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
Use Google. If I mention other forums, I get banned.
There are even tools that help with calculations.
Regarding layering: Excavator operators know what they’re doing. For a similarly sized plot, we excavated section by section, installed the rings, and then closed it up again. And yes, 1.80m (6 feet). At least in the projects I was involved in.
There are even tools that help with calculations.
Regarding layering: Excavator operators know what they’re doing. For a similarly sized plot, we excavated section by section, installed the rings, and then closed it up again. And yes, 1.80m (6 feet). At least in the projects I was involved in.
D
Deliverer17 May 2021 12:12HTD Forum. They handle all the planning for you.
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RotorMotor29 Jun 2021 21:35OWLer schrieb:
The wall heating was corrected today. Not perfect, but hopefully effective. Now I have my 5cm (2 inches) installation spacing. Occasionally the loops touch each other. May I ask what extra cost your general contractor charged for the wall heating?
And is it an interior or exterior wall? Is it in the shower?
I believe I paid an additional 500-600€ as a surcharge for moving from a standard general contractor (GC) setup to a design based on heat load calculation. Installation according to the calculation should have been cost-neutral for the GC, since during the sales discussions they always promised a 30°C lead temperature, only for me to find out that they had zero knowledge of the technology.
Officially, the extra cost was only for the wall heating system, which seems quite cheeky considering it involved just one roll of pipe, a few brackets, and about 2 hours of work. I think it was a mixed calculation. However, I didn’t want to argue over this; the result was more important to me than haggling over 500€.
A 200m (650 ft) roll doesn’t cost 170€.
Officially, the extra cost was only for the wall heating system, which seems quite cheeky considering it involved just one roll of pipe, a few brackets, and about 2 hours of work. I think it was a mixed calculation. However, I didn’t want to argue over this; the result was more important to me than haggling over 500€.
A 200m (650 ft) roll doesn’t cost 170€.
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RotorMotor30 Jun 2021 09:23Thanks for the information.
To me, it seems like general contractors and heating installers are reluctant to grind the wall.
What I’m still missing is a good reason against this measure.
Did yours mention anything?
Could tiles fall off the wall? Is it harder to bleed the system? Or is it simply not the usual practice?
To me, it seems like general contractors and heating installers are reluctant to grind the wall.
What I’m still missing is a good reason against this measure.
Did yours mention anything?
Could tiles fall off the wall? Is it harder to bleed the system? Or is it simply not the usual practice?
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