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Following Johnson Controls' divestiture of its residential and light commercial HVAC businesses to Bosch in 2025, nearly all of its revenue comes from commercial HVAC (60%) and fire and security products and services (40%). A 2016 merger joined Johnson Controls' HVAC and Tyco's fire and security businesses with the premise that there is synergy in offering a broader variety of automation products and solutions to commercial buildings. We estimate Johnson Controls' pro forma revenue mix will be one-third products, one-third installation, and one-third services.

GE Aerospace is the global leader in designing, manufacturing, and servicing commercial aircraft turbine engines, along with partner Safran in their CFM joint venture. With its massive global installed base of nearly 80,000 commercial and military engines, GE Aerospace earns most of its profits on recurring service revenue of that equipment, which operates for decades. GE Aerospace is the remaining core business of the company formed in 1892 with historical ties to American inventor Thomas Edison; General Electric became a storied conglomerate, with peak revenue of $130 billion in 2000, until it spun off its appliance, finance, healthcare, and wind and power businesses between 2016 and 2024.