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TRUSTED BY WORCESTER, MA HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon18
    Verified energy efficiency auditing services reviews

Top-Rated Energy efficiency auditors in Worcester - Updated Nov 2026

Avatar for Green Collar
Green Collar
4.6(
37
)
Home Energy AuditEnergy Audit - For Business

Serving Worcester, MA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Fabulous job! We area already see the difference with the insulation through Mass Save about 25%! Mark and his crew were very professional, courteous, and really nice guys. Garrett did a great job with estimating and made the process very easy and recommended additional measures to explore. I highly recommended Green Collar!"
Net and Blow
Ceiling net and blow
Truck in Driveway
Knee Wall Slope 2" Board
Attic Open Blow Cellulose

+2

Response time2 days
Response rate86%
53 neighbors recently requested a quote
Avatar for ENDLESS ENERGY NEW ENGLAND, INC.
ENDLESS ENERGY NEW ENGLAND, INC.
4.7(
20
)
Home Energy AuditEnergy Audit - For Business

Serving Worcester, MA and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

Endless Energy is a trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts with office in Marlborough, Needham, and Randolph. Specializing in Heat Pumps, Central AC, Furnaces, and Boilers, we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation.\n\nWe can help you with: \n*Heating Repairs, Installation, & Service\n*AC Repairs, Installation, & Service\n*Plumbing Repairs, Installation & Service\n*Water Heater Replacement & Service\n*Indoor Air Quality Solutions\n*Ductwork & Line Set Solutions\n*Electrical Panel Upgrades and Replacement\n*Insulation \n*No Cost Home Energy Assessments\n\nA Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

Holliston Heat Pump
Boston Heat Pump
Natick Ducted System
212 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Gabriel Hahn
Gabriel Hahn
New to Angi
Home Energy Audit

Serving Worcester, MA and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Credit card accepted

I conduct energy audit tests for homes, whether they are colonial or brand new construction. I can recommend you various forms of weathersealant, thermal wrappings, and storm window techniques, saving you thousands in the form of long-term heat insulation tech-forward solutions.

AVID Energy Solutions
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Worcester, MA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

AVID Energy Solutions is a team of experts dedicated to helping homes reduce their energy output and monthly utility bills. Based in Methuen and Sutton MA, we work with clients throughout Massachusetts and New Hampshire to find the best possible solutions for their needs and budget. We believe that everyone should have access to affordable, reliable energy efficient solutions, and we are committed to providing that access. Our team is composed of certified energy auditors, professional installers, and friendly customer service representatives who are all committed to providing the highest level of service. We offer a no-cost home assessment to get started, and we work with you every step of the way to ensure that you are getting the most out of your investment. Contact us today to schedule your free home assessment and start saving!

2 neighbors recently requested a quote
Avatar for The Energy Monster, Inc.
The Energy Monster, Inc.
5.0(
6
)
Home Energy Audit

Serving Worcester, MA and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"I needed to replace fiberglass insulation that was anchored under a crawlspace. Energy Monster did an evaluation, told me about the Mass Save program, suggested insulation that would work much better than what I originally contacted them for, and installed new fiberglass and foam board, sealed the edges, and cleaned up afterwards. I'm very happy with the work and will definitely be calling them again next year to add insulation to my attic."
Untitled Gallery 1
Recommended by100%of homeowners
Avatar for Commonwealth Energy MA
Commonwealth Energy MA
4.5(
32
)
Energy Audit - For BusinessHome Energy Audit

Serving Worcester, MA and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Exceptional work done by professionals. They did a great job of making things easy for me as a customer. All the scheduling and communication was on time and clear. I would absolutely Recommend them to anyone looking to upgrade their house to be more energy efficient."
Methuen installation
Methuen installation
Methuen installation
Additional Photos
Additional Photos

+5

Recommended by84%of homeowners
Avatar for HUGH'S ENERGY CONSERVATION
HUGH'S ENERGY CONSERVATION
4.4(
118
)
Energy Audit - For BusinessHome Energy Audit

Serving Worcester, MA and surrounding areas

In business since 1975

Free estimates

Credit card accepted

"From the initial call, the service was excellent! They were prompt in responding and kept us informed of the steps in the process. They made every effort to accommodate our schedule. The workers were prompt, courteous, neat, and thorough. It was a job well-done! We would definitely recommend Hugh's Energy Conservation."
Recommended by93%of homeowners
Avatar for The Energy Monster MA, Inc.
The Energy Monster MA, Inc.
4.2(
14
)
Home Energy Audit

Serving Worcester, MA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"These guys were fantastic! Mike really knows his heat pumps and it showsâ he was always available via email when I had a question, he walked us through the entire process for applying for the state heat pump rebates, and we couldnâ t be happier with the system one year in. Because of our Initial positive experience with Mike, we also hired Energy Monster to do our solar panel installation. Top notch, LOCAL company!"
Mitsubishi Ductless Mini Splits
Holland, MA (5.3KW)
Marlboro,MA (7.8KW)
Energy Audits in MA
Response time2 days
Recommended by100%of homeowners
Showing 1-10 of 29
Energy Efficiency Auditing FAQs, answered by experts

Smart glass doesn’t use a lot of electricity, and you can expect a standard window to add between $1 and $2 per year to your electric bills. Smart glass is proof that energy-efficient windows work. Although your smart windows may consume a little energy to operate, they can save enough energy to offset the costs. If you’re concerned about the minimal bump to your electricity consumption, you can opt for smart tint, which doesn’t require electricity to work.

Blower door tests are measured in a few different ways, but the most popular are air changes per hour (ACH) and cubic feet of air (CFM) moving through the house per hour. A good ACH score is less than 2ACH, but 1ACH is better. This means the house experiences a total air change within 60 minutes (for 1ACH). For 2ACH, there’s a complete change every 30 minutes, and so on. CFM scores are similar in that a lower score means less air change, and therefore less leakage.

After you receive your audit and report, review the findings and determine which of the prescribed changes you want to make to improve your home’s energy efficiency. Start by contacting the type of professionals recommended by the auditor who can help you remedy the issues discovered during the audit. Prioritize the projects by urgency, importance, and budget. Then, gather estimates from several professionals, remembering to verify any necessary licensing and experience information.

There are a couple of ways you can save on the cost of your home energy audit. First, find out if you qualify for programs like the Department of Energy’s Weatherization Assistance Program for low-income households. Next, check with your local utility company to find out if you qualify for any local rebate programs to offset the cost of this helpful service.

Yes, barndominiums are energy-efficient as long as insulation professionals properly install quality insulation, windows, and doors. Utility bills for barndo living can be up to 50% lower than those for a traditional home.  Make your barndo more energy efficient by working with contractors and HVAC professionals to strategically place windows, doors, and heating/cooling systems. 

The Worcester, MA homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.