This MRCOOL DIY 5th Generation 3-zone ductless mini-split system pairs a 48,000 BTU multi-zone condenser with three ceiling cassette air handlers (18K + 9K + 9K BTU), installed without hiring an HVAC professional thanks to the pre-charged DIY QuickConnect line set.
Highlights
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Three-zone coverage — one 48,000 BTU condenser powers three independent ceiling cassette air handlers (18K + 9K + 9K BTU), each zone controlled on its own schedule and temperature.
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No HVAC professional required — the patented, pre-charged Quick Connect line sets (filled with R-454B refrigerant) let you skip evacuating and charging the system yourself.
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DIYPro cable included — future-proofs the installation and eliminates the need for electrical conduit.
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Smart control options — manage the system with the included wireless remote, the SmartHVAC app (iOS and Android), or hands-free through Amazon Alexa and Google Home/Assistant.
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Follow Me tracking — each remote monitors the air temperature near you to help maintain consistent comfort in that zone.
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Low-profile ceiling installation — each air handler fits flush between 16” ceiling joists (including pre-manufactured I-joists) with no ductwork or wall space required, and the Elevation function lowers the filter panel for easy cleaning.
Specs & Features
| Condenser Capacity |
48,000 BTU (3-zone) |
| Zone Configuration |
18K + 9K + 9K BTU ceiling cassette air handlers (3 zones) |
| Max Combined Coverage (per condenser) |
Up to 2,000 sq. ft. / 6 zones supported |
| Efficiency |
21.8 SEER2, HSPF2-4 of 10 |
| Refrigerant |
R-454B (pre-charged DIY Quick Connect line set) |
| Installation |
DIY — no HVAC professional required |
| Included Cable |
DIYPro cable (no electrical conduit needed) |
| Controls |
Wireless remote (included per air handler), SmartHVAC app, Amazon Alexa, Google Assistant/Home |
| Certifications |
Intertek listed 5031495 |
| Parts Warranty |
5-year |
| Compressor Warranty |
7-year |
| Extended Warranty |
Limited Lifetime Replacement warranty available with MRCOOL Care Program subscription |
| 18K BTU Air Handler Coverage |
Up to 800 sq. ft. (Ceiling Cassette) |
| 9K BTU Air Handler Coverage |
Up to 400 sq. ft. (Ceiling Cassette) |
- Each air handler ships with its own wireless remote, included with the unit.
- Dry Mode reduces excess indoor humidity in each zone.
Details
Avermont Direct is an authorized MRCOOL dealer. This 3-zone DIY system carries MRCOOL's 5-year parts and 7-year compressor warranty on the condenser, with a Limited Lifetime Replacement warranty available through the MRCOOL Care Program. It suits a home or workspace needing independent temperature control across three separate rooms — for example, an 18K + 9K + 9K BTU combination sized to rooms of differing size — without the cost or wait of a professional HVAC installation.
Need Help?
If you have questions about this product before you order, our team is happy to help.
Email: support@avermontdirect.com
Phone: +1 (844) 455-3695
Hours: Monday–Friday, 9AM–5PM
Live Chat: Available 24/7
