Gas or heat pump? Experiences / Feedback

I already thought that you have time pressure regarding the decision, it was similar for us.

Take a look at the "Aquarea Club" page on the internet. There is a lot of information about what to consider with heat pumps, which does not only apply to the manufacturer mentioned there. If you follow the concepts there and your house manages with a 5kW heating load, then you have a very good and economical heating system. That’s how we did it with our system as well. An even better alternative would be a trench collector, especially if you live in a colder area. Both are approaches that you cannot just order anywhere from the local heating installer. We did not do much of the work ourselves, but I did not let the craftsmen do whatever they wanted; I gave specifications.

The underfloor heating must be planned properly, that came from a good heating installer. Goal: supply temperature at NormAt of about max 30 degrees.

You have to ensure the good planning and later operation yourself; the experts usually don’t do that for you.

In post #32 I described our running costs compared to gas, somewhat better than KfW55, controlled residential ventilation, 150m2. Add 30-50% to the pure consumption costs (gas/electricity), then it fits with good planning and a larger house.

The offers you get are decisive. A compact air-to-water heat pump (not split) is well suited for own work or own purchasing. Expensive split units can lead to additional ongoing maintenance costs.

I already suspected that you are under time pressure regarding the decision, it was similar for us.

Take a look at the "Aquarea Club" page on the internet. There is a lot of information about what to consider with heat pumps, not only for the manufacturer mentioned there. If you follow the concepts there and your house manages with a 5kW heating load, then you have a very good and efficient heating system. That's how we did it at our place. The even better alternative would be a trench collector, especially if you live in a colder area. Both are approaches that you can't just order from any local heating installer. We didn't really do much ourselves, but I didn't let the craftsmen do as they pleased, I gave them specifications.

The underfloor heating must be properly planned, that's where a good heating installer comes in. Goal: flow temperature at norm heating load about max 30 degrees.

You have to ensure good planning and later operation yourself, the experts usually don't do that for you.

In post #32 I described our running costs compared to gas, somewhat better than KfW55, controlled residential ventilation, 150m2. Add 30-50% to the pure consumption costs (gas/electricity), then it fits with good planning and a larger house.

Crucial are the offers you get. A compact air-water heat pump (not split) is well suited for own work or own purchasing. Expensive split units can cause additional ongoing maintenance costs.

Thank you very much for your reply!

When I read post #32, an air-water heat pump seems more positive to me.
I have now read quite a bit of information on the Aquarea Club page.

But what do you mean by split?
That we get everything completely from one source or what?

Sorry, we are really unsure and afraid of doing everything wrong.
That’s why every expert advises us simply to go with gas and we are worried they just want to take the easy way out.

In a split unit, one part of the heat pump is outside and one inside, which should not be installed by a layperson. Alternatively, there are mono units, a single outdoor unit, where you only need to connect electricity and water.

With a split unit, part of the heat pump is outside and one inside; as a layperson, you should not install it yourself. Alternatively, there are mono devices, a single outdoor unit, where you only need to connect power and water.

Thanks to you. So we arranged it like this. We order the system through the heating engineer, and everything else we try to do ourselves as best as we can. Of course, he does the final acceptance, and in the meantime, we have an uncle and an acquaintance who work in heating companies themselves and help us. But we would actually tend to a split unit, meaning the system is in the utility room, and the fan (?) outside (because of noise).

Actually, there is nothing that speaks in favor of a split unit - or I don't know what it would be. It is not the noise.

Actually, there is nothing in favor of a split unit - or at least I can't think of anything. It's not the noise.

Ah okay, thanks also for this info. That means you just look for a compact unit that doesn't have any other devices placed elsewhere. Does this mean that if we decide on the air-water heat pump, we wouldn't have to plan any pipes under the foundation slab for it at all? We had once heard that a system in the utility room already makes noise if you don't use a split unit. Especially since the children's room is above the utility room.