US HVAC Season Dates by Region
Knowing your local HVAC season dates helps you schedule maintenance at the right time, budget for energy costs, and avoid peak pricing. These dates are climate averages — your actual experience may vary based on the specific year and local microclimate.
HVAC Maintenance Tips
Schedule AC service 4–6 weeks before the cooling season and furnace service before the heating season. Replace filters at the start of each season. Check insulation and weather seals in spring and fall to improve efficiency.
Frequently Asked Questions
US climate zones differ significantly: the South has longer, hotter summers; the Northwest has mild summers but rainy winters; the Northeast and Midwest have cold winters requiring long heating seasons.
These are historical climate averages based on NOAA data. Year-to-year variability means your actual season may start 2–4 weeks earlier or later.
Off-season (fall for AC, spring for heating) typically offers better pricing and faster installation since demand is lower.