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The MRCOOL DIY 5th Gen 3-Zone is a ductless mini-split system built around an 18,000 BTU condenser and up to three ceiling cassette air handlers in 6K, 9K or 12K BTU sizes. Ceiling cassettes sit flush and free up wall space, which sets it apart from the usual wall-mounted heads. The quick-connect lines and pre-charged refrigerant let a handy homeowner do the install without a vacuum pump or brazing torch, though most rivals still expect a licensed tech. Efficiency reaches SEER2 22.3, and each zone runs on its own schedule through the SmartHVAC app or Alexa and Google Assistant. Owners rate it highly for quiet, even output and a fast, clean install.
Availability unknown
Lowest price we've seen: $6,484.00 on Oct 31 at Chill Mini Splits. Tracked across 1 store since Oct 31.
Owners rate the system 4.9 out of 5 and mostly talk about how quick the DIY install went and how quiet the cassettes run. The ceiling cassettes are called discreet and effective. The recurring complaint is a WiFi dongle that did not work on one unit.
The MRCOOL DIY 5th Gen 3-Zone is a ductless mini split system with an 18,000 BTU condenser. It supports up to three ceiling cassette air handlers in any combination of 6K, 9K, or 12K BTU sizes. It heats and cools.
The ceiling cassettes have a low-profile design and mount flush with the ceiling, which keeps wall space free. The system uses MRCOOL's DIY installation technology with quick-connect lines. Setup does not require special tools, training, or professional labor.
Each zone operates independently. You can control zones from a smartphone with the MRCOOL SmartHVAC app, or by voice with Amazon Alexa and Google Assistant. Each cassette also comes with a remote.
