ᐅ Building a House with TuC and Modifications – Your Thoughts?
Created on: 11 Apr 2019 21:52
D
derkobi
Hello construction experts and enthusiasts, I have been reading along for a while and now I need some advice.
We want to build with TuC here in Saxony, postal code area 02.
The companies that build for TuC here have a good reputation and there is a lot of building activity at the moment.
Most people simply build an affordable house, called Standard eco Baustein 1. Unfortunately, posting links is not allowed. We want to make a few small changes if they make sense.
We would like to increase the exterior wall thickness from 24cm (9.5 inches) to 36.5cm (14 inches), using aerated concrete from Porit in monolithic construction.
The additional cost is about 7,300€ (the foundation slab will also be larger to maintain the living space). The rest will be adjusted to the stronger walls – roof, windowsills, etc.
If worthwhile, we would replace the gas condensing boiler with an air-to-water heat pump (Vaillant aroTherm Split vwl 75/5) with Unitower vwl 78/5 IS.
Additional cost: 6,000€.
Underfloor heating throughout the house.
The house model is Flair 125, where 125 stands for the square meters.
One and a half stories.
What are your thoughts on this?
Kind regards,
Kobi
We want to build with TuC here in Saxony, postal code area 02.
The companies that build for TuC here have a good reputation and there is a lot of building activity at the moment.
Most people simply build an affordable house, called Standard eco Baustein 1. Unfortunately, posting links is not allowed. We want to make a few small changes if they make sense.
We would like to increase the exterior wall thickness from 24cm (9.5 inches) to 36.5cm (14 inches), using aerated concrete from Porit in monolithic construction.
The additional cost is about 7,300€ (the foundation slab will also be larger to maintain the living space). The rest will be adjusted to the stronger walls – roof, windowsills, etc.
If worthwhile, we would replace the gas condensing boiler with an air-to-water heat pump (Vaillant aroTherm Split vwl 75/5) with Unitower vwl 78/5 IS.
Additional cost: 6,000€.
Underfloor heating throughout the house.
The house model is Flair 125, where 125 stands for the square meters.
One and a half stories.
What are your thoughts on this?
Kind regards,
Kobi
Hey, we will also build a standard house, but the walls will be 36.5 cm (14 inches) thick.
We will probably not install ventilation systems, neither decentralized nor centralized, except in the bathroom where we want to have something installed.
We have an appointment next Friday to discuss the floor plans and clarify a few questions.
The heat pump upgrade would cost us 6000€ (Euros) (approx. $6,500). (Vaillant)
Why do you want the Reco Compact for so much more money? What advantages does it offer?
We will probably not install ventilation systems, neither decentralized nor centralized, except in the bathroom where we want to have something installed.
We have an appointment next Friday to discuss the floor plans and clarify a few questions.
The heat pump upgrade would cost us 6000€ (Euros) (approx. $6,500). (Vaillant)
Why do you want the Reco Compact for so much more money? What advantages does it offer?
H
hemali200314 Jul 2019 18:15boxandroof schrieb:
At the latest when you need to replace these devices, the centralized solution is at least financially equivalent.I don’t understand that. Why would you have to replace them? A central system can break down just as well.We have 11 units in 146 sq m (1,571 sq ft), one per room, and three in the large living/dining area.
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boxandroof14 Jul 2019 20:09A central unit is easier and more cost-effective to replace, and the manufacturer does not matter.
derkobi schrieb:
The additional cost for the heat pump with us would be 6000€ (Vaillant).
Why do you want the RecoCompact for so much more money? What advantages do you see there?
The RecoCompact already includes controlled residential ventilation with heat recovery (so you can subtract about 8000 EUR from the total price—this comparison price is from acquaintances in the area—meaning the additional cost is effectively only about 8000 EUR, which is 2000 EUR more than your option, solely for an air-to-water heat pump).
The RecoCompact is SG Ready and photovoltaic ready (which earns bonus points for the BAFA funding) for future upgrades.
Regarding indoor installation, I expect better efficiency in winter since it doesn’t use the -20 degrees Celsius (−4°F) cold air like the Arotherm but instead first uses the air cooled down by the controlled residential ventilation/heat recovery system.
See also: https://www.hausbau-forum.de/threads/Energieeinsparverordnung 2016-oder-kfw-55-für-Bungalow-mit-lwwp-kwl-optional-pv.31269/
Additionally, we prefer indoor installation over a split system with the outdoor unit.
H
hemali200315 Jul 2019 00:05boxandroof schrieb:
Central units are easier and cheaper to replace, and the manufacturer doesn’t really matter. Assuming that all devices need to be replaced... With decentralized units, technically you actually spread the risk of failure. Not statistically, but if it happens and the system fails earlier than expected—the chance that all decentralized fans break down prematurely is quite low. Maybe one or two at most.
Noise is definitely a disadvantage with decentralized units, that’s just how it is. But aside from that, I somehow find decentralized systems more appealing.
Although, I don’t really have much knowledge on this.
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