Top-rated energy efficiency auditors.

Get matched with top energy efficiency auditors in Festus, MO

Enter your zip and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Festus, MO?

Select your specific project to find the pro for you.

Verified Reviews for Energy Efficiency Auditing pros in Festus, MO

*The Angi rating for Energy Efficiency Auditing companies in Festus, MO 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 Festus, MO 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 January 06, 2026

Find Energy efficiency auditors in Festus

Avatar for Foam Engineers

Foam Engineers

4.85(
190
)
•Approved Pro

Foam Engineers

4.85(
190
)
•Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
38 years of experience

A poorly insulated home raises energy bills and creates unhealthy living conditions. Foam Engineers are experts who insulate to create cost efficient, healthy living spaces making home even better. Foam Engineers has been servicing the St. Louis and Illinois since 1983. We specialize in thermal imaging and diagnostic testing to make sure the improvements we recommend are valid and cost effective. We install all types of insulation, remove degraded or inefficient insulation, seal ductwork, create crawlspace vapor barriers, replace or add bath fans and much more. Please contact us to see how we can help your home!

"I was very disappointed. Paid over $2000 for very little difference in my concrete. I would not do it again. They may be good with insulation but not in mud jacking sunken concrete. Said if I wanted more done, would have to pay more. Really!"

Judy T on December 2024

A poorly insulated home raises energy bills and creates unhealthy living conditions. Foam Engineers are experts who insulate to create cost efficient, healthy living spaces making home even better. Foam Engineers has been servicing the St. Louis and Illinois since 1983. We specialize in thermal imaging and diagnostic testing to make sure the improvements we recommend are valid and cost effective. We install all types of insulation, remove degraded or inefficient insulation, seal ductwork, create crawlspace vapor barriers, replace or add bath fans and much more. Please contact us to see how we can help your home!

"I was very disappointed. Paid over $2000 for very little difference in my concrete. I would not do it again. They may be good with insulation but not in mud jacking sunken concrete. Said if I wanted more done, would have to pay more. Really!"

Judy T on December 2024

Avatar for Danna Enterprises LLC

Danna Enterprises LLC

5.00(
66
)

Danna Enterprises LLC

5.00(
66
)
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Danna Enterprises is a small veteran owned and operated company that provides a one stop service for all of your home improvement and maintenance needs. Please contact me directly at (636) 358-6714 rather than the Angie's List Message Center.

"Frank was excellent. He is very detail oriented and wants to do nothing more than an excellent job. The work he did was as if he was doing it in his own home. If you need work done and want it done right. Call him you’ll be glad you did."

Charles C on July 2020

Danna Enterprises is a small veteran owned and operated company that provides a one stop service for all of your home improvement and maintenance needs. Please contact me directly at (636) 358-6714 rather than the Angie's List Message Center.

"Frank was excellent. He is very detail oriented and wants to do nothing more than an excellent job. The work he did was as if he was doing it in his own home. If you need work done and want it done right. Call him you’ll be glad you did."

Charles C on July 2020

Avatar for Indoor Comfort Team

Indoor Comfort Team

4.95(
258
)

Indoor Comfort Team

4.95(
258
)
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Our customer-first approach has been at core of Indoor Comfort Team® business model since we first began servicing customers in the St. Louis, St. Charles and the Metro East areas with professional air conditioning as well as heating services back in 1979. Customer-first means honesty and integrity are the foundation of everything we do. From your initial phone call, to our certified and licensed service technician completing the job, to your full satisfaction. Trust, knowledge and competitive pricing have made us one of the most respected and trusted home services companies. But the fact is, we owe our success to our great customers and dedicated team who provide dependable service. Our team is proud to serve our customers.

"Indoor Comfort Team installed my HVAC system in 2019 and I have continued to use them for my regular fall and spring servicing. They consistently do an outstanding job. I had my most recent service done today, and the technician, Sabrina McIntyre, was no exception. She was prompt and efficient and carefully explained everything she checked. I was highly satisfied with her work. "

Steve M on November 2025

Our customer-first approach has been at core of Indoor Comfort Team® business model since we first began servicing customers in the St. Louis, St. Charles and the Metro East areas with professional air conditioning as well as heating services back in 1979. Customer-first means honesty and integrity are the foundation of everything we do. From your initial phone call, to our certified and licensed service technician completing the job, to your full satisfaction. Trust, knowledge and competitive pricing have made us one of the most respected and trusted home services companies. But the fact is, we owe our success to our great customers and dedicated team who provide dependable service. Our team is proud to serve our customers.

