
Get matched with top nest installation pros in Mascoutah, IL
There are 11 highly-rated local nest installation pros.
Need a pro for your nest installation project in Mascoutah, IL?
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Verified Reviews for Nest Installation pros in Mascoutah, IL
*The Angi rating for Nest Installation companies in Mascoutah, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Nest Installation needs.
*The HomeAdvisor rating for Nest Installation companies in Mascoutah, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Nest Installation needs.
Last update on October 30, 2025
Find Nest installation pros in Mascoutah

ADT
ADT
ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.
"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."
Luke W on October 2025
ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.
"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."
Luke W on October 2025

Streib Company
Streib Company
We are a full-service electric, media, security and energy solution contractor in St. Louis, MO, built on a strong foundation of good old-fashioned work ethics. Our office hours are M-F 8-4:30, we offer after hours emergency service as well.
"Great job. I would definitely hire again."
Maureen K on February 2022
We are a full-service electric, media, security and energy solution contractor in St. Louis, MO, built on a strong foundation of good old-fashioned work ethics. Our office hours are M-F 8-4:30, we offer after hours emergency service as well.
"Great job. I would definitely hire again."
Maureen K on February 2022

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!
"This company is outstanding. I can not sing them enough praises."
Jacqueline W on May 2025
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!
"This company is outstanding. I can not sing them enough praises."
Jacqueline W on May 2025

Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Conditioning
Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Conditioning
Now offering one hour service for heating and air conditioning service. We are factory authorized to service all major brands and we offer all the top products in the industry. Year to year we win numerous awards for customer service and technical skill. Our team is dedicated to providing you with the attention to detail and customer service that can create a whole new level of comfort and energy savings. Led by owner Brett Nejmanowski, our company provides expert sales, service and installation. We have a team of technicians that are fully qualified to help you select the comfort system that best fits your home and your budget. We serve the greater St Louis area, and are a no-nonsense, everything-on-the -table kind of heating and cooling company. Our written 100% satisfaction guarantee is behind all the work we do – if you’re not happy with our heating and cooling services for any reason, we’ll make it right or give your money back, no questions asked! No matter if it is a furnace or AC repair, furnace and AC installation, heat pump installation, or anything heating and air conditioning-related, you will have our guarantee. Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve. We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks and the Sheriffs’ Association. Financing options available. Numerous rebate programs available. Government subsidized programs available to qualifying homes. Additional phone number (618) 717-0707 Also servicing clients from both 14248 F Manchester Rd, Ste. 190, Manchester MO, 63011 & 110 West Main St., Ste. A, Belleville IL, 62220!
"Very professional and thorough"
Carla F on May 2025
Now offering one hour service for heating and air conditioning service. We are factory authorized to service all major brands and we offer all the top products in the industry. Year to year we win numerous awards for customer service and technical skill. Our team is dedicated to providing you with the attention to detail and customer service that can create a whole new level of comfort and energy savings. Led by owner Brett Nejmanowski, our company provides expert sales, service and installation. We have a team of technicians that are fully qualified to help you select the comfort system that best fits your home and your budget. We serve the greater St Louis area, and are a no-nonsense, everything-on-the -table kind of heating and cooling company. Our written 100% satisfaction guarantee is behind all the work we do – if you’re not happy with our heating and cooling services for any reason, we’ll make it right or give your money back, no questions asked! No matter if it is a furnace or AC repair, furnace and AC installation, heat pump installation, or anything heating and air conditioning-related, you will have our guarantee. Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve. We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks and the Sheriffs’ Association. Financing options available. Numerous rebate programs available. Government subsidized programs available to qualifying homes. Additional phone number (618) 717-0707 Also servicing clients from both 14248 F Manchester Rd, Ste. 190, Manchester MO, 63011 & 110 West Main St., Ste. A, Belleville IL, 62220!
"Very professional and thorough"
Carla F on May 2025
Jarvis Electric Inc
Jarvis Electric Inc
Jarvis electric is a local family owned and operated business. We take pride in performing quality electric work at a reasonable price. We have over twenty years of experience in the electrical field. Honesty and integrity are two qualities we believe help to build a successful business. At Jarvis Electric we are building relationships, one job at a time. Update: We are currently not servicing East St. Louis.
"Jarvis Electric did all of the electric for our new build and has come back to add additional items that we have added since we have been in the home. Super responsive and quick to complete all requested work. Top notch service. Extremely reasonable price. I appreciate that they always keep a clean worksite and never leave a mess, even if coming back the next day to finish a job. I have not only used them for my home but referred them to my mom and dad as well when they needed work done. Great company with great people and really easy to deal with. They truly went above and beyond."
Keith J on June 2023
Jarvis electric is a local family owned and operated business. We take pride in performing quality electric work at a reasonable price. We have over twenty years of experience in the electrical field. Honesty and integrity are two qualities we believe help to build a successful business. At Jarvis Electric we are building relationships, one job at a time. Update: We are currently not servicing East St. Louis.
"Jarvis Electric did all of the electric for our new build and has come back to add additional items that we have added since we have been in the home. Super responsive and quick to complete all requested work. Top notch service. Extremely reasonable price. I appreciate that they always keep a clean worksite and never leave a mess, even if coming back the next day to finish a job. I have not only used them for my home but referred them to my mom and dad as well when they needed work done. Great company with great people and really easy to deal with. They truly went above and beyond."
Keith J on June 2023

