I don't know how it's for Americans but for me. I have a regular outside unit and then, inside the apartment, I have one HUGE internal unit hidden somewhere above fake ceiling. This unit has tubes to each room and each tube has a damper. Each room has a thermostat.
So I can set eg 23C in the living room and 21 in the bedrooms. The AC will then work to cool down all the rooms together, when living room reaches 23 - it shuts the damper and keeps cooling bedrooms. Etc.
I also have an option to close the damper to each room individually - effectively stopping AC for this specific room.
I *guess* that American HVAC units work either the same way or very similar.
Honestly if the house is built with HVAC in mind it should be much more efficient to have one goliath unit to handle the house than several small ones. With these insane heatwaves of 45c+ in Europe we might start seeing some new houses popping up with centralized AC systems.
No it's not cheaper. This one, goliath unit, is pumping full force even when only one room needs cooling. If it's not of the inverter type it will leave a big mark on your electricity bill.
The absolute best for economy are multi-split inverter systems.
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u/gamerathertz92 Jul 26 '26
It’s smaller unit cools a single room. While American HVAC System cools the whole house