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Verified Reviews for Energy Efficiency Auditing pros in Hopkinton, NH

*The Angi rating for Energy Efficiency Auditing companies in Hopkinton, NH 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 Hopkinton, NH 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 Hopkinton

Avatar for ABC Energy Savers, LLC

ABC Energy Savers, LLC

4.67(
3
)
•Approved Pro

ABC Energy Savers, LLC

4.67(
3
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

ABC Energy Savers offers independent energy consulting on your home. Unlike an insulation company just wanting you to add insulation or window companies just wanting to sell you new windows. ABC Energy Savers was founded in 2013 by Bob Eldredge, who has years of experience helping 100s of home and small business owners reduce their energy costs and have a more comfortable building. Energy improvements are frequently funded by utility energy programs (pay for 50% of insulation and related energy improvements) and other financial incentives, and the company works hard to make sure you get the rebates and other financial incentives. It all starts with a home energy audit to put together a comprehensive plan to reduce your energy usage and costs, and ensure your home will be healthy and safe.

"Very cooperative and suggested ways to save money"

Peter B on November 2020

ABC Energy Savers offers independent energy consulting on your home. Unlike an insulation company just wanting you to add insulation or window companies just wanting to sell you new windows. ABC Energy Savers was founded in 2013 by Bob Eldredge, who has years of experience helping 100s of home and small business owners reduce their energy costs and have a more comfortable building. Energy improvements are frequently funded by utility energy programs (pay for 50% of insulation and related energy improvements) and other financial incentives, and the company works hard to make sure you get the rebates and other financial incentives. It all starts with a home energy audit to put together a comprehensive plan to reduce your energy usage and costs, and ensure your home will be healthy and safe.

"Very cooperative and suggested ways to save money"

Peter B on November 2020

Avatar for Clayton Home Inspection Inc

Clayton Home Inspection Inc

4.99(
82
)

Clayton Home Inspection Inc

4.99(
82
)
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

We are a full service licensed home inspection company in Massachusetts we have been in business since 1996. Owner operated, no subcontractors. Mass. Home inspectors license #153, Certified ASHI member # 2552071(American Society of Home Inspectors) certified/licensed Massachusetts pest inspector WDI registry certified. Fees quoted are based on multi factors, including property size, age and type of property. Email [email protected]

"Set up an appointment for an initial 10 minute phone call to talk about what we wanted. Tom ended up spending 25 minutes with us and answered a ton of questions. We subsequently set up an appointment for an initial pre-build inspection of the foundation, framing, roof, and windows. Tom was very thorough. He obviously knew his stuff. Pointed out several items that needed addressing before the insulation and walls went up. Couldn’t be happier with the amount of time he spent, how thorough he was and how much he listened to all my stupid questions and answered them in a language that I could understand. We will have him back before the next phase starts and probably a couple more times before we close. Anyone building a house or buying a new home would be wise to hire Tom. Great piece of mind and cheap insurance. Plus, he’s a really nice guy to boot."

John E on September 2024

We are a full service licensed home inspection company in Massachusetts we have been in business since 1996. Owner operated, no subcontractors. Mass. Home inspectors license #153, Certified ASHI member # 2552071(American Society of Home Inspectors) certified/licensed Massachusetts pest inspector WDI registry certified. Fees quoted are based on multi factors, including property size, age and type of property. Email [email protected]

"Set up an appointment for an initial 10 minute phone call to talk about what we wanted. Tom ended up spending 25 minutes with us and answered a ton of questions. We subsequently set up an appointment for an initial pre-build inspection of the foundation, framing, roof, and windows. Tom was very thorough. He obviously knew his stuff. Pointed out several items that needed addressing before the insulation and walls went up. Couldn’t be happier with the amount of time he spent, how thorough he was and how much he listened to all my stupid questions and answered them in a language that I could understand. We will have him back before the next phase starts and probably a couple more times before we close. Anyone building a house or buying a new home would be wise to hire Tom. Great piece of mind and cheap insurance. Plus, he’s a really nice guy to boot."