Reinhold Electric Inc
Reinhold Electric Inc
We started in 1976, to provide quality and assurance to always satisfy the customer. We guarantee all of our work, and our employees deliver this proud craftsmanship. We also offer 24 hour emergency service. With a live answering service to take your calls, we have owners and electricians that are on standby around the clock.
"I really wanted to have a good experience with Reinhold. We’ve used them in the past and they did good work, we thought… recently our garage’s power stopped working, which is fed by a panel on the pole that they installed in August of 2022. We NEVER had a single electrical issue until after that pole was installed which is starting to make sense. A few months ago we began having electrical issues in our house, so we called Reinhold because we thought they did a good job when installing the pole that fell in 2022. The technicians that were out to see what the cause of the electrical issues in the house were said that the lines under ground were corroded (which may have been true), so we accepted to let them fix it. They hand dug by the electric pole, buried conduit and ran new wire to the house and everything seemed to be fine until we recently started having issues with the electric in our garage. The location where they dug and buried the conduit for the wire going to the house is in a very close location to where the conduit goes for the wires going from the pole to the garage. I called for an estimate and was told $5,000 worse case scenario which may be understandable considering that would include cutting asphalt, trenching, new conduit, new wire and labor so I get that. Upon receiving this news I decided to just take care of it myself. I went to the building department for our county to take the test to do residential electric work, paid for the permit to be pulled, had everything cleared with Missouri 811 incase I needed to dig and bought $700 worth of new wire. I pulled the old wire, saw that there was a break in the wire due to corrosion from water getting in the conduit underground so I started digging right where the conduit meets the pole that Reinhold installed just to see if there was a break in the conduit. Sure enough, there’s a small section of conduit that was crudely placed over where the old conduit underground is and the new conduit where they installed the pole. They had it lightly wrapped in what looks like some kind of landscape fabric (thought it was electrical tape at first). So there was no protection in the conduit against water getting in which was what caused the wire to corrode to the point of no longer working. Mind you, Reinhold is THE ONLY company we’ve had at our house for electrical work since owning the house. When I saw this piece of conduit being very improperly “connected”, I took pictures, and videos and sent them to the estimator who came out to give me a quote for fixing the electrical issue in the garage. He said he would give me a call back after speaking with the technicians that were there more recently to fix the electrical issue with the house as well as the ones who installed the pole in August of 2022. After speaking with them he said that none of them claimed to do that and that their technicians would never do something like that and all these denials of my claim. He then told me that he could come out and fix it for $500-$600 FOR A 3” LONG SECTION OF CONDUIT THAT NEEDED TO BE REPAIRED FROM THEIR PREVIOUS WORK. I am not the type to ask for free stuff from ANYONE, I’m incredibly happy to pay for good service by good people and I thought that’s what we were doing with Reinhold until yesterday. They completely denied the fact that their technicians made a mistake, and didn’t offer to fix the issue or anything. I was told that all of the technicians that have been on our property did not do it and that it would be $500-$600 to fix something they installed incorrectly. I understand if a technician didn’t remember every little detail from a job they did in 2022, but there is no integrity or accountability on their part with this issue. It was either done in 2022 when the new pole was installed or a few months ago when the new wire was put in with new conduit by REINHOLD."
