Our Mission

Our mission is to lead with transparency the adoption of heat pump technology as a whole-home heating and cooling solution.

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At SumZero, we don’t push products. We lead informed, honest conversations about what’s possible, what’s wise, and what’s right for each customer.

‍ Why It Matters

 Electrification is coming fast. But many homeowners still ask:

• Will this work for my whole home?
  
• What happens when it’s below freezing?
  
• Do I have to replace everything?
  
  

Our job is to guide—not sell.

We layer every design with:

• Real home performance data
  
• System capacity and usage profiles
  
• Budget and investment preferences
  
• Customer goals and comfort expectations
  

And if a heat pump isn’t the right choice, we say so.

How We Live the Mission

We Prioritize the Whole Home — When It Makes Sense

We specialize in whole-home heat pump solutions, but we also design partial systems and hybrid setups when it better fits the home’s structure or the homeowner’s goals.

We Customize Every System

Every project starts with Manual J & D load calculations, a detailed home walkthrough, and one-on-one conversation. Cookie-cutter won’t cut it here.

We Tell the Truth

Some homes need insulation first. Others benefit most from dual-fuel

We Educate and Empower

We’ll explain your options clearly and walk you through the “why” behind our recommendations — so you can make a decision you’re proud of.

The Results Speak for Themselves

We’ve helped over 1,800 Massachusetts homeowners take meaningful steps toward electrification.
Some eliminated fossil fuels completely. Others began with hybrid or partial systems.
All worked with a team that leads with integrity and respect.

This Mission Is Ongoing

We’ll keep testing new tech.
We’ll keep improving design tools.
We’ll keep leading the heat pump conversation in Massachusetts — one home, one customer, and one honest recommendation at a time.

Because when you work with SumZero, you’re not just getting a contractor.
You’re joining a mission that’s built on truth, performance, and care.

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