Energy Audit

Services in Southern & Coastal Maine

Energy Audit

Services in Southern & Coastal Maine

Ever wonder why your home still feels cold even when the heat is on? Or why your energy bills keep climbing?

As one of the leading energy audit companies in Maine, we can help you uncover hidden leaks, drafts, and insulation gaps, helping you create a more comfortable, healthy, and energy efficient home.

Energy Audit

Using advanced tools like blower door testing and thermal imaging, we pinpoint areas of energy loss, moisture problems, and inefficiencies. Whether you’re dealing with ice dams, temperature swings, or musty basement odors, an energy audit will give you clear answers.

With the information from your Maine home energy audit, we’ll outline a pathway toward services that will help you:

  • Eliminate drafts & cold spots
  • Lower your energy bills
  • Prevent ice dams & moisture issues
  • Improve indoor air quality
  • Make your home better for the environment

Since 2006, Evergreen has performed energy audits on more than 15,000 Maine homes!

Your Step-by-Step Process to a Better Home

  1. Free Consultation
    • We visit your home to discuss your concerns, goals, and comfort issues.
    • Our experts assess whether your home is a good candidate for efficiency upgrades—and if so, we schedule a comprehensive energy audit.
  2. Energy Audit
    • We use high-tech tools like blower doors and thermal cameras to see what your eyes can’t—hidden leaks, insulation gaps, and drafts sucking the warmth right out of your home.
    • In about two hours, we’ll show you exactly where your home is losing energy and what you can do to fix it—no guesswork, just real solutions.
  3. Tailored Improvement Plan
    • When your audit is finished, we’ll review our findings and follow up with an audit report that includes our recommendations on how you can maximize comfort and energy savings.
    • Did you know you could get up to $8,000 in Efficiency Maine rebates for our services? Plus, 0% financing can make upgrades more affordable than ever. We’ll guide you through every step to help you maximize savings.
  4. Free Test-Out After Work is Completed
    • After your home upgrades are made, we’ll test again to confirm that all improvements meet our high standards and gather the data we need to process your Efficiency Maine rebate application.
    • You’ll feel the difference—fewer drafts, lower bills, and a home that stays comfortable year-round.
Using a thermal imaging device in a child's bedroom to look for cold spots and air leakage

After the energy audit and our interview with you is complete, we’ll provide a list of our recommendations for services including:

Insulation

Improve indoor comfort while lowering heating and cooling bills.

Learn More

Basement Waterproofing

Prevent moisture issues, mold growth, and energy waste.

Learn More

Maine’s Trusted Home Insulation Company Near You

BPI Certified professional logo for Evergreen Home Performance in Portland & Rockland, Maine

BPI

We have more Building Performance Institute-certified professionals on our team than any other company in Maine.

Efficiency Maine Residential Registered Vendor Logo

Efficiency Maine

We helped more homeowners receive Efficiency Maine rebates for insulation than any other contractor in 2024!

You deserve a better home—so let’s uncover hidden issues, fix what’s broken, and create the cozy, efficient space you’ve always wanted.

Schedule your free consult with Evergreen Home Performance today.

Is your home leaking energy? Let’s find out where.

BOOK YOUR FREE CONSULT TODAY

I had gotten estimates from several other companies, but Evergreen was in another league entirely with their professionalism. If you want the job done correctly, I couldn't recommend this company enough.

Rayna Mayo

Freeport

Evergreen did everything they said they would and more. I actually don't mind going into the basement now since they sealed it. The air quality in the house is noticeably better and it's warmer in the winter. We can even store clothing down there where before, whatever was in there would mildew. Even the spider population declined! I used to vacuum so many of them from the corners of the ceilings in the house. Not any more!

