Best energy efficiency auditors near Hamilton, MT

Q: What is R-value?

• <div><p>R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.</p></div>

Q: How long does a blower door test take?

• <div><p>A blower door test shouldn&rsquo;t take more than an hour, and most can be completed in less than 30 minutes. Expect the test to take longer once you start searching for leaks with thermal imaging or want to include sealing such leaks in the time estimate. The test doesn&rsquo;t take much time and can&rsquo;t be rushed, but it will take longer in large homes or those with many air leaks. </p></div>

Q: How can I get the highest possible appraisal for my property?

• <div><p>While some aspects of an appraisal, such as comparable properties nearby, are out of your control, there are several steps you can take to potentially increase your home's value. Make any necessary repairs and upgrades before the appraiser's visit, as they can only value what is currently part of the home, not its potential. Examples include renovating older areas, updating landscaping to boost curb appeal, and staging your home. You can also provide the appraiser with the cost of recent upgrades, which may increase your home's value by about 50% or more of what you paid for those improvements.</p></div>

Q: How long does an energy audit take?

• <div><p>Audits typically take 2-4 hours, depending on the property size and energy systems.</p></div>

Q: Do window AC units use a lot of electricity?

• <div><p>Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts&mdash;meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.</p></div>

Enter your zip and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Hamilton, MT?

Select your specific project to find the pro for you.

Verified Reviews for Energy Efficiency Auditing pros in Hamilton, MT

*The Angi rating for Energy Efficiency Auditing companies in Hamilton, MT 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 Hamilton, MT 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 February 10, 2026

Reviewed in February 2026
On time, very efficient. Very happy.
Versatile Home Services LLC
Request a quote
Reviewed in October 2025
Our experience with RbA of Montana was wonderful. Major remodels (22 windows) can cause some anxiety. But we were kept informed every step of the way and the windows were installed quickly and efficiently. And we had NO finishing work to do when the crew left. Great experience!
Renewal by Andersen of Montana
Request a quote
Reviewed in August 2023
Grate customer service, easy to work with, fast and efficient and complicated my job on schedule.
Hi Enterprises, LLC
Request a quote
Reviewed in August 2023
When I called to find out about the services, I wasn't even off the phone when Josiah Van Kirk called me. He came up to our house within 2 hours & walked the property with my husband. We hired him & he & his crew started on Monday. They were finished by Wednesday. We were so impressed with the...
Van Kirk Creations & Home Improvement
Request a quote
Reviewed in July 2023
Professional job, prompt, knowledgeable and efficient. Highly recommend Troy!!
Attaboy Services, LLC
Request a quote
Reviewed in March 2022
On time and efficient. Very helpful. Always give ideas or suggestions.
Big Pine Industrial, Inc.
Request a quote
Reviewed in April 2021
Our lawn needed a lot done. Eric and his crew exceeded our expectations with the spring yard cleanup! Efficient and attention to detail. We will absolutely use their services again. -Gina C. in Hamilton, MT
Heritage Yard Care
Request a quote
Reviewed in February 2020
Prompt, keeps customers informed, completes project quickly and efficiently. Would recommend to anyone. Also a very nice person.
Miller Painting and Contracting
Request a quote
Reviewed in December 2019
Very knowledgeable and efficient service. Good customer relations
Orca Fireplace, LLC
Request a quote
Reviewed in October 2019
very professional, friendly, efficient - did the job i asked for in good time
Gray's Electric
Request a quote

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

R&J Solar LLC

5.0(

)

Energy Audit - For BusinessHome Energy Audit

Serving Hamilton, MT 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.

Recommended by100%of homeowners

Serving Hamilton, MT and surrounding areas

In business since 2012

Free estimates

Credit card accepted

At Highmark Inspections, we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Recommended by100%of homeowners

Request Quote

Planetary Systems, Inc.

0.0(

)

Home Energy Audit

Serving Hamilton, MT and surrounding areas

In business since 1994

Free estimates

Credit card accepted

Planetary Systems has been designing and installing renewable energy systems since 1994, and has over 1600 operational systems from .5kw to 22kw, worldwide. We have always been and remain committed to tested and reliable, yet cutting edge technologies to advance local power generation capabilities. We firmly believe all electrical power should be locally generated and using as much energy as practically feasible from wind, solar, hydro-electric and other renewable sources. \n Planetary Systems offers our own battery technology, integrated power solutions, and the best available products available in the world marketplace. \n \nOur offerings are based on value-added products, not bargain basement prices, and include complete testing, design and integration of systems plus expert technical assistance.

Recommended by100%of homeowners

Request Quote

TCH Builders & Remodeling

4.0(

)

Energy Audit - For BusinessHome Energy Audit

Serving Hamilton, MT and surrounding areas

In business since 1999

Emergency services offered

Credit card accepted

If you dream it, we can build it. What's the biggest difference between us and them? We build to last! We offer a full line of Green and Energy Star Certified products, backed by our labor and manufacturer's lifetime transferable warranties. Credit Cards Welcome Financing Available OAC.

Recommended by100%of homeowners

Request Quote

Energy Efficiency Auditing FAQs, answered by experts

R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.

A blower door test shouldn’t take more than an hour, and most can be completed in less than 30 minutes. Expect the test to take longer once you start searching for leaks with thermal imaging or want to include sealing such leaks in the time estimate. The test doesn’t take much time and can’t be rushed, but it will take longer in large homes or those with many air leaks.

While some aspects of an appraisal, such as comparable properties nearby, are out of your control, there are several steps you can take to potentially increase your home's value. Make any necessary repairs and upgrades before the appraiser's visit, as they can only value what is currently part of the home, not its potential. Examples include renovating older areas, updating landscaping to boost curb appeal, and staging your home. You can also provide the appraiser with the cost of recent upgrades, which may increase your home's value by about 50% or more of what you paid for those improvements.

Audits typically take 2-4 hours, depending on the property size and energy systems.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

The Hamilton, MT homeowners’ guide to energy efficiency auditing services

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

See all articles

Angi
•
Oct 8, 2026Oct 8, 2026
How Much Does a Home Energy Audit Cost? [2026 Data]
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.
Angi
•
Oct 29, 2026Oct 29, 2026
How Much Do Energy-Efficient Windows Cost? [2026 Data]
Discover the energy-efficient window costs. Learn about installation prices, cost factors, and tips to save money on your window upgrade.
Kat Brancato
•
Jul 9, 2026Jul 9, 2026
How Much is the Average Electric Bill? [2026 Data]
How much is the average electric bill in the United States? Learn how much the average electric bill costs in your state and ways to reduce it.
Allie Ogletree
•
Aug 4, 2026Aug 4, 2026
What Is an Energy Audit and Why Is It Important for Your Home?
Wondering what an energy audit is and how it can help keep you safe? Keep reading to learn about home energy audits and how they can save you money.
Rachel Hoffman
•
Jul 9, 2026Jul 9, 2026
Are Energy Audits Worth It?
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.
Angi
•
Aug 25, 2026Aug 25, 2026
Home Energy Audit: Everything You Need to Know
Thinking about scheduling a home energy audit? Learn how to improve energy efficiency, lower your utility bills, and hire the right local pro for the job.