Thermal Imaging & Diagnostics

Thermal Imaging & Diagnostics

Whether you live in a historic farmhouse or a newer build, thermal imaging gives us answers – and gives you a smarter path forward.

You Can’t Fix What You Can’t See

It’s frustrating when your home just doesn’t feel right – and you can’t figure out why. Thermal imaging helps take the guesswork out of home comfort issues by showing what’s happening behind the scenes.

At Evergreen, we often use infrared thermal cameras during the blower door testing part of our home energy audits to detect where your home is losing heat, leaking air, or under-insulated. It’s like getting X-ray vision for your home’s energy performance.

Bedroom Window
Evergreen Team Member Using Infrared Camera In House

How Our Thermal Imaging Services Work

Every surface in your home gives off heat – but our eyes can’t see it. A thermal camera reveals temperature differences across walls, ceilings, windows, and more, helping us detect where insulation is missing or where outside air is sneaking in.

Thermal imaging is frequently bundled with blower door testing because pressurizing the air in your house makes the temperature changes in rooms more obvious as different air is drawn into them, making it easier for us to “see” leaks with the camera.

Depending on the season, we interpret these thermal images differently:

  • In winter, we look for cold spots (blue or green) that show where heat is escaping
  • In summer, we look for warm areas (red, orange, or yellow) where unwanted heat is getting in from the outside or cold spots that point to leaks from your basement or crawlspace
Hot Spots In Roof

What Thermal Imaging Helps Reveal

Air Leaks You Can’t See

Sudden temperature changes in specific areas during the course of blower door testing often mean hidden gaps in framing, plumbing chases, or roof construction. With this info, we target air sealing where it’s needed most.

Attic & Basement Insulation Gaps

Thermal scans show where heat is slipping through the cracks in your home’s most vulnerable areas—like rim joists, crawlspaces, or floorboards.

Damaged or Missing Wall Insulation

We can’t open up your walls—but a thermal camera shows whether insulation is really there, how well it’s performing, and whether upgrades are needed.

Leaky Window Frames

A visual inspection may not reveal poor window installation, but thermal imaging can show where air is sneaking in around the frame.

Thermal Imaging Camera In Bedroom
Thermal Image Of Cold Ceiling

When Thermal Imaging Works Best

Because thermal imaging depends on temperature differences, when it’s close to the same temperature inside and outside your home, our cameras can’t “see” much.

Most homes don’t really need extensive thermal imaging diagnostics to get at the root of the problems, but some do and it can be helpful to schedule inspections during times that optimize temperature difference. For example, on a late spring morning, we’ll ask you to turn on the heat and make your home toasty. Or we’ll schedule for later in the afternoon on a sunny day to allow your attic to heat up.

Why We Use Thermal Imaging at Evergreen

We don’t guess—we measure. That’s what sets Evergreen apart. Thermal imaging is part of our whole-home diagnostic approach, helping us:

  • Design smarter insulation and air sealing upgrades
  • Confirm where energy waste is happening
  • Avoid unnecessary or misdirected work
  • Make sure your comfort and efficiency issues get solved the first time

We combine thermal imaging with tools like blower door testing to provide the most complete understanding of your home’s performance.

Thermal Image Of Heat In Ceiling
Evergreen team sitting around a table with a homeowner reviewing results from Energy Audit

Your Home, Your Plan, Backed by Data

At Evergreen, we don’t just look at symptoms—we get to the source. Your energy audit includes diagnostics like a thermal energy inspection for your Portland or Rockland home. We’ll show you the data, walk you through the results, and guide you through the next steps.

Call 207-594-2244 or book your free consult online to see what thermal imaging can reveal in your home.

See what’s really going on behind your walls—Evergreen’s thermal tools help reveal hidden energy waste.

BOOK YOUR FREE CONSULT TODAY

The folks at Evergreen did a great job fixing a rather major insulation problem in my house, which they helped identify with a great audit. When the work began, they were thorough, upbeat, and -- dare I say it -- efficient. I strongly recommend them.

Michael Williams

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 did a fantastic job insulating our 1930's home. The onsite team was professional, clean, and really just a joy to interact with throughout the process. A blower test at the end showed a significant decrease in air leakage. I highly recommend Evergreen.

Kristen H.

South Portland

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

Our house still the most efficient home we’ve ever lived in. And we have you folks to thank for that! A special howdy to Brian Robinson please!

Bruce O’Donal and Eva Butler

The Evergreen Team did a fabulous job, well exceeding our expectations, In just over a week they transformed our very drafty, noisy 213 year old house into a snug, draft-free, quiet haven with warm floors! The team was prompt, did everything they said they'd do and more. We are thrilled!

Trudy M.

Bridgton

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 energy do blow-in cellulose. I was very happy with the result. They tested with blower-door before and after. House is now MUCH warmer. Also, in the time since when I've had to open walls for various access, I've been impressed with how they got the insulation packed in everywhere. I'd use them again.

Noah

Peaks Island

We initially contacted Evergreen through Efficiency Maine for an energy audit, which was conducted promptly and professionally by Justin McEdward, one of their Energy Advisors who is BPI-certified. After a thorough inspection of our newly purchased home, Justin explained in great detail what we needed and did not need. It was agreed that Evergreen would remove all of the existing attic insulation, which was not adequate, and replace it with blown in cellulose, to a rating of R-60.

Thomas W.

Scarborough

Evergreen was so helpful in securing us Efficiency Maine funding for a big attic insulation project early this winter. They did all of the paperwork, and totally guided us through a vermiculite removal process that included a payment from a trust for the procedure. I could instantly feel the second floor being so much warmer than before. The boiler does not kick on nearly as frequently since they completed the job. It was worth every penny! Brian Robinson was so thorough throughout the whole process including a full walk through after the job had been completed.

Todd W.

Camden

The Evergreen crew from initial inception to installation were professional, on time, and left our place spotless. The end result was exceptional.

John Brown

From beginning to end – that is from the moment Justin McEdward stepped into our home to assess our energy conservation needs until the crew left – the Evergreen Home Performance process went absolutely smoothly. Justin made a thorough inspection and took pictures with an infrared camera. His proposal described the scope of work in detail, and he explained what we could expect the proposed work to accomplish. Our proposal was forthcoming within a couple of days, and Justin was available to discuss it and answer questions.

Adrienne Harkavy

We are so pleased with the work the team from Evergreen Home Performance did in our home. The project included encapsulation of our basement with a reinforced vapor barrier, installation of a sump pump, spray foam insulation on the walls and insulation of the heating duct work. Everyone at Evergreen was friendly and professional. The project was completed on time and in budget. Our home is much cozier and warmer since the project was completed.

Linda Metzger

We are thrilled with the job Evergreen did to transform our 213 year old home into a warm, draft-free, cozy space. The entire team led by Bruce was prompt, courteous, knowledgeable, and hard working. If Evergreen could transform our home in this way, we are sure they would make a comparable difference in YOUR home!

Jonathan M.

Bridgton

Thorough, smart, informative, integrated, and communicative -- that's how my experience was with Evergreen even with the covid interruption midstream. The team picked up where they left off, insulated basement and air sealed attic and knee wall in 100' temps under the eaves! This business group was a pleasure to work with.

Karen W.

Gray

Portland Buy Local
Efficiency Maine
EPA Lead-Safe Certified
Building Performance Association
BPI Certified