Green Education

Learn more about the services we provide, their importance and benefits, as well as information on the current energy codes in Massachusetts.

What's a HERS Rating? How does the HERS Index work? Why should my home be HERS Rated?

What is ENERGY STAR? Why should my home be ENERGY STAR certified?

The Massachusetts Stretch Code challenges the states base energy code and is adopted by well over half the states' municipalities. 

IECC specifies certain standards that all building projects must achieve regarding their energy consumption.

Need help meeting the Massachusetts energy code requirements or want to learn more?

329 Massachusetts Ave | Lexington, MA 02420


A9 Green/ Total Green Energy Solution, LLC. 

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Office Hours

Mon    9:00am - 5:00pm

Tue      9:00am - 5:00pm

Wed    9:00am - 5:00pm

Thurs   9:00am - 5:00pm

Fri        9:00am - 5:00pm 

Sat             Closed

Sun            Closed

© 2018 by A9 Green. Proudly created with

A9 Green /
Total Green Energy Solution, LLC

329 Massachusetts Ave | Lexington, MA 02420

781-778-7054 |