Mitsubishi Outdoor Unit Modulation Range (and other specs)
I’m looking to install a 1:1 minisplit in a renovated walk-out basement that is primary living space in zone 4A with a design day temp of 17. Architect and HVAC contractor’s current thinking is a Mitzubishi MLZ slim ceiling cassette. I see the hyperheat outdoor unit for this is the SUZ-KA09NAHZ. I’m concerned because the specs for this unit show a very small modulation range. Rated heat capacity is 12,000 btu/h, and minimum capacity is 8,000 (the cooling minimum is oddly better at 4,800). The non hyper-heat version shows a minimum of 4,000 btu/h. The MSZ high-wall head MSZ-FS09NA & MUZ-FS09NAH combo shows much better turndown with a minimum capacity of 1,600. On the flip side, the MUZ has much lower moisture-removal capacity than the SUZ( .6 pints/h vs 1.8).
Should I be concerned about the very limited heat modulation range of the hyperheat SUZ? It seems like it would end up being grossly oversized much of the heating season.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part