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:

Receive Up to $250 When You
Refer a Friend!

When your referred friend completes an installation over $6,000 you both will receive a $250 gift card.

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.

The Ultimate Ductless HVAC Glossary

The Ultimate Ductless HVAC Glossary

Explore our ultimate ductless HVAC glossary to get the lowdown on all the important terms you need to know about mini split heating and cooling ...
Boston Metro Ductless AC Case Studies

Boston Metro Ductless AC Case Studies

Browse N.E.T.R.’s ductless AC case studies in the Boston Metro area and see how you can get reliable mini split air conditioning for your home ...
75 MORE Benefits of Switching to Ductless

75 MORE Benefits of Switching to Ductless

Discover 75 MORE ductless benefits and learn about how switching to ductless HVAC can revolutionize the way you heat and cool your space ...
Ductless System vs Central Air Conditioning

Ductless System vs Central Air Conditioning (podcast)

Discover the advantages of ductless heating and cooling systems with Jesse Corso from N.E.T.R., Inc. Learn about installation, efficiency, and maintenance ...
Ductless Systems vs Window AC Units

Ductless Systems vs Window AC Units (Podcast)

Discover the advantages of ductless heating and cooling systems with Jesse Corso from N.E.T.R., Inc. Learn about installation, efficiency, and maintenance ...
Sizing a Ductless System for Your Home

Sizing a Ductless System for Your Home (Podcast)

Discover the advantages of ductless heating and cooling systems with Jesse Corso from N.E.T.R., Inc. Learn about installation, efficiency, and maintenance ...

Schedule an Emergency Service

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