Maintenance for ducted minisplit heads
Designing a new house in Southern Ontario (Zone 6a).
We’re thinking through HVAC design for the home, and we’re inclined towards a multi-split system to provide for both heating and cooling.
We’re considering the Mitsubishi “Zuba” (which I think is just the HyperHeat branding in Canada) system multi-split system, with low- or medium-static in-ceiling ducted units with ducts to the rooms.
We want to achieve some zoning, and want to split the upstairs (~2000 sq. ft) into a minimum of two zones (North-facing bedrooms in one zone, south-facing bedrooms in another zone). Right now the thinking is that we have one in-ceiling unit for each side. We’ll also be adding zones to the lower level so likely multiple medium-static heads downstairs also.
I’ve read about the maintenance demands of the wall-mounted minisplit heads which seem quite intense due to build up of dirt and mold (!) — but tearing down and cleaning the fan coils every 6 months sounds exactly like something I’ll never end up doing.
What are the maintenance demands like for these in-ceiling units? Are they the same or different than the wall-mounted heads?
I don’t mind changing filters every few months. But tearing apart and cleaning fan coils is a serious turn-off and would push me towards using a larger single centralized air-handler system. At least then i only have to perform maintenance on one indoor unit instead of 4-5.
In terms of my priorities, I would rank them as (1) comfort (2) ease of maintenance (3) efficiency.
Any thoughts or lived experience would be helpful!
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