HVAC Price-Fixing Class Action, Were You Overcharged by Carrier, Trane, Rheem or Their Rivals?

Prepared by the AllAboutLawyer.com Editorial Team and reviewed for factual accuracy against PACER court records for Berg v. Robert Bosch GmbH et al, Case No. 2:26-cv-10949-SKD-APP, and Isom v. Trane Technologies PLC et al, Case No. 2:26-cv-11294-RJW-APP, U.S. District Court for the Eastern District of Michigan. Last Updated: May 13, 2026.

Seven major U.S. HVAC manufacturers are facing class action lawsuits alleging they conspired to raise and keep prices of their commercial and residential products artificially high after the pandemic. The lawsuits name Carrier, Trane, Rheem, Daikin, Bosch, Lennox, and AAON — companies that together dominate the American heating and cooling market. No settlement has been reached, and no claim form exists at this stage.

Quick Facts — HVAC Price-Fixing Class Action Lawsuits

Field	Detail
Lawsuits Filed	March 20, 2026 (Berg); April 20, 2026 (Isom)
Defendants	Trane Technologies, Carrier Global Corp., Rheem Manufacturing, Daikin, Robert Bosch, Lennox International, AAON
Alleged Violation	Sherman Antitrust Act, Section 1 (15 U.S.C. § 1); Clayton Act
Who Is Affected	Individuals, businesses, and contractors who purchased HVAC equipment in the U.S. from January 2020 to present
Market Controlled by Defendants	Over 90% of the U.S. HVAC equipment market
U.S. HVAC Market Value	Approximately $31.26 billion (2024)
Current Court Stage	Early litigation — multiple proposed class actions pending
Court & Jurisdiction	U.S. District Court for the Eastern District of Michigan
Lead Plaintiffs	Alyssa Berg (end-user consumer, Berg case); Richard Isom (HVAC contractor, Isom case)
Next Hearing Date	TBD — cases are in early stages
Official Case Website	TBD — no settlement administrator site exists
Last Updated	May 13, 2026

What Is the HVAC Price-Fixing Lawsuit About? Berg v. Robert Bosch GmbH et al, No. 2:26-cv-10949-SKD-APP

If you replaced a furnace, air conditioner, or heat pump since 2020 and felt like the price was shockingly high — this lawsuit is directly about that. A class action lawsuit filed in federal court accuses some of the largest heating and cooling equipment manufacturers in the United States of secretly coordinating to fix prices since at least January 2020, driving costs for HVAC systems to historic highs.

The legal basis is Section 1 of the Sherman Antitrust Act, the federal law that prohibits competitors from agreeing — whether openly or secretly — to fix prices, divide markets, or restrict supply. The complaint argues that the pricing pattern from these manufacturers broke from historical norms beginning in 2020, and that HVAC equipment prices did not follow the Consumer Price Index and the Producer Price Index increases that other major household appliances experienced during the same period. In other words, the price of your HVAC system went up far more than inflation alone would explain.

The plaintiffs allege the seven companies used two specific channels to coordinate. Executives used public statements, industry meetings, and their participation in an information-sharing program managed by an industry trade group to set prices that outpaced broader price indexes and exceeded what they would have been in a competitive market. The complaint points to the Air-Conditioning, Heating and Refrigeration Institute (AHRI) — whose board has been largely comprised of executives from the defendant companies — as a key venue for that alleged coordination.

The defendants also allegedly used trade publication announcements to signal pricing intentions to each other. One quote from the complaint is particularly direct. The lawsuit quotes Lennox CFO Michael Quenzer at a July 2025 conference: “The next pricing level will be early next year when we all come out and announce our next full round of price increases. For the balance of the year, I think we’re pretty well set from a price perspective. Next year, we’ll do our annual price increase, and just like we always do, we expect similar results by others.” The plaintiffs argue language like that goes well beyond a company simply monitoring competitors — it reads as an open assurance to rivals that price discipline would hold.

