What We Do

We are New England’s leading HVAC contractor for Residential Heating and Cooling and Commercial HVAC systems.


Find out how Mitsubishi Electric ductless can transform your living space.



Learn how ductless can keep any commercial space comfortable.


Where We Do It

From Tudors to Colonials to split-level homes and more, we’ve installed ductless HVAC systems in all types of single-family homes, condos, brownstones and apartments in and around the Boston area.

Hear From Our Satisfied Customers:

Featured Services

We are the largest ductless contractor in New England with hundreds of ductless system installations.

N.E.T.R. Inc., in-house staff of certified HVAC/R technicians can install, service and repair your commercial refrigeration systems.

Maintenance Programs

Our highly trained HVAC technicians can maintain, tune up and/or repair your current system, so you can stay warm in the winter and cool in the summer. No sweat, No stress. An HVAC preventative maintenance ensures healthier air, fewer emergencies and a long-lasting system.

HVAC Insights

Explore our Heating and Cooling articles. Make sure to come back soon for more resources as you learn the best ways to heat and cool your home.

Electrical Inspection

Top 5 Benefits of Having an Electrical Inspection on Your Old Boston Home

Learn why electrical inspections are important for Boston homes. Contact N.E.T.R., Inc. today for trusted electrical and HVAC services in Boston, MA ...
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Replacing a Central Air System with a Heat Pump

Replacing a Central Air System with a Heat Pump (Video)

Mike Cappuccio talks about replacing a central air system with a heat pump by utilizing your existing ductwork, but converting it to a ducted heat ...
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Heat Pump Rebates and Financing

Heat Pump Rebates and Financing (Video)

Mike Cappuccio talks about rebates and financing options that are typically available to homeowners through state-run energy agencies and ductless installers ...
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5 DIY HVAC Repairs Gone Wrong

5 DIY HVAC Repairs Gone Wrong

Should you consider doing a DIY HVAC repair to save money? Absolutely not. Here's why and who to call for help installing or maintaining your ...
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Heat Pump Myths

Heat Pump Myths (Video)

Mike Cappuccio talks about common heat pump myths, including that they create their own heat, and that they can’t heat in very cold temperatures ...
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Improve Office Ventilation in Winter

How to Improve Office Ventilation in the Winter

Learn the dangers of poor-quality air in your office building. Learn how to improve your office ventilation with the help of an HVAC expert ...
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Schedule an Emergency Service

We will provide you to with installation, repair or maintenance services that you require, all while providing excellent service.