HVAC manufacturers reported weakened residential sales in Q1 2026, citing distributor inventory adjustments, slower new construction activity, and softer unit volumes. In their earnings calls, Carrier and Lennox pointed to external pressures like tariffs, raw material costs, and the transition to R-454B systems as affecting pricing. These fluctuations come at a time when multiple class-action lawsuits have been filed against major OEMs, claiming the companies collaborated in a price-fixing scheme since January 2020. Learn what these OEMs are saying about the lawsuits here.