5.7.7Segment

Ventilation & Air Quality Equipment

Manufacturers of commercial and industrial ventilation fans, air filtration equipment, and indoor air quality systems.

4
Verticals

Overview

Ventilation & Air Quality Equipment covers fans, blowers, air-handling, filtration, and air-purification equipment for commercial, industrial, and institutional buildings. At ~$8B it is led by ventilation and air-quality specialists (Greenheck, Daikin/AAF, Camfil, Systemair) serving the building and industrial markets.

Demand has been meaningfully boosted by post-pandemic indoor-air-quality awareness (ventilation, filtration, and air purification in schools, offices, and healthcare), alongside energy-recovery ventilation and industrial air-handling needs. It is consolidating, with IAQ a durable structural tailwind.

Market snapshot

Market size
~$8B
Growth
~6.3%CAGR (2017–22, nominal)
Companies
~382 firms
Firms by employee count

50.3% of firms have fewer than 20 employees: 192 micro-businesses, below most mandates.

The investable universe190 firms with 20+ employees
20–99
12164%
100–499
4222%
500+
2714%

Indoor air quality moved from a compliance line to a specification requirement after 2020, and filtration and ventilation demand has held rather than reverted. The equipment is unglamorous and the manufacturers are small, but the aftermarket (filters, service, commissioning) recurs against an installed base that only grows.

NAICS 333413. U.S. Census Bureau, 2022 Statistics of U.S. Businesses; U.S. Census Bureau, 2022 Economic Census.

Business model & economics

Revenue model

Ventilation/filtration equipment sales plus filter consumables

Key economics

Revenue per firm
$20,997,838
Revenue per employee
$260,783
Employees per firm
74.8
Recurring revenue
Moderate–High

recurring filter/consumable replacement

EBITDA margin
Equipment plus recurring consumables
Capex intensity
Moderate

Characteristics

  • Scale-driven: payroll is only 20% of revenue, so the cost base is assets, not headcount
  • Moderate strategic-buyer pool: 27 firms exceed 500 employees, so a scaled asset has buyers, but not many
  • Post-pandemic IAQ a durable structural tailwind.
  • Energy-recovery ventilation and filtration growing.
  • Filter consumables provide recurring revenue.

NAICS 333413. U.S. Census Bureau, 2022 Statistics of U.S. Businesses; U.S. Census Bureau, 2022 Economic Census.

M&A deal context

Deal activityModerate

Who’s acquiring

  • Ventilation & air-quality specialists
  • HVAC & filtration strategics
  • PE-backed platforms

What’s driving deals

  • Indoor-air-quality and filtration demand.
  • Energy-recovery ventilation adoption.
  • Consumable-driven recurring revenue.

Verticals in this segment

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