HVAC Apprentice Salary in Illinois

Our salary data is derived from real HVAC job postings on HVACJobsHQ that include salary information. We use statistical methods including bootstrap percentile calculations with time-decay weighting to ensure our numbers reflect current market conditions.

• Data source: Job postings on HVACJobsHQ with disclosed salary ranges
• Methodology: Bootstrap resampling (500 iterations) with 90-day half-life weighting
• State adjustments: Geographic cost-of-living multipliers applied to national baselines (Illinois: +5%)
• Update frequency: Data refreshed nightly as new job postings are added

Data quality: Good • Based on 108 national salary data points