Carbon Monoxide

St. Louis Carbon Monoxide Detection Services


Carbon Monoxide Prevention and Detection. While many homeowners and renters alike have one or two Carbon Monoxide detectors within their homes, Carbon Monoxide Prevention is essential to having your home safe as well as your family. First, we must understand what Carbon Monoxide is to truly understand the dangers of it. Carbon Menoxide is a colorless, odorless, gas that's caused by an unburned material containing carbon. Some of these materials are gasoline, natural gas, propane, wood, and coal. These elements can leak into your home and cause significant injuries to you and your loved ones.

Carbon Monoxide Poisoning Symptoms

Some ways to prevent Carbon Monoxide from entering the home, you have to know what can burn the fuel to create Carbon Monoxide. When your car, fireplace, generator, gas stove, or furnace is running, it produces the by-product, Carbon Monoxide. As long as you properly maintain these appliances and keep everything well ventilated, the dangers of Carbon Monoxide will be significantly lower. At lower concentrations, victims may experience such symptoms as a headache, dizziness, weakness, nausea, vomiting, chest pain and confusion. But at higher levels, Carbon Monoxide can quickly cause a loss of consciousness, even death. That is why it is imperative that you have the right Carbon Monoxide Detection System in your home.

Health and Safety in St. Louis.


For more than eight decades, Weis Comfort Systems has offered industry-leading HVAC Health and Safety systems to St. Louis, MO residents. If you have worries about the filtration system, carbon monoxide monitoring, humidity or allergens in your home, Weis Comfort can help.

With properly functioning equipment, this can mean cheaper bills, fewer maintenance issues, and the satisfaction that your home will be as comfortable as possible year round.

Current Coupons and Specials

Dedicated to Service:

At every level, Weis strives to excel at customer satisfaction. Our HVAC carbon monoxide technicians are dedicated to continuing education, safety, and improving the comfort and efficiency of your home.

Flexible Payment:

We offer a variety of payment options, including Visa, Mastercard, cash, checks, and financing. If you want additional funding for air conditioning, ventilation repair, or furnace installation services, please visit our pricing and financing page.

Commitment to Safety:

We have paired state-of-the-art products, safety, and practices with thorough hiring methods to ensure that our team of HVAC contractors have the experience, background, and skill set to accurately repair, install and maintain comfort systems throughout the St Louis area.

Simple Satisfaction:

Weis Comfort Systems is licensed and insured, and our team of expert technicians performs HVAC repair, maintenance, and installation with high detail to ensure that our AC, furnace, and ventilation services are up to code and built to last.

HVAC Maintenance St Louis


Weis Comfort Systems offers various HVAC maintenance programs at low, reasonable prices. See our pricing and financing page for more information.

Please view our other HVAC products and services in Missouri and Illinois. Furnace Installation, Furnace Repair, Air Conditioner Installation, or browse our Brand and Products. We also encourage you to check out our rebates program and other HVAC services.

View Service Areas

Locations

Weis Comfort

1591 Fenpark Dr.
Fenton, MO 63026
Hours: M-F 8:00AM - 4:30pm

Weis DeRousse

124 N. Main
Red Bud, IL 62278
Hours: M-F 8:00AM - 4:30pm

Weis Keil-Forness

Located In:
Belleville, IL 62220
Hours: M-F 8:00AM - 4:30pm

Read Our Reviews

  • Excellent Service

    We have been customers of Weis for over 40 years. We have never even considered calling a competitor because we have never had too. We have always received excellent service and the technician's are outstanding.

  • Fixed Right The First Time

    Could not ask for better service!! Frank was prompt, knowledgeable and very courteous! Weis Comfort Systems was quick to respond and the price was affordable. The Knowledge of their staff is always spot on, quick but fixed right the first time. Thanks Weis and Frank!!