"Indoor Comfort Team installed my HVAC system in 2019 and I have continued to use them for my regular fall and spring servicing. They consistently do an outstanding job. I had my most recent service done today, and the technician, Sabrina McIntyre, was no exception. She was prompt and efficient and carefully explained everything she checked. I was highly satisfied with her work. "

Steve M on November 2025

Avatar for 7 Oaks Home Inspection LLC

7 Oaks Home Inspection LLC

4.93(
97
)

7 Oaks Home Inspection LLC

4.93(
97
)
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

7 Oaks Home Inspection, LLC has four full time experienced ASHI inspectors and excellent rates. Our inspectors are licensed and or certified in all areas allowing you to save time with only one inspector and discounted prices, too. For those who prefer to pay for services at time of closing we offer a pay at close option for an additional $50. Just ask for details.

"Great! We were given the fee up front, able to schedule within a timely manner, and received the report back the evening the inspection was done."

Amanda S on July 2018

7 Oaks Home Inspection, LLC has four full time experienced ASHI inspectors and excellent rates. Our inspectors are licensed and or certified in all areas allowing you to save time with only one inspector and discounted prices, too. For those who prefer to pay for services at time of closing we offer a pay at close option for an additional $50. Just ask for details.

"Great! We were given the fee up front, able to schedule within a timely manner, and received the report back the evening the inspection was done."

Amanda S on July 2018

Avatar for Classic Aire Care Inc

Classic Aire Care Inc

4.58(
85
)

Classic Aire Care Inc

4.58(
85
)
Customers say: Super punctual
100 years of experience

From winter's chill through the dog days of summer, our primary goal at Classic Aire Care, Inc. is to keep your home comfortable for you and your family. But, that's just the beginning. We also offer you peace of mind, ensuring your equipment operates safely. We help you save money on your fuel bills. And, we help deliver relief to those with Allergiesand many others concerned with the Quality of the Air they breathe.

"I purchased a new AC unit last summer. When firing it up last month, the motor was dead and required a replacement. The motor had to be ordered, and I was told they would cover the cost of the motor (I should hope so), but I'd have to pay for the installation. I feel that, when purchasing a piece of equipment that expensive, one expects both the vendor and manufacturer to fully stand behind their products. Obviously, they did not. I tried to call the service manager to discuss this, but had to leave a message since he wasn't available. No return call. When the repair person came out to do the installation, I also asked him to have the service manager call. Again, no follow through. CAC also schedules for full day windows. For many households, that is simply not manageable. We have jobs, and I think the CAC policy is simply indicative that they are taking their customers' needs seriously. I have no complaints about the service technician that did the repair"

Christopher L on June 2023

From winter's chill through the dog days of summer, our primary goal at Classic Aire Care, Inc. is to keep your home comfortable for you and your family. But, that's just the beginning. We also offer you peace of mind, ensuring your equipment operates safely. We help you save money on your fuel bills. And, we help deliver relief to those with Allergiesand many others concerned with the Quality of the Air they breathe.

"I purchased a new AC unit last summer. When firing it up last month, the motor was dead and required a replacement. The motor had to be ordered, and I was told they would cover the cost of the motor (I should hope so), but I'd have to pay for the installation. I feel that, when purchasing a piece of equipment that expensive, one expects both the vendor and manufacturer to fully stand behind their products. Obviously, they did not. I tried to call the service manager to discuss this, but had to leave a message since he wasn't available. No return call. When the repair person came out to do the installation, I also asked him to have the service manager call. Again, no follow through. CAC also schedules for full day windows. For many households, that is simply not manageable. We have jobs, and I think the CAC policy is simply indicative that they are taking their customers' needs seriously. I have no complaints about the service technician that did the repair"

Christopher L on June 2023

Avatar for Awtrey Heating & Air Conditioning

Awtrey Heating & Air Conditioning

4.97(
35
)

Awtrey Heating & Air Conditioning

4.97(
35
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We specialize in repair, maintenance & replacement of residential & light commercial comfort control equipment.

"Amazing professional Shane was very good of explaining everything he didn't push me into buying his services instead of others ,I have told him I have 10 others coming to give me estimate .That is mostly what got me to use him instead of others.Best people I have use ever.?"

Fahreta P on April 2022

We specialize in repair, maintenance & replacement of residential & light commercial comfort control equipment.

"Amazing professional Shane was very good of explaining everything he didn't push me into buying his services instead of others ,I have told him I have 10 others coming to give me estimate .That is mostly what got me to use him instead of others.Best people I have use ever.?"

