Hello,
I am going to build a new house of about 150m² (1,615 ft²) and I have a difficult decision to make. I was offered the following options for heating:
1. Vaillant gas condensing boiler compact unit + solar thermal system + decentralized ventilation with heat recovery
or
2. Rotex 8kW air source heat pump + ventilation WITHOUT heat recovery and without solar thermal system
Both options are apparently almost the same price. I might even save money with the heat pump because I don’t need a gas connection. How would you decide?
At the moment, I am leaning towards the air source heat pump. Would that be the right choice?
Thank you in advance and please be kind. This is my first post.
I am going to build a new house of about 150m² (1,615 ft²) and I have a difficult decision to make. I was offered the following options for heating:
1. Vaillant gas condensing boiler compact unit + solar thermal system + decentralized ventilation with heat recovery
or
2. Rotex 8kW air source heat pump + ventilation WITHOUT heat recovery and without solar thermal system
Both options are apparently almost the same price. I might even save money with the heat pump because I don’t need a gas connection. How would you decide?
At the moment, I am leaning towards the air source heat pump. Would that be the right choice?
Thank you in advance and please be kind. This is my first post.
N
Nikitierchen10 Aug 2019 12:46Thank you all for the advice. I was just a bit worried that the option of gas + solar + heat recovery would be MUCH better than simply a heat pump, but now I’m reassured and will choose the heat pump.
Thank you.
Thank you.
Rosmarin schrieb:
Hello Bookstar, why is that? I once had a Meltem, and some acquaintances have Lunos. A decentralized ventilation system does not belong in a single-family house due to its disadvantages. It is a single-room solution, for example, for the bathroom or for multi-family buildings.
Disadvantages: much too loud, inefficient heat recovery, sound bridge, gets very dirty, no pre-filter, strong draft sensation, not visually appealing inside or outside.
You don’t have to experience all the disadvantages, but most of them are inherent to the system.
And if you want to ventilate a single-family house effectively and fully with it, it costs about the same as a centralized system.
@OP: Please listen to the Rotex in winter beforehand and consider the neighbors and where the unit is positioned.
rick2018 schrieb:
I would replace solar thermal with photovoltaic panels.
At least that is cost-effective and less prone to issues.
Otherwise, I agree with Bookstar. That is not so simple. This would mean losing the renewable share in heat generation.
B
boxandroof10 Aug 2019 14:00guckuck2 schrieb:
That is not possible just like that. Then the renewable share for heat generation is missing.It works with mechanical ventilation with heat recovery, even though many providers cannot or do not want to offer it. From KFW 55 standard onwards, using gas becomes very difficult or even impossible. There are general contractors who offer standard single-family homes under the Energy Saving Ordinance with gas plus mechanical ventilation as standard. That also makes sense because mechanical ventilation with heat recovery provides real benefits.Heat pumps require expertise, gas systems anyone can handle.
Heat pumps are relatively new technology, while gas is "the way it’s always been done."
With heat pumps, you need to be more proactive to ensure that the domestic hot water system (DHW) is installed correctly and not poorly. As a homeowner, you have to be more involved. In my opinion, however, it’s better in the long run.
Heat pumps are relatively new technology, while gas is "the way it’s always been done."
With heat pumps, you need to be more proactive to ensure that the domestic hot water system (DHW) is installed correctly and not poorly. As a homeowner, you have to be more involved. In my opinion, however, it’s better in the long run.
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