Mitsubishi ductless multi-zone system in Somerville condo.

These Somerville condo owners had a familiar problem in their converted, Victorian-style home. The window air conditioners they relied on to keep cool were noisy, expensive to run, and often unable to keep up with the heat during the increasingly hot and humid summers. This meant the owners were tossing and turning at night due to inadequate cooling and the haunting thought of their electric bills!

They wanted a better solution for their home, so they called NETR after finding we had years of experience, extensive product knowledge, and a library of positive, online reviews.  Our highly rated customer service is the foundation for our ranking as the #1 Elite Diamond Dealer in New England for Mitsubishi Ductless.


Problem: The Family living in a condo in this converted Victorian weren't kept awake at night by the noisy window air conditioners they were using.  They needed a more energy-efficient and cost-effective way to stay comfortable throughout their home.

Solution: We installed a four-zoned of Mitsubishi ductless system that can be individually controlled.  This ensured the family could control their comfort in the dining room and every bedroom, letting them sleep better every day of the year.


Indoor installation of ductless AC wall cassette in Somerville bedroom by NETRWe frequently install ductless units throughout Somerville and the greater Boston area. These systems are an excellent solution for heating and cooling older homes without preexisting ductwork.  In Somerville, there are a lot of older homes, like this one, often turn of the century, converted into condos and multifamily dwellings. This means that each new portion of the home needs to have its own individual HVAC system, that can heat and cool the home as needed.

Many of these older homes have old radiator systems, but few have ductwork or the space required to install it for a central air conditioning system. This dilemma often leaves homeowners trying to get by with window AC units, which use a lot of energy and often do not cool effectively in the mid-summer heat.

We offer an alternative that delivers greater comfort and uses less energy.  The Mitsubishi's Hyper Heat, heat pump system uses inverter technology to deliver both heating and air conditioning through individual wall cassettes, like the one pictured above. This allows us to create individual zones of comfort with each unit controlled separately with a remote.  Now, these owners can get just the comfort they need, right where they need it most.

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For this home, the owners needed four zones- one for each bedroom and the main dining area in the condo.  Each indoor wall unit is individually controlled with a remote, so the master bedroom can be chilly, just the way Mom & Dad like it, while the kids' room can be toasty warm, just the way they like it.  Another benefit to the ductless zoned AC system is that you can shut off units when the zone is not in use, so you can save energy and money by not heating and cooling an empty room!

These ductless units are more efficient at distributing the air evenly across the room than the window units this family had been using.  They also control and monitor the humidity, which can help you not to feel sticky in the summer or end up with dry sinuses in the winter.

Outdoor ductless unit installation for Victorian in Somerville

Best of all, these units are whisper-quiet.  We’ve even had customers install them in offices and recording studios where background noise can be a problem, but these units are quiet enough to go unnoticed. This means every member of the family will be able to get a great night's sleep, and the parents will still be able to hear if their child wakes up in the night and needs them.

Because these units are so energy efficient, the Commonwealth of Massachusetts provides several rebate programs to encourage people to upgrade to more energy-efficient technology. This family saved $400 through the Mass Save program alone, which helped to make this installation more affordable, in addition to the money they will save every month on energy bills.  That something that will make every homeowner sleep better at night!