  • Excellent Customer Service

    As a long-time Weis customer, I consider it an exceptional company. They are competent, dependable, efficient and courteous. Weis has installed and serviced our heating and cooling equipment for nearly 20 years. When our thermostat went out on the coldest night of the year, Rich got us warmed up again in short order. Rich is […]

  • Clean, Neat, Pleasant

    Service person arrived during appointment time frame, phoned ahead, worked in a timely manner, was clean, neat, pleasant, and wore protective boots inside the house (raining outside.)

  • Highly Trained and Professional

    I have been doing business with Weis Comfort Systems for over 10 years and would recommend them to anyone. They are professional in their approach to customer service. We have had various personnel come to our home from Weis and without exception they are highly trained and professional.

  • They Never Disappoint

    Our family has been doing business with Weis for several years and they never disappoint. The owner and employees are top notch at what they do and consistently deliver a high level of customer satisfaction.

  • I Highly Commend Them

    This crew timely arrived ,went immediately to work, and completed the new A/c Installation within the time frame they had estimated. They did a fine job and I highly commend them for it. Your company was beyond belief in getting my new AC on line as quickly as you did!! When it failed,it was 90+ […]

  • Friendly and Courteous

    I have my heat pump serviced twice a year by Weis Derousse in Red Bud and I always request Frank to do the job. He is friendly and courteous and he was the one who put the unit in years ago. Jamie in the office is also a pleasure to talk to.

  • Impressive

    Great Service, awesome price,great job, awesome people. If the ratings will go from 1 to 7 stars, I will rate them 7, 5 stars is not enough for the service, professionalism , quality of work, and friendliness the Weis employees show us.One word can describe Weis " IMPRESSIVE "

  • Pleased With The Service

    Weis installed a new system for me two years ago and fulfilled the contract as agreed. Since then, they have serviced it. The service calls have been within the stated hours and the serviceman has been professional and helpful. Front office communications have improved over the last year. I'm currently pleased with the service.

  • Certainly Recommend Them

    Weis was able to send someone out the same day I called, which was good since it was in the mid 90s and my AC wasn't working at all! Rich was able to diagnose and fix my AC unit in under 30 minutes, getting our house back to being cool again. They were very upfront […]

  • Knew What He Was Doing!

    Great Service! Called on a 93 degree Sunday when my 91 year old father's air went out. Weis Comfort Systems arrived within a couple of hours, had the unit fixed and cooling within less than an hour of arriving. Frank was polite, friendly and most important knew what he was doing!

  • An Honest Job

    Jim was very courteous and professional about what he would be checking on my air conditioners. Out of the 3, I only needed one part. I felt he did an honest job.

  • I would Recommend Weis

    we purchased a ****** A/C and Furnace thru Weis Comfort Systems this past June. Everything went very smooth from the very beginning of the process thru installation. Everyone was very professional and respectful. I would recommend Weis Comfort Systems to anyone.

  • Great Company

    Arrived at the time told, very professional. Quickly found the problem and had the parts on the truck. Problem fixed and the house was cooling down within an hour. Great company, have used them for over 10 years, always happy with the service.

  • Very Pleased

    We needed a new furnace and a/c for our home and looked into several different options including the company we had been using for the past 15 years. In the end we went with Weis. Weis came recommended by a coworker and we have no personal or professional relationship with the company. The bid process […]

  • Pleasant and Helpful People

    Weis Comfort Systems Inc. has pleasant and helpful people working at their office and in the field. Rich was the tech that visisted my home today to do a furnace check. He arrived at the earliest part of his suggested time. He was quick, neat, and I felt comfortable with him being in my home.

  • Heartily Recommend Their Services

    We have been a customer of Weis for over 40 years. Every installation or repair has been completed with efficiency and timeliness. We heartily recommend their services.

  • Excellent Workmanship

    We took advantage of the annual mtce. pkg. with Weis. They contacted us to remind us of the furnace mtce and we set up an appt. The technician was courteous and professional. We have used Weis for all our mtce needs and on occasion a repair or two. Not only did they install this furnace […]

  • Very Professional and Efficient

    Weis comfort systems is a very professional and efficient business, yet friendly and customer oriented. I would in the future and have in the past heighly recommend this company.

