Madison Air Solutions said it raised $2.23 billion in its U.S. initial public offering, selling 82.7 million shares at $27 each. The price came in at the top end of the advertised $25 to $27 range and places the Chicago-based indoor air systems provider at a $13.2 billion valuation.
The company highlighted demand from investors for businesses tied to infrastructure and data centers, citing the higher cooling and power requirements driven by expanding artificial intelligence workloads. The filing also noted geopolitical tensions in the Middle East as a factor contributing to caution in the broader U.S. IPO market.
Madison Air’s own filing estimates the North American market for its products at roughly $40 billion, where the company holds about an 8% share. Within its served verticals, data centers were identified as one of the faster-growing end markets for the company’s air quality solutions.
Founded in 2017 through a series of acquisitions, Madison Air provides indoor air systems across residential and commercial segments. Its customer base spans data centers, advanced manufacturing, education and health care. Last year the company derived 66% of total sales from its commercial business, with the remaining 34% coming from residential operations.
Madison Air, previously operating under the name Madison Indoor Air Quality, was formed under the leadership of Larry Gies, who is the founder and CEO of privately held Madison Industries. The company reported a backlog of $2.02 billion as of December 31.
Certain cornerstone investors had separately indicated interest in buying shares in the offering. Durable Capital Partners, Morgan Stanley’s Counterpoint Global and HRTG each indicated support, with a combined potential commitment of up to $525 million.
The company said it intends to allocate IPO proceeds toward repaying outstanding loans and for general corporate purposes.
Goldman Sachs, Barclays, Jefferies and Wells Fargo Securities served as the joint lead book‑running managers for the offering. Madison Air will trade on the New York Stock Exchange under the ticker symbol "MAIR."
Additional context
The offering underscores continued investor appetite for firms connected to infrastructure and data center needs, areas the company identified as growth drivers. Madison Air’s commercial focus and backlog figure provide indicators of near-term demand across the sectors it serves.