Here in Vietnam nearly all ACs are these minisplit type. It costs about 500,000VND ($19) to get one serviced, including replacement coolant. It's cheap enough that I get it done at least once or twice a year for all units (the coolant doesn't always need replacing but I get it cleaned and serviced).
I know the US and Vietnamese economies are very different, but something doesn't add up there.
I know the US and Vietnamese economies are very different, but something doesn't add up there.