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The differences between stationary engineers and assistant chief engineers can be seen in a few details. Each job has different responsibilities and duties. While it typically takes 1-2 years to become a stationary engineer, becoming an assistant chief engineer takes usually requires 2-4 years. Additionally, an assistant chief engineer has an average salary of $93,642, which is higher than the $69,163 average annual salary of a stationary engineer.
The top three skills for a stationary engineer include HVAC, preventive maintenance and plumbing. The most important skills for an assistant chief engineer are HVAC, plumbing, and customer service.
| Stationary Engineer | Assistant Chief Engineer | |
| Yearly salary | $69,163 | $93,642 |
| Hourly rate | $33.25 | $45.02 |
| Growth rate | 4% | 2% |
| Number of jobs | 5,010 | 15,988 |
| Job satisfaction | - | - |
| Most common degree | Associate Degree, 35% | Bachelor's Degree, 37% |
| Average age | 50 | 49 |
| Years of experience | 2 | 4 |
Stationary Engineers are employees who are trained to operate machines and equipment. They mainly operate mechanical equipment, boilers, steam engines, and other stationary engines. They are also trained to conduct maintenance checks and basic repairs on such equipment. Stationary Engineers should be able to read gauges on the machines and assess the fuel levels. They are expected to monitor the machines and equipment and to track the operations. They are also expected to record and document the performance of the equipment. Sationary Engineers should know how to test the quality of the machines' outputs. This would help them manage the equipment.
The assistant chief engineer works under the direct supervision of the chief engineer. Most of the chief engineer's responsibilities are given to the assistant, such as delegating employees for different tasks, inspect plans and blueprints, conduct determinations of various engineering projects, and provide reports and status updates of each. An assistant chief engineer's job is vital for any engineering project, and high organizational skills are required. Alongside this, the assistant must have competent knowledge in all relevant fields of engineering.
Stationary engineers and assistant chief engineers have different pay scales, as shown below.
| Stationary Engineer | Assistant Chief Engineer | |
| Average salary | $69,163 | $93,642 |
| Salary range | Between $44,000 And $107,000 | Between $63,000 And $139,000 |
| Highest paying City | Santa Rosa, CA | San Francisco, CA |
| Highest paying state | New York | California |
| Best paying company | UCSF Benioff Children's Hospital | BGC Partners |
| Best paying industry | Health Care | Technology |
There are a few differences between a stationary engineer and an assistant chief engineer in terms of educational background:
| Stationary Engineer | Assistant Chief Engineer | |
| Most common degree | Associate Degree, 35% | Bachelor's Degree, 37% |
| Most common major | Heating And Air Conditioning | Electrical Engineering |
| Most common college | - | SUNY College of Technology at Alfred |
Here are the differences between stationary engineers' and assistant chief engineers' demographics:
| Stationary Engineer | Assistant Chief Engineer | |
| Average age | 50 | 49 |
| Gender ratio | Male, 97.0% Female, 3.0% | Male, 96.0% Female, 4.0% |
| Race ratio | Black or African American, 11.0% Unknown, 4.5% Hispanic or Latino, 17.4% Asian, 7.6% White, 59.1% American Indian and Alaska Native, 0.5% | Black or African American, 8.2% Unknown, 4.5% Hispanic or Latino, 15.6% Asian, 2.1% White, 68.4% American Indian and Alaska Native, 1.2% |
| LGBT Percentage | 4% | 4% |