A Lennox class action lawsuit search turns up several distinct cases, not one. Lennox International is currently a defendant in a 2026 federal antitrust class action alleging HVAC industry price-fixing, and it recently reached a Washington State settlement over job-posting wage disclosures with a claim deadline in July 2026. Two earlier consumer cases over defective evaporator and condenser coils settled in 2014 and 2015, and their release language still binds people who bought affected units. A securities investigation opened in late 2025 after a sharp stock drop, but no complaint has been filed.
Here is where each case stands and who it covers.
The 2026 HVAC Price-Fixing Antitrust Case
The largest active case is Berg v. Robert Bosch, LLC, et al., Case No. 2:26-cv-10949-SKD-APP, filed in March 2026 in the U.S. District Court for the Eastern District of Michigan before Judge Susan K. DeClercq.1Hagens Berman Sobol Shapiro LLP. HVAC Price-Fixing Antitrust Class Action
Lennox is named alongside Robert Bosch, Trane Technologies, Carrier Global, Daikin, Rheem, and AAON. The complaint alleges these seven manufacturers control roughly 92% of the U.S. HVAC equipment market and conspired starting in January 2020 to inflate prices for residential and commercial equipment through secret meetings, information sharing, and coordinated public signaling of price increases.1Hagens Berman Sobol Shapiro LLP. HVAC Price-Fixing Antitrust Class Action The plaintiffs allege the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) facilitated the exchange of competitive data, that the manufacturers used the trade publication ACHR News to announce and coordinate price increases, and that COVID-19 supply disruptions were used as cover for price hikes that outpaced actual cost increases by roughly 8%.2Facilities Dive. Consumer Sues Manufacturers for Conspiring to Inflate HVAC Prices
The complaint quotes Lennox CEO Alok Maskara as saying in July 2023 that “industry pricing remains disciplined and our own mid-year price increase has been broadly successful,” and CFO Michael Quenzer as saying that “the industry’s generally been disciplined for the past several years” and that “we, as an industry, have realized that pricing, taking it away, does not win market share.”2Facilities Dive. Consumer Sues Manufacturers for Conspiring to Inflate HVAC Prices3Lockridge Grindal Nauen PLLP. HVAC Equipment Antitrust Litigation Lennox and the other defendants have not yet publicly responded to the specific allegations.
The case is early. On May 15, 2026, the court consolidated six related cases into three tracks covering end users, indirect purchasers, and direct purchasers.4HomePros News. And Then There Were Six: HVAC Manufacturer Lawsuits Move Toward Consolidation A discovery stay is in effect, no class has been certified, and no settlement exists.5Justia. HVAC Equipment Antitrust Litigation There is nothing to file a claim on yet. If you bought HVAC equipment from one of the named brands from January 2020 onward, keep your purchase records; class notice, if a class is certified, would come later.
Washington Job-Posting Settlement (Open Until July 13, 2026)
This is the one Lennox case with an open deadline. In Shannon Spencer v. Lennox International Inc., et al., Case No. 25-2-21274-2 SEA, filed in King County Superior Court before Judge Samuel Chung, the plaintiff alleged Lennox violated Washington’s Equal Pay and Opportunities Act by failing to disclose wage ranges, salary scales, and benefits information in job postings.6Simpluris, Inc. EPOA Settlement Lennox7ClaimDepot. Shannon Spencer v. Lennox International Inc. Settlement Notice
Lennox denied the allegations but agreed to a settlement valued at $384,260 to $557,500. The court granted preliminary approval on April 15, 2026, with a final approval hearing set for August 14, 2026.
You are in the class if you applied for a job in Washington with Lennox or one of its affiliates between January 1, 2023, and April 15, 2026. Estimated individual payments run from roughly $1,560 to $5,000, depending on how many people file. July 13, 2026 is the deadline to submit a claim, request exclusion, or file an objection.8ClaimDepot. EPOA Settlement Lennox
The 2015 Evaporator Coil Settlement (Thomas v. Lennox)
The best-known Lennox class action is closed but still legally relevant, because past purchasers are bound by its release. Thomas v. Lennox International, Inc., Case No. 1:13-cv-07747, was filed October 29, 2013, in the U.S. District Court for the Northern District of Illinois before Judge Sara L. Ellis, and terminated on December 9, 2015.9CourtListener. Thomas v. Lennox International, Inc.
