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Mini Split Installation

Home
Heat Pump
Mini Split System

The Smarter Way to Heat and Cool—Without Ducts

Need powerful, room-by-room comfort without ripping up walls or installing ductwork? Our expert mini split installation services bring you a seamless, energy-efficient solution that works year-round in Massachusetts.

We install mini split heat pump systems that keep you comfortable through sweltering summers and icy winters—with rebates, quiet performance, and flexible zone control.

Why Choose a Ductless Mini Split System?

Whether you're renovating, finishing a basement, or looking for targeted comfort without the cost of central AC, a ductless mini split system gives you:

  • Flexible zoning – control temps room by room
  • No ducts, no mess – ideal for older homes or additions
  • Quick, clean installs – most done in a day
  • Big savings – qualify for Mass Save® rebates and federal tax credits
  • ‍All-season comfort – with built-in heat pump technology

How We Install Mini Split Systems That Work for You

Expert Design + Precision Installation

We don’t just install mini split units—we design them for performance. Our team considers layout, sun exposure, and usage patterns to ensure every zone delivers the comfort you expect.

We Specialize in Mitsubishi Mini Split Solutions

As certified Mitsubishi Electric partners, we install the industry’s most trusted equipment. A Mitsubishi mini split is durable, reliable, and engineered for New England weather—with performance down to -13°F.

Energy Star Mini Split Systems That Save

Every ENERGY STAR mini split we install meets strict energy efficiency guidelines—translating into lower monthly bills, less environmental impact, and eligibility for maximum incentives.

Related Services

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Mini-Split Applications
Mini-Split Ductless
Mini-Split Ducted
Mini-Split Mixed

What Local Homeowners Are Saying

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

The sales rep Paul was exactly what every consultant should be. Which is listening, responding directly and coming up with the best solution for my home. The workers were equally a joy to have over my home as they were very respectful and attentive to everything around them. Shout-out to the crew lead, Wanderson.
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Skynana
Excellent experience with SumZero. I would highly recommend. The entire process from sales to installation to follow-up was exactly what they promised with no surprises. The installation team deserves a special thanks as they were very meticulous, very respectful, and they took pride in doing a top quality job and went out of their way to ensure the customer was completely satisfied. SumZero sells and installs quality products and backs it up with a very knowledgeable team.
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Michael O'Brien
I’ll start off by simply saying my experience with SumZero Energy Systems could not have been better and surpassed all my expectations. My initial consultation with their energy consultant went well and totally inspired my confidence in their ability to get the job done. The price was fair, even a little less than other estimates I received. Paul, my SumZero energy consultant had four separate estimates delivered to me covering various configurations of the mini-split system to me within a day after our meeting. Paul explained the technical side of this technology to me very clearly and made it easy to understand. He also explained the advantages of using the Mass Save energy rebate program to lower installation costs upgrade insulation in my home. The savings through the Mass Save program is amazing. The actual installation of the mini-split system went off without out the slightest problem. The crew showed up promptly on time and got right to work. They were polite, efficient and obviously experts at this process. The were extremely conscientious about laying out taps in the house in their work areas and the the place spotless. They were a stellar crew! My wife and I could not be happier. Now that the warm weather is here I’m taking full advantage of the mini-split system. It’s whisper quiet, super efficient and looks great. The bonus is I don’t have to lug and install the bulky and heavy AC window units ever again. YAY! If the rating system is 1 through 10, with 10 being the best, I’d give SumZero an 11. Look no further, hire SumZero for you mini-split installation. You will not be disappointed.
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David Bradley

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