Looking to keep three rooms comfortable without shelling out for a full HVAC...

https://cleaningservicesgrandrapidsmi.com/what-btu-mix-should-i-use-for-3-rooms-like-9k-12k-6k/

Looking to keep three rooms comfortable without shelling out for a full HVAC overhaul? A 3-zone DIY mini split is a solid choice. With a heating rating down to -13°F and an efficient SEER2 rating around 24, it handles cold winters while saving energy