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The defendants deny wrongdoing. Carrier said it “embraces competition and operates lawfully and with integrity.” Rheem said it “denies the allegations in the complaint.” Trane said it “strongly disputes the allegations” and intends to “vigorously defend” itself. All defendants have denied the claims. None of these allegations have been proven in court. For context on how antitrust class actions like this one work and what consumers can recover, the RealPage price-fixing class action is a recent example of a successful antitrust case where consumers received compensation for inflated prices.

Are You Part of the HVAC Price-Fixing Class Action Lawsuit?

There are actually two separate lawsuits here covering two different types of buyers — and you may fall into one or both depending on how you purchased your equipment.

The Berg case covers end-user consumers and businesses. Plaintiff Alyssa Berg is seeking to represent a class of individuals and businesses that purchased HVAC equipment from 2020 to present. If you are a homeowner, landlord, or business owner who bought a system through a contractor or dealer, this case is likely the one that covers you.

The Isom case covers direct purchasers. Richard Isom brought this civil antitrust action on behalf of himself and all persons and entities who directly purchased HVAC equipment manufactured by defendants in the United States beginning at least as early as January 1, 2020, through the present. If you are an HVAC contractor, distributor, or wholesaler who purchased equipment directly from the manufacturers, this case is aimed at your situation.

You may be part of this class if:

• You purchased any residential or commercial HVAC equipment — including air conditioners, furnaces, heat pumps, or packaged systems — in the United States since January 1, 2020
• The equipment was manufactured by Carrier, Trane, Rheem, Daikin, Bosch (including York, Hitachi, Coleman, Luxaire), Lennox, or AAON brands
• You paid the manufacturer’s list or market price for the equipment, whether as a consumer or as a direct purchaser in the supply chain

You are likely not included if:

• Your HVAC purchase was made before January 1, 2020
• You purchased equipment from a manufacturer not named in the lawsuit
• You purchased used or reconditioned equipment not sold through authorized channels

Residential HVAC equipment prices broadly fall between $4,000 and $15,000 at the manufacturer level, with commercial systems ranging from $5,000 to over $100,000 depending on system type and application. Given that almost every home and business runs on equipment made by one of these seven companies, the potential class size runs into the millions of households and businesses across the United States. For a similar antitrust case involving price-fixing allegations and consumer overcharges, see the Juul antitrust class action currently moving toward trial.

What Are HVAC Plaintiffs Seeking in This Lawsuit?

No money is available to claim right now. No settlement has been proposed, and no claim form exists. Here is what the plaintiffs have asked the court to award.

The Isom complaint demands a trial by jury and seeks to recover treble damages and the costs of the suit, including reasonable attorneys’ fees, for injuries sustained resulting from defendants’ violations of Section 1 of the Sherman Act, 15 U.S.C. § 1, and to enjoin further violations. Treble damages means three times the actual overcharge proven at trial — that is what federal antitrust law provides to make it financially worthwhile for plaintiffs to pursue these cases and to punish companies that fix prices.

The plaintiffs are also seeking injunctive relief — a court order prohibiting the companies from continuing to coordinate pricing through industry groups, trade publications, or public signaling on earnings calls. The lawsuit claims the conspiracy generated billions of dollars in overcharges for consumers over six years. If proven, the scale of those damages could be among the largest antitrust recoveries in consumer product history.

It is important to understand what the law requires here. Antitrust law differentiates between “conscious parallelism” — when competitors in a concentrated market independently adopt similar business strategies by observing each other’s actions, which is legal — and an actual agreement or conspiracy to fix prices, which is illegal. For a lawsuit to survive dismissal, courts require evidence of actions that go beyond parallel behavior. The plaintiffs believe the executive statements quoted in their complaint cross that line.

What Should You Do If You Bought HVAC Equipment Since 2020?

Most class members will be automatically included if the court eventually certifies these cases as class actions. You do not need to file anything or contact anyone right now. Here is what makes sense to do today.