Jacob H on June 2025
We started in 1976, to provide quality and assurance to always satisfy the customer. We guarantee all of our work, and our employees deliver this proud craftsmanship. We also offer 24 hour emergency service. With a live answering service to take your calls, we have owners and electricians that are on standby around the clock.
"I really wanted to have a good experience with Reinhold. We’ve used them in the past and they did good work, we thought… recently our garage’s power stopped working, which is fed by a panel on the pole that they installed in August of 2022. We NEVER had a single electrical issue until after that pole was installed which is starting to make sense. A few months ago we began having electrical issues in our house, so we called Reinhold because we thought they did a good job when installing the pole that fell in 2022. The technicians that were out to see what the cause of the electrical issues in the house were said that the lines under ground were corroded (which may have been true), so we accepted to let them fix it. They hand dug by the electric pole, buried conduit and ran new wire to the house and everything seemed to be fine until we recently started having issues with the electric in our garage. The location where they dug and buried the conduit for the wire going to the house is in a very close location to where the conduit goes for the wires going from the pole to the garage. I called for an estimate and was told $5,000 worse case scenario which may be understandable considering that would include cutting asphalt, trenching, new conduit, new wire and labor so I get that. Upon receiving this news I decided to just take care of it myself. I went to the building department for our county to take the test to do residential electric work, paid for the permit to be pulled, had everything cleared with Missouri 811 incase I needed to dig and bought $700 worth of new wire. I pulled the old wire, saw that there was a break in the wire due to corrosion from water getting in the conduit underground so I started digging right where the conduit meets the pole that Reinhold installed just to see if there was a break in the conduit. Sure enough, there’s a small section of conduit that was crudely placed over where the old conduit underground is and the new conduit where they installed the pole. They had it lightly wrapped in what looks like some kind of landscape fabric (thought it was electrical tape at first). So there was no protection in the conduit against water getting in which was what caused the wire to corrode to the point of no longer working. Mind you, Reinhold is THE ONLY company we’ve had at our house for electrical work since owning the house. When I saw this piece of conduit being very improperly “connected”, I took pictures, and videos and sent them to the estimator who came out to give me a quote for fixing the electrical issue in the garage. He said he would give me a call back after speaking with the technicians that were there more recently to fix the electrical issue with the house as well as the ones who installed the pole in August of 2022. After speaking with them he said that none of them claimed to do that and that their technicians would never do something like that and all these denials of my claim. He then told me that he could come out and fix it for $500-$600 FOR A 3” LONG SECTION OF CONDUIT THAT NEEDED TO BE REPAIRED FROM THEIR PREVIOUS WORK. I am not the type to ask for free stuff from ANYONE, I’m incredibly happy to pay for good service by good people and I thought that’s what we were doing with Reinhold until yesterday. They completely denied the fact that their technicians made a mistake, and didn’t offer to fix the issue or anything. I was told that all of the technicians that have been on our property did not do it and that it would be $500-$600 to fix something they installed incorrectly. I understand if a technician didn’t remember every little detail from a job they did in 2022, but there is no integrity or accountability on their part with this issue. It was either done in 2022 when the new pole was installed or a few months ago when the new wire was put in with new conduit by REINHOLD."
Jacob H on June 2025

