This MRCOOL® DIY® 5th Generation 3-zone ductless mini-split pairs a 55,000 BTU outdoor condenser with three ceiling cassette indoor air handlers sized 12K + 12K + 9K BTU, rated for do-it-yourself installation with no HVAC professional required. The condenser is rated to heat and cool up to 6 separate zones totaling up to 2,290 sq. ft., achieving 22 SEER2 and an HSPF2-4 of 10.6.
Highlights
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No HVAC professional required – the pre-charged 25-foot DIY® QuickConnect® line set arrives filled with R-454B refrigerant, so there's no evacuating or charging to do on site.
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Three-zone flexibility – the 55,000 BTU condenser powers this 12K + 12K + 9K BTU ceiling cassette combination, letting each room be heated or cooled independently.
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Efficient, eco-friendly operation – rated up to 22 SEER2 and an HSPF2-4 of 10.6 using R-454B refrigerant.
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Smart control options – operate the system with the included wireless remote, the SmartHVAC app (Apple and Android), or voice commands through Amazon Alexa and Google Assistant.
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Low-profile ceiling cassette design – each air handler fits flush between 16" ceiling joists, including pre-manufactured I-joists, with no exposed wall unit.
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Easy-access filter maintenance – the Elevation function lowers the filter panel for simple cleaning, and advanced filtration helps improve indoor air quality.
Specs & Features
| Condenser Capacity |
55,000 BTU |
| Zone Configuration |
3-Zone: 12K + 12K + 9K BTU Ceiling Cassette air handlers |
| Total Rated Coverage (condenser) |
Up to 2,290 sq. ft. |
| Efficiency |
Up to 22 SEER2 / HSPF2-4 of 10.6 |
| Refrigerant |
R-454B (pre-charged 25-ft. DIY® QuickConnect® line set) |
| Installation Type |
DIY – no HVAC professional required |
| Control Options |
Wireless remote, SmartHVAC app (Apple/Android), Amazon Alexa, Google Assistant |
| Certification |
Intertek listed 5031495 |
| Parts Warranty |
5-Year |
| Compressor Warranty |
7-Year |
| Extended Warranty |
Limited Lifetime Replacement warranty available with enrollment in the MRCOOL® Care Program |
| Zone 1 Air Handler |
12K BTU Ceiling Cassette – up to 550 sq. ft. |
| Zone 2 Air Handler |
12K BTU Ceiling Cassette – up to 550 sq. ft. |
| Zone 3 Air Handler |
9K BTU Ceiling Cassette – up to 400 sq. ft. |
- Two-stage DC motor for quiet operation
- Swing technology for even airflow distribution
- Compatible with both multi-zone and single-zone systems
Details
Avermont Direct is an authorized MRCOOL dealer. This 3-zone 55,000 BTU DIY® system is backed by a 5-year parts warranty and a 7-year compressor warranty, with a Limited Lifetime Replacement warranty available to customers who enroll in the MRCOOL® Care Program. It suits homeowners who want to heat and cool up to three rooms independently – such as bedrooms, a living area, or an addition – without scheduling a professional HVAC install.
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
