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Keep Systems Running.

Help Customers. Grow Your Skills. Wear the Badge Proudly.

At SumZero, we don’t just fix systems — we build professionals. If you’ve got experience in the field and care about the work you leave behind, you’ll find a home here. Our service technicians aren’t just parts-swappers. They’re trusted advisors, system detectives, and the face of our company every time a customer needs us most.
And if you’re newer to the trade? We’ve got a training path for you. Through our Service Apprentice Program, we train you up, equip you, and set clear targets for earning raises and moving up the ladder.

What You’ll Do

  • Respond to service calls and diagnose HVAC system issues
  • Repair and maintain mini-splits, VRF, Hydro-Air, forced hot air systems, and more
  • Perform seasonal tune-ups and preventative maintenance
  • Communicate clearly with customers — explain your findings, earn their trust
  • Offer honest solutions and sell only what you believe in
  • Help homeowners feel confident in their system and their decision to choose SumZero
Hours: FullTime
Location: Holliston, MA
Start Date: As soon as you’re ready

What You'll Get

  • $30–$40/hr starting pay for experienced techs
  • $18/hr starting pay for apprentices with clear growth milestones
  • Company van, uniforms, and tools (or tool reimbursement)
  • Health insurance, paid time off, and Simple IRA retirement contributions
  • A career ladder with written goals, not vague promises
  • Daily support from leadership who’ve walked in your boots
  • A team culture built on mentoring, accountability, and pride

“There’s no egos here. You do great work, they notice. You need help, someone shows up.”
Maurice D., Service Manager

What You Bring

  • 3+ years of experience in HVAC service (or desire to grow into it)
  • Certification from an accredited HVAC program preferred
  • Comfort with low-voltage, ductless, and refrigeration systems
  • Clear, respectful communication skills with customers and teammates
  • A mindset of continuous improvement — in your work and your character

Real Reviews from Customers

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Your Growth Path
See how we train, promote, and coach the right people forward.

No pressure. Just possibilities.

We review every application personally. You’ll hear back from us within 3 business days.

Questions? Email us directly at careers@sumzeroenergy.com