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.

Dangerous DIY Electrical Repairs

Dangerous DIY Electrical Repairs to AVOID

Learn which DIY electrical repairs you should avoid. Find out how to get help from N.E.T.R., Inc. with electrical repairs in your home or office ...
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Why You Should Consider a Heat Pump

Why You Should Consider a Heat Pump (Video)

Mike Cappuccio talks about why homeowners should consider heat pumps for a greener way to heat and cool their homes ...
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What Is a Heat Pump and How Does It Work

What Is a Heat Pump and How Does It Work? (Video)

Mike Cappuccio talks about heat pumps and how they work to both cool and heat your home with a high-efficiency, variable inverter ...
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Winter Heating

Winter Heating Tips for First-Time Ductless HVAC Owners

First time ductless HVAC owner? Discover these useful winter heating tips and how N.E.T.R., Inc. can help you keep your heat pump in great condition ...
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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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Schedule an Emergency Service

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