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
H
Hausbau 554 Nov 2021 13:34Alessandro schrieb:
Is the room location also considered in the heating load calculation (proportion of external walls)?
What nominal output does your heat generator have? Yes, we have a complete heating load calculation for each individual room. Beforehand, a thermal insulation assessment of the house was carried out. We received the sizing for the heat pump from Vaillant; the model to be installed is the Arotherm Plus 35/6 (3.6 kW).
R
RotorMotor4 Nov 2021 15:16Maybe located inside or something like that?
H
Hausbau 554 Nov 2021 16:10Bathroom has 9.8 m² (105.5 sq ft) of net exterior wall, utility room has 15.5 m² (166.8 sq ft) of exterior wall. Both, of course, have windows. No additional heating, but different installation spacing for the underfloor heating: bathroom 5.5 cm (2.2 inches) and utility room 11 cm (4.3 inches).
A
Alessandro5 Nov 2021 08:09tomtom79 schrieb:
Nowadays? I hardly think a bathroom without a window… not unless there’s a 300-watt supplementary heater somewhere…An interior bathroom doesn’t necessarily mean it has no windows. But there is a difference between a bathroom with two exterior walls and one with only one.
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