About Us

We’re not your typical contractor. Green Team LI was founded by engineers, architects and builders. We offer homeowners modern, science-based energy evaluations that can drastically improve the comfort, efficiency, and health of your home. 

Whether you’re looking to improve your home’s efficiency with insulation and air sealing or want a high-performance heating & cooling system, Green Team LI is here to help. Our services include:

Qualified Home Performance Contractors 

Green Team LI takes a whole-home approach to finding reliable solutions that will have the greatest impact on your energy bills, comfort, and indoor air quality. We’re fully licensed and insured and our team holds several building science certifications, including:

  • Certified Energy Auditors
  • Licensed and Insured
  • BPI Certified Gold Star Contractor
  • Diamond Mitsubishi Electric Dealer
  • NABCEP Certified
  • EPA Lead Safe Certified
  • NYSERDA Accredited 
  • PSEG-Long Island Accredited 
  • Air Conditioning Contractors of America (ACCA) Members
  • ConEd Accredited 
  • BBB A+ rated
  • 4.8 Google review rating

Greater New York’s Home Efficiency Incentive Experts 

There are several tax credit and rebate programs available to NY residents to help make upgrading your home more affordable. Not only does Green Team LI stay up to date on the availability and requirements for these programs, but we’re also a participating contractor with NYSERDA, PSEG Long Island, and more. This means that we can give you access to thousands in savings.

From the Inflation Reduction Act tax credits to local utility rebates, Green Team LI can help you SAVE BIG on improving your home!

It All Starts with an Energy Audit of Your Home

At Green Team LI, we start every project with an energy audit, which is an in-depth analysis of your home’s performance. This gives us an opportunity to get to know your home, and your energy saving goals, and build a customized solution to meet your specific needs.

During an energy audit, we’ll run several tests to discover:

  • Areas of poor insulation and air leakage
  • Inefficient heating & cooling
  • Solar potential
  • And so much more!

Ready to take the plunge and upgrade your home?

Apply for your free home energy assessment. Call 844-370-3322 or contact us online to get started. 

Mitsubishi Diamond Elite Contractor logo
Energy Star Award 2023

Qualified home performance contractors

Get started with Green Team LI today

844-370-3322
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Green Team LI is proud to be the national winner of Energy Star’s Contractor of the Year, four years in a row

Find out what actual Green Team LI customers have to say about us:

I signed up for an audit at the Smithtown Day festival. They came and did the audit and were very nice. They insulated my attic and changed all my light bulbs. I can’t wait to see my savings this winter.

Tina
St. James

I must admit that when I completed the LIPA energy audit and found out that an outside company will be doing the audit, I was skeptical. But, as an energy conscious consumer I kept an open mind. My doubts dissapeared from the first contact with your company.I am a businessman ... Read More

Zev
East Northport

This company is efficient and professional. Working with everyone involved was a pleasure.

Rose-Marie
Huntington NY

The workmen were very neat and precise. I was very satisfied. My heating bill is lower by 25%.

Shirlee
East Northport NY

Green Team LI can help you save big on all your home projects

With all of the rebates and incentives available to New York residents, upgrading the energy efficiency of your home has never been more affordable. From tax and utility incentives to state-subsidized low interest financing, Green Team LI can help you qualify for home performance savings.

Green Team LI Can Help You

Save big

On Your Efficiency Project