Mitsubishi Electric essentially created the ductless mini-split category and still dominates it. The Japanese manufacturer entered the U.S. market in 1982, and its Hyper-Heating INVERTER (H2i) technology has become the benchmark for cold-climate performance - maintaining 87% heating capacity at -2°F and 76% at -13°F. No competitor matches those numbers consistently.

U.S. operations run through Mitsubishi Electric Trane HVAC US (METUS), a joint venture headquartered in Suwanee, Georgia. The Trane partnership expanded Mitsubishi's dealer network and service infrastructure significantly. For consumers, this means easier access to qualified installers than early mini-split adopters faced a decade ago.

The Diamond Contractor program is Mitsubishi's top installer tier, requiring specific training and sales volume. Diamond Contractors get priority support and access to extended warranty programs. If you're considering Mitsubishi, asking whether your installer holds Diamond status tells you something about their experience with the brand.