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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

Want to learn more about the areas we serve? Discover our service area and see how close we are to helping you.
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Mini-Split Applications
Mini-Split Ductless
Mini-Split Ducted
Mini-Split Mixed
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.

What Local Homeowners Are Saying

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

My central air conditioning unit died at the beginning of the summer, which prompted me to look into replacing it with a heat pump. After getting quotes from several other contractors, I ended up pulling the trigger with SumZero. My experience has been, overall, positive. I went into this with a lot of information and understanding of heat pump systems, and a good idea of what I was looking for. SumZero was very patient answering my questions, many of which were deeply detailed and in-the-weeds, and they were willing to accommodate my specific choice of heat pump (a Fujitsu VRF system which could work with both the ducted floors of my house AND the basement, which is ductless). The installation itself was painless - the installers were respectful, competent, and professional. The system has performed quite well over the (admittedly mild) winter, and my $10,000 rebate from Mass Save came through. I've had no problem getting through to SumZero when I've had further questions or needed help, and I've since recommended them to neighbors making the switch to a heat pump.
Phéna Proxima
Working with Paul and his team was excellent start to finish. Very professional and responsive. Got 3 heat pumps and they took care of the $10k mass save rebate too. Love it.
Doug Greene
Working with David, Sarai and SumZero was one of the best experiences I've had working with any home renovation comany! We hired SumZero to update our HVAC system with heat pumps. They replaced our existing ducted A/C system and installed supplementary ductless heads to help cover our heating needs. The things that impressed me most about SumZero was: 1. The estimate process. David talked to us about our goals and presented 4 different options are different price points and let us think about it and make adjustments with no pressure and quick responses! 2. Going above and beyond! SumZero completely handled the process of applying for relevant rebates and zero-interest loans offered by the state. They also coordinated removal of our old oil furnace and tank, even though they don't do that themselves! 3. The price was excellent. I got several estimates, and SumZero's price was very fair, and combined with state incentives, made it possible to completely update our system! We have been through the end of one winter and the hottest part of summer, and so far the system is working perfectly and we are very comfortable!
Nate Stender

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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