has anyone looked into Mr. Cool DIY systems. I've been reading and YouTubing, but results seem mixed. I might be able to gear myself up for the simplest installation which would be our MBR. first floor, the outdoor unit would be directly below the indoor, 120v nearby. $2,000. for materials vs $7,000. pro istall, but I would have no service.
These mentioned ductless issues are not unique to minisplit heat pumps, but common to all types of un-ducted, zoned HVAC systems. My home was built with zoned electric resistance heat, no cooling, no ducts, a very common type in this region. The "poor conditioning in adjacent spaces" issue is more a winter than summer issue here. My building envelope upgrades have helped considerably, new code-compliant construction should be better still. Only very recently did AC adoption climb above 50% of housing units in some Western Washington counties, while others still remain slightly below 50%. Census Bureau Releases New Local Estimates of Air Conditioning Access https://www.seattletimes.com/seattle-news/data/king-countys-cooling-divide-new-data-maps-our-ac-haves-and-have-nots/ I can't speak to dehumidification issues as I've never lived in a climate zone needing more than simple exhaust fans (ideally on programmable timers) next to water sources, such as bathrooms and laundry. Inland from here for probably over a thousand miles eastwards, they have the opposite problem of natural humidity being lower than desirable.