The suit alleged Lennox sold HVAC systems with uncoated copper evaporator coils prone to formicary corrosion, a chemical reaction that creates microscopic tunnels in copper tubing and produces pinhole refrigerant leaks.10Top Class Actions. Lennox Evaporator Coil Class Action Settlement Plaintiffs said Lennox knew about the defect, should have used coated copper or aluminum, and typically recharged leaking systems rather than replacing the coils.11Chicago Tribune. Owner of Defective Lennox AC Unit Asks: Can I Opt Out of Class Action and Personally Sue Dealer Who Sold Me Unit
Who the Settlement Covered
The class included U.S. residents who purchased uncoated copper tube evaporator coils under the Lennox, Aire-Flo, Armstrong Air, AirEase, Concord, or Ducane brands between October 29, 2007, and July 9, 2015, for residential use. To claim, the coil had to develop a leak requiring replacement within five years of installation.10Top Class Actions. Lennox Evaporator Coil Class Action Settlement
Tiered Benefits
- First coil failure: a free aluminum or coated-copper replacement coil, plus a one-time $75 service rebate for future use with a Lennox dealer. Labor and refrigerant were not covered.
- Second coil failure: a five-year warranty on the second replacement coil and up to $550 for labor and refrigerant.
- Third coil failure: reimbursement of up to $550 per eligible replacement.
The settlement also set aside $1.25 million for attorneys’ fees.12Chicago Tribune. Confusing Class Action Settlement Doesn’t Cover All Costs
What the Release Means for You Now
The opt-out deadline was October 28, 2015. Anyone who bought a qualifying unit before July 2015 and did not opt out released Lennox and its dealers from all claims related to the coils, except personal injury claims.11Chicago Tribune. Owner of Defective Lennox AC Unit Asks: Can I Opt Out of Class Action and Personally Sue Dealer Who Sold Me Unit That release still applies. Consumers criticized the settlement heavily. The first failure gave them a free part but left them paying labor and refrigerant, and cash reimbursement only appeared on the second or third failure. Class counsel Ari Scharg of Edelson PC acknowledged the settlement did not reimburse costs already incurred.12Chicago Tribune. Confusing Class Action Settlement Doesn’t Cover All Costs Some homeowners reported total coil-related out-of-pocket costs of $900 to $3,000, and full system replacements exceeding $11,000.13Top Class Actions. Should You Join a Lennox HVAC Class Action Lawsuit
The Florida “White Coil” Settlement (Abbott v. Lennox)
A separate case, Abbott v. Lennox Industries Inc., involved a different defect: condenser coils manufactured between 2005 and 2007 that were coated with polyester rather than the intended epoxy or acrylic. The wrong coating caused the aluminum coils to corrode, turn white, and leak refrigerant.14Cooling Post. Lennox Settles White Coil Class Action
Lennox denied wrongdoing and pointed to a repair program it had launched after discovering the supplier’s coating error. The settlement, announced in October 2014, was limited to eligible Florida residents who owned residential property with an affected Lennox system. It offered a free replacement coil for unrepaired units, or reimbursement up to $300 without itemized proof (higher with documentation) for those who had already paid. The claim deadline was March 27, 2015.15PR Newswire. Consumers Who Have a Lennox Air Conditioning or Heat Pump System Could Get Benefits From a Class Action Settlement The case is closed and applied only to Florida residents.
The 2025 Securities Investigation
On October 22, 2025, Lennox disclosed mixed third-quarter results, citing revenue declines and inventory issues, and revised its full-year guidance. The stock closed at $493.07 per share after a decline of over 55%. Levi & Korsinsky then announced an investigation into possible federal securities law violations and began seeking lead plaintiffs.16Access Newswire. LII Active Investigation As of mid-2026, available records do not show that a complaint has been filed or that a lead plaintiff has been appointed. This is an investigation, not a filed class action.