Mini split sizing chart: BTU by square footage, verified
Mini split sizing chart by square footage, 200 to 1,200 ft². A 600 ft² room in zone 5 needs 17,500 BTU of heat at 5°F. Every row from one published method.
verified Aug 2026 · 9 minGuides
Long-form buying research, organized by the questions buyers actually ask. Every figure is verified against source documents and dated.
Are mini splits worth it? The real disadvantages
Are mini splits worth it? A true-DIY 12k runs $2,359 shipped vs a $4,500 pro quote. The disadvantages of mini split systems, priced, and who should not buy one.
verified Aug 2026 · 12 minDIY mini split installation: 3 tiers, tools, where DIY ends
DIY mini split installation is real on 2 brands: MRCOOL DIY and Zone Air mate a 25 ft quick-connect line set, no vacuum pump. The 3 tiers and where DIY ends.
verified Aug 2026 · 11 minWhat is a mini split and how does it work? Explained
What is a mini split? A two-part heat pump: one indoor head, one outdoor unit, one 25 ft line set, no ducts. How it heats and cools, and what the name means.
verified Aug 2026 · 9 minWhat size mini split do I need? BTU by room, verified
A 450 ft² room in climate zone 5 needs about 13,000 BTU of heat at 5°F. How to size a mini split by load factors, with the calculator and the cold math.
verified Aug 2026 · 13 min