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TRUSTED BY RANDOLPH, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon21
    Verified energy efficiency auditing services reviews

Top-Rated Energy efficiency auditors in Randolph - Updated Nov 2026

Avatar for ENDLESS ENERGY NEW ENGLAND, INC.
ENDLESS ENERGY NEW ENGLAND, INC.
4.7(
20
)
Home Energy AuditEnergy Audit - For Business

Serving Randolph, MA and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

Endless Energy is a trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts with office in Marlborough, Needham, and Randolph. Specializing in Heat Pumps, Central AC, Furnaces, and Boilers, 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.\n\nWe can help you with: \n*Heating Repairs, Installation, & Service\n*AC Repairs, Installation, & Service\n*Plumbing Repairs, Installation & Service\n*Water Heater Replacement & Service\n*Indoor Air Quality Solutions\n*Ductwork & Line Set Solutions\n*Electrical Panel Upgrades and Replacement\n*Insulation \n*No Cost Home Energy Assessments\n\nA 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!

Holliston Heat Pump
Boston Heat Pump
Natick Ducted System
218 neighbors recently requested a quote
Recommended by70%of homeowners
Sustainable Energy Managemnt Group
New to Angi
Energy Audit - For Business

Serving Randolph, MA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

One of the best in terms of reliable Solar work in the area. Established and credible company working with professionals who specialize in things from roof mounted, or parking lot solar electricity, to energy assessments. The President, Cameron, is a strong advocate for all of his clients giving good energy advice that saves money.

AVID Energy Solutions
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Randolph, MA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

AVID Energy Solutions is a team of experts dedicated to helping homes reduce their energy output and monthly utility bills. Based in Methuen and Sutton MA, we work with clients throughout Massachusetts and New Hampshire to find the best possible solutions for their needs and budget. We believe that everyone should have access to affordable, reliable energy efficient solutions, and we are committed to providing that access. Our team is composed of certified energy auditors, professional installers, and friendly customer service representatives who are all committed to providing the highest level of service. We offer a no-cost home assessment to get started, and we work with you every step of the way to ensure that you are getting the most out of your investment. Contact us today to schedule your free home assessment and start saving!

2 neighbors recently requested a quote
Avatar for Commonwealth Energy MA
Commonwealth Energy MA
4.5(
32
)
Energy Audit - For BusinessHome Energy Audit

Serving Randolph, MA and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Exceptional work done by professionals. They did a great job of making things easy for me as a customer. All the scheduling and communication was on time and clear. I would absolutely Recommend them to anyone looking to upgrade their house to be more energy efficient."
Methuen installation
Methuen installation
Methuen installation
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+5

Recommended by84%of homeowners
Avatar for HUGH'S ENERGY CONSERVATION
HUGH'S ENERGY CONSERVATION
4.4(
118
)
Energy Audit - For BusinessHome Energy Audit

Serving Randolph, MA and surrounding areas

In business since 1975

Free estimates

Credit card accepted

"Hugh’s Energy has done two jobs at my house, one for the attic and the other for a kitchen renovation, both using blown-in cellulose. They’re prompt, responsive, do quality work, and are reasonably priced. They also cleaned up very well, which matters because cellulose installation is very messy. Very happy with their work, and they work with MA Save."
Recommended by93%of homeowners
Energy Business Consulting, Inc.
5.0(
1
)
Home Energy Audit

Serving Randolph, MA and surrounding areas

In business since 1975

Free estimates

Credit card accepted

With over 45 years of experience serving our community, Energy Business Consulting is your solution for all of your Energy Audit and Solar needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed! Give us a call today, we are happy to help you with your project and look forward to talking to you.

Response time12 hrs
Recommended by100%of homeowners
Avatar for R&J Solar LLC
R&J Solar LLC
5.0(
2
)
Energy Audit - For BusinessHome Energy Audit

Serving Randolph, MA and surrounding areas

In business since 2022

Free estimates

Credit card accepted

We provide residential and commercial solar power options, and provide support services for industry partner companies. We offer no cost consultations and $0 down financing. Please contact our office for a consultation at (931)922-8258.

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+3

Recommended by100%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

Smart glass doesn’t use a lot of electricity, and you can expect a standard window to add between $1 and $2 per year to your electric bills. Smart glass is proof that energy-efficient windows work. Although your smart windows may consume a little energy to operate, they can save enough energy to offset the costs. If you’re concerned about the minimal bump to your electricity consumption, you can opt for smart tint, which doesn’t require electricity to work.

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.

Modern windows provide enhanced UV protection, improved heat retention, and cooling efficiency, contributing to overall household energy savings.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

If you want a new boiler that’s going to help lower your fuel bills, you should buy one that has a high energy-efficiency rating. For example, a boiler that is rated “A” uses at least 90% of the energy created by the boiler. And in order to enjoy the best performance, it’s important to have it installed properly by a highly-rated tech.

The Randolph, 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.