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TRUSTED BY HARVARD, MA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon12
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Harvard

Avatar for Modern Energy

Modern Energy

24 Rockdale Street
5.00(
3
)
Approved Pro

Modern Energy

24 Rockdale Street
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
530 local quotes requested

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025


Avatar for Endless Energy

Endless Energy

261 Cedar Hill Street Suite 100
4.87(
15
)
Approved Pro

Endless Energy

261 Cedar Hill Street Suite 100
4.87(
15
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
339 local quotes requested

Endless Energy is the #1 trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts. Specializing in Furnaces, Boilers, and Heat Pumps we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation. We can help you with: *Heating Repairs, Installation, & Service *AC Repairs, Installation, & Service *Plumbing Repairs, Installation & Service *Water Heater Replacement & Service *Indoor Air Quality Solutions *Ductwork & Line Set Solutions *Electrical Panel Upgrades and Replacement *Insulation *No Cost Home Energy Assessments A Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

"Seamless. From the moment of making the appointment with the sales rep to come out to the follow-up phone call, I could not have asked for this installation to go better at a difficult time. They listened to my concerns regarding the look on the outside of the house and the location of units inside. They assisted with all aspects of the Mass Save program making the application process easy. They took care of actual submission of the paperwork where most companies wanted to provide the info to me to then submit."

Jonathan S on July 2020

Endless Energy is the #1 trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts. Specializing in Furnaces, Boilers, and Heat Pumps we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation. We can help you with: *Heating Repairs, Installation, & Service *AC Repairs, Installation, & Service *Plumbing Repairs, Installation & Service *Water Heater Replacement & Service *Indoor Air Quality Solutions *Ductwork & Line Set Solutions *Electrical Panel Upgrades and Replacement *Insulation *No Cost Home Energy Assessments A Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

"Seamless. From the moment of making the appointment with the sales rep to come out to the follow-up phone call, I could not have asked for this installation to go better at a difficult time. They listened to my concerns regarding the look on the outside of the house and the location of units inside. They assisted with all aspects of the Mass Save program making the application process easy. They took care of actual submission of the paperwork where most companies wanted to provide the info to me to then submit."

Jonathan S on July 2020


Avatar for Airco Home Comfort Services LLC

Airco Home Comfort Services LLC

15 Main St
4.70(
30
)
Approved Pro

Airco Home Comfort Services LLC

15 Main St
4.70(
30
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
21 local quotes requested

Specializing in all HVAC/R services to include Geothermal Heating and Cooling. Ground Source Heat Pump services. Additional service area: Chelmsford-Haverhill, Boxford-Gloucester, Manchester-Nashua & Portions Of Downtown. No interest Financing available and all major credit cards accepted. Additional DBA - Airco Heating & Cooling. Additional email - [email protected]. Master Sheet Metal License: 1325 and Master Plumber License: 11593

"Joe, the AirCo sales representative, was very professional. He actually asked for my feedback on priorities for a new boiler. This was important to me because the boiler sits below our family room, and the noise level of the boiler was as issue. His proposals listed several boiler options, based on heating efficiency, which were competitively priced. The installation was run by Steve, who was able to fit in the installation the next week. Steve, and his crews, were punctual and courteous, and the installation went smoothly. It's only been a week, but I am very pleased with my Bosch boiler, the quality of the work, the price paid, and the timeliness of the installation."

David B on November 2018

Specializing in all HVAC/R services to include Geothermal Heating and Cooling. Ground Source Heat Pump services. Additional service area: Chelmsford-Haverhill, Boxford-Gloucester, Manchester-Nashua & Portions Of Downtown. No interest Financing available and all major credit cards accepted. Additional DBA - Airco Heating & Cooling. Additional email - [email protected]. Master Sheet Metal License: 1325 and Master Plumber License: 11593

"Joe, the AirCo sales representative, was very professional. He actually asked for my feedback on priorities for a new boiler. This was important to me because the boiler sits below our family room, and the noise level of the boiler was as issue. His proposals listed several boiler options, based on heating efficiency, which were competitively priced. The installation was run by Steve, who was able to fit in the installation the next week. Steve, and his crews, were punctual and courteous, and the installation went smoothly. It's only been a week, but I am very pleased with my Bosch boiler, the quality of the work, the price paid, and the timeliness of the installation."

