Get matched with top energy efficiency auditors in Olivette, MO

Recommended by 94% of Angi customers

2009 years of experience

With over twenty-five years of experience in the industry, Hosack Plumbing Heating & Cooling is the right team to trust with all of your plumbing and heating and cooling needs. Our professional St. Louis technicians are highly skilled, extensively trained, extremely knowledgeable, and expertly proficient. We specialize in commercial and residential plumbing as well as residential heating and cooling. Our technicians will do everything possible to ensure that you have the most reliable and efficient plumbing and hvac systems possible.

"Dan and Bill were great to work with and did excellent work. They were fast, professional and friendly"

Clare S on November 2024

"Dan and Bill were great to work with and did excellent work. They were fast, professional and friendly"

Clare S on November 2024

Foam Engineers

Foam Engineers

1988 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

"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

Danna Enterprises LLC

Danna Enterprises LLC

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

"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

Indoor Comfort Team

4.95(

258

Indoor Comfort Team

4.95(

258

Customers say: True professional

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

"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

7 Oaks Home Inspection LLC

4.93(

7 Oaks Home Inspection LLC

4.93(

Recommended by 97% of Angi 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

"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

Siefert Mechanical - Heating & Cooling

Siefert Mechanical - Heating & Cooling

Recommended by 100% of Angi customers

Specializing in new system installs, System replacement, indoor air quality products such as humidifiers, EAC electronic air cleaners, ductless systems (mini splits) & Wi-fi thermostats. Providing both light commercial & residential service in St. Louis! Our #1 priority is your satisfaction!

"I previously worked with another company to replace my furnace. The first company was extremely flakey and would constantly cancel my appointments or simply not show up. Eventually, I decided to go on Angie's List, and I found Siefert Mechanical. This company was extremely quick to get to my house, give me an estimate, and then perform the service. Not only did Siefert Mechanical quote me a price that was $600 less than the first company, they also never cancelled or missed an appointment. They came out once to give me a quote, then the very next time they came out to my house, they replaced my furnace. The quality of their work is extremely professional, and I would HIGHLY recommend this company for any heating/cooling service you need performed."

Aaron C on January 2021

"I previously worked with another company to replace my furnace. The first company was extremely flakey and would constantly cancel my appointments or simply not show up. Eventually, I decided to go on Angie's List, and I found Siefert Mechanical. This company was extremely quick to get to my house, give me an estimate, and then perform the service. Not only did Siefert Mechanical quote me a price that was $600 less than the first company, they also never cancelled or missed an appointment. They came out once to give me a quote, then the very next time they came out to my house, they replaced my furnace. The quality of their work is extremely professional, and I would HIGHLY recommend this company for any heating/cooling service you need performed."

Aaron C on January 2021

St Louis Insulation

St Louis Insulation

We are proud to be a trusted Ally with Spire Energy of Missouri ! St Louis Insulation is a full service home maintenance , energy efficiency, insulation and soundproofing contractor that specializes in "Everything Attics, Basements, Crawl - Spaces" and various additional specialty applications ( existing residential buildings). If you dont know who to call, call us! We are a family owned and operated company that takes pride in the services that we provide and loves providing results for our customers. If you are looking for an honest and reliable contractor look no further than St. Louis Insulation! St Louis Insulation offers a unique understanding of building types, methods and construction techniques used during various periods of residential construction. St Louis Insulation provides in depth knowledge of the challenging and fluctuating weather that we face each year in the Midwest and the techniques best used to address and correct the problem while maintaining the integrity of the building. St Louis Insulation offers exceptional service , competitive pricing, and a 100% customer satisfaction guarantee. Our in depth knowledge and continual training of the latest techniques in building science maintains our edge over the competition and provides our customers with unparalleled expertise in a unique industry. St Louis Insulation offers customers common sense strategies and state of the art materials to maximize your investment while providing solid results. St Louis Insulation uses materials and techniques that are effective and commonly last 30 + years. If you're going to do it, do it once and be done! Call or Email Us today or visit stlouisinsulation.com and use our self scheduling tool to arrange a consultation.

"What an outstanding company. Everyone was extremely polite. They kept me informed throughout the entire process and the job site was cleaned completely. Very very pleased with the work and will use them again"

Lori L on January 2023

"What an outstanding company. Everyone was extremely polite. They kept me informed throughout the entire process and the job site was cleaned completely. Very very pleased with the work and will use them again"

Lori L on January 2023

Holper's Pest & Animal Solutions

4.65(

144

Holper's Pest & Animal Solutions

4.65(

144

Recommended by 90% of Angi customers

Holper's Pest & Animal Solutions, the company that has been giving customers "Peace of Mind" in pest and animal control for over 34 years, also offers "Peace of Mind" with insulation and weatherization. Holper’s is dedicated to providing customers with the finest service. We will use our knowledge and expertise to solve your pest and animal problems or your insulation and weatherization issues from the initial contact through the entire process. We do not sell a product, but a customer experience that makes our customers feel good about inviting us into their lives. Whether you have ants in your kitchen, mice in your attic, termites in your foundation, moles in your yard, or any other annoying pest that is disrupting your peace of mind...Holper’s has a natural, non-invasive, and effective solution. You can learn the A - Attic, B - Basement, C's - Crawl Space of insulation and weatherization from Holper's. We will send a Certified Efficiency Analyst to perform an inspection of your home and show you how to improve heating and cooling efficiency, while keeping pests and animals out with the same solutions. Holper's take pride in helping to solve all homeowners' pest and energy problems. That's why "solutions" is part of our name!

"The gentlemen from Holper’s came a day early and broke in to my locked yard to obtain their trap. I had discovered that everything this company catches in traps, they KILL. There is no humane solutions to a critter in your attics with Holper’s. I have the footage from my camera of their employee hopping my privacy fence and removing the trap with the opossum in it. This gentlemen never went in to my attic and I am not sure he was even on the roof of my home. I have been billed $219.00 already and they are attempting to bill me another $109.00 to pick up their trap. I had already contacted a home pest service and he gave me instructions on how to handle the opossum and the trap before Holper’s came back. I will never do business with a company that breaks in to a client’s home against their wishes. Not a good way to please the customer."

Jennifer C on April 2024

"The gentlemen from Holper’s came a day early and broke in to my locked yard to obtain their trap. I had discovered that everything this company catches in traps, they KILL. There is no humane solutions to a critter in your attics with Holper’s. I have the footage from my camera of their employee hopping my privacy fence and removing the trap with the opossum in it. This gentlemen never went in to my attic and I am not sure he was even on the roof of my home. I have been billed $219.00 already and they are attempting to bill me another $109.00 to pick up their trap. I had already contacted a home pest service and he gave me instructions on how to handle the opossum and the trap before Holper’s came back. I will never do business with a company that breaks in to a client’s home against their wishes. Not a good way to please the customer."

Jennifer C on April 2024

Classic Aire Care Inc

4.58(

Classic Aire Care Inc

4.58(

1926 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

"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

Green Tree Home Solutions

4.81(

Green Tree Home Solutions

4.81(