ᐅ Costs for a Central Air Conditioning System in New Construction
Created on: 27 Jul 2021 15:56
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silentser
Hello everyone,
Has anyone had experience with installing a central air conditioning system?
I am planning to install a central air conditioning system for 5 rooms in a new build: 4 units on the upper floor (one per room – 72 m² (775 sq ft)) and one on the ground floor (living room with an open-plan kitchen – also 72 m² (775 sq ft)). The construction company estimated the costs at 30,000 to 35,000 EUR.
My question is whether this amount is reasonable. The construction company I am working with is not the cheapest, but 35,000 EUR still sounds quite expensive.
Has anyone had experience with installing a central air conditioning system?
I am planning to install a central air conditioning system for 5 rooms in a new build: 4 units on the upper floor (one per room – 72 m² (775 sq ft)) and one on the ground floor (living room with an open-plan kitchen – also 72 m² (775 sq ft)). The construction company estimated the costs at 30,000 to 35,000 EUR.
My question is whether this amount is reasonable. The construction company I am working with is not the cheapest, but 35,000 EUR still sounds quite expensive.
driver55 schrieb:
In a properly designed new build, there should be sufficient thermal and solar protection, so that air conditioning is not necessary.Yes, but there are more than a dozen "buts." Since the energy-saving regulations and various KfW efficiency levels came into effect, interior temperatures in houses during summer have not improved. In winter, yes, everything is great. Modern construction methods save a lot of primary energy. So, the political goal has been achieved. However, the effect is also noticeable in summer, and after a few days, even the best shading no longer helps. Especially when tropical nights occur...driver55 schrieb:
The location is Germany, not Spain, Italy, etc., right?Yes, for that reason, air conditioning in Germany does not run continuously for 3–4 months like in Southern Europe, but only for a few weeks or sporadically during the peak of summer.driver55 schrieb:
Air conditioning also has (high) running costs.That used to be the case. Start/stop systems are usually no longer installed. Rumor has it that half the forum heats their homes using these units in reverse mode, enjoying pleasantly low operating costs.An additional 200 euros per year for active cooling is something one can probably afford, I think.
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Traumfaenger29 Jul 2021 17:01driver55 schrieb:
With a properly planned new build, there should be sufficient thermal and solar protection so that air conditioning is not necessary.
For example, venetian blinds, roof and facade insulation, roof overhangs, etc. Well, enjoy living in a KfW 40 house with top ratings in the blower door test.... During extended heatwaves, opening doors, ventilation, and so on will lead to heat gain. And if, as mentioned above, the house can no longer cool down at night, then you will be dealing with the limitations of the KfW 40 standard for a long time.
untergasse4329 Jul 2021 20:00... and if you have a nice timber frame house, even with the best shading, it will only lag behind the outside temperature by 3-4 days. Have fun with that.
Cooling can only be achieved through thermal mass or cooled air. With today’s cardboard-style houses, only the latter option remains.
Cooling can only be achieved through thermal mass or cooled air. With today’s cardboard-style houses, only the latter option remains.
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silentser6 Aug 2021 16:31I have been trying to learn more about central air conditioning and found surprisingly little information online about how exactly it works and what types of equipment are used.
If I understand correctly, you need appropriate piping throughout the house and a refrigeration unit. Are there specific examples of such equipment? I find a lot of information about split and multi-split systems online, but hardly anything about central units.
If I am correct, the refrigeration unit can be installed in the basement. How is the heat then removed?
And how do central air conditioning systems and mechanical ventilation with heat recovery work together? Are the ducts for the mechanical ventilation and the air conditioning installed separately, so that the two systems operate independently?
If I understand correctly, you need appropriate piping throughout the house and a refrigeration unit. Are there specific examples of such equipment? I find a lot of information about split and multi-split systems online, but hardly anything about central units.
If I am correct, the refrigeration unit can be installed in the basement. How is the heat then removed?
And how do central air conditioning systems and mechanical ventilation with heat recovery work together? Are the ducts for the mechanical ventilation and the air conditioning installed separately, so that the two systems operate independently?
silentser schrieb:
surprisingly little information Because this is mostly found in commercial buildings, and not just anyone has experience with it.
silentser schrieb:
How is the heat removed then? Via evaporators in the ducts.
silentser schrieb:
How do central air conditioning systems and controlled ventilation units work together? In residential construction, basically not at all. As you noticed, both systems are installed side by side and operate independently; at most, some form of integration takes place at a very high level.
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