Air-to-air or air-to-water heat pump?

What can you say regarding indoor climate and dry air or rapid temperature control and warmth below the upper body? There is also a lot of negative talk about air-to-air heat pumps. Can you confirm this?

I can only tell you how it is with us. Apart from our house, I only know new buildings with underfloor heating. We have the Stiebel Eltron LWZ604 air and a passive house.

Dry air is a topic in just about every new building with controlled residential ventilation. I would use an enthalpy heat exchanger there. It's not a solution, but it helps.

Our heating system is slow in terms of heating up quickly. However, I believe that the heating systems in new buildings, due to the low flow temperature, are all slower compared to the old heating systems with high flow temperature.

We have the supply air at the floor and the exhaust air at the ceiling. The room temperature is nicely evenly distributed. No boiling feet and freezing heads, no unpleasant drafts.

You only want an air-to-air heat pump from Passive House standard onwards, if at all.

Don’t let any commission-driven house salespeople sugarcoat it for you. They look ahead at most as far as their warranty goes.

You, on the other hand, have to deal with it forever and a day.

With an air-to-air heat pump, you don’t have water-based heating surfaces in the house, and you can’t simply retrofit those later. Then the trouble starts with electric heaters and photovoltaic systems to limit the damage.

It’s written overly harshly now, but with those things, you have 90% trouble.

Hello, we had also considered timber frame construction at one point. After I informed myself about the heating system, that option was out. The additional cost for underfloor heating with an air-to-water heat pump was low.

What surprised me was rather that there was also cooling for the summer included at the same time. Cooling would not be possible with an air-to-water heat pump, right? So does that mean the house gets too warm in summer that cooling is necessary? Or is it just a nice gimmick?

We have now also switched to solid construction for other reasons.

Kind regards, Anna

Just try using the search here alone and you will quickly let the air out of [Luft Luft]...

Hello, we had also once considered timber frame construction. After I researched the heating system, it was ruled out. The extra cost for underfloor heating with an air-water heat pump was low.

What surprised me more was that cooling for the summer was included at the same time. Cooling would not be possible with an air-water heat pump, right? So does the house get too warm in summer that cooling is necessary? Or is it just a nice gimmick?

We have now switched to solid construction for other reasons as well.

Best regards, Anna

What does timber frame construction have to do with the type of heating? Or how is this statement to be understood? I can choose a heating system independently of the construction type (solid house or wooden house); the only difference is which combination makes sense where and where it does not?