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Best energy efficiency auditors near Mendon, MA

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

Avatar for Gabriel Hahn
Gabriel Hahn
New to Angi
Home Energy Audit

Serving Mendon, 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.

Sustainable Energy Managemnt Group
New to Angi
Energy Audit - For Business

Serving Mendon, MA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

One of the best in terms of reliable Solar work in the area. Established and credible company working with professionals who specialize in things from roof mounted, or parking lot solar electricity, to energy assessments. The President, Cameron, is a strong advocate for all of his clients giving good energy advice that saves money.

Avatar for The Energy Monster, Inc.
The Energy Monster, Inc.
5.0(
6
)
Home Energy Audit

Serving Mendon, MA and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"Great people. They put down cloth to protect the floors from their boots. They tested the house before they started the work. They showed me results and explained them. They did the work, tested the house again and showed me the results again. BIG DIFFERENCE! They cleaned up everything afterwards, showed me and explained everything they had done and told me to call if I ever had any questions. Excellent!!"
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 Mendon, MA and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Words can’t explain how excellent of a consultant Julian is ! I was very indecisive about solar until Julian gave me all the information I needed on behalf of solar while saving me a ton of money. I reffed my whole family to him and if anyone is looking to go solar or get information on solar definitely contact Julian ! his personality is unreal making you feel more like family. I’m glad to be apart of Commonwealth energy !"
Methuen installation
Methuen installation
Methuen installation
Additional Photos
Additional Photos

+5

Recommended by84%of homeowners
Avatar for The Energy Monster MA, Inc.
The Energy Monster MA, Inc.
4.2(
14
)
Home Energy Audit

Serving Mendon, 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
Avatar for Petro Home Services
Petro Home Services
3.9(
165
)
Energy Audit - For BusinessHome Energy Audit

Serving Mendon, MA and surrounding areas

In business since 1903

Emergency services offered

Credit card accepted

"We recently had Walter Haley from Petro Home Services come to our home to do an annual service on our furnace. He explained to us that our chimney was a mess and that he had to shut the hot water off until we got it fixed, no problem. We just had the chimney fixed and Walter came back to finish the initial tune up and we couldn't be happier with his service. This is the 2nd year he has serviced our furnace and he even stayed to make sure the pressure didn't go to high. Walter is a fabulous person and a great face of Petro Home Services. We will be requesting him year after year. Also we are very pleased with Petro overall. Friendly, courteous and very helpful."
Recommended by80%of homeowners
Avatar for American Energy Revolution
American Energy Revolution
5.0(
1
)
Home Energy Audit

Serving Mendon, MA and surrounding areas

In business since 2022

Free estimates

Emergency services offered

American Energy Revolution is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

25 Years Savings
Locked in 25yr kWh rate
Solar panels
Solar panels
Response time8 hrs
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Energy Efficiency Auditing FAQs, answered by experts

Energy-efficient windows are judged on their performance according to a few different factors, including heat transfer, air leakage, light transference, and condensation resistance. If you're unsure whether a window is energy-efficient, look for an ENERGY STAR® label from the U.S. Environmental Protection Agency (EPA). If various products, including windows, meet energy-efficiency standards set by the federal government, the EPA issues this label to help consumers identify energy-efficient products.

Hawaii is currently rated as the most expensive state for utilities. How much are utilities for a house in Hawaii? With electricity costs in Hawaii totaling nearly 42 cents per kilowatt-hour, residents are paying more to run their households than any other residents. Electricity costs in Hawaii are so high, mostly due to the fact that most of the electricity available to residents is produced using oil that must be shipped in from other places.

Depending on the level of audit you choose, a home energy audit will at least include a walk-through of the home to determine visible inefficiencies, but may include testing and a highly detailed inspection and report laying out the home’s inefficiencies and providing recommendations to fix those issues. The audit may also include a review of utility bills and mechanical testing. Consult your home energy auditor about the types of services they provide before hiring.

While many states require all new construction to undergo blower door tests, it’s not a requirement for existing homes. But in both cases, a blower test helps confirm that the contractor has sealed the exterior, that the type of ductwork installed is functioning properly, and that your home is as efficient as possible.

Leaving lights on raises the electric bill, but not as much as having high-wattage light bulbs. The best way to save on electric costs is to swap your light bulbs to LED or CFL bulbs that use far fewer watts. You can also use smart lights and light switches to control usage via a smartphone or voice-controlled device.

The Mendon, 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.