Fahreta P on April 2022

Avatar for Extreme Electrical Contractors LLC

Extreme Electrical Contractors LLC

4.60(
43
)

Extreme Electrical Contractors LLC

4.60(
43
)
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Welcome to Extreme Electrical Contractors, LLC, serving St. Louis and surrounding areas. We offer everything from small residential fixes such as installing a ceiling fan to major industrial projects such as wiring a machine shop. Julie and Mandy manage our business. Caleb and Nathan estimate and manage specific projects within our organization. Nathan and Mandy grew up in St. Charles, Missouri. Caleb is a licensed master electrician who has lived in St. Charles County for more than 20 years. We know our neighbors, and our neighbors know us. This means you can trust us to deliver as promised, whether your project is large or small. Our company is licensed, bonded, and insured for your protection, and we perform all work according to the National Electrical Code. We provide thorough, specialized services and strive not only to meet but to exceed your expectations. For your further peace of mind, we guarantee all new work and labor for one full year.

"Everyone we worked with on our project did a great job. They were prompt, courteous, helpful, and great at making suggestions for things we could do differently, or how we could get more for the same amount, or even save money. We had some changes along the way with things we needed added, and they were so flexible and helpful with these unexpected add ons. I would highly recommend them!"

Jackie H on May 2022

Welcome to Extreme Electrical Contractors, LLC, serving St. Louis and surrounding areas. We offer everything from small residential fixes such as installing a ceiling fan to major industrial projects such as wiring a machine shop. Julie and Mandy manage our business. Caleb and Nathan estimate and manage specific projects within our organization. Nathan and Mandy grew up in St. Charles, Missouri. Caleb is a licensed master electrician who has lived in St. Charles County for more than 20 years. We know our neighbors, and our neighbors know us. This means you can trust us to deliver as promised, whether your project is large or small. Our company is licensed, bonded, and insured for your protection, and we perform all work according to the National Electrical Code. We provide thorough, specialized services and strive not only to meet but to exceed your expectations. For your further peace of mind, we guarantee all new work and labor for one full year.

"Everyone we worked with on our project did a great job. They were prompt, courteous, helpful, and great at making suggestions for things we could do differently, or how we could get more for the same amount, or even save money. We had some changes along the way with things we needed added, and they were so flexible and helpful with these unexpected add ons. I would highly recommend them!"

Jackie H on May 2022

Avatar for Patriot Sunrooms & Home Solutions Inc

Patriot Sunrooms & Home Solutions Inc

4.40(
35
)

Patriot Sunrooms & Home Solutions Inc

4.40(
35
)
Customers say: Quality work
69 years of experience

Patriot Sunrooms & Home Solutions is independently owned and operated.

"My garage floor cracked and coating discolored 1 year after install. Crack was the size of your hand. Wanted to charge me $400-600 for repair. Was told it would not crack. Way too expensive for sub par filling material thats shrinks and cracks. They talk a good talk but do not stand behind there work. Stay away from this company and find one that will stand behind there product and material."

Robert O on August 2023

Patriot Sunrooms & Home Solutions is independently owned and operated.

"My garage floor cracked and coating discolored 1 year after install. Crack was the size of your hand. Wanted to charge me $400-600 for repair. Was told it would not crack. Way too expensive for sub par filling material thats shrinks and cracks. They talk a good talk but do not stand behind there work. Stay away from this company and find one that will stand behind there product and material."

Robert O on August 2023

Avatar for StraightUp Solar

StraightUp Solar

4.57(
14
)

StraightUp Solar

4.57(
14
)
Customers say: Quality work
20 years of experience

StraightUp Solar is a BBB A+, locally owned Certified B Corp founded in 2006. StraightUp Solar has completed more than 1,700 solar energy installations totaling over 22 MW, and continues to serve the region from offices located in Bloomington, Illinois and St. Louis, Missouri. StraightUp Solar is a member-owner in both the Amicus Solar Cooperative and the Amicus O&M Cooperative, and is proud to be an active voice in the Illinois Solar Energy Association. Solar Design & Installation, Energy Storage/Solar Battery, Solar Service & Maintenance, Electric Vehicle Charging Stations, Solar Remove & Replace

StraightUp Solar is a BBB A+, locally owned Certified B Corp founded in 2006. StraightUp Solar has completed more than 1,700 solar energy installations totaling over 22 MW, and continues to serve the region from offices located in Bloomington, Illinois and St. Louis, Missouri. StraightUp Solar is a member-owner in both the Amicus Solar Cooperative and the Amicus O&M Cooperative, and is proud to be an active voice in the Illinois Solar Energy Association. Solar Design & Installation, Energy Storage/Solar Battery, Solar Service & Maintenance, Electric Vehicle Charging Stations, Solar Remove & Replace

