ᐅ Retrofitting an air conditioning system – will that affect KfW funding?
Created on: 10 Jun 2021 21:02
H
Helado
Good evening everyone,
Since October, we have been living in a prefabricated house built by Hanse Haus. We have been living here for about 5 months now and are very pleased.
However, at the moment, the indoor temperature in each room is between 26°C and 28°C (79°F and 82°F), even though it is similarly warm outside. The only way we can lower the temperature is by opening the windows at night.
We have a KFW55 standard and a Stiebel Eltron LWZ 5s Plus. Unfortunately, it does not have an active cooling function, but we have installed and activated the summer cassette in the menu settings. So far, this has not produced the desired result. The temperature remains the same.
We are now considering adding air conditioning, but we have been clearly advised that this might mean no longer meeting the KFW energy-saving regulation standards, and therefore, it might affect the eligibility for subsidies. Fortunately, it is not very hot outside at the moment, but when it reaches 35°C (95°F) outdoors, the temperature inside the house can easily rise to around 30°C (86°F), which is not exactly comfortable.
Does anyone have advice or experience with retrofitting air conditioning (in specific rooms) or with the same heating system?
Thanks & best regards
Helado
Since October, we have been living in a prefabricated house built by Hanse Haus. We have been living here for about 5 months now and are very pleased.
However, at the moment, the indoor temperature in each room is between 26°C and 28°C (79°F and 82°F), even though it is similarly warm outside. The only way we can lower the temperature is by opening the windows at night.
We have a KFW55 standard and a Stiebel Eltron LWZ 5s Plus. Unfortunately, it does not have an active cooling function, but we have installed and activated the summer cassette in the menu settings. So far, this has not produced the desired result. The temperature remains the same.
We are now considering adding air conditioning, but we have been clearly advised that this might mean no longer meeting the KFW energy-saving regulation standards, and therefore, it might affect the eligibility for subsidies. Fortunately, it is not very hot outside at the moment, but when it reaches 35°C (95°F) outdoors, the temperature inside the house can easily rise to around 30°C (86°F), which is not exactly comfortable.
Does anyone have advice or experience with retrofitting air conditioning (in specific rooms) or with the same heating system?
Thanks & best regards
Helado
Mycraft schrieb:
Take advantage of the opportunity. Reflect once more and consider everything objectively. If necessary, consult a physics book and please set aside any prejudices. Air conditioning systems would be evil and the ultimate climate destroyer. I have no prejudice against the systems 😉 but I was actually hoping to manage well without one.
I will reconsider and, if necessary, obtain quotes soon 🙂
Deliverer schrieb:
So far, I have only done retrofitting, unfortunately. The rule of thumb is about 1,000 euros per kilowatt of cooling capacity. So a 2.5 kW unit from a reputable manufacturer (Mitsubishi Electric, Daikin, etc.) should cost less than 3,000 euros all inclusive.
Especially in a well-insulated new build, you should pay attention to the lower performance limit (just like with a heat pump for heating). If you are willing to operate the air conditioning as reasonably as the heating (turn it on and keep it running) and you don’t aim for 18°C (64°F) as the target temperature, you don’t need 5 kW. Between 2.5 and 3.5 kW will definitely be sufficient. Many thanks! Does anyone possibly have an idea of the typical subsidy amounts?
D
Deliverer23 Jun 2021 14:38netuser schrieb:
Thank you very much!
Does anyone perhaps have an idea of the typical subsidy amounts? 35%. However, I haven’t checked yet if this also applies to new builds. In case of doubt, you can just prepare in advance...
The discussion is here: Edit: There are no links allowed here. The topic is being discussed in the photovoltaic forum. The thread is called: "Stay cool during the summer and get heating support if it makes sense! BAFA grants of at least 35% for air conditioning systems!"
Deliverer schrieb:
35%. However, I haven’t checked yet if this also applies to new buildings. In an emergency, you would just prepare for it...
This is being discussed here: Edith: There are no links here. It is discussed in the photovoltaic forum. The thread is titled: "Stay cool through the summer and support heating when it makes sense! Bafa subsidies of at least 35% for air conditioning systems!"OK, thanks a lot!
This completely passed me by until I came across this thread. I’ll look around more in the forum; we’re planning to install a photovoltaic system anyway...
R
Reltaw202123 Jun 2021 16:20So far, I have mainly seen institutional installers listed as beneficiaries on the Bafa website.
If it is also available for private individuals, the subsidy is likely around 20%, as that was always the maximum percentage where I saw it.
Better than nothing, and given the current political trends, one should be glad not to be PENALIZED for installing an air conditioning system.
However, the requirement is that it must be a specific type of AC system regarding the refrigerant used.
If it is also available for private individuals, the subsidy is likely around 20%, as that was always the maximum percentage where I saw it.
Better than nothing, and given the current political trends, one should be glad not to be PENALIZED for installing an air conditioning system.
However, the requirement is that it must be a specific type of AC system regarding the refrigerant used.