This MRCOOL DIY 5th Gen 3-Zone system pairs a 55,000 BTU multi-zone outdoor condenser with three wall-mount indoor air handlers (18K + 18K + 18K BTU), and installs without an HVAC professional thanks to pre-charged Quick-Connect line sets that skip the evacuation and vacuuming steps.
Highlights
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No HVAC pro required — pre-charged DIY QuickConnect® line sets (R-454B refrigerant) let you skip evacuation and charging during install.
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Whole-home zoning — one 55,000 BTU condenser powers up to 6 indoor zones (this system uses 3: 18K + 18K + 18K BTU) covering up to 2,290 sq. ft. combined.
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Efficient by design — SEER2 up to 22 and HSPF2-4 up to 10.6 help keep operating costs down.
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Smart control — included wireless remotes plus the Smart HVAC app (Apple/Android) and Amazon Alexa/Google Assistant voice control.
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DIYPro® cable included — removes the need for electrical conduit and adds durability against outdoor elements.
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Follow Me® function — each wall-mount air handler's remote tracks nearby temperature for more even comfort, plus Dry Mode for humidity control.
Specs & Features
| Condenser Capacity |
55,000 BTU (multi-zone, supports up to 6 indoor zones) |
| Zones in This System |
3 (18K + 18K + 18K BTU, Wall Mount) |
| Combined Coverage (this system) |
Up to 2,400 sq. ft. |
| Max System Coverage (condenser rating) |
Up to 2,290 sq. ft. (up to 6 zones) |
| SEER2 |
Up to 22 |
| HSPF2-4 |
Up to 10.6 |
| Refrigerant |
R-454B (pre-charged Quick-Connect® line set) |
| Parts Warranty |
5 years |
| Compressor Warranty |
7 years |
| Extended Warranty |
Limited Lifetime Replacement available with MRCOOL Care Program enrollment |
| Certification |
Intertek listed 5031495 |
| Zone – 18,000 BTU Wall Mount |
Coverage up to 800 sq. ft. |
| Zone – 18,000 BTU Wall Mount |
Coverage up to 800 sq. ft. |
| Zone – 18,000 BTU Wall Mount |
Coverage up to 800 sq. ft. |
- DIY installation — no HVAC professional or electrical conduit required (DIYPro® cable included).
- Gold Fin® condenser coil on each air handler resists corrosion, a plus in coastal or humid climates.
Details
Avermont Direct is an authorized MRCOOL dealer, and this 3-zone system is backed by MRCOOL's 5-year parts and 7-year compressor warranty, with a Limited Lifetime Replacement warranty available once you enroll in the MRCOOL Care Program. It's a good fit for homeowners who want to condition three separate rooms or zones — totaling up to 2,400 sq. ft. with this 18K + 18K + 18K BTU wall-mount configuration — from a single outdoor condenser, without hiring an HVAC contractor for 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
