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Madison Industries

Verified

Operating Company

Madison Industries logo
US 500+ employees Website
Hvac

Manufacturer and platform of indoor air quality and HVAC equipment brands including Nortek, AprilAire, and Broan.

Headquarters: US (outside the US map).

Ownership map

Ownership links are documented, evidence-gated edges, shown as reported by their sources. Naming a company is not an accusation against it. See our methodology and legal notes.

Ownership map for Madison IndustriesDivestedDivestedPart OfPart OfPart OfPart OfPart OfPart OfPart Ofbacked byparent ofparent ofparent ofparent ofparent ofparent ofparent ofrolled up intorolled up intorolled up intorolled up intorolled up intorolled up intorolled up intorolled up intoAcoustiFLO: Operating CompanyACAcoustiFLOAprilAire: Operating CompanyAPAprilAireBig Ass Fans: Operating CompanyBig Ass FansDectron Inc.: Operating CompanyDectron Inc.Dehumidified Air Solutions: PlatformDehumidified Air Solu…Dri-Steem: Operating CompanyDri-SteemDri-Steem Humidifier Co.: Operating CompanyDri-Steem Humidifier …EWC Controls Inc.: Operating CompanyEWC Controls Inc.Eaton-Williams Group Limited: Operating CompanyEWEaton-Williams Group …Econar Energy Systems Corp.: Operating CompanyEEEconar Energy Systems…Enerzone Systems: Operating CompanyEnerzone SystemsHuntair, Inc.: Operating CompanyHIHuntair, Inc.Lindsay Goldberg: Operating CompanyLGLindsay GoldbergMadison Air: PlatformMAMadison AirMadison Industries: Operating CompanyMadison IndustriesMelrose Industries plc: Operating CompanyMIMelrose Industries plcNortek Air: Operating CompanyNortek AirNortek Global HVAC: Operating CompanyNortek Global HVACNortek Global HVAC (NGH): Operating CompanyNGNortek Global HVAC (N…Phoenix Wholesale Inc.: Operating CompanyPWPhoenix Wholesale Inc.PoolPak International LLC: Operating CompanyPIPoolPak International…Research Products Corp.: PlatformRPResearch Products Cor…Research Products Corporation (RPC): Operating CompanyResearch Products Cor…Rheem: PlatformRheemSeresco: Operating CompanySerescoSpecified Air Solutions: PlatformSASpecified Air Solutio…The Sterling Group: Pe FirmTSThe Sterling Group
Operating CompanyPe FirmPlatform

Ownership

Ownership links are documented, evidence-gated edges, shown as reported by their sources. A verified mark denotes an independently corroborated edge; links shown as reported are drawn as their sources record them and are not independently corroborated. Naming a company is not an accusation against it. See our methodology and legal notes.

Market signals

Acquisition history

Acquisition timeline202120222023202420252021 · Majority stake → Nortek Air (verified)2021 · Majority stake → Big Ass Fans2024 · Majority stake → Nortek Global HVAC (verified)2024 · Majority stake → Nortek Global HVAC (NGH) (verified)2024 · Exit → Nortek Global HVAC2025 · Add-on acquisition → Research Products Corp. (verified)2025 · Majority stake → Research Products Corporation (RPC)
7 recorded deals, 2021–2025verifiedunverified

Acquisition footprint

US acquired companies by state Alaska: no recorded acquired companies Alabama: no recorded acquired companies Arkansas: no recorded acquired companies Arizona: no recorded acquired companies California: no recorded acquired companies Colorado: no recorded acquired companies Connecticut: no recorded acquired companies District of Columbia: no recorded acquired companies Delaware: no recorded acquired companies Florida: no recorded acquired companies Georgia: no recorded acquired companies Hawaii: no recorded acquired companies Iowa: no recorded acquired companies Idaho: no recorded acquired companies Illinois: 2 acquired companies Indiana: no recorded acquired companies Kansas: no recorded acquired companies Kentucky: no recorded acquired companies Louisiana: no recorded acquired companies Massachusetts: no recorded acquired companies Maryland: no recorded acquired companies Maine: no recorded acquired companies Michigan: no recorded acquired companies Minnesota: no recorded acquired companies Missouri: 3 acquired companies Mississippi: no recorded acquired companies Montana: no recorded acquired companies North Carolina: no recorded acquired companies North Dakota: no recorded acquired companies Nebraska: no recorded acquired companies New Hampshire: no recorded acquired companies New Jersey: no recorded acquired companies New Mexico: no recorded acquired companies Nevada: no recorded acquired companies New York: no recorded acquired companies Ohio: no recorded acquired companies Oklahoma: no recorded acquired companies Oregon: no recorded acquired companies Pennsylvania: no recorded acquired companies Rhode Island: no recorded acquired companies South Carolina: no recorded acquired companies South Dakota: no recorded acquired companies Tennessee: no recorded acquired companies Texas: no recorded acquired companies Utah: no recorded acquired companies Virginia: no recorded acquired companies Vermont: no recorded acquired companies Washington: no recorded acquired companies Wisconsin: no recorded acquired companies West Virginia: no recorded acquired companies Wyoming: no recorded acquired companies
  1. 1. Missouri 3
  2. 2. Illinois 2
1–4 5–14 15–39 40–79 80+ no recorded acquired companies
Where the brands Madison Industries acquired are headquartered, by US state. A count of targets, not a market-share claim.

Deals

Majority stake Sep 2024
Verified

Rheem to acquire Nortek Global HVAC from Madison Industries

Madison Industries → Nortek Global HVAC
Majority stake Sep 2024
Verified

Rheem to acquire Nortek Global HVAC from Madison Industries

Madison Industries → Nortek Global HVAC (NGH)
Majority stake Apr 2021
Verified

Madison Industries agrees to acquire Nortek Air

Madison Industries → Nortek Air
Majority stake Jul 2021

Madison Industries acquires Big Ass Fans

Madison Industries → Big Ass Fans
Add-on acquisition May 2025
Verified

Madison Industries acquires Research Products Corp. (AprilAire)

Madison Industries → Research Products Corp.
Majority stake May 2025

Madison Industries acquires Research Products Corporation (RPC)

Madison Industries → Research Products Corporation (RPC)
Exit Sep 2024

Rheem to acquire Nortek Global HVAC from Madison Industries

Madison Industries → Nortek Global HVAC