Hello everyone,
I had a consultation last week with a prefab house provider.
Of course, we also discussed the desired energy efficiency class for the house.
KfW55 is basically standard for prefab houses, and KfW40 is quite easy to achieve. After all, the houses basically consist of just a few wooden beams and insulation material.
Since I want to install a photovoltaic system on the roof anyway, it quickly leads to KfW40+.
My plan was to aim for KfW40+ with a solar system, an air-to-water heat pump, and underfloor heating.
My advisor now suggested an alternative: instead of the air-to-water heat pump and underfloor heating throughout the house, use infrared heating panels. This would save the costs for the heat pump (including maintenance) and underfloor heating. KfW40+ would still be achievable since the insulation stays the same and the heat energy is generated by the photovoltaic system.
I unfortunately forgot how the domestic hot water would be heated (I think either purely electric or with additional solar thermal).
A rough calculation showed that there would be no big difference in total costs. However, with infrared heating, maintenance costs and wear and tear would be eliminated.
Has anyone had experience with equipping an entire house with infrared heating?
So far, I only knew about it being used as bathroom mirrors.
Oh, and this manufacturer was recommended to me: try googling "Infrarot Riedlingen" 🙂
I had a consultation last week with a prefab house provider.
Of course, we also discussed the desired energy efficiency class for the house.
KfW55 is basically standard for prefab houses, and KfW40 is quite easy to achieve. After all, the houses basically consist of just a few wooden beams and insulation material.
Since I want to install a photovoltaic system on the roof anyway, it quickly leads to KfW40+.
My plan was to aim for KfW40+ with a solar system, an air-to-water heat pump, and underfloor heating.
My advisor now suggested an alternative: instead of the air-to-water heat pump and underfloor heating throughout the house, use infrared heating panels. This would save the costs for the heat pump (including maintenance) and underfloor heating. KfW40+ would still be achievable since the insulation stays the same and the heat energy is generated by the photovoltaic system.
I unfortunately forgot how the domestic hot water would be heated (I think either purely electric or with additional solar thermal).
A rough calculation showed that there would be no big difference in total costs. However, with infrared heating, maintenance costs and wear and tear would be eliminated.
Has anyone had experience with equipping an entire house with infrared heating?
So far, I only knew about it being used as bathroom mirrors.
Oh, and this manufacturer was recommended to me: try googling "Infrarot Riedlingen" 🙂
W
Wandervogel8516 May 2021 22:18ypg schrieb:
What was the name of the construction company that suggested this to you again?
Underfloor heating is common nowadays not only because it saves energy but also because it is very comfortable in terms of space, since you no longer have any intrusive elements on the walls.
I have also considered infrared heating for spot heating, but I think it is a bad choice as a main heating system, especially in new builds.I need to clarify this again: It was not recommended.
The standard systems usually installed are a gas condensing boiler with underfloor heating, or an air-to-water heat pump with underfloor heating. Both are great options. These are also the two technologies I would focus on.
Towards the end of the consultation, we discussed cost-conscious building and the options to qualify for full KfW subsidies. Infrared heating was mentioned as one option to achieve KfW40 or KfW40+ standards while keeping investment and maintenance costs relatively low. But this was only mentioned for completeness, not as a recommendation.
Schimi179117 May 2021 07:37pagoni2020 schrieb:
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Nothing, but I also know several people here and various ongoing threads who aren’t very satisfied with their heat pump without a fireplace and end up with high bills.
...If we were to replace our heating system with a heat pump, we would probably be among them, even though we have a fireplace.pagoni2020 schrieb:
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My acquaintance with his heat pump is just frustrated and has been tinkering with it for 2 years or paying a fortune in maintenance costs.
...I have also heard of cases like that. However, I also hear this from “risk-takers” who have a pellet heating system as their main heating source. Some have been satisfied for years, others constantly have problems. Of course, the “problems” cannot be generalized, since, for example, the wrong pellets can already cause issues.ypg schrieb:
I understand it like this:
...Yes, it takes a certain “intellect” here and there to understand the posts by @11ant 🙂Bookstar schrieb:
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A heat pump is extremely sensitive and can cause a lot of problems if something goes wrong—either it doesn’t warm properly or the efficiency drops significantly.
...Didn’t @kati1337 recently report similar issues in the bathroom and bedroom?The success of a heat pump largely depends on the skills of the HVAC installer and, unfortunately, also on the builder.
Installers could install standard underfloor heating for years or even decades without major issues. Gas and oil boilers running with poorly designed underfloor heating were also inefficient, but this did not result in significantly higher costs—at least not directly.
For heat pumps, a room-by-room heat load calculation must be performed, including a tailored design of the underfloor heating system. Then, the heat pump must be properly configured at the base level, and the user must be instructed accordingly. Unfortunately, many installers simply lack these skills but do not admit it.
When these conditions are met, you generally end up with a low-maintenance, comfortable, and cost-effective heating system.
Installers could install standard underfloor heating for years or even decades without major issues. Gas and oil boilers running with poorly designed underfloor heating were also inefficient, but this did not result in significantly higher costs—at least not directly.
For heat pumps, a room-by-room heat load calculation must be performed, including a tailored design of the underfloor heating system. Then, the heat pump must be properly configured at the base level, and the user must be instructed accordingly. Unfortunately, many installers simply lack these skills but do not admit it.
When these conditions are met, you generally end up with a low-maintenance, comfortable, and cost-effective heating system.
Schimi1791 schrieb:
Didn't @kati1337 recently report similar issues in the bathroom and bedroom?I wouldn’t call them issues; I would build again with an air-to-water heat pump anytime. It’s just that the fine-tuning still needs some work. But that’s more a matter of personal preference—I’d just like it a bit warmer in the bathroom.Schimi179117 May 2021 08:25kati1337 schrieb:
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But that’s just personal preference—I like it a bit warmer in the bathroom.Maybe that could be achieved with an infrared heater.Similar topics