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HVAC Zoning

MRCOOL DIY Multi-Zone Planning Guide by Home Layout: Bedrooms, Garage, Basement, Upstairs & More

Brandon Guzman

Planning a MRCOOL DIY 5th Gen Multi-Zone system? Learn when high-wall units, OuttaSight one-way ceiling cassettes and DIY Hybrid ducted air handlers may make sense for bedrooms, garages, basements, upstairs rooms, open living areas, additions, workshops and cabins.

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MRCOOL 18K

MRCOOL DIY 5th Gen Multi-Zone Sizing Guide: 18K vs 27K vs 36K vs 48K vs 55K

Brandon Guzman

Not sure which MRCOOL DIY 5th Gen Multi-Zone system you need? Compare the 18K, 27K, 36K, 48K and 55K condensers, learn how to size individual rooms, understand MRCOOL’s 2/3 Rule, and find the correct R-454B Quick Connect line-set size and length—including how approved line-set extensions and MRCOOL Quick Couplers work.

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