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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 August 21, 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!!"
Additional Photos
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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

Costs depend on the property size, audit complexity, and whether additional testing (e.g., blower door) is included.

You can increase your home’s load factor by replacing fuse boxes with a circuit breaker, hiring a licensed electrician to upgrade your electrical panel, upgrading wiring, or installing subpanels. An electrical inspection by an expert can help determine the state of your current electrical systems and how they can be improved.

Audits include inspecting insulation, HVAC systems, windows, and appliances to identify energy inefficiencies.

Typically, a local home energy auditor is responsible for performing energy audits. A home energy auditor will conduct one of three energy audits designed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to determine the energy efficiency of your home. The auditor often provides analysis that can help guide changes and improvements to your home for better energy efficiency, giving recommendations as necessary.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

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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