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
derkobi schrieb:
We still really don’t know what to do about the decentralized ventilation.
On April 22 (Easter Monday), we want to finalize it with Town & Country. I’m not sure yet if we can still make changes.Hello, how did you finally decide?
We ourselves are facing the question – mainly for financial reasons – whether to choose a central or decentralized ventilation system for the bungalow.
Excerpt from the offer:
Costs for your requested heating system, the air-to-water heat pump recoCOMPACT exclusive, including the necessary accessories (materials) for installation and labor, are (costs 16,870 euros).
Our standard air-to-water heat pump (including 4x Lunos e2), according to the offer you received, had an additional cost of 4,150 euros.
So at least in my preferred example, there would be an additional cost of about 13,000 euros for the desired setup. Otherwise, additional costs of around 8,000–9,000 euros are expected for a mechanical ventilation with heat recovery system. Friends installed a central mechanical ventilation system [Vaillant recoVair] for about 7,500 (self-installation) themselves.
Mycraft schrieb:
Decentralized ventilation is better than none, and centralized ventilation is better than decentralized. That basically sums it up. Better in what way? Efficiency of heat recovery, noise level, cost, comfort, maintenance, durability?
And since this forum often likes to do cost-benefit comparisons, even if the efficiency of decentralized versus centralized systems might be lower, the question is whether the additional cost of a centralized system pays off against heat loss plus reheating in a decentralized system (due to potentially lower efficiency).
To those building with Town & Country, which type of ventilation system did you ultimately choose?
Better in almost every respect. The central controlled ventilation system only loses out to decentralized solutions in terms of initial purchase cost.
However, this gap narrows significantly when all costs are taken into account. With proper planning and under the same conditions, you typically need far more than the four decentralized units that Town & Country considers the minimum equipment.
After all, this only ensures the minimum ventilation.
However, this gap narrows significantly when all costs are taken into account. With proper planning and under the same conditions, you typically need far more than the four decentralized units that Town & Country considers the minimum equipment.
After all, this only ensures the minimum ventilation.
Mycraft schrieb:
You need far more than the 4 decentralized units that Town & Country lists as the minimum equipment, for example. How do you come up with 4 units? We receive (as I said, at no extra cost since it’s standard) more than 4 (I think 7 or 8)...assuming you mean the "ventilation points" in the wall...or do you mean something else?
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