Hello,
I wanted to ask you all, we are facing very hot days again.
How can you cool the house down a bit without using an air conditioner or reduce the sensation of heat?
We can’t simply install an air conditioner because we have a KfW 55 standard and are not allowed to make any changes for the first 10 years, or we would need to hire an energy consultant to recalculate everything.
We shade all the windows during such heat, but we can’t keep all the windows closed. The dog also needs to be able to go into the garden.
What would you recommend?
Should we use regular fans? Tower fans or pedestal fans?
What do you think about fans with humidifiers? Wouldn’t they just increase the indoor humidity unnecessarily?
Are there fans or devices that can actively cool the air, or small air conditioners that don’t require fresh air intake, an outdoor unit, or a vent hose leading outside?
On very hot days above 30°C (86°F), we have about 25–26°C (77–79°F) inside as the highest temperature.
I wanted to ask you all, we are facing very hot days again.
How can you cool the house down a bit without using an air conditioner or reduce the sensation of heat?
We can’t simply install an air conditioner because we have a KfW 55 standard and are not allowed to make any changes for the first 10 years, or we would need to hire an energy consultant to recalculate everything.
We shade all the windows during such heat, but we can’t keep all the windows closed. The dog also needs to be able to go into the garden.
What would you recommend?
Should we use regular fans? Tower fans or pedestal fans?
What do you think about fans with humidifiers? Wouldn’t they just increase the indoor humidity unnecessarily?
Are there fans or devices that can actively cool the air, or small air conditioners that don’t require fresh air intake, an outdoor unit, or a vent hose leading outside?
On very hot days above 30°C (86°F), we have about 25–26°C (77–79°F) inside as the highest temperature.
N
nordanney30 Jun 2025 12:38FrankChief schrieb:
What would you recommend to us?A portable air conditioner. Everything else is just minor details.
Hello,
Is it possible to receive subsidies for air-to-air heat pumps = air conditioners again? Two years ago, I looked into this and was told that air conditioners had been removed from the list of eligible subsidies. Has this changed now?
Best regards,
Andreas
tomtom79 schrieb:
Why shouldn’t a split air conditioner work? They are even subsidized.
Is it possible to receive subsidies for air-to-air heat pumps = air conditioners again? Two years ago, I looked into this and was told that air conditioners had been removed from the list of eligible subsidies. Has this changed now?
Best regards,
Andreas
N
nordanney30 Jun 2025 13:10They are now referred to as electrically operated heat pumps (explicitly air-to-air heat pumps in the Building Energy Act).
We sold our portable air conditioner. At night, we use a Dyson in the bedroom. It works perfectly.
The bedroom is kept dark during the day. Living areas have roller shutters during the day but still receive natural light through additional windows on the north and east sides.
The bedroom is kept dark during the day. Living areas have roller shutters during the day but still receive natural light through additional windows on the north and east sides.
Hello,
Yes, but that refers to replacing the heating system.
My question was different:
"Is there now again a subsidy program for installing a split air conditioning system (with cooling and heating function) WITHOUT replacing the existing heating system? Just as an addition to the current heating?"
Best regards,
Andreas
nordanney schrieb:
It is now referred to (also explicitly in the Building Energy Act as air-to-air heat pump) as electrically operated heat pumps.
Yes, but that refers to replacing the heating system.
My question was different:
"Is there now again a subsidy program for installing a split air conditioning system (with cooling and heating function) WITHOUT replacing the existing heating system? Just as an addition to the current heating?"
Best regards,
Andreas
Close the blinds and open all windows around 4 a.m. At least here, by 5 a.m. or latest 5:30 a.m., the outside temperature equals the inside temperature. Not sure if this works for you. It didn’t work in the new kindergarten building; I tried it last week and took an early walk.
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