u/shadowingelite

live in a rather humid country which has summer year round and windows are constantly open. dont use air con that much. what would be a good purifier for a room only (perhaps about 12m^2?). budget would be mid-range maybe 200-300USD or cheaper if possible. hopefully maintenance is low too (less than 50usd a year) is it fine if the rest of the house does not have a purifier? do i need to keep my door closed? if not should i buy a purifier for the rest of the apartment too?

thank you!! sorry brand new to this purifier stuff hope to gain some knowledge.