  • Weis is a Great Service

    weis is a great service. prompt, helpful, clean,l friendly, do a great job. i look forward to seeing them.

  • Go to Weis

    Great job as always. If you have heating or AC concerns go to Weis.

  • These Folks Are Pros!

    Thanks to Jim E and the Weis team for the long day of work today! The house is finally cooling down and we'll sleep better tonight because of your work. These folks are pros!

  • Serviced Our Furnace for Many Years

    Frank is very knowledgeable about his job and always leaves everything the way it was. No cleaning up after him. If you have a question he will explain the answer in a way that you can understand. He has serviced our furnace and A/C for many years

  • Totally Professional

    Weis is totally professional in all aspects of their services. We have been using this company for decades for regular maintenance, emergency calls and for installation of new equipment. They arrive prompltly and leave the work areas very, very clean. We also think Weis is most honest with their repair assessments and their charges.

  • Always on Time

    We have been a customer since we built our home in 2004. We would recommend Weis Comfort to anyone. Any concern we have had they are there to address it. Wonderful workers always on time and represent the company in a professional manner.

  • Best in the Business

    Jim Wanko and the pros at Weiss are the best in the business. They do exactly what they say they will do, when they say they will do it. I love my new furnace, particularly right now! My house has been around a long time, and I always learn something new about the systems, my […]

  • Go-To HVAC Guys

    Hired these guys on a recommendation to take a look at my furnace. They don't overcharge, Show up on time, and are unobtrusive. Even if they didn't have a loyalty program, they'd still be my go-to HVAC guys.

  • Thank You Guys

    Had my install today. Daikin air conditioner working great. House nice and cool. Humidity enough to make house very comfortable. Thank you guys for doing a fine job.

  • I Highly Recommend Weis

    This company does its job quite well – in all areas from regular maintenance to repair to installations of new equipement. I highly recommend Weis.

  • Prompt and Thorough

    Prompt and thorough.

  • People You Can Count On

    Kent came out and found some pretty glaring problems created by the last company that installed our AC unit. He got us straightened out and fixed what could have been some very costly damage down the road. It's nice to have people you can count on to do the job right!

  • Prompt, Professional Service

    Prompt, professional service by a company (**************) that has serviced our HVAC equipment for years. Thanks!

  • Very Good

    Timely, professional service, groomed service person. Routine and emergency service have been very good.

  • Excellent

    excellent – here on time -did everything that was expected and was pleasant.

  • I Would Recommend

    I WOULD RECOMEND THE SERVICES OF WEIS COMFORT SYSTEMS TO ANYONE.

  • I Would Recommend

    I WOULD RECOMEND THE SERVICES OF WEIS COMFORT SYSTEMS TO ANYONE.

  • Convenient and On Time

    Very convenient and on time. Polite and easy to work with.

  • Excellent Service

    Excellent service, and support. ****** was very professional.

  • Very Pleased

    I had a 2-hour window for my air conditioner maintenance appointment and Rich actually showed up early! So nice to not have to sit around to the last minute. He was very professional and friendly. Weis, and specifically, Rich, were recommended to me by a friend who has been using their services for years and […]

  • Absolute Pros

    We've been Weis customers for all of the 26 years we've owned our home. Mostly it was for checkups and installation of a humidifier. We purchased a new HVAC system two years ago that came with a maintenance package for two AC checkups and two Heater checkups. We just had the second AC checkup and […]

  • Strongly Recommend Them

    The company always does well to remind you of your updates when you need to have your services checked. They always send out very nice men who know what they are doing and explain things to you. I would very strongly recommend them.

  • I Recommend Weis

    When looking for HVAC – the only thing I want to know initially is price on these reviews. So people out there who want to know – Weis is $2300 cheaper for AC and Furnace combo. We have a smaller house and only need 14 Seer – AC and 90% efficiency on furnace. Mr. Forness […]

  • They Looked Out For Me

    A day after an appointment to fix the two-year-old A/C in my new home, the friendly folks at Weis notified me that the previous homeowners had purchased a 10-year parts/service warranty…and they had already refunded the repair fee for the work my unit had needed. Unexpected, and very welcome – they looked out for me […]

  • Highly Satisfactory

    Highly satisfactory. Friendly and courteous service

  • Always Professional

    Always professional, on time and great service!!