• Save all your purchase records — invoices, receipts, contractor quotes, permit applications, and financing documents showing what you paid for any HVAC equipment purchased since January 2020. These records establish both your membership in the class and the dollar amount of your potential overcharge claim.
• Document your equipment brands — note the manufacturer name and model of every system you purchased. If it is a Carrier, Trane, Lennox, Rheem, Daikin, Bosch (or its York, Coleman, Hitachi, Luxaire brands), or AAON product, you fall within the defendant list.
• Monitor the PACER docket — Berg v. Robert Bosch GmbH, Case No. 2:26-cv-10949-SKD-APP, and Isom v. Trane Technologies, Case No. 2:26-cv-11294-RJW-APP, are both publicly searchable at PACER.gov. Check for scheduling orders, class certification motions, and any consolidation of the related cases.
• Do not file separately — let the class actions develop. If a settlement is eventually reached, class members will be notified directly with instructions on how to participate or opt out.
• Contractors and businesses with large purchases — if you spent significant sums on equipment for commercial projects during the class period, consider a free legal consultation with a consumer rights lawyer to understand whether the scale of your individual damages justifies any additional action.

HVAC Price-Fixing Lawsuit Timeline

Milestone	Date
Alleged Conspiracy Begins	January 1, 2020
Berg v. Robert Bosch Filed	March 20, 2026
Isom v. Trane Technologies Filed	April 20, 2026
Safford’s Heating & Cooling v. Bosch Filed	TBD — filed two days after Isom case
Class Certification Motion	TBD — no scheduling order publicly available
Next Scheduled Hearing	TBD — check PACER docket for updates
Expected Settlement Timeline	TBD — cases are in early litigation phase

Frequently Asked Questions

Is there a class action lawsuit against Carrier, Trane, and Rheem for price-fixing?

 Yes. Berg v. Robert Bosch, filed in the U.S. District Court for the Eastern District of Michigan on March 20, 2026, names Robert Bosch, Trane Technologies, Carrier Global, Daikin, Lennox International, Rheem Manufacturing, and AAON as defendants. A second case, Isom v. Trane Technologies, was filed by an HVAC contractor in the same court on April 20, 2026.

Do I need to do anything right now to be included? 

No. You do not need to register, sign up, or contact anyone at this stage. If the court certifies the class, all qualifying purchasers will be automatically included. You will receive direct notice if and when the case reaches a settlement or proceeds to trial.

When will a settlement be reached in the HVAC price-fixing case?

 TBD — both cases are in early litigation. Antitrust class actions of this scale typically take several years to resolve. Class certification, expert discovery on economic damages, and any settlement negotiations all lie ahead. There is no projected timeline available from the court.

Can I file my own lawsuit against these HVAC manufacturers?

 Yes. You have the right to opt out of the class action and pursue an individual antitrust claim. Individual claims make sense only when your personal damages are substantial enough to justify standalone litigation. Most consumers are better served by waiting for the class action to develop, since antitrust attorneys typically handle these cases on contingency.

How will I know if the HVAC price-fixing lawsuit settles? 

The court will require direct notice to all class members — typically by mail or email — if a settlement is proposed and approved. You can also monitor PACER for new filings or set a Google alert for “Berg v. Bosch HVAC settlement.”

Did the manufacturers have legitimate reasons for raising prices? 

The defendants say yes — they have cited COVID-19 supply chain disruptions, new SEER2 energy efficiency standards, and the mandated refrigerant transition under the American Innovation and Manufacturing (AIM) Act as justifications. The complaint claims these factors do not fully explain the scale of the price increases, noting that HVAC equipment prices rose faster than broader inflation and comparable manufacturing indices during the same period. The court will determine whether the price increases were the result of legitimate market forces or illegal coordination.

What is the Sherman Act, and how does it apply here?

 The Sherman Antitrust Act is a federal law that prohibits agreements between competitors to fix prices, restrict supply, or divide markets. Section 1 covers conspiracies in restraint of trade. If the plaintiffs can show the seven HVAC companies reached an actual agreement — not just independently followed the same pricing strategy — the companies can be held liable for treble damages, meaning three times the proven overcharge.

Sources & References

• PACER/Justia Docket, Berg v. Robert Bosch GmbH et al, Case No. 2:26-cv-10949-SKD-APP, U.S. District Court, Eastern District of Michigan — dockets.justia.com

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Legal claims and outcomes depend on specific facts and applicable law. For advice regarding a particular situation, consult a qualified attorney.