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*The Angi rating for Energy Efficiency Auditing companies in Windham, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

*The HomeAdvisor rating for Energy Efficiency Auditing companies in Windham, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

Last update on June 27, 2026

Find Energy efficiency auditors in Windham

Avatar for DH Insulation And Home Performance LLC
DH Insulation And Home Performance LLC
5.0(
5
)
Energy Audit - For BusinessHome Energy Audit

Serving Windham, ME and surrounding areas

Free estimates

"Work was phenomenal, small business owner dave was super courteous and work was professionally done. Answered all my questions. Was very satisfied thanks again dave!"
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Recommended by80%of homeowners
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Avatar for Bryan's Solar Energy Facebook
Bryan's Solar Energy Facebook
5.0(
1
)
Energy Audit - For BusinessHome Energy Audit

Serving Windham, ME and surrounding areas

In business since 2019

Credit card accepted

Offers commercial services

"I had a wonderful experience with this company. They were punctual, very friendly and kind, and clearly knew their business. I would highly recommend them to any homeowner! Great job Team!"
New gas and hot water
new electric
sfter completion
plumbing
Response time12 hrs
Recommended by100%of homeowners
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Avatar for Russells HVAC
Russells HVAC
5.0(
5
)
Energy Audit - For BusinessHome Energy Audit

Serving Windham, ME and surrounding areas

In business since 2018

Free estimates

"Wonderful . Service provider was fast, knowledgeable, honest and we love the heat pumps. One of the best investments we’ve ever made!!"
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+5

Recommended by100%of homeowners
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Avatar for Labyrinth Interior
Labyrinth Interior
4.3(
21
)
Home Energy Audit

Serving Windham, ME and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Called immediately after my inquiry on Home Advisor, at my house the next day, and the project was done the following business day. On time and knowledgeable."
Kitchen Remodel
Kitchen Remodel
Celebrity Kitchen Design/Remodel
Bathroom Design / Remodel
High End Finishes

+19

Response time1 day
Recommended by100%of homeowners
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Energy Efficiency Auditing questions, answered by experts

Electric bills tend to be lower in spring and fall because people use less electricity during these seasons. Milder temperatures allow for less use of heating and cooling, unlike during winter and summer, which usually bring more extreme temperatures.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

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.

Provide utility bills and clear access to all areas of the home, including the attic and basement.

To find a reputable home energy auditor, start by researching local companies that offer the service and check their reviews, methods, and certifications. The most reputable professionals are often Home Energy Professional (HEP)-certified by the Building Performance Institute (BPI). You can also consult the Department of Energy’s certified list of energy auditors or use a state licensing tool to review local guidelines and ensure you are hiring a certified professional for your area.

The Windham, ME homeowners’ guide to energy efficiency auditing services

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

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