This MRCOOL Olympus 4th Gen 3-zone system pairs a 48,000 BTU multi-zone heat pump condenser with three ceiling cassette indoor air handlers (18K + 18K + 18K BTU), delivering inverter-driven heating and cooling across three separate rooms from a single outdoor unit rated up to SEER2 24 and able to operate in outdoor temperatures as low as 5°F.
Highlights
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3-zone, 48,000 BTU condenser — one outdoor heat pump powers three independent ceiling cassette indoor units (18K + 18K + 18K BTU), for room-by-room comfort control.
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High-efficiency inverter operation — SEER2 ratings up to 24 and HSPF2-4 up to 10.6 help manage energy costs while maintaining reliable heating and cooling.
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Cold-climate capable — the condenser is rated to operate in outdoor temperatures as low as 5°F.
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Flexible smart controls — manage the system with the MRCOOL SmartHVAC app, the included remote(s), or hands-free voice commands via Amazon Alexa and Google Assistant.
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Built-in safeguards — sleep mode, auto restart, and refrigerant leak detection help keep the system running safely and efficiently.
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Environmentally friendly refrigerant — uses low-GWP R-454B refrigerant across the condenser and all indoor units.
Specs & Features
| Condenser Model |
MULTI6-48HP230C-O |
| Condenser Capacity |
48,000 BTU |
| Zones |
3-Zone |
| Indoor Air Handlers |
18K + 18K + 18K BTU (Ceiling Cassette) |
| Max SEER2 (system) |
24 |
| Max HSPF2-4 (system) |
10.6 |
| Min. Operating Temperature |
5°F |
| Refrigerant |
R-454B |
| Compressor Warranty |
7 years |
| Parts Warranty |
5 years (when registered and professionally installed) |
| Certification |
Energy Star Certified |
| Installation |
Professional installation required |
| 18K Ceiling Cassette Zone |
800 sq ft coverage, 48 dB indoor fan operation |
| 18K Ceiling Cassette Zone |
800 sq ft coverage, 48 dB indoor fan operation |
| 18K Ceiling Cassette Zone |
800 sq ft coverage, 48 dB indoor fan operation |
- Each indoor unit includes a handheld remote; ESTAR wall-mount zones also include Wi-Fi app control, and ducted zones include a wired wall controller.
- Indoor units are backed by a limited lifetime warranty in addition to the 7-year compressor / 5-year parts coverage.
Details
Avermont Direct is an authorized MRCOOL dealer, and this Olympus 4th Gen 3-zone system is backed by a 7-year compressor warranty and a 5-year parts warranty when registered and professionally installed. Built for larger homes or spaces that need independent climate control in three separate rooms, this 48,000 BTU condenser drives 3 ceiling cassette indoor units (18K + 18K + 18K BTU) with ductless, room-by-room comfort. As with all MRCOOL Olympus systems, installation by a licensed HVAC professional is required.
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
