Uploaded May 2026 | Updated September 2026, 2 weeks ago
Can you really install a full 3-zone MRCOOL® DIY® ductless mini split system in a single day? In Arizona? In the middle of summer? Yeah — turns out you can.
In this video we walk through the entire install from unboxing to cool air, including mounting all three indoor units, running the pre-charged line sets, setting up the outdoor condenser, and firing everything up. No HVAC experience required, no special tools, no vacuum pumps — just the MRCOOL® DIY® system and a long, hot day.
Can you really install a full 3-zone MRCOOL® DIY® ductless mini split system in a single day? In Arizona? In the middle of summer? Yeah — turns out you can.
In this video we walk through the entire install from unboxing to cool air, including mounting all three indoor units, running the pre-charged line sets, setting up the outdoor condenser, and firing everything up. No HVAC experience required, no special tools, no vacuum pumps — just the MRCOOL® DIY® system and a long, hot day.