Loriel Van Dusen

Working with Evergreen was a dream! Professional, knowledgeable, and super clean work. Communication was fast and service impeccable. The bedroom floors in our 1960's split ranch will be warm with the new insulation between them and the garage. Bring on the snow! (not really, but sort of)

Jess Dee Proctor

I was extremely pleased with the professionalism and quality of service that I received from the Evergreen team. I met Richard to discuss options for insulation. I knew immediately that I wanted to do business with them because he did not try to over-sell extra services that I did not need. Dave was the project manager. He was not only kind, but very respectful of my home. I would highly recommend this company.

Darlyann M

Bath

Several years ago Brian Robinson evaluated the crawl space at my summer home on Islesboro where I knew moisture was becoming a problem. I had done quite a bit of work in the space many years prior with mixed results. When Brian offered some suggestions, they were ideas that incorporated work previously done, and would be a relatively low cost effort to improve the situation. He offered this advice over several phone conversations of some length, informally, and at no charge.

Cliff R.

Islesboro

The team members were very professional, worked very hard, paid very close attention to detail and cleaned up meticulously every day. I really appreciated the care they took knowing the smallest details were going to make a big difference to our heating bills. Thank you!

Pam B.

Brunswick

We couldn't be more pleased with the easy, professional, high-value service from Evergreen. Having purchased an older home that had been in our family for generations, we needed multiple upgrades, including insulation throughout. Evergreen insulated our attic with blown-in cellulose, built a new, super-insulated attic hatch, sealed off the old one (which was just a piece of plywood in a closet ceiling), and also talked us through our best options to upgrade our heating system given the plans we have to add onto the house.

Tom G.

South Thomaston

I cannot say enough great things about working with Evergreen Home Performance. Everything including the initial consultation, the fabulous work crew, the office support and the final resolution was handled in a caring and professional manner. My only regret is that I did not know about them earlier. I enthusiastically recommend Evergreen to anyone with concerns about home energy use.

Darlene R

Bath

Update 12/2018: Evergreen has completed Phase II of my house (insulating and installing air/moisture barrier on exterior walls, replacing old windows) and now that heating season is upon us, the difference is astonishing. The house is tight as a drum and so easy to keep warm. Worth every penny. Thank you all! Working with Evergreen was a positive experience from start (no charge energy audit) to finish (a MUCH more comfortable home). Brian Robinson spent a lot of time with me on the audit, explaining clearly what he was finding in my ca.

Rebekah W.

Rockport

We had Evergreen redo the insulation in our roof. The team handling our project did a great job. They left the house spotless. We've already noticed the difference in how much better our house is retaining heat. I would definitely recommend and will use them for future projects.

Ffej C.

South Portland

We needed basement encapsulation to stop moisture coming up into the house from our regularly flooding basement. We had mold growing on windowsills and furniture. All the staff were friendly, respectful of our home, and easy to work with. Humidity has gone from 70% down to 40% and mold has not grown back after two months. Very grateful.

Sarah C.

Belfast

Evergreen Home Performance shows its expertise from start to finish. Evergreen did three house projects in winter/spring/summer 2020 for me, attic insulation, crawl space under a porch insulation, and basement foam/vapor barrier. From my initial discussion with Bryan, I understood the reasons for choosing different types of insulation, the associated costs, and time estimates. Evergreen scheduled in advance, came when they said they would, and the crews were highly professional in their work and demeanor.

Iris S.

Portland

Evergreen did a fantastic job replacing 28 windows in our house. They were friendly, courteous, and very detail oriented. Brian did a great job planning, estimating and executing the project. Our energy use has dropped significantly since the work was done.

Alex B.

Kittery

We just finished a large project of air sealing and reinsulating our 1890s basement and attic which had been completely renovated 8 years ago but still felt cold and lacked proper energy assessment and corrections. We met with Justin in December and were very impressed with his knowledge, professionalism and communication skills and knew Evergreen was who we wanted to work with. Dave was our on hands project manager and was excellent. The office staff has been quick to respond and helpful as well when needed.

Emily Gallant

Evergreen removed and replaced the insulation in my attic. They did a great job!, Crew was excellent, and the whole thing went smoothly, and the attic was NOT easy to get into or work in, so kudos to some hard work done well!

Joel A.

Portland

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