Air Conditioner Repair

St. Louis Air Conditioner Repair Services


Life without air conditioning? Not ideal. Fortunately, Weis Comfort Systems specializes in air conditioner repair in St. Louis. For the past 80 years, clients have come to trust our professional HVAC services in Missouri and Illinois. There are several reasons to get a free air conditioner repair quote from Weis, such as an under-performing unit, rising electricity bills, or poor air quality.

Heating, ventilation, and air conditioning are investments for the home. Having tried and true HVAC maintenance specialists on your side is the first step to a more efficient, more affordable life. Our company maintains industry-leading standards in health and safety, technology, and ensuring our clients are provided with top-notch service.


Maintenance

Starting at $185
  • First System: $185
  • Additional Systems: Call Us
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A/C Tune-Up

Starting at $95
  • First A/C: $95
  • Second A/C: Call Us
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A/C Repair

Starting at $$$
  • Flat Rate Pricing
  • Service fee included
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Air Conditioning Repair in St. Louis with Weis


Weis Comfort Systems is a leading St. Louis air conditioning installation and repair company. Our experienced technicians are more than willing to walk homeowners through any HVAC maintenance in St. Louis.

Weis Heating & Cooling is dedicated to lowering your energy bills with more efficient systems, repairing and maintaining existing equipment, and taking your mind off of health and safety issues related to inadequate units. Your first step to a better home is to contact us for more information.

Current Coupons and Specials

More than A/C Repair in St. Louis:

Air quality, heating, cooling, ventilation, eco-friendly amenities, and many other factors need to be taken into account when you decide it's time to improve your home's efficiency. When it comes to HVAC systems, here are a few things to keep in mind:

  • Check thermostat settings or, even better, get a new thermostat. Most modern thermostats have programming options that let you save energy (and money) when you're not at home.
  • Tighten electrical connections to avoid any possible faults or trips. Bad connections are not only harmful to HVAC systems, they are unsafe and can reduce the lifetime of expensive units.
