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DIY 5th Gen Multi-Zone

The MRCOOL® DIY® 5th Generation Multi-Zone system lets you heat and cool multiple rooms from a single outdoor condenser — without requiring an HVAC license, vacuum pump, or professional installer. Each condenser supports 3 to 6 independent zones, all controlled separately via the SmartHVAC app, Amazon Alexa, or Google Assistant. R-454B refrigerant and Quick Connect® technology mean no vacuuming is required at installation.

Multi-Zone Condenser Comparison

Zones BTU SEER2 HSPF2-4 Max Coverage
3-Zone 18,000 23.9 10.0 Up to 750 sq. ft.
4-Zone 27,000 23.0 9.5 Up to 1,200 sq. ft.
5-Zone 36,000 23.0 9.9 Approx. 1,500 sq. ft.
6-Zone (48K) 48,000 21.8 10.0 Up to 2,000 sq. ft.
6-Zone (55K) 55,000 22.0 10.6 Up to 2,290 sq. ft.

What’s in This Collection

  • Multi-Zone Condensers — 3 through 6 zone outdoor units, all 230V R-454B
  • 230V Air Handlers — Wall mount indoor units from 6K to 36K BTU for pairing with any multi-zone condenser
  • R-454B Line Sets & Couplers — DIY Pro Cable line sets in 16ft to 50ft and No-Vac Quick Connect sets in 15ft to 50ft

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