In October 2024, major HVAC manufacturers including Carrier, Daikin, Rheem, Lennox, Bosch, AAON, Trane Technologies, and Mitsubishi Electric filed motions to dismiss class action lawsuits alleging they coordinated price increases starting in January 2020. This legal development directly affects homeowners and businesses trying to understand why cooling and heating equipment costs have risen significantly over the past few years.

What the Lawsuit Alleges

Plaintiffs claim that several manufacturers representing over 90 percent of the U.S. HVAC equipment market engaged in price fixing through coordinated actions. They argue that the companies used industry information sharing, public price announcements, and earnings reports to signal their pricing intentions to one another, resulting in artificially inflated costs for consumers.

The lawsuits target three categories of buyers: direct purchasers like contractors and distributors, commercial indirect purchasers, and end user indirect purchasers such as homeowners. The allegations suggest that manufacturers collaborated to drive prices to record levels rather than raising them independently in response to market conditions.

How Manufacturers Defend Themselves

courtroom legal lawsuit debate
Photo by Wesley Tingey

The defendants argue that price increases resulted from legitimate business pressures, not collusion. They point to several documented cost factors that affected the entire industry simultaneously: COVID-era supply chain disruptions, new SEER2 energy efficiency standards, refrigerant transitions required by the AIM Act, and tariffs on steel, aluminum, and copper. These factors forced manufacturers to redesign product lines, retool factories, and manage inventories of both legacy and next-generation equipment.

In their motion, manufacturers emphasize that they have not been accused of any direct communication about price fixing. They argue that the complex regulatory changes affecting refrigerants and efficiency justified their pricing actions independently. The defendants note disparities in the magnitude and timing of price increases across companies and product categories, arguing these differences contradict claims of coordination.

The Evidence Question

A critical point in the case centers on what constitutes evidence of price fixing. Manufacturers contend that plaintiffs have provided no direct proof of an agreement to fix prices, such as emails, phone calls, or written communications between companies. They argue that parallel price increases during a period of shared economic stress do not automatically prove conspiracy.

Defendants also challenge the statistical analysis plaintiffs submitted to support claims of artificial inflation. They say the analysis lacks sufficient detail about methodology and data sources to distinguish between collusion and independent decision-making under similar circumstances. Public price announcements, they argue, serve a legitimate purpose by allowing contractors and distributors to plan purchases and communicate changes to customers.

What This Means for Buyers

The dismissal motions signal that this legal battle could take considerable time to resolve. While the court determines whether plaintiffs have presented sufficient evidence of a conspiracy, homeowners and businesses seeking to purchase or upgrade HVAC systems should understand the context behind recent price increases.

If the lawsuits proceed and manufacturers are found liable, class action settlements could eventually provide refunds or compensation to affected purchasers. However, manufacturers’ explanations regarding supply chain disruptions, regulatory compliance costs, and material tariffs represent legitimate industry-wide challenges that affect pricing across all major equipment categories. Understanding the broader HVAC industry landscape helps buyers make informed decisions about timing and product selection.

Industry Transparency and Information Sharing

factory manufacturing equipment production
Photo by Simon Kadula

Plaintiffs allege that trade organizations, particularly industry associations representing manufacturers, facilitated price coordination through information sharing. Manufacturers counter that these organizations distribute only aggregated, non-confidential data rather than individual pricing information. They argue that this type of general information sharing is standard practice and does not indicate conspiracy.

Public earnings reports and statements made during quarterly calls are also cited by plaintiffs as evidence of price signaling. Manufacturers maintain these communications serve legitimate investor relations purposes and that discussing price increases during earnings calls is standard business practice. The regulatory environment surrounding HVAC businesses continues to evolve, affecting how companies communicate with investors and the public.

Moving Forward

The court must now decide whether the complaints contain sufficient factual allegations to support a plausible price fixing conspiracy or whether they describe manufacturers making independent pricing decisions under similar economic pressures. This decision will determine whether the lawsuits proceed to discovery and trial or are dismissed.

For consumers evaluating HVAC equipment purchases or upgrades, awareness of this legal matter provides context for understanding pricing decisions made over the past several years. Whether the court ultimately finds evidence of coordination or rules in favor of manufacturers’ independent business judgment defenses, the outcome will clarify the reasons behind the significant price increases homeowners and contractors have experienced since 2020.