HVAC and Water Systems Stocks Surge in Q1, Beating Revenue Estimates by 6.9%

The HVAC and water systems sector reported strong first-quarter results, with aggregate revenues surpassing analyst consensus by 6.9%. Share prices across the group have risen 7.9% on average since the earnings releases as of June 2, 2026, reflecting investor resilience despite mixed individual performances. AAON (NASDAQ:AAON) led the pack, reporting a 54.3% year-on-year revenue surge to $496.9 million, beating estimates by 29.5%, the widest margin in the peer group. Its stock jumped 44.2% post-earnings. Advanced Drainage Systems (NYSE:WMS) revenue rose 9.9% to $676.8 million, topping expectations by 3.8%, though shares edged up only 1.7%. Carrier Global (NYSE:CARR) exceeded revenue forecasts by 6.8% at $5.34 billion, but its weak full-year guidance tempered market enthusiasm, leaving the stock up 4.3%. A.O. Smith (NYSE:AOS) proved a notable laggard, with revenue declining 1.9% to $945.6 million and missing estimates by 3.5%. Its full-year EPS guidance fell significantly short, sending shares down 10.6%. Zurn Elkay (NYSE:ZWS) posted an 11.4% revenue gain to $433 million, beating by 3.2%, yet its stock remained flat. The sector's essential, non-discretionary product demand and energy-efficiency trends continue to support replacement revenue, while new installations remain sensitive to construction cycles and interest rates.