As of September 01, 2026, the average annual salary for HVAC Engineer in Illinois is $79,163, equivalent to $38 per hour, $1,522 weekly, or $6,597 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for HVAC Engineer in cities like San Jose, Santa Clara, and San Francisco.
Annually Salaries for HVAC Engineer in Illinois vary widely, spanning from $69,566 to $91,920. Most professionals fall between the 25th percentile ($74,140) and 75th percentile ($85,841), while top earners (90th percentile) make $91,920 per year. This $11,701 pay gap underscores opportunities for salary growth through certifications, specialized skills like Analysis or Hydraulics, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois HVAC Engineer often earn 1.9% higher than national averages due to demand from Fortune 63 companies. However, Illinois currently ranks 14 nationwide for HVAC Engineer job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
