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Verified Reviews for Energy Efficiency Auditing pros in South Portland, ME

*The Angi rating for Energy Efficiency Auditing companies in South Portland, 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 South Portland, 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 December 13, 2025

Find Energy efficiency auditors in South Portland

Avatar for Seacoast Inspections LLC

Seacoast Inspections LLC

4.93(
71
)

Seacoast Inspections LLC

4.93(
71
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Licensed Home Inspector #698 MA, #107 NH ASHI Certified Inspector #247162, Certified Level II Building Science Thermographer #31162, EDR Certified, Certified WDI Registry Inspector #90113. No Fee guarantee!

Licensed Home Inspector #698 MA, #107 NH ASHI Certified Inspector #247162, Certified Level II Building Science Thermographer #31162, EDR Certified, Certified WDI Registry Inspector #90113. No Fee guarantee!

Avatar for Upright Frameworks

Upright Frameworks

5.00(
10
)

Upright Frameworks

5.00(
10
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Upright Frameworks is a growing company of 17 people, founded by Josh Wojcik and supported by experienced family and friends. We specialize in new construction-energy efficient structures, energy audits and weatherization.

Upright Frameworks is a growing company of 17 people, founded by Josh Wojcik and supported by experienced family and friends. We specialize in new construction-energy efficient structures, energy audits and weatherization.

Downeast Energy

4.49(
37
)

Downeast Energy

4.49(
37
)
Customers say: Super punctual
117 years of experience

Additional email - [email protected]. Additional DBA - Downeast Energy & Building Supply.

"Highly advise not to use them for any installation jobs. Sloppy work, incorrect with regulator placement and double billed after another experienced technician did the job. Even the experienced technician did a half assed job reconnecting an exhaust vent that he decided to remove to run the gas line which did not need to be removed. cannot get ahold of customer service to discuss or dispute the service bill which then has my oil and gas deliveries on hold. I prepaid for the gas delivery while under dispute and am being double billed. I may just find a more reliable local person as this big time company with small time feelis simply not working out."

Randall R on December 2025

Additional email - [email protected]. Additional DBA - Downeast Energy & Building Supply.

"Highly advise not to use them for any installation jobs. Sloppy work, incorrect with regulator placement and double billed after another experienced technician did the job. Even the experienced technician did a half assed job reconnecting an exhaust vent that he decided to remove to run the gas line which did not need to be removed. cannot get ahold of customer service to discuss or dispute the service bill which then has my oil and gas deliveries on hold. I prepaid for the gas delivery while under dispute and am being double billed. I may just find a more reliable local person as this big time company with small time feelis simply not working out."

Randall R on December 2025

HeatMizer Home Energy Audits

4.89(
9
)

HeatMizer Home Energy Audits

4.89(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

HeatMizer strives not only to meet your expectations, but excel in reducing your home energy costs, saving up to 50%. Initial cost for an audit is $500.00. Blower door diagnostics and thermography image scan performed. Financing and rebates available.

"Great company. Great people. Everything was done perfectly. This company cares."

Don C on July 2022

HeatMizer strives not only to meet your expectations, but excel in reducing your home energy costs, saving up to 50%. Initial cost for an audit is $500.00. Blower door diagnostics and thermography image scan performed. Financing and rebates available.

"Great company. Great people. Everything was done perfectly. This company cares."

Don C on July 2022

Home Snuggers

4.65(
17
)

Home Snuggers

4.65(
17
)
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

Home Snuggers specializes in improving home insulation in Maine and features RetroFoam, the best choice for insulating an existing home. Every home is unique so our estimators determine the best insulation for each and every customer individually. Each area of your home may require a different type of insulation which may be a blown in insulation, spray in insulation, foam insulation, cellulose, or other type of home insulation foam. How do we help you save money? We help you identify the type of insulation that will pay for itself the fastest. RetroFoam, one of our most popular products, works well for homes with poor wall insulation or walls with no insulation at all. RetroFoam is an eco-friendly, nonflammable foam that quickly acts to seal gaps and cracks, keeping precious heat inside on cold days and cool air in summer months. Installation is done from outside so it’s quick, clean, and hassle free. Did you know that, for Maine, foam insulation surpasses fiberglass or cellulose? It also reduces outside noise, stops drafts, and is guaranteed never to settle. Home Snuggers installers are trained professionals who can work on any home and answer all your questions about Maine foam insulation. Our customers will tell you how comfortable, effective, and affordable it can be. Insulation is much more affordable than the rising cost of heating of a poorly insulated house over time. Don’t let a leaky house put a drain on your wallet. Contact Home Snuggers today to arrange for a free estimate.

