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Serving all cities and towns within Hampden, Hampshire, Franklin, Berkshire, and Worcester County, Massachusetts
Recover your money with these incentives

75% off insulation work


No-cost air sealing and weatherization work
0% Financing opportunities on energy efficiency upgrades
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Rebates and incentives on heating and cooling equipment


Recover your money with these incentives
75% off insulation work
0% Financing opportunities on energy efficiency upgrades
No-cost air sealing and weatherization work
Rebates and incentives on heating and cooling equipment

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COOL YOUR HOME COMFORTABLY THIS SUMMER WITH MASS SAVE® REBATES
Energy-Efficient Heat Pumps Designed For Massachusetts Summers
Check Your Eligibility

Smarter Comfort: Heat Pumps Backed by Mass Save® Rebates
We know Massachusetts summers can be hot and humid. Modern heat pumps provide reliable, energy-efficient cooling while helping homeowners stay comfortable and reduce energy costs.
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Designed for efficient cooling during hot summer weather
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Provide quiet, consistent comfort
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Helps eliminate hot spots and uneven temperatures
Hear What Our Clients Have to Say
"We recently had Todd Derrick and Brent install some mini splits. They were very respectful, timely, and professional. They cleaned up as they went and even made sure to clean up any dirt tracked in from their shoes. They made sure to ask if we had any questions along the way and showed us how to use the mini splits before leaving. We are very happy with the work that was done and highly recommend Green Collar!"
Amber S. | Springfield, MA
Hear What Our Clients Have to Say
"Jeff, Nick, Wallace, Erin and Tyler took care of weatherizing my home today. They replaced insulation, did part of my basement, did some testing and more, they were THE nicest crew I have seen in a very long time. They were so polite and thoroughly described what they were doing. It’s rare to see an entire crew be that kind and awesome. But I honestly can’t say enough!!!"
Beth M. | Lenox, MA
Offering services throughout Massachusetts
We provide service to all cities and towns within Hampden, Hampshire, Franklin, Berkshire, and Worcester County.
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Your Trusted
Mass Save® Partner
As a participating Independent Installation Contractor in the Mass Save® Program, we perform air sealing, weatherization, and insulation improvements to commercial and residential properties. We work with businesses and homeowners on every step of their project, from setting up the energy assessment to helping them qualify for rebates and incentives to complete the installation. Every step is completed to our customer’s satisfaction and is our team’s number one priority.
What Is the Mass Save® Program?
The Mass Save® Program is an initiative sponsored by Massachusetts’ natural gas and electric utilities and energy efficiency service providers. This program promotes energy efficiency through its wide range of services, rebates and incentives, training, and information. Funds for the program come from a charge on the customer’s utility bill. If you’re already paying into the program, you may as well take advantage of its benefits!
Top-Rated Massachusetts Efficiency Contractor
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48 Lamb St, South Hadley, MA 01075







