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Mini Split Installation

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.

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Let’s Make Home Comfort Simple
Got questions or ready to get started? Just share a few quick details — our team is here to help you find the perfect solution, no pressure.
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What Local Homeowners Are Saying

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

Before any home upgrade or repair I do a ton of research, and estimates way beyond the average. As any home owner you try your best not to get taken in any way. After months of research and estimates I found these folks at SumZero. I was more impressed with their motivation to try to get me the best deal, as hassle free as it can be install, and definitely the service after the fact. They went out of their way to help me with the process with MASS Save, and any other discounts I could possibly be entitled to, which for me was the deal maker. Secondly, the products, they gave me a bunch to choose from, all the selections were brand names that we can trust and are high quality. After my estimates I took that information and looked up each one and was very pleased with the options they could do. All top notch pieces of equipment with great reviews. So We decided to give them the job, and boy did we do the right thing. Install took a day, they were very good, and cleaned up the mess before leaving, it was a very large project. No complaints. once the system was installed we immediately seen a difference in our utility bills. What a difference! Lastly, we had 2 small problems in the weeks to come and SumZero came out promptly, and addressed my concerns right away. They even had to replace the air filtration system. wasnt SumZero's fault. Just happen to be the first customer to have a defective one from their company. Within a couple of days they came back and replaced it. During all of this from start to finish, everyone I dealt with was super awesome, friendly, and got the answers i needed in a very quickly and professionally. I am not the type to write reviews very often, but these guys deserve it. They want to be a bigger company, they are highly motivated, and they want you to be happy. Thats becoming pretty rare these days in my opinion. These guys at the very least deserve a chance at your business. Dont be worried about getting plenty of estimates, you will quickly see a pattern, and the have SumZero give you an estimate and you will see what I mean.
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Not Sure Where to Start? We’ll Guide You

Let our experts design the right heating and cooling solution—customized for your comfort, your layout, and your energy goals. No pressure. Just clarity.

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