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Verified Reviews for Energy Efficiency Auditing pros in Rochester, NH
*The Angi rating for Energy Efficiency Auditing companies in Rochester, 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 Rochester, 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 10, 2025
Find Energy efficiency auditors in Rochester

Infrared Diagnostic LLC
Infrared Diagnostic LLC
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
Seacoast Inspections LLC
Seacoast Inspections LLC
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!

CAL'S AIR CONDITIONING AND HEATING
CAL'S AIR CONDITIONING AND HEATING
Cal's Air Conditioning and Heating. Sole Proprietership, in business since 1994, locally owned and operated, owner Ernest Calderone. Billing-paid upon completion of service or installation.
"Very pleased with the Mitsubishi ductless a/c system Cal's installed. Prompt and professional. Highly recommended."
kim k on August 2018
Cal's Air Conditioning and Heating. Sole Proprietership, in business since 1994, locally owned and operated, owner Ernest Calderone. Billing-paid upon completion of service or installation.
"Very pleased with the Mitsubishi ductless a/c system Cal's installed. Prompt and professional. Highly recommended."
kim k on August 2018

New England Clean Energy
New England Clean Energy
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

A&E AIR CONDITIONING & REFRIGERATION
A&E AIR CONDITIONING & REFRIGERATION
Residential Commercial Installs Refrigeration A/C Installation Ductless A/C services A/C repairs Heater repair Thermostat repair
"Installation was quick and did not encounter any issues. Mr. D’Entremont was friendly and professional. I would definitely call him again for any HVAC services I need."
Sue R on September 2022
Residential Commercial Installs Refrigeration A/C Installation Ductless A/C services A/C repairs Heater repair Thermostat repair
"Installation was quick and did not encounter any issues. Mr. D’Entremont was friendly and professional. I would definitely call him again for any HVAC services I need."
Sue R on September 2022
Downeast Energy
Downeast Energy
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

Yankee Thermal Imaging
Yankee Thermal Imaging
At Yankee Thermal Imaging we utilize an advanced thermal imaging system to detect heat loss and/or cold air influx at your home or commercial property. Once detected, inexpensive measures can often correct such problems, making a dramatic difference in your monthly energy costs.
At Yankee Thermal Imaging we utilize an advanced thermal imaging system to detect heat loss and/or cold air influx at your home or commercial property. Once detected, inexpensive measures can often correct such problems, making a dramatic difference in your monthly energy costs.

Green Home Climate Solutions
Green Home Climate Solutions
We specialize in the installation of high efficiency ductless air conditioning systems. Ductless systems, mini splits, or ductless heat pumps as they can often be referred to are one of the most energy efficient and versatile solutions to both heat and cool your home. By specializing in one area of the HVAC field we provide our customers with the a higher quality of service and expertise during equipment sizing and selection, design, installation and commissioning.
"Wonderful,very professional they do beyond work aside from what we ask them for them do. Supervise disciplines. Cleaned up and untackable always show up never delay."
Victoria O on June 2022
We specialize in the installation of high efficiency ductless air conditioning systems. Ductless systems, mini splits, or ductless heat pumps as they can often be referred to are one of the most energy efficient and versatile solutions to both heat and cool your home. By specializing in one area of the HVAC field we provide our customers with the a higher quality of service and expertise during equipment sizing and selection, design, installation and commissioning.
"Wonderful,very professional they do beyond work aside from what we ask them for them do. Supervise disciplines. Cleaned up and untackable always show up never delay."
Victoria O on June 2022
P Gagnon & Son Inc
P Gagnon & Son Inc
We are a small locally owned home energy company that provides heating oil and propane delivery as well as 24/7/365 Emergency Service to our fuel customers from our team of fully trained and licensed technicians. We also install high efficiency heating equipment to help save you money.
"Their service techs are great but unfortunately that is the only good thing I can say about P Gagnon. Their prices are higher than most other places in the area for both propane and oil, and their office staff are mostly unfriendly (except Debbie). The big problem with P Gagnon is with their sales guy Kent. He is slow to respond to emails and never returns voicemails. He gave me a quote for a small project and after I put down the deposit, he raised the price by more than 40% without anything changing. I asked for a manager to call me to discuss and I never heard from anyone. Still waiting for my deposit to be refunded. I found another local company to do my project instead, and for less than P Gagnon originally quoted me. I strongly recommend you stay away from this company."
Mark L on March 2021
We are a small locally owned home energy company that provides heating oil and propane delivery as well as 24/7/365 Emergency Service to our fuel customers from our team of fully trained and licensed technicians. We also install high efficiency heating equipment to help save you money.
"Their service techs are great but unfortunately that is the only good thing I can say about P Gagnon. Their prices are higher than most other places in the area for both propane and oil, and their office staff are mostly unfriendly (except Debbie). The big problem with P Gagnon is with their sales guy Kent. He is slow to respond to emails and never returns voicemails. He gave me a quote for a small project and after I put down the deposit, he raised the price by more than 40% without anything changing. I asked for a manager to call me to discuss and I never heard from anyone. Still waiting for my deposit to be refunded. I found another local company to do my project instead, and for less than P Gagnon originally quoted me. I strongly recommend you stay away from this company."
Mark L on March 2021
The Rochester, 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.
•Discover the average home energy audit cost, what impacts pricing, and how to save money on your audit. Get transparent, expert-backed cost info for homeowners.

A home energy audit is a detailed write-up of how to lower your utility bills and increase your comfort level. Find out if they’re worth the cost.
•Get a detailed breakdown of thermal imaging home inspection costs, including average prices, cost factors, and tips to help homeowners budget.

Home energy audits can identify ways to make your home more energy-efficient. Learn whether an energy audit is a good investment for your home.
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