  • Reliable company

    Excellent service, on-time, and thorough, and personable. Weis Comfort Systems is a fine, reliable company for your HVAC needs.

  • I am extremely pleased

    Superior Service! Technician truly knows my GeoThermal system. Weis has been performing my repair and preventative maintenance actions for a couple of years & I am extremely pleased.

  • Five Star Review

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  • Five Star Review

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  • We could not be happier!

    We have used Weis Comfort Systems for over 12 years for all of our heating and cooling needs, in two homes. They are always courteous, quick, honest, fair, and efficient! They just installed a new furnace and air conditioner last winter and we could not be happier! Fabulous company!

  • All calls were handled professionally

    Weis has been servicing our furnace and air conditioner for decades. Mostly the service calls are for regular maintenance. A few have been for repair. All calls were handled professionally. I can't remember having to call a second time because the problem was not corrected. Weis also installed a new furnace and air conditioner during […]

  • Customer Service is Excellent

    Bill is very thorough as he has been in the past servicing my furnace. His customer service is excellent. Always willing to answer any question I may have on the operation of furnace,thermostat.  He is an asset to have representing the Weiss Company.

  • Efficient & Practical

    Customer friendly and knowledgeable. Rich was efficient and practical. I appreciate the service and customer service!

  • Friendly & Courteous

    I have my heat pump serviced twice a year by Weis DeRousse and I always request Frank because he is the one who put the unit in years ago. I trust him to do a great job and he does. He is friendly and courteous. Jamie is very friendly always when I call the office.

  • Impressive

    Great Service, awesome price,great job, awesome people. If the ratings will go from 1 to 7 stars, I will rate them 7, 5 stars is not enough for the service, professionalism , quality of work, and friendliness the Weis employees show us.One word can describe Weis " IMPRESSIVE "

  • A Great Company

    Weis was great as usual. I had forgotten the scheduled service until I received a quick phone call that Bill was on his way. No problem. Friendly and affable as always, he carried out his duties and pronounced everything 'okay.' This is a great company and watches my comfort all year long.

  • Very Reasonable

    Weis was able to send someone out the same day I called, which was good since it was in the mid 90s and my AC wasn't working at all! Rich was able to diagnose and fix my AC unit in under 30 minutes, getting our house back to being cool again. They were very upfront […]

  • Excellent Service

    They provided prompt and excellent service when AC quit working. No charge, since system is still under warranty.

  • Courteous & Professional

    The service personnel have been to my home several times since we moved to our new home in 2014. We were unfamiliar with geo-thermal and the people at Weis have explained the workings of the system and backup heat or cooling. Repair men are always courteous and professional. Good to have Weis for services.

  • Five Star Review

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  • Five Star Review

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See All Reviews

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  • Weis Comfort Systems

    5 63 reviews


    1591 Fenpark Dr.
    Fenton, MO 63026

    636-431-5032

    Mon - Fri 8:00am - 4:30pm


    Contact Us
  • Weis DeRousse

    5 63 reviews


    124 N. Main
    Red Bud, IL 62278

    618-228-3307

    Mon - Fri 8:00am - 4:30pm


    Contact Us
  • Weis Keil-Forness

    5 63 reviews


    301 N Illinois St
    Belleville, IL 62220

    618-228-3523

    Mon - Fri 8:00am - 4:30pm


    Contact Us
  • Gaines HVAC

    5 63 reviews


    5120 Northrup Ave
    St. Louis, MO 63110

    314-501-5444

    Mon - Fri 8:00am - 4:30pm


    Contact Us

$30 off any maintenance visit

Contact Weis today to learn more about our maintenance HVAC plans.

$50 off a whole-home humidifier

Don't hesitate to contact Weis for more details.

Pricing + Financing:


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    Is Now Part of the

    Weis Comfort Systems Family!

    I understand

    Need help? Contact Us