SHOW ME HOME ENERGY SOLUTIONS LLC

4.80(
10
)

SHOW ME HOME ENERGY SOLUTIONS LLC

4.80(
10
)
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Show Me Home Energy Solutions LLC is a referral practice in that its services are typically for those clients who have demonstrated efficiency or comfort problems, those who are seeking deep energy reductions, or those who have had unsatisfactory solutions from other companies. We currently accept new clients by referral only. SMHES LLC is a Certified Missouri Home Energy Auditor, a certified BPI Professional (both Building Analyst and Envelope Professional), a certified Home Energy Rating System Rater, and a Leadership in Energy and Environmental Design Accredited Professional (LEED AP). A former Field Engineer (Staff) in Lockheed Martin's residential energy efficiency division, David Rabenau provides you with an objective and independent audit of your home. Most of our services and recommendations qualify for federal and state tax credits and deductions. SMHES LLC is a Certified Missouri Home Energy Auditor, a certified BPI Professional (both Building Analyst and Envelope Professional), a certified Home Energy Rating System Rater, and a Leadership in Energy and Environmental Design Accredited Professional (LEED AP). A former Field Engineer (Staff) in Lockheed Martin's residential energy efficiency division, David Rabenau provides you with an objective and independent audit of your home. Most of our services and recommendations qualify for federal and state tax credits and deductions. BBB Accredited.

Show Me Home Energy Solutions LLC is a referral practice in that its services are typically for those clients who have demonstrated efficiency or comfort problems, those who are seeking deep energy reductions, or those who have had unsatisfactory solutions from other companies. We currently accept new clients by referral only. SMHES LLC is a Certified Missouri Home Energy Auditor, a certified BPI Professional (both Building Analyst and Envelope Professional), a certified Home Energy Rating System Rater, and a Leadership in Energy and Environmental Design Accredited Professional (LEED AP). A former Field Engineer (Staff) in Lockheed Martin's residential energy efficiency division, David Rabenau provides you with an objective and independent audit of your home. Most of our services and recommendations qualify for federal and state tax credits and deductions. SMHES LLC is a Certified Missouri Home Energy Auditor, a certified BPI Professional (both Building Analyst and Envelope Professional), a certified Home Energy Rating System Rater, and a Leadership in Energy and Environmental Design Accredited Professional (LEED AP). A former Field Engineer (Staff) in Lockheed Martin's residential energy efficiency division, David Rabenau provides you with an objective and independent audit of your home. Most of our services and recommendations qualify for federal and state tax credits and deductions. BBB Accredited.

Showing 1-10 of 47
Energy Efficiency Auditing questions, answered by experts

Services by electricians can quickly get expensive, but there are a few ways you can save money in the process:

  • Bundle multiple jobs done at the same time to save on trip fees or flat fees for individual projects.

  • Get at least three quotes for service to find the best deal.

  • Buy fixtures, switches, outlets, and other materials beforehand to avoid product markup.

  • If you feel comfortable with it, have an apprentice or journeyman complete the work under the supervision of a master electrician. These electricians in training tend to charge less per project.

No, it isn’t necessary to have energy-efficient windows. However, if you care about your energy bill and making your windows more energy efficient, fixing any heat, UV, or air transfer issues is an excellent way to lower your bills and keep your house cooler in the summer and warmer in the winter.

STC (Sound Transmission Class) ratings tell you how well something blocks airborne noise. It’s a single number that sums up how much sound a material, like a window, can stop across regular speech frequencies. The higher the number, the better the sound reduction. A typical single-pane window hovers around STC 25 (where you can hear normal conversations), while well-sealed, double-pane options can push past STC 45 (which blocks out loud speech and most music). Just keep in mind that STC doesn’t cover everything—low rumbles like bass or thunder can sneak through—so pairing methods are always ideal for the most peace and quiet.

Absolutely! Especially if you have an older home that currently doesn’t have air conditioning where installing ductwork just wouldn't work. No one likes being hot in the warmer months, so if you’re looking to sell your home in the near future, installing a ductless mini-split AC can be a good way to enjoy your home more while you’re in it, boost the return on your sale, and serve as a perk to peak buyers’ interest.

Smart home upgrades can be worth the money. Several upgrades, including smart thermostats and ceiling fans, can help reduce your energy bills. Others make life more convenient, freeing up your time to do what you love (or get more work done). And some smart home upgrades, such as entertainment systems, simply make life more enjoyable. All are worthy causes.

The Festus, MO 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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"