Hello everyone,
we are planning a prefabricated house using timber frame construction. It will have 180 sqm (1,937 sq ft) of living space with underfloor heating, and about 230 sqm (2,475 sq ft) of usable area.
So far, the offer included an air-to-water heat pump from Daikin (Altherma 3R, formerly Rotex HPSU compact Ultra).
Now it seems that this unit might not have enough capacity (?) and as an alternative (additional cost around 4,000) we have been offered a "Wolf heat pump CHC Monoblock 10/300-35".
The Daikin is available in the 4-9 kW version—would that really be insufficient for this size? And what do you think about this offer?
I have the energy-saving regulation heat protection certification and a renewable energy heat law document available, if any information from those is needed.
Thank you very much!
Best regards
we are planning a prefabricated house using timber frame construction. It will have 180 sqm (1,937 sq ft) of living space with underfloor heating, and about 230 sqm (2,475 sq ft) of usable area.
So far, the offer included an air-to-water heat pump from Daikin (Altherma 3R, formerly Rotex HPSU compact Ultra).
Now it seems that this unit might not have enough capacity (?) and as an alternative (additional cost around 4,000) we have been offered a "Wolf heat pump CHC Monoblock 10/300-35".
The Daikin is available in the 4-9 kW version—would that really be insufficient for this size? And what do you think about this offer?
I have the energy-saving regulation heat protection certification and a renewable energy heat law document available, if any information from those is needed.
Thank you very much!
Best regards
T
T_im_Norden4 Dec 2020 19:35The purpose of underfloor heating in the shower is not to keep your feet warm, but to increase the heated surface area. With a heat pump, you need every square meter (square yard) in the bathroom as a heating surface.
Schimi17914 Dec 2020 19:58Joedreck schrieb:
Because you obviously don’t understand either the principle of a heat pump or heating in general.Oh? Looks like someone thinks they’re obviously smarter ... 🙂Schimi17914 Dec 2020 20:06T_im_Norden schrieb:
The purpose of underfloor heating in the shower isn’t to have warm feet but to increase the available heating surface area. With a heat pump, you need every square meter (square yard) in the bathroom as heating area. Earlier, warm feet were mentioned, which apparently some homeowners consider necessary for a comfortable, modern shower experience. I don’t need to extract the last fraction of a percent in efficiency from the house. There are other adjustments that make more sense. Our bathroom, as it is, is warm enough. We don’t miss the 1.2 to 1.5 square meters (13 to 16 square feet) of heating surface. If I had visited this forum 1.5 years ago, we might now have underfloor heating even in the showers.
If only... if only... (like the saying “If wishes were horses”)
But that’s not the case, and I’m not going to break down over it. Still, I will have to think about a new heating system in the coming years—whether pellets, gas, or a heat pump...
So far, I haven’t researched any type of heating system intensively. I gather information, ask questions when something is unclear (which is still often), and process it. At some point, I’ll make a decision… one way or another. You hardly fell from the sky as “experts,” right?
Schimi17914 Dec 2020 20:26The aroHERM plus is recommended by Vaillant as a heat pump suitable for existing buildings with traditional old-style radiators, as it can achieve a flow temperature of 75°C (167°F), which apparently previous heat pumps have not been able to provide. That is why I am curious. Even though our house only has two radiators that could possibly be removed.
Certainly, other manufacturers probably offer similar models as well.
Certainly, other manufacturers probably offer similar models as well.
N
nordanney4 Dec 2020 20:52Schimi1791 schrieb:
There are surely similar models available from other manufacturers as well.If you are prepared to cover the resulting electricity costs, it is possible with various heat pumps. A heating system that requires such supply temperatures will leave you financially worse off with a heat pump – significantly higher operating costs compared to the old oil heating system.
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