HVAC / Refrigeration Technician Salary

Realistic starting pay sits between the 10th and 25th percentile — $19.25 to $23.25 per hour nationally. Where you land in that band depends on prior mechanical experience and any credentials you bring; most people cross the median within 3–5 years, and the jump from entry to mid-level is the largest percentage raise in the trade.

Per BLS OES, May 2025, the highest-paying states for HVAC and refrigeration technicians are Alaska ($37.23/hr median), Illinois ($37.21/hr median) and Massachusetts ($37.16/hr median). High-cost-of-living and union-dense states top the list, but plant-heavy lower-cost states often win on take-home purchasing power — a median wage goes further in the Midwest and South than the coastal figure suggests.

More than most trades — plants break at night and on weekends, and shutdowns/outages concentrate paid hours. A hvac / refrigeration technician averaging 5 hours of overtime a week clears roughly $66,501 a year at the median rate; heavy-overtime sites (24/7 operations, annual outages) push total earnings past $73,212. Shift differentials of $1–$3/hr for 2nd/3rd shift stack on top of that.

Substantially, yes. Residential service pays the least; commercial more; industrial and process refrigeration the most. Plant roles — chillers, boilers, cooling towers, and especially ammonia (NH3) refrigeration in food processing and cold storage — pay a premium because the equipment is bigger, the licensing is stricter, and downtime is expensive. Moving from residential service to an industrial ammonia plant is one of the largest pay jumps available in the HVAC trade.

EPA 608 Universal is the floor — assumed, not a differentiator. The premium credentials are ammonia-specific: RETA's CARO/CIRO certifications and IIAR process-safety training for NH3 plants, plus boiler operator licenses where states require them. Ammonia refrigeration operators are scarce enough that food-processing and cold-storage plants routinely pay several dollars an hour over comfort-cooling rates.