David B on November 2018


Edison Energy Consultants

241 Walnut Hill Rd
No reviews yet

Edison Energy Consultants

241 Walnut Hill Rd
No reviews yet
2 years of experience

I believe all people should have a safe, healthy and energy efficient space in which to work, live and call home. I am on a quest to make this a reality for all. I provide: *Residential, business and multifamily building energy consultations. *Solar Education and sales. *Electric bill supplier rate change. *Some handyman services. *Geothermal consultation and installation. I have over 10 years of residential and multifamily energy auditing experience, I am BPI Certified, I have worked as a HERS Rater for new construction and can perform a manual J load calculation for your HVAC systems, especially heat pumps. There's nothing I have not seen in buildings. I am happy to help. Call me and let's discuss your project and what you might need consultations with.

I believe all people should have a safe, healthy and energy efficient space in which to work, live and call home. I am on a quest to make this a reality for all. I provide: *Residential, business and multifamily building energy consultations. *Solar Education and sales. *Electric bill supplier rate change. *Some handyman services. *Geothermal consultation and installation. I have over 10 years of residential and multifamily energy auditing experience, I am BPI Certified, I have worked as a HERS Rater for new construction and can perform a manual J load calculation for your HVAC systems, especially heat pumps. There's nothing I have not seen in buildings. I am happy to help. Call me and let's discuss your project and what you might need consultations with.


Rycor HVAC

130 Southbridge Rd
5.00(
5
)

Rycor HVAC

130 Southbridge Rd
5.00(
5
)
Customers say: Quick response
19 years of experience

The Mini-Split Specialists serving the Worcester area. With more than two decades experience in ductless heating & cooling and 800+ 5-star reviews, RYCOR offers expert advice, top-tier equipment and guidance on how to take advantage of utility rebates and tax credits to lower up-front costs. Our whisper-quiet next-gen heat pumps are a clean and economical comfort solution for any room of the house. RYCOR is a proud Mitsubishi Diamond Elite contractor, offering 12-year warranties and 0% financing. When it comes to mini-splits, we know how!

"Excellent service, from planning to completion a very professional job."

Mark W on May 2024

The Mini-Split Specialists serving the Worcester area. With more than two decades experience in ductless heating & cooling and 800+ 5-star reviews, RYCOR offers expert advice, top-tier equipment and guidance on how to take advantage of utility rebates and tax credits to lower up-front costs. Our whisper-quiet next-gen heat pumps are a clean and economical comfort solution for any room of the house. RYCOR is a proud Mitsubishi Diamond Elite contractor, offering 12-year warranties and 0% financing. When it comes to mini-splits, we know how!

"Excellent service, from planning to completion a very professional job."

Mark W on May 2024


Sunniva Energy LLC

245 Calef Rd Unit 2
No reviews yet

Sunniva Energy LLC

245 Calef Rd Unit 2
No reviews yet
2 years of experience

"We are a dedicated group of solar industry experts collaborating with leaders in the field, united by a mission to inform and educate homeowners about the benefits of solar energy. Informed homeowners are crucial in adopting solar solutions. Through our partnerships, we provide unparalleled value with top-quality materials, excellent workmanship, and competitive prices. Our utmost priority is delivering exceptional customer service, workmanship, and overall value, resulting in a highly satisfied client base."

"We are a dedicated group of solar industry experts collaborating with leaders in the field, united by a mission to inform and educate homeowners about the benefits of solar energy. Informed homeowners are crucial in adopting solar solutions. Through our partnerships, we provide unparalleled value with top-quality materials, excellent workmanship, and competitive prices. Our utmost priority is delivering exceptional customer service, workmanship, and overall value, resulting in a highly satisfied client base."


EcoLifeSolar By SunPower

Based Out Of
5.00(
10
)

EcoLifeSolar By SunPower

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

Solar Panels for residential homes. We help Homeowners save significant money on electric bills and control their energy costs while saving the planet. Serving Massachusetts homes; we will read your bill and let you know immediately how much we can save you monthly. No Money Down! $250 Visa Gift Card upon signing!

"Rob was extremely helpful and personable. Answered my questions that I had in a way that made the process easy to understand."

Joshua C on March 2023

Solar Panels for residential homes. We help Homeowners save significant money on electric bills and control their energy costs while saving the planet. Serving Massachusetts homes; we will read your bill and let you know immediately how much we can save you monthly. No Money Down! $250 Visa Gift Card upon signing!

"Rob was extremely helpful and personable. Answered my questions that I had in a way that made the process easy to understand."

