What started in March as a single antitrust complaint has grown into a sprawling legal fight with real consequences for anyone who has bought HVAC equipment directly from a major manufacturer since 2020. At a May 14 status conference before Judge Susan DeClercq in the U.S. District Court for the Eastern District of Michigan, attorneys confirmed the HVAC price-fixing lawsuit count had reached six separate cases, all alleging the same core conspiracy: that the largest manufacturers in the industry coordinated price increases rather than competing independently. The court is now organizing the cases along three distinct plaintiff tracks, and one of them exists specifically for contractors and distributors, not just homeowners.
How We Got From One Case to Six
The first complaint, Berg v. Robert Bosch, was filed March 20, 2026, by a Minnesota end-user consumer, naming Bosch, Carrier, Trane, Daikin, Lennox, Rheem, and AAON, along with multiple subsidiaries and joint ventures, as defendants. It alleged that beginning no later than January 2020, the manufacturers used the Air-Conditioning, Heating, and Refrigeration Institute's member data-sharing program and trade publication ACHR News's coverage of price increase announcements as channels for coordinating, rather than independently setting, pricing decisions across the industry.
A second complaint, Isom v. Trane Technologies, followed on April 20, this time filed on behalf of direct purchasers, meaning contractors and distributors who buy equipment directly from manufacturers rather than through retail channels. A third case, Safford's Heating, Cooling and Refrigeration v. Robert Bosch, landed two days later. By mid-May, additional suits including one from Husky Heating & Cooling in Arkansas and another from a Florida contracting business had pushed the total to six, with attorneys representing each case agreeing to coordinate pretrial proceedings even as they remain formally separate filings.
What the Lawsuits Actually Allege
The complaints describe a documented pattern: price increases at all seven named manufacturers following one another within roughly two weeks, repeated dozens of times since 2020, alongside public statements at industry conferences and earnings calls that plaintiffs argue functioned as coded signals rather than ordinary forward guidance. The lawsuits cite Producer Price Index data showing HVAC equipment prices rose approximately 53.5 percent from January 2020 through early 2026, compared to roughly 30 percent for general consumer goods over the same period, and allege manufacturers cut production by as much as a third during 2025 demand softness specifically to avoid signaling that prices might come down.
Every named manufacturer has denied the allegations. Carrier has stated it operates lawfully and with integrity and intends to fight the claims vigorously. Trane has issued a similar denial. Daikin has acknowledged the filing without commenting on its merits. None of the cases have reached discovery, and no court has made any finding on whether the alleged conduct actually occurred.
Why the Direct-Purchaser Track Matters Specifically to Contractors
The distinction between the end-user track and the direct-purchaser track is not a technicality. Contractors and distributors who bought equipment directly from any of the seven named manufacturers since January 2020 may have a separate legal claim, distinct from the one available to homeowners who simply bought a finished system through a contractor. Multiple law firms bringing the Isom, Safford's, and Husky Heating cases are actively organizing contractor and distributor plaintiffs specifically because direct purchasers, who paid the alleged overcharge first and most directly, often have the cleanest path to recovering damages in cases like this.
That said, none of this moves quickly. Antitrust cases of this scale, with this many defendants and this much potential exposure, typically run for years before any settlement or trial outcome. Contractors weighing whether to get involved should not expect a fast resolution, but preserving records now, regardless of whether you ultimately join a case, costs nothing and keeps the option open.
