What We Do

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

Residential

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

Install
Heating
Cooling
Ductless
Traditional

Commercial

Learn how ductless can keep any commercial space comfortable.

Install
Refrigeration
Heating
Cooling

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.

Wall Mounted Air Conditioners

Wall Mounted Air Conditioners

Mike discusses wall mounted air conditioners and the difference between old-style through-the-wall AC units and modern ductless air conditioners and heat pumps ...
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Why N.E.T.R. Recommends Mitsubishi Electric Ductless HVAC

Why N.E.T.R. Recommends Mitsubishi Electric Ductless HVAC

Find out why N.E.T.R., Inc. recommends Mitsubishi Electric ductless HVAC over competing brands. Call our Diamond Elite contractors now ...
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Winter Heating

Top Cold Climate Ductless Installation Tips You Need to Know

Learn how ductless installation varies in cold climates. Get help with cold climate ductless installation in Boston from N.E.T.R., Inc ...
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Residential Applications for Air Source Heat Pumps

Residential Applications for Air Source Heat Pumps (Podcast)

Look at all the different ways you can use air source heat pumps in a residential setting. Air source heat pumps or mini splits are ...
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Ductless Mini-Splits for Sunrooms (Podcasts)

Ductless Mini-Splits for Sunrooms (Podcasts)

Sunrooms are often unusable during the hot summer and cold winter months. A ductless air source heat pump makes them comfortable all year long ...
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Ductless Heating and Rising Fuel Prices (Podcast)

Ductless Heating and Rising Fuel Prices (Podcast)

This podcast explains how ductless heating can help to combat rising fuel prices. If you have oil, gas, or propane heating, ductless can help you ...
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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.