Joshua C on March 2023


Sunrich Power

1 Adams Place
5.00(
16
)

Sunrich Power

1 Adams Place
5.00(
16
)
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Massachusetts’ Trusted solar energy experts, serving Massachusetts since 2018. We provide transparent energy consultations and award-winning solar solutions for home and business. Our expertise includes tailored rooftop solar installation for all roof types, including specialized slate roof. Providing comprehensive financial analysis and ROI projections, multiple ownership options through trusted financial partners. Offering alternative solutions such as community-shared solar, competitive electricity rates, and EV charging solutions for residential, commercial and municipal. With over 2,000 happy Massachusetts customers, we're committed to delivering only the highest-quality products, craftsmanship and service. Sunrich Power delivers energy solutions that work for you—whether it's a tailored rooftop solar project, EV charging solutions, or something simple- Our 'electric bill services” : Highly-competitive electricity rates, or community-shared solar credits for home or business. Contact us today for a hassle-free energy consultation, without pushy salespeople using high pressure sales tactics!

"James Richardson, my sales rep has been excellent throughout the entire process, providing expertise in all areas of the sale, service, banking, product. He has set the right expectations along the way. Unfortunately, Palmetto moved too fast to distance themselves from Sunlight Financial, causing me significant anxiety and distress, ultimately backtracking to get me back on track losing two weeks in my installation."

Jerry H on November 2023

Massachusetts’ Trusted solar energy experts, serving Massachusetts since 2018. We provide transparent energy consultations and award-winning solar solutions for home and business. Our expertise includes tailored rooftop solar installation for all roof types, including specialized slate roof. Providing comprehensive financial analysis and ROI projections, multiple ownership options through trusted financial partners. Offering alternative solutions such as community-shared solar, competitive electricity rates, and EV charging solutions for residential, commercial and municipal. With over 2,000 happy Massachusetts customers, we're committed to delivering only the highest-quality products, craftsmanship and service. Sunrich Power delivers energy solutions that work for you—whether it's a tailored rooftop solar project, EV charging solutions, or something simple- Our 'electric bill services” : Highly-competitive electricity rates, or community-shared solar credits for home or business. Contact us today for a hassle-free energy consultation, without pushy salespeople using high pressure sales tactics!

"James Richardson, my sales rep has been excellent throughout the entire process, providing expertise in all areas of the sale, service, banking, product. He has set the right expectations along the way. Unfortunately, Palmetto moved too fast to distance themselves from Sunlight Financial, causing me significant anxiety and distress, ultimately backtracking to get me back on track losing two weeks in my installation."

Jerry H on November 2023


RSS Solar

Aurora Ave.
No reviews yet

RSS Solar

Aurora Ave.
No reviews yet
Free onsite estimate

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.


Blue Air HVAC

5.00(
1
)

Blue Air HVAC

5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

HVAC Specialists! Repair, Diagnostics, and Installation. We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today!

"Very professional, right price. Came to the project and did his job, no mess and great customer service. I would right him again."

Welton D on February 2022

HVAC Specialists! Repair, Diagnostics, and Installation. We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today!

"Very professional, right price. Came to the project and did his job, no mess and great customer service. I would right him again."

Welton D on February 2022

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Energy Efficiency Auditing questions, answered by experts

While you can perform many routine home maintenance jobs yourself, it’s often a good idea to bring pros in for certain tasks. HVAC maintenance, fireplace and chimney inspections, foundation repairs, and roof inspections and repairs should be handled by professionals who know what to look for and can safely perform repairs. You may also find it helpful to hire a local house cleaning service to help with deep cleaning.

ENERGY STAR®-certified windows are the most energy-efficient windows on the market. This certification means that the window meets strict efficiency guidelines set forth by the Environmental Protection Agency. While they might cost more upfront, they can save you money on your energy bills in the long run. ENERGY STAR®-certified windows lower household energy bills by an average of 12% annually.

There are several indications of an overloaded electrical panel, such as frequent circuit breaker tripping, burn marks, or flickering or dimming lights.

If you’re observing any warning signs, turn the circuit breaker off, then shift some devices from the overloaded circuit to a different one. If there are still signs of overload after turning the circuit break back on, contact a professional electrician to help you fix the issue.

A whole-home humidifier can impact your energy bill positively. In colder months, humidified air feels warmer, allowing you to lower your thermostat without sacrificing comfort. This can lead to energy savings as your heating system works more efficiently. However, it's crucial to use the humidifier judiciously to avoid excessive humidity, which might strain your cooling system in warmer months.

An average, 400-square-foot electric heated driveways consume approximately $3 per hour in terms of electricity. The price may slightly fluctuate depending on your local energy cost. A simple formula to calculate your heated driveway’s total wattage consumption is by multiplying the square footage by 50 watts and then dividing it by 1,000 to get the kilowatt number. Multiply that with your local energy cost per hour and there you have the hourly operating cost.

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The Harvard, MA homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.