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The Day-to-Day Scope Commercial Preventative Maintenance:

Execute thorough maintenance across commercial rooftop units (RTUs), unit heaters, split systems, make-up air units, and exhaust fans (inspecting electrical components, checking belt tension/sheaves, evaluating airflow, and verifying heating/cooling cycles).

Light Diagnostics & Service:

Perform initial troubleshooting on basic mechanical and electrical faults across light commercial equipment, coordinating with senior commercial techs when advanced diagnostic needs arise.

Residential Service Support:

Leverage your residential background to run diagnostic, repair, and seasonal tune-up calls on residential split systems, heat pumps, and furnaces during peak demand periods.

Customer & Site Communication:

Clearly communicate equipment status, safety concerns, and recommended repairs to facility managers, building superintendents, and homeowners.

Field Documentation & Safety:

Keep mechanical rooms, basements, and roof workspaces clean and compliant with safety regulations. Log system data, model/serial tags, and detailed service notes through our mobile dispatch system.

Where This Role Leads:

Advanced Commercial & Industrial Systems This position is designed as the direct pipeline into our high-level commercial and industrial service division. As your skills advance, you will receive specialized factory training and lead-tech mentoring to work into:

Precision Equipment Start-Ups:

Commissioning brand-new commercial projects from the ground up to verify baseline static pressures, design airflow, and proper sequence of operation.

Heavy Mechanical Infrastructure:

Servicing and diagnosing chillers, commercial boilers, and large makeup air units (MAUs). Variable Refrigerant Flow (VRF): Setting up, addressing, and executing advanced refrigerant and electrical diagnostics on multi-zone inverter systems. Building Automation (BAS/BMS): Diagnosing digital controllers, low-voltage control loops, network sensors, and centralized building management systems.

Jobsite Technical Leadership:

Coordinating alongside general contractors, facility directors, and other trades on high-profile regional projects.

What We Offer Competitive Pay:

Merit-based hourly compensation reflecting your existing field experience and technical certifications.

Retirement & Wealth Building:

401(k) with company match and company Profit Sharing.

Comprehensive Healthcare:

Excellent medical, dental, and vision options.

Paid Time Off:

Paid holidays and personal vacation package.

Field Support & Equipment:

Well-maintained company service vehicle, uniforms, mobile device/tablet, and continuous manufacturer-backed technical training.

Focused Territory:

Primarily serving Dodge, Washington, and Fond du Lac Counties (with occasional regional project work).

Qualifications Experience:

1-3+ years of professional HVAC field experience, including hands-on exposure to commercial equipment (via maintenance, light service, or commercial install/sheet metal) alongside solid residential service experience.

Licensing:

EPA Universal Certification required.

Driver's License:

Valid driver's license with an insurable, clean driving record.

Safety & Compliance:

High school diploma or GED equivalent; ability to pass a pre-employment drug screen and background check.

Availability:

Full-time (40 hours/week) with standard weekday hours and participation in a rotating on-call schedule. Sure-Fire, Inc. is an Equal Opportunity Employer.

Job Type:

Full-time Pay:

$25.00 - $35.00 per hour

Benefits:

401(k) 401(k) matching Company truck Dental insurance Employee assistance program Employee discount Flexible schedule Fuel card Health insurance Health savings account Life insurance Paid time off Professional development assistance Referral program Retirement plan Tools provided Tuition reimbursement Vision insurance

Education:

High school or equivalent (Required)

Experience:

Commercial HVAC Service:

5 years (Required)

License/Certification:

Driver's License (Required) EPA Refrigeration Certification (Required)

Work Location:

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Find & Apply For HVAC Mechanic / Installer Jobs in Horicon, Wisconsin

Commercial/Residential HVAC Maintenance & Service Technician