The median annual wage for Stationary Engineers and Boiler Operators in Washington is $89,170 (May 2024 BLS OES). The mean (average) is $92,070.
Pay spans roughly $65,110 at the 10th percentile to $121,520 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $42.87 per hour. An estimated 630 people work as stationary engineers and boiler operators in Washington.
| Median (annual) | $89,170 |
| Mean (annual) | $92,070 |
| Median (hourly) | $42.87 |
| 10th percentile | $65,110 |
| 90th percentile | $121,520 |
| Employment | 630 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.