Home Snuggers specializes in improving home insulation in Maine and features RetroFoam, the best choice for insulating an existing home. Every home is unique so our estimators determine the best insulation for each and every customer individually. Each area of your home may require a different type of insulation which may be a blown in insulation, spray in insulation, foam insulation, cellulose, or other type of home insulation foam. How do we help you save money? We help you identify the type of insulation that will pay for itself the fastest. RetroFoam, one of our most popular products, works well for homes with poor wall insulation or walls with no insulation at all. RetroFoam is an eco-friendly, nonflammable foam that quickly acts to seal gaps and cracks, keeping precious heat inside on cold days and cool air in summer months. Installation is done from outside so it’s quick, clean, and hassle free. Did you know that, for Maine, foam insulation surpasses fiberglass or cellulose? It also reduces outside noise, stops drafts, and is guaranteed never to settle. Home Snuggers installers are trained professionals who can work on any home and answer all your questions about Maine foam insulation. Our customers will tell you how comfortable, effective, and affordable it can be. Insulation is much more affordable than the rising cost of heating of a poorly insulated house over time. Don’t let a leaky house put a drain on your wallet. Contact Home Snuggers today to arrange for a free estimate.

Avatar for Earthlight Energy Solutions

Earthlight Energy Solutions

5.00(
6
)

Earthlight Energy Solutions

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Earthlight Energy Is a full service weatherization and insulation company. We are currently honoring Efficiency Maine and Unitil $1500 Rebates.

Earthlight Energy Is a full service weatherization and insulation company. We are currently honoring Efficiency Maine and Unitil $1500 Rebates.

Evergreen Home Performance

4.80(
5
)

Evergreen Home Performance

4.80(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Evergreen Home Performance makes homes more comfortable and affordable to maintain through energy efficiency audits & contracting. Our team of 22 includes Building Performance Institute-certified Energy Advisors, Project Managers, and Field Technicians, and is dedicated to providing you with excellent results and a pleasant contracting experience.

"It was very good. They were on time and professional."

Richard S on February 2019

Evergreen Home Performance makes homes more comfortable and affordable to maintain through energy efficiency audits & contracting. Our team of 22 includes Building Performance Institute-certified Energy Advisors, Project Managers, and Field Technicians, and is dedicated to providing you with excellent results and a pleasant contracting experience.

"It was very good. They were on time and professional."

Richard S on February 2019

Avatar for HAZELWOOD HANDYMAN

HAZELWOOD HANDYMAN

4.73(
15
)

HAZELWOOD HANDYMAN

4.73(
15
)
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Hazelwood Handyman is a full service handyman, remodeling and property management company. We will do anything from changing a lightbulb to large additions and remodels.

"Hazelwood Handyman was amazing. They were on time, did a great job and came in at the estimated price. One thin guy moved a frig that weighs at least 800 pds- it took 4 movers to put it in place when installed. I was amazed! Highly recommended."

Charles M on February 2019

Hazelwood Handyman is a full service handyman, remodeling and property management company. We will do anything from changing a lightbulb to large additions and remodels.

"Hazelwood Handyman was amazing. They were on time, did a great job and came in at the estimated price. One thin guy moved a frig that weighs at least 800 pds- it took 4 movers to put it in place when installed. I was amazed! Highly recommended."

Charles M on February 2019

Showing 1-10 of 34

FAQs for energy efficiency auditing projects in South Portland, ME

An energy audit costs about $420 on average, ranging from $100 to $2,250, depending on the size of your home, property, location, and the tests the auditor needs to perform. Keep in mind that the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit covers up to $150 of home energy audit costs. Common energy audit tests include:

  • Blower door test: $350

  • Duct testing: $100

  • HERS test: $375

  • HERS certification: $200

  • Infrared imaging: $200

The difference between an energy auditor and a home inspector is primarily in the purpose of the inspection. The energy auditor conducts tests in your home to determine the energy efficiency levels in areas like windows, insulation, and doorways. The auditor then makes recommendations for ways to improve a home’s energy efficiency. 

A home inspector examines various structures of your home to determine that everything is up to code and gauge the condition of features like the roof, foundation, HVAC, and electrical. The home inspector reports on the overall home and makes repair recommendations.

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.

The three levels of home energy audits include:

  • Level 1: Review of your energy bills and home for signs of energy inefficiency and areas for improvement. The average cost range is $0.08 to $0.12 per square foot.

  • Level 2: A level 2 ASHRAE energy audit costs $0.12 and $0.35 per square foot. In-depth analysis of your energy usage and provides a report of cost-saving changes.

  • Level 3: Comprehensive analysis and detailed recommendations for ways to improve your home’s energy efficiency. A level 3 audit costs about $0.36 to $0.50 per square foot.

To find a reputable energy auditor, find a local company that offers energy audit services. Research the company’s reviews, methods, and certifications to find a reliable professional in your area. The most reputable energy audit companies are HEP-certified by the Building Performance Institute (BPI). Be sure to check our state licensing tool to review the local energy auditor guidelines to ensure you’re hiring a certified professional.

The South Portland, 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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