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.

Rising Cooling Costs? Your Company’s Leaky Ducts May Be to Blame

Rising Cooling Costs? Your Company’s Leaky Ducts May Be to Blame

Find out if your company's HVAC ducts may be leaking. Learn how to seal leaky ducts & how to get help from an experienced Massachusetts ...
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How Are Commercial HVAC & Residential HVAC Different?

How Are Commercial HVAC & Residential HVAC Different?

Learn the differences between commercial HVAC & residential heating and cooling. Find out what commercial HVAC companies can do to help your business ...
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Outdoor condenser installed for refrigeration system in Lap Corp facility in Westborough, MA.

Which Is Best for Commercial Refrigeration – Indoor or Outdoor Coolers?

Discover commercial refrigeration solutions for your business. Choose between an outdoor walk-in cooler or an indoor commercial cooler to fit your needs ...
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Air Conditioning Unit

How Much Clearance Should My Outdoor AC Unit Have Around It?

Learn how much space you need to have around your outdoor AC unit & what happens if you don't have enough clearance. Get help from ...
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commercial HVAC system

What Is the Best HVAC System for Your Business?

Learn how to choose the best commercial HVAC system for your business. Contact leading heating and cooling specialists N.E.T.R., Inc. today for help ...
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Commercial HVAC

How Does a Commercial HVAC System Work?

Learn why it's crucial to understand how Commercial HVAC system work in order to select the best system for your company's needs ...
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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.