system from Zimmermann. ...Now we are faced with the question whether our considerations are correct and if that would be a good decision.

Air is a poor energy storage and transport medium. This also applies to the Proxon comfort technology. Air heating systems therefore only work with very low room and total heating loads, such as passive houses or buildings close to passive house standard. However, one should not rely on the PHPP heating load calculation here, but rather use DIN 12831.
Whether one solution or the other is suitable can only be reliably answered once the specific calculations have been carried out. Before that, it is a look into a crystal ball.

...Has anyone of you already had several years of experience with our heating concept?

The experience of other builders is hardly helpful, since every building has its specific peculiarities and conditions, the climate location is different, and the user behavior is probably not identical either.
Before making a decision or signing a contract, these calculations should, if possible, be carried out by an external expert (MEP planner) who has nothing to do with the sales of the project.

Best regards

Hello €uro,

thank you very much for your comments. Are you a TGA planner?

best regards

..thank you very much for your comments. Are you a TGA planner?

I have also studied TGA planning, energy consulting, and civil engineering.

Best regards.

Hello €uro,

please do not take it amiss, but your comments somewhat suggest that you aim to sow a bit of uncertainty so that your professional group is contacted as often as possible. For this reason, I did not post my questions here. I had hoped to get a few useful pieces of information.

Furthermore, I consider your statement that controlled residential ventilation has nothing to do with the exterior components to be factually incorrect. Without presenting your professional studies, I believe I have understood that a tight building envelope makes controlled residential ventilation necessary. I am quite aware that a tight building envelope is not directly related to the U-value, but you will hardly get a timber frame house with good U-values where the exterior skin is as open as Swiss cheese.

As you can infer from my commentary, I would have wished for a few more qualified and above all more useful remarks from a construction professional, which you might possibly be.

Best regards

Hello,

I am always amazed over and over again by what some people expect from a forum. And if they don’t like the answer, they get rude.

Dear Mr./Ms. Koldi, Mr. €uro merely tried to explain that the use of a residential ventilation system has nothing, absolutely nothing to do with the U-values. The fact that you had this assumption was evident from the initial question.

Furthermore, I read the answer as saying that an air heating system is probably rather unsuitable. And what the right concept for your building is can really only be determined by a planner on site who carries out the necessary calculations.

In my opinion, that is a statement one can actually work with.

The question is, why don’t you have a planner? Probably it is your concept and you cannot accept that experts doubt this concept.

Regards