MRCOOL DIY 5th Gen 2-Zone Mini-Split System | Heat Two Rooms Independently, No Technician Required
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🛡 Warranty: Manufacturer warranty included. Coverage varies by product — see product description below for full warranty details.
Best for: Two-room cabins, additions, small homes, or shop-plus-office layouts that need separate zones.
Why people buy it: One condenser can serve multiple spaces without installing ductwork.
Watch out for: Multi-zone DIY planning is less forgiving. Confirm head sizing, line-set runs, condenser placement, and electrical before ordering.
A single-zone system heats one area. A 2-zone system lets you set a different temperature in the bedroom than in the living space, or control a cabin and an attached garage from one outdoor condenser. The MRCOOL DIY 5th Gen multi-zone platform brings the same pre-charged quick-connect installation that made the single-zone unit famous to multi-room setups. One outdoor unit, two independently controlled indoor air handlers, no HVAC contractor required at any point.
MRCOOL DIY 2-Zone System Key Features
- Two independent zones — each indoor air handler has its own thermostat and operates independently; set different temps in different rooms
- True DIY installation — pre-charged R-454B quick-connect line sets for each zone; no vacuum pump, no refrigerant certification
- Heats down to -13°F — full cold-climate heat pump performance across all zones
- 230V single condenser — one outdoor unit serves both zones; cleaner installation than two separate systems
- WiFi and app control — MRCOOL Smart HVAC app; control each zone independently from your phone
- Gold Fin condenser coil — corrosion-resistant; rated for outdoor exposure in all climates
- Energy Star certified select configurations — check your specific BTU combination for rebate eligibility
- Expandable to 6 zones — MRCOOL multi-zone condensers scale from 2 to 6 indoor units on the same platform
Specifications
| Zone Count | 2 zones |
| Voltage | 208-230V, 60Hz, 1PH |
| Refrigerant | R-454B (pre-charged line sets) |
| Min Operating Temp (Heating) | -13°F |
| Available Air Handler Sizes | 9K, 12K, 18K BTU (mixed combinations available) |
| Certifications | UL, ETL, AHRI |
| Warranty | 5 years parts / 7 years compressor |
What's Included
- 1x outdoor multi-zone condenser unit
- 2x indoor wall-mount air handlers (BTU sizes per selected configuration)
- 2x pre-charged quick-connect line sets (25 ft each)
- Smart HVAC Controller Modules (WiFi)
- Remote controls for each zone
- Installation hardware
Compatible Add-Ons
- Line set covers (hide exterior line runs)
- Replacement filters (reusable; recommended annual cleaning)
- Extended line sets (available up to 82 ft per zone)