ᐅ Heating System for New Construction – Which Is the Best Option?
Created on: 7 Oct 2017 20:33
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FlohJoe
Hello,
starting next week, I will be building a single-family house of 180 m² (1,938 sq ft). Many details have already been finalized, but I keep changing my mind about the type of heating. Initially, I was convinced to go with a gas condensing boiler combined with tube collectors. Then I considered an air-to-water heat pump. Now I am leaning towards a pellet heating system. There is also the Vitovalor from Viessmann, which I find interesting—generating electricity myself..
Basically, I want to be as self-sufficient as possible regarding energy supply. So, perhaps an air-to-water heat pump with photovoltaic panels and a water-based fireplace? I’m a bit overwhelmed. Maybe someone here can give me some advice on what is feasible..
Best regards, Florian
starting next week, I will be building a single-family house of 180 m² (1,938 sq ft). Many details have already been finalized, but I keep changing my mind about the type of heating. Initially, I was convinced to go with a gas condensing boiler combined with tube collectors. Then I considered an air-to-water heat pump. Now I am leaning towards a pellet heating system. There is also the Vitovalor from Viessmann, which I find interesting—generating electricity myself..
Basically, I want to be as self-sufficient as possible regarding energy supply. So, perhaps an air-to-water heat pump with photovoltaic panels and a water-based fireplace? I’m a bit overwhelmed. Maybe someone here can give me some advice on what is feasible..
Best regards, Florian
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Bau-Schmidt11 Oct 2017 13:19I have chosen an air-to-water heat pump with underfloor heating for a KfW 55 standard house.
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R.Hotzenplotz24 Oct 2017 14:49We wanted a geothermal heat pump, but today we learned that the installer checked the geological maps and found that drilling would have to go deeper than 100 meters (330 feet) — if it’s even permitted — and that would be way too expensive.
He now recommends an air-source heat pump, the Waterkotte AI 1 Eco Touch with 18 kW. This system requires an outdoor unit mounted on the wall, which I find very unattractive from an aesthetic point of view. Terrible!
The alternative is a Viessmann gas boiler with solar or photovoltaic support. According to the general contractor, this is a significantly more expensive option in terms of upfront costs. But just to avoid having that ugly outdoor unit, we’d be willing to pay a bit more.
I quickly looked it up, but as far as I can tell, the Waterkotte model isn’t even an air-to-water heat pump.
What do you think?
He now recommends an air-source heat pump, the Waterkotte AI 1 Eco Touch with 18 kW. This system requires an outdoor unit mounted on the wall, which I find very unattractive from an aesthetic point of view. Terrible!
The alternative is a Viessmann gas boiler with solar or photovoltaic support. According to the general contractor, this is a significantly more expensive option in terms of upfront costs. But just to avoid having that ugly outdoor unit, we’d be willing to pay a bit more.
I quickly looked it up, but as far as I can tell, the Waterkotte model isn’t even an air-to-water heat pump.
What do you think?
The installer has a crack in their bowl.
First of all, of course deeper than 100m (328 feet). A total depth under 100m (328 feet) means heating loads below 5-6 kW, which is unlikely for such a large house.
The important 100m (328 feet) limit can be handled with an additional application; it’s no problem at all. Of course, there are always reasons for rejection, but is there really any indication for that?
Setting that aside, an 18 kW heat pump—are they out of their mind?! Do they want to heat a multi-family house?!
Get rid of the installer. They only know gas and have no clue about heat pumps.
First of all, of course deeper than 100m (328 feet). A total depth under 100m (328 feet) means heating loads below 5-6 kW, which is unlikely for such a large house.
The important 100m (328 feet) limit can be handled with an additional application; it’s no problem at all. Of course, there are always reasons for rejection, but is there really any indication for that?
Setting that aside, an 18 kW heat pump—are they out of their mind?! Do they want to heat a multi-family house?!
Get rid of the installer. They only know gas and have no clue about heat pumps.
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R.Hotzenplotz24 Oct 2017 14:58This is a general contractor plumber. I can’t just fire him. However, I can possibly advocate for an alternative solution using factual arguments.
Do you know where to find those geological maps that show whether a ground source heat pump makes sense or not?
I just want to make sure I didn’t misunderstand the drilling depth and that it’s more than 150 meters (490 feet). It was also the general contractor, not the plumber, who told me that. But I can call him as well.
Do you know where to find those geological maps that show whether a ground source heat pump makes sense or not?
I just want to make sure I didn’t misunderstand the drilling depth and that it’s more than 150 meters (490 feet). It was also the general contractor, not the plumber, who told me that. But I can call him as well.
PS: Request a heating load calculation, room by room. He should provide evidence for the 18 kW (if he wants to drill for 18 kW, it’s clear that it will be expensive…). Don’t forget, geothermal energy has a €5000 (about $5400) subsidy from BAFA (which almost completely covers the drilling costs for us).
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winnetou7824 Oct 2017 15:33Exactly, same here,
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