Life at SumZero

Real Work. Real People. Real Purpose.

At SumZero, we don’t just build high-performance HVAC systems — we build careers with meaning.

When you step onto our team, you’re joining a crew that works hard, looks out for one another, and holds itself to a higher standard. This isn’t just a job. It’s a place where your growth matters, your ideas count, and the people beside you are serious about doing work they’re proud of.

We Show Up With Purpose

Whether it’s a toolbox talk at 6:30 a.m. or a clean install that wraps at 5:00 p.m., our day starts with intention and ends with execution.

We gather often — not just to share updates, but to celebrate wins, align around goals, and stay rooted in our values. That means:

  • Monthly team meetings
  • Summer BBQs and shared meals
  • Recognition ceremonies for teammates who go the extra mile
  • Corporate breakfasts, birthdays, and laughs in the breakroom

We work hard — but we don’t forget to look up, connect, and celebrate along the way.

We Grow People, Not Just Roles

Growth isn’t a buzzword here. It’s a commitment — built into the way we coach, review, and promote from within.

We offer:

  • Weekly check-ins with leaders who care about your goals
  • 1:1 mentorship for both technical and personal development
  • Regular performance reviews that actually mean something
  • Training beyond tools — including leadership, communication, and mindset

Whether you want to lead a crew, design systems, or master your craft — you’ll never be left to figure it out alone.

You grow. We grow. It’s that simple.

Recognition That Reflects the Work You Actually Do

We see the quiet wins — the tough calls, the early starts, the long drives, the one-percent-better days.

And we celebrate them.

  • Hero of the Month: for teammates who show integrity, grit, and care
  • Crew of the Month: for field teams who perform with excellence and unity
  • Public shoutouts, Slack praise, and peer-nominated awards

Because this work is hard. And it deserves to be seen.

A Mission Bigger Than Ourselves

We believe success isn’t just about what you do on the job — it’s about what you build around you.

That’s why we:

  • Sponsor school events like the local Jog-a-Thon
  • Show up in person to cheer kids on
  • Support causes that matter to our teammates and their families

At SumZero, we’re not chasing flashy growth. We’re building a stable, sustainable company that people are proud to work for — and proud to recommend to their neighbors.

What Local Homeowners Are Saying

See how SumZero has helped local homeowners stay comfortable year-round with energy-efficient heat pump solutions.

Over-the-top outstanding communication with company throughout process. In this area, never seen anything like it from contractors. They mostly setup masssaves heat loan for me: as much as they can, and were patient, attentive as I waited on that process. They even encouraged it (if that’s what I wanted.) NO other company among 4 competitors did that. Do your homework, see pictures, you’ll see this co. does neat and tidy work, and their technical expertise seems to match that. I’m actually proud that we found and picked them, for my part. In the end, still work done by contractors, so important to know what people typically find wrong with type of work you’re having done, and keep an eye out for those things. The few small details I pointed out, sum zero guys were all over it, no pushback. And…they are ahead of the game in that area too: they have experience and have clearly learned from it. The could explain why they recommend what they recommend based on customer feedback. They are very cutting edge in AC tech., materials, smart home tech., communication with customer—customer service in general. Everyone was on the same page with that. As of May 2022, this is a company that seems to be in a good place doing good business. I prioritize capability over “nice gals/guys,” but worth mentioning that they have people skills. Especially young guy that assessed and did sales end—really bright. So, this is genuine, I feel like they went far enough to be worth my time writing a review. Recommended.
DJ Worcester