The median annual wage for Stationary Engineers and Boiler Operators in California is $78,490 (May 2024 BLS OES). The mean (average) is $81,960.
Pay spans roughly $43,530 at the 10th percentile to $128,440 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $37.73 per hour. An estimated 7,800 people work as stationary engineers and boiler operators in California.
| Median (annual) | $78,490 |
| Mean (annual) | $81,960 |
| Median (hourly) | $37.73 |
| 10th percentile | $43,530 |
| 90th percentile | $128,440 |
| Employment | 7,800 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.