Accent Tel USA
Accent Tel USA
Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.
"Telephone System - Install or Upgrade - For Business "
Anthony O on September 2025
Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.
"Telephone System - Install or Upgrade - For Business "
Anthony O on September 2025
Dynamic SIA, Inc.
Dynamic SIA, Inc.
Dynamic SIA, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"Tony was great--showed up on time, was clean and professional."
Chris S on December 2018
Dynamic SIA, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"Tony was great--showed up on time, was clean and professional."
Chris S on December 2018

Professional Electric Solutions
Professional Electric Solutions
Professional Electric Solutions is committed to excellence in every aspect of our business. We have over 20 years experience in residential and commercial electric installation and repair service. We offer a wide range of services - electrical for commercial and residential new construction, home additions/remodels, panel upgrades, generator installation, fixture installation, and electrical trenching services (for underground wiring). We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!
"Lead Electrician Mike Liefer and Trainee Brian Mehring were Great! Superior Craftsmen, Very personable, Friendly and explained in detail all questions I had for 2 separate projects! #1 project was changing out my 100 amp service to a 200 amp in my 113 year old home, then installing power to a new 2 HVAC units in the basement and attic. I am a retired Structural (Carpenter) Craftsman of 45 years, (20 years USAF) 25 years Civilian. Very particular! After closely watching them I realized I could not hired anyone else. PES was very reasonably priced and quick to get a quote and start date!! I recently had a siding crew with great reviews, but were a awful in their trade...WISH I would have know about PES."
Terry J on April 2020
Professional Electric Solutions is committed to excellence in every aspect of our business. We have over 20 years experience in residential and commercial electric installation and repair service. We offer a wide range of services - electrical for commercial and residential new construction, home additions/remodels, panel upgrades, generator installation, fixture installation, and electrical trenching services (for underground wiring). We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!
"Lead Electrician Mike Liefer and Trainee Brian Mehring were Great! Superior Craftsmen, Very personable, Friendly and explained in detail all questions I had for 2 separate projects! #1 project was changing out my 100 amp service to a 200 amp in my 113 year old home, then installing power to a new 2 HVAC units in the basement and attic. I am a retired Structural (Carpenter) Craftsman of 45 years, (20 years USAF) 25 years Civilian. Very particular! After closely watching them I realized I could not hired anyone else. PES was very reasonably priced and quick to get a quote and start date!! I recently had a siding crew with great reviews, but were a awful in their trade...WISH I would have know about PES."
Terry J on April 2020

SOHO Solutions
SOHO Solutions
SOHO Solutions is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business
"Excellent work and excellent rate. Will use again in a few weeks."
Leroy G on March 2022
SOHO Solutions is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business
"Excellent work and excellent rate. Will use again in a few weeks."
Leroy G on March 2022
The Mascoutah, IL homeowners’ guide to nest installation services
From average costs to expert advice, get all the answers you need to get your job done.

A blower door test can identify air leaks in your home and help boost energy efficiency. Use this blower door test cost guide to see what your test will total.

The cost to replace ductwork in a crawl space depends on accessibility, size, and whether or not your crawl space requires additional work.

Gravity furnace replacement cost can be high if there is asbestos present. Use this cost guide to help you decide if you should repair or replace it.

Understanding common duct sizes for HVAC systems can ensure proper installation for better airflow. Here's what to know about ductwork sizing.

There might be condensation on your ductwork for a variety of reasons, such as clogged ducts, a dirty air filter, or too much moisture in your ducts.

You don't always need a pro to step in, but a frozen AC unit will not fix itself. This guide teaches you how to troubleshoot an AC freeze so you can figure out whether to fix it yourself or hire a pro.
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