ᐅ Is it possible to install air conditioning as an upgrade if a mechanical ventilation system with heat recovery is already installed?
Created on: 8 Aug 2021 07:32
M
McEgg
Hello,
we live in a KfW55 house with a controlled mechanical ventilation system. Since it gets too warm for me in the summer, I would now like to add air conditioning units.
I am planning a total of four units: in the three bedrooms upstairs and in the open living, dining, and kitchen area on the ground floor.
I have looked at units from Gree and would choose 2.7 kW units for the upstairs rooms and a 5.3 kW unit for the ground floor, based on the room sizes.
Now to the main question:
Does it make sense to install air conditioning if we already have a controlled mechanical ventilation system? Do the air conditioning units generally need to be sized larger because the ventilation system removes the cool air too quickly? Or does the controlled mechanical ventilation system prevent the rooms from cooling down effectively in the first place?
we live in a KfW55 house with a controlled mechanical ventilation system. Since it gets too warm for me in the summer, I would now like to add air conditioning units.
I am planning a total of four units: in the three bedrooms upstairs and in the open living, dining, and kitchen area on the ground floor.
I have looked at units from Gree and would choose 2.7 kW units for the upstairs rooms and a 5.3 kW unit for the ground floor, based on the room sizes.
Now to the main question:
Does it make sense to install air conditioning if we already have a controlled mechanical ventilation system? Do the air conditioning units generally need to be sized larger because the ventilation system removes the cool air too quickly? Or does the controlled mechanical ventilation system prevent the rooms from cooling down effectively in the first place?
K1300S schrieb:
No big difference???Please read carefully! ;-)
If I remember correctly, the reduction factor of a window with external shading is 0.15.
hampshire schrieb:
How unreasonable are our building regulations for energy saving when they focus almost entirely on heat loss during the cold months and barely address heat gain in the warmer seasons? The energy saved in winter is then used in summer for additional air conditioning since the houses can no longer be cooled effectively once the heat is inside. Isn’t there a smarter way to approach this starting from the regulations themselves?At least in summer, the electricity from the photovoltaic system can be used for the air conditioning, but in winter, the photovoltaic system doesn’t provide anything for the heat pump.K1300S schrieb:
How is that supposed to work? An air conditioner only cools the air already inside the house, while a ventilation system exchanges indoor air with outdoor air. Those are two completely different things. Okay, but how can an air conditioner then dehumidify the indoor air?
Similar topics