Stationary Engineers and Boiler Operators salary in Washington
Stationary Engineers and Boiler Operators in Washington earn a median of $91,530 a year ($44.00 an hour), based on BLS data for 520 workers.
Pay ranges from $67,220 for the lowest-paid 10% to $128,250 for the top 10%. That is 16% higher than the national median of $78,620. Washington ranks 6th of 51 states for stationary engineers and boiler operators pay. There are 0.15 stationary engineers and boiler operators per 1,000 jobs here — the job is less common than nationally (location quotient 0.80). The average (mean) salary is $95,180, above the median because a few high earners pull it up.
Pay range for stationary engineers and boiler operators in Washington
| Pay level | Yearly | Hourly |
|---|---|---|
| 10th percentile (entry level) | $67,220 | $32.32 |
| 25th percentile | $76,310 | $36.69 |
| Median | $91,530 | $44.00 |
| 75th percentile | $111,720 | $53.71 |
| 90th percentile (top earners) | $128,250 | $61.66 |
| Average (mean) | $95,180 | $45.76 |
Half of stationary engineers and boiler operators earn more than the median and half earn less. Percentiles show the spread: 10% earn less than the 10th percentile, and 10% earn more than the 90th.
Median paycheck, before taxes
| Pay period | Amount |
|---|---|
| Monthly | $7,627.50 |
| Semi-monthly (24 a year) | $3,813.75 |
| Biweekly (26 a year) | $3,520.38 |
| Weekly | $1,760.19 |
| Hourly | $44.00 |
Based on a full-time year of 2,080 hours. Convert any amount with the hourly to salary converter.
Stationary Engineers and Boiler Operators salary in cities in Washington
| Metro area | Median salary | Workers |
|---|---|---|
| Seattle-Tacoma-Bellevue, WA | $112,250 | 210 |
| Kennewick-Richland, WA | $103,380 | 80 |
| Portland-Vancouver-Hillsboro, OR-WA | $81,250 | 100 |
| Spokane-Spokane Valley, WA | $78,070 | 60 |
| Longview-Kelso, WA | $77,350 | 30 |
Highest-paying states for stationary engineers and boiler operators
| State | Median salary |
|---|---|
| Illinois | $115,780 |
| Wyoming | $111,920 |
| Hawaii | $103,400 |
| Connecticut | $94,870 |
| New York | $94,070 |
| Washington | $91,530 |
| California | $90,650 |
| District of Columbia | $90,470 |
| Alaska | $88,330 |
| Maryland | $85,240 |
See Stationary Engineers and Boiler Operators pay in every state.
Related jobs in Washington
| Job | Median salary | Hourly |
|---|---|---|
| Water and Wastewater Treatment Plant and System Operators | $80,800 | $38.85 |
| Petroleum Pump System Operators, Refinery Operators, and Gaugers | $103,620 | $49.82 |
| Power Plant Operator | $131,620 | $63.28 |
| Power Distributors and Dispatchers | $144,710 | $69.57 |
| Chemical Plant and System Operators | $60,120 | $28.90 |
| Plant and System Operators, All Other | $88,730 | $42.66 |
| Gas Plant Operator | $83,650 | $40.22 |
| Miscellaneous Assemblers and Fabricators | $48,260 | $23.20 |
| First-Line Supervisors of Production and Operating Workers | $79,310 | $38.13 |
| Inspectors, Testers, Sorters, Samplers, and Weighers | $64,420 | $30.97 |
| Packaging and Filling Machine Operators and Tenders | $41,700 | $20.05 |
| Welders, Cutters, Solderers, and Brazers | $63,020 | $30.30 |
| Machinist | $66,160 | $31.81 |
| Baker | $46,140 | $22.18 |
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025 estimates, occupation code 51-8021. Wages include base pay, tips, commissions and shift pay, but not overtime, bonuses or benefits, and exclude the self-employed.
Frequently asked questions
How much does a stationary engineers and boiler operators make in Washington?
The median salary for stationary engineers and boiler operators in Washington is $91,530 a year, or $44.00 an hour. Pay ranges from $67,220 for the lowest-paid 10% to $128,250 for the top 10%.
How much do the highest-paid stationary engineers and boiler operators make in Washington?
The top 10% of stationary engineers and boiler operators in Washington earn at least $128,250 a year. The top 25% earn $111,720 or more.
What is the starting pay for stationary engineers and boiler operators in Washington?
Entry-level pay (the 10th percentile) is about $67,220 a year, and a quarter of stationary engineers and boiler operators earn $76,310 or less.
How many stationary engineers and boiler operators work in Washington?
About 520 stationary engineers and boiler operators are employed in Washington, not counting the self-employed.