Natural Cooling / NC-Box Experiences

Where at which place? The indoor thermometer is placed inside on a small table against an exterior wall

Then measure the other rooms first. Depending on the location, there is usually a difference of a few degrees.

We have a 54m² large living and dining area that extends over half the house with 3m wide windows and they are all oriented South/East and South/West, so the sun shines on them all day. That is where we spend most of our time, the bedroom on the upper floor has the same temperature.

So I can now explain more precisely how cooling works for us. We have a city villa with 150m² that is fully exposed to the sun and faces south, south/west, with 3 large windows each 3.3m wide. We have 36.5cm thick Ytong walls without additional insulation. We keep the roller shutters down all day where the sun is shining and the windows and doors closed. The cooling system was put into operation 3 weeks ago and for 2 weeks now we have had daily temperatures above 30° outside.

Inside the house, throughout the entire ground floor, the temperature is between 24.5 to 25.2 ° and in the evening it always gets a bit warmer. Upstairs we have a Ytong ceiling and an uninsulated cold roof. Here the temperature is between 24.5 and 26.5 and it already gets warmer in the evening. The temperatures remain relatively stable, cooling down at night to the low value I mentioned and rising during the day to the highest value stated.

The neighbors around us, who also built with Ytong but have a pitched roof, have about 27 degrees on the ground floor and rather 28 to 29 degrees upstairs.

So I would initially say that the cooling does bring a little bit of effect.

Exactly what is promised. A few degrees of cooling with low operating costs. However, the shading also plays a major role in the result. Without it, the effect would be somewhat less.