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TRUSTED BY STOW, MA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon32
    Verified energy efficiency auditing services reviews

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

Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Energy Audit - For BusinessHome Energy Audit

Serving Stow, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I whole heartedly recommend Airco. Their team was experienced, skillful, friendly and professional throughout the duration of this job, from Joe's first visit to my home to discuss air conditioning options to Derek and Cam's final touches on the duct system. I had complete confidence in them, as well as in Steve, Danny, Frank and Patrick. Additionally, Airco's connections to MassSave and Commerce Bank meant financing and payment options to suit my budget. No more hauling loud and heavy window a.c. units up from the basement. Instead, I am enjoying consistent cooling throughout my home with no noise whatsoever. I am a very happy customer!"
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+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Gabriel Hahn
Gabriel Hahn
New to Angi
Home Energy Audit

Serving Stow, 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.

Avatar for The Energy Monster MA, Inc.
The Energy Monster MA, Inc.
4.2(
14
)
Home Energy Audit

Serving Stow, MA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"They were good on installing insulation but were terrible in completely and correctly replacing the vinyl siding they removed to do it. There scheduling and communication around scheduling was poor."
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 Stow, 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 Stow, 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
Dr. Energy Saver
3.1(
23
)
Home Energy Audit

Serving Stow, MA and surrounding areas

In business since 1994

Free estimates

Warranties offered

"My project has not started and is scheduled for middle of May. My rating at this time is for the overall interest shown from the beginning. Examples, I was immediately contacted to set up an appointment to review my project. This lasted two hours going over everything from top to bottom. Included was what is called a blower door energy audit. Plus other devices used to show where much energy was being lost/wasted. A lot of effort and feedback was provided many situations were pointed out to me in order that the job be completed professionally."
 Almost Done
Our double contoured Window
 Sunrise Replacement Windows
 The old window that was Leaking Air
 Here's a closer look at the SuperDeck and how it

+24

Recommended by83%of homeowners
Showing 1-10 of 26
Energy Efficiency Auditing FAQs, answered by experts

Costs depend on pipe length, accessibility, and whether additional services are required.

Leaving vents open but closing doors in unused rooms will probably not save money on your energy bill. Closed doors prevent the natural flow of air throughout the home, which could reduce the efficiency of the overall HVAC system. They could also restrict airflow into and through the return vents, making the HVAC system less efficient.

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.

R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.

Motion-sensor lights use one watt while on standby and five watts while turned on. They’re usually on for one hour over a 24-hour period, bringing the total wattage to about 28 watts per day. LED lights use around 6.5 to 8 watts while on. If you leave an LED light on all night, with night ranging from 10 to 14 hours, you’re looking at using 65 to 112 watts a night. You can minimally cut your wattage in half by switching to a motion-sensor light.

The Stow, 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.