John E on September 2024

Avatar for Infrared Diagnostic LLC

Infrared Diagnostic LLC

5.00(
48
)

Infrared Diagnostic LLC

5.00(
48
)
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

HERS rater providing energy audit and infrared building diagnostic to home owners, home buyers and commercial properties. Service include Infrared scan, Blower Door leak testing and Duct Blaster leak testing. We perform our inspections and structure our reports with clients needs in mind. The result is a clear, concise report and most importantly a satisfied client! HERS rater service to new home builders, 2012 IECC code HVAC duct leak and blower-door testing Certified RESNET HERS Rater Certified BPI Building Analyst Certified Level 3 Infrared Thermographer Wondering how you can make your home easier on the environment, while simultaneously increasing comfort and lowering energy bills? Our home energy efficiency services can help you accomplish all these goals and more. By analyzing the house as a system and looking at the interrelationships between each of your home's components -- building envelope (insulation, windows, doors, air sealing), combustion equipment (boilers, furnaces, water heaters), etc. -- we're able to identify the key sources of discomfort, indoor air quality, and energy waste in your home. We're then able to target the areas with the greatest return on investment so you get the greatest home improvement for the best value. Other infrared services are: Infrared electric system panel hot spot scan. Infrared flat roof scan for moisture damage. Infrared ratiant floor heat and plumbing scan.

"Infrared Diagnostics is an independent Energy Auditing company. Flemming is great to work with because he's a consummate professional at what he does. Very knowledgeable about building energy issues and in my case I needed an expert I could trust to tell me what I needed and to prove it with science. Flemming did exactly that by providing me with an infrared scan to show me what and where the problems in my home. With this information, and Flemming's recommendations, I can now speak to contractors intelligently and direct them to perform the work that I need done to make sure that the problems are resolved and the job is done as efficiently as possible in a way that saves me time and money. Thanks for your time and advice on how to resolve the issues Flemming!"

Ron G on February 2020

HERS rater providing energy audit and infrared building diagnostic to home owners, home buyers and commercial properties. Service include Infrared scan, Blower Door leak testing and Duct Blaster leak testing. We perform our inspections and structure our reports with clients needs in mind. The result is a clear, concise report and most importantly a satisfied client! HERS rater service to new home builders, 2012 IECC code HVAC duct leak and blower-door testing Certified RESNET HERS Rater Certified BPI Building Analyst Certified Level 3 Infrared Thermographer Wondering how you can make your home easier on the environment, while simultaneously increasing comfort and lowering energy bills? Our home energy efficiency services can help you accomplish all these goals and more. By analyzing the house as a system and looking at the interrelationships between each of your home's components -- building envelope (insulation, windows, doors, air sealing), combustion equipment (boilers, furnaces, water heaters), etc. -- we're able to identify the key sources of discomfort, indoor air quality, and energy waste in your home. We're then able to target the areas with the greatest return on investment so you get the greatest home improvement for the best value. Other infrared services are: Infrared electric system panel hot spot scan. Infrared flat roof scan for moisture damage. Infrared ratiant floor heat and plumbing scan.

"Infrared Diagnostics is an independent Energy Auditing company. Flemming is great to work with because he's a consummate professional at what he does. Very knowledgeable about building energy issues and in my case I needed an expert I could trust to tell me what I needed and to prove it with science. Flemming did exactly that by providing me with an infrared scan to show me what and where the problems in my home. With this information, and Flemming's recommendations, I can now speak to contractors intelligently and direct them to perform the work that I need done to make sure that the problems are resolved and the job is done as efficiently as possible in a way that saves me time and money. Thanks for your time and advice on how to resolve the issues Flemming!"

Ron G on February 2020

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 New England Clean Energy

New England Clean Energy

5.00(
21
)

New England Clean Energy

5.00(
21
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

New England Clean Energy Inc. designs, installs and services solar electric, battery systems, and provides solar-related services and repair. The company has installed more than 1,200 solar energy systems for homeowners, businesses and nonprofit organizations in New Hampshire, Rhode Island and Massachusetts. Founded in 2006, New England Clean Energy has more positive reviews on SolarReviews.com than any installer in the northeast. Headquartered in Hudson, Mass., the company also has an office in Providence, R.I. and will soon be opening an office in New Hampshire. To see a searchable picture library of some of our work visit https://newenglandcleanenergy.com/residential/photos/ You can search by type of installation, roof type, town or state.

"We consider ourselves very lucky for having chosen New England Clean Energy as our solar installer. From the beginning to the end of the project, NECE was responsive, punctual, helpful and very focused on giving us the best - we always felt they put us, their customer, first. We are very happy customers, secure in the knowledge that no matter what issues may come up with our system, NECE is a phone call or an email away, with courteous, prompt answers. We wholeheartedly recommend them."

Teodros G on January 2019

New England Clean Energy Inc. designs, installs and services solar electric, battery systems, and provides solar-related services and repair. The company has installed more than 1,200 solar energy systems for homeowners, businesses and nonprofit organizations in New Hampshire, Rhode Island and Massachusetts. Founded in 2006, New England Clean Energy has more positive reviews on SolarReviews.com than any installer in the northeast. Headquartered in Hudson, Mass., the company also has an office in Providence, R.I. and will soon be opening an office in New Hampshire. To see a searchable picture library of some of our work visit https://newenglandcleanenergy.com/residential/photos/ You can search by type of installation, roof type, town or state.

"We consider ourselves very lucky for having chosen New England Clean Energy as our solar installer. From the beginning to the end of the project, NECE was responsive, punctual, helpful and very focused on giving us the best - we always felt they put us, their customer, first. We are very happy customers, secure in the knowledge that no matter what issues may come up with our system, NECE is a phone call or an email away, with courteous, prompt answers. We wholeheartedly recommend them."

Teodros G on January 2019

Avatar for Green Energy Consumers Alliance

Green Energy Consumers Alliance

4.86(
42
)

Green Energy Consumers Alliance

4.86(
42
)
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

NON-PROFIT organization. Save on heating oil with local dealers, all year long. Our Heating Oil Service works like a buyers club or co-op for home heating oil and is available to most households in Massachusetts, Rhode Island, and southern New Hampshire. We use the group buying power of our 11,000 members to negotiate a discounted price per gallon with vetted oil dealers every day of the year. How it works: 1. Enroll in the program and pay your annual membership dues ($25 for a basic 1-year membership). 2. Once you’ve enrolled, we pair you up with one of the oil dealers in our network that meets your delivery, payment, and service preferences. 3. Every time you receive a delivery from your new Mass Energy oil dealer, you get the discounted member price per gallon instead of the price they charge their regular customers. That's it! As a bonus, we'll help you save even more on energy by helping you make smart decisions around energy efficiency and renewable energy upgrades. (Formerly doing business in Massachusetts as Mass Energy and in Rhode Island as People's Power & Light.)

"Always pleasant interactions with staff. You can tell that they are proud of what they do and are genuinely invested in the company’s causes."

George S on January 2018

NON-PROFIT organization. Save on heating oil with local dealers, all year long. Our Heating Oil Service works like a buyers club or co-op for home heating oil and is available to most households in Massachusetts, Rhode Island, and southern New Hampshire. We use the group buying power of our 11,000 members to negotiate a discounted price per gallon with vetted oil dealers every day of the year. How it works: 1. Enroll in the program and pay your annual membership dues ($25 for a basic 1-year membership). 2. Once you’ve enrolled, we pair you up with one of the oil dealers in our network that meets your delivery, payment, and service preferences. 3. Every time you receive a delivery from your new Mass Energy oil dealer, you get the discounted member price per gallon instead of the price they charge their regular customers. That's it! As a bonus, we'll help you save even more on energy by helping you make smart decisions around energy efficiency and renewable energy upgrades. (Formerly doing business in Massachusetts as Mass Energy and in Rhode Island as People's Power & Light.)

"Always pleasant interactions with staff. You can tell that they are proud of what they do and are genuinely invested in the company’s causes."

George S on January 2018

Avatar for MacFarlane Energy

MacFarlane Energy

4.62(
133
)

MacFarlane Energy

4.62(
133
)
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Customer convenience is a top priority at MacFarlane Energy. We simplify our customers' lives by serving as a one-stop shop for heating, air conditioning and home comfort. In addition to delivering heating oil and maintaining the equipment in your home or business, we provide virtually every related service: indoor air quality, duct cleaning, conservation advice, home energy audits, replacing water heaters and oil tanks, installation of high-efficiency equipment, plus more. We also install radiant heat, snow-melt systems, pool heaters, solar hot water systems, and geothermal systems.

"Review for Thomas Coolberth on July 5, 2025. Had another leak on the master board of my OB 2000. Thomas installed half a board until the master board could be replaced. There is antifreeze in the water which has to be replaced. Thomas was very friendly, explaining the problem in layman’s terms and; quickly offered a temporary fix of the problem during July 4 th weekend. Highly recommend his service."

Carl G on July 2025

Customer convenience is a top priority at MacFarlane Energy. We simplify our customers' lives by serving as a one-stop shop for heating, air conditioning and home comfort. In addition to delivering heating oil and maintaining the equipment in your home or business, we provide virtually every related service: indoor air quality, duct cleaning, conservation advice, home energy audits, replacing water heaters and oil tanks, installation of high-efficiency equipment, plus more. We also install radiant heat, snow-melt systems, pool heaters, solar hot water systems, and geothermal systems.

"Review for Thomas Coolberth on July 5, 2025. Had another leak on the master board of my OB 2000. Thomas installed half a board until the master board could be replaced. There is antifreeze in the water which has to be replaced. Thomas was very friendly, explaining the problem in layman’s terms and; quickly offered a temporary fix of the problem during July 4 th weekend. Highly recommend his service."

Carl G on July 2025

Avatar for Symphony Home Improvement

Symphony Home Improvement

5.00(
12
)

Symphony Home Improvement

5.00(
12
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

20% off for Angie's List Members!!! We provide expert inspection, consultation, installation and service for Windows and Doors. Our specialty is in Windows and Doors. We have diagnostic equipment and trained experts to determine the solutions to your window problems, as well as recommending products that will serve your needs.

20% off for Angie's List Members!!! We provide expert inspection, consultation, installation and service for Windows and Doors. Our specialty is in Windows and Doors. We have diagnostic equipment and trained experts to determine the solutions to your window problems, as well as recommending products that will serve your needs.

KNOX PLUMBING & HEATING LLC

5.00(
26
)

KNOX PLUMBING & HEATING LLC

5.00(
26
)
Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a family owned and operated full service plumbing and heating company. Licensed and fully insured in both Massachusetts and New Hampshire. We are also BPI certified. We pride ourselves on the quality of our work and stand behind it.

We are a family owned and operated full service plumbing and heating company. Licensed and fully insured in both Massachusetts and New Hampshire. We are also BPI certified. We pride ourselves on the quality of our work and stand behind it.

Avatar for Gassco Inc.

Gassco Inc.

4.82(
38
)

Gassco Inc.

4.82(
38
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

We're a HVAC heating, cooling, plumbing & air conditioning repair & installation service in Dedham, Hydepark, Chestnut Hill, Brookline, Newton, W. Roxbury, Jamaica Plain, Roslindale, Milton

"The whole installation took 3 days. At the end of each day, they cleaned up. They answered all the questions I asked while they were working. They were very professional."

Rumman G on June 2018

We're a HVAC heating, cooling, plumbing & air conditioning repair & installation service in Dedham, Hydepark, Chestnut Hill, Brookline, Newton, W. Roxbury, Jamaica Plain, Roslindale, Milton

"The whole installation took 3 days. At the end of each day, they cleaned up. They answered all the questions I asked while they were working. They were very professional."

Rumman G on June 2018

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FAQs for energy efficiency auditing projects in Hopkinton, NH

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 Hopkinton, NH 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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