We're seeking an experienced Boiler Technician to join our field service team. In this role, you'll troubleshoot, repair, and maintain commercial boilers, burners, and water heating systems in commercial and industrial facilities throughout the Chicago area.

This position is ideal for a technician with strong experience working on steam, hydronic, and volume water heating systems, particularly equipment exceeding 2 million BTUs. You'll work independently in the field while being supported by a safety-focused, team-oriented organization.

• Respond to emergency calls involving no heat and no hot water issues.
• Diagnose and repair commercial boilers and volume water heaters.
• Troubleshoot and repair atmospheric and forced-draft burner systems.
• Inspect, maintain, and repair pumps, valves, controls, piping, and related mechanical equipment.
• Perform preventive maintenance to improve system reliability and reduce downtime.
• Wire, configure, and commission commercial boiler control systems.
• Read and interpret wiring diagrams, control schematics, and mechanical drawings.
• Troubleshoot complex electrical, mechanical, and control-related issues.
• Communicate findings and repair recommendations to customers in a professional manner.
• Accurately document service work, parts used, and equipment conditions.

• 5+ years of experience working with:
• Steam boilers
• Hydronic boilers
• Commercial water heating systems
• Experience servicing boiler systems exceeding 2 million BTUs.
• Strong troubleshooting and diagnostic skills.
• Experience repairing atmospheric and forced-draft burners.
• Ability to wire and commission boiler controls and mechanical equipment.
• Knowledge of pumps, valves, controls, plumbing, and mechanical systems.
• Ability to read wiring diagrams and mechanical schematics.
• EPA Universal Certification (or related certifications).
• Strong customer service and communication skills.
• Ability to work independently in a field-service environment.

• Commercial and industrial heating system experience.
• HVAC and mechanical maintenance experience.
• Experience with compressors, plumbing, and facility maintenance.
• Experience implementing preventive maintenance programs.
• Strong commitment to safety and continuous improvement.

You join a stable organization that offers year-round work, typically 41–50 hours per week, providing consistent income and steady field experience.

The company supports your long-term success with annual performance bonus opportunities, a retirement program with a 401(k) and company match, and comprehensive medical, dental, vision, and life insurance benefits.

Work takes place primarily at commercial and industrial customer sites throughout the Chicago area, with a strong focus on field-based service. You travel to customer locations to service boilers, heating systems, pumps, burners, and water heating equipment. The environment is safety-focused and emphasizes a collaborative, team-oriented culture, while still expecting technicians to work independently and make sound decisions in the field. You regularly work around mechanical equipment, controls, and piping systems, following established safety procedures and industry standards throughout your day.

This is a Permanent position based out of Joliet, IL.

The pay range for this position is $83000.00 - $104000.00/yr.

$40-$50/hour $5,000-$15,000 annual bonus potential Medical, dental, vision, and life insurance 401(k) with company match Paid time off Company vehicle, fuel card, uniforms, and tools Paid training and professional development

This is a fully onsite position in Joliet,IL.

This position is anticipated to close on Aug 19, 2026.

Aerotek® Inc. provides staffing and services solutions in manufacturing, logistics, construction, aviation, facilities and maintenance. We provide the expertise, solutions and people required to rise to the challenges of North American industry. Headquartered in Hanover, Md., Aerotek operates a unified network of over 200 offices across North America, supporting more than 18,000 clients each year. Aerotek is an Allegis Group company, the global leader in workforce and business solutions. To learn more, visit: Aerotek.com | 1-888-AEROTEK.

Aerotek offers weekly pay, employee benefits including medical, dental & vision, life insurance, health advocacy and employe