The service agreement flywheel is what separates HVAC from every other trade PE has rolled up. A maintenance agreement - typically $150-$300 per year - generates 40 percent gross margins on its own. But the real number is the pull-through: every dollar of agreement revenue generates approximately two dollars in repair and replacement work. A platform with 3,000 active agreements is not sitting on $750,000 in recurring revenue. It is sitting on $2.25 million in total annual revenue that compounds every time a technician walks through a customer's door.
Then there is the refrigerant transition. As of January 2025, new residential HVAC systems can no longer use R-410A. R-454B cylinder prices have surged from $345 to over $2,000 since 2021. R-410A service prices have tripled. Recharging an ageing system is becoming economically irrational - and 84 percent of the 110 million installed HVAC units in the US are over ten years old. The replacement wave is not speculative. It is federally mandated and demographically locked in.
PE knows this. The share of HVAC M&A driven by financial buyers went from 8 percent in 2023 to 51 percent in the first half of 2025.
Champions Group sold to Blackstone at 18.5 times EBITDA. Sila Services sold to Goldman at 17 times. Redwood Services took on Altas at 17 times. These are not trades valuations. They are SaaS-adjacent multiples - paid because the recurring revenue economics, the replacement cycle visibility, and the 29,000 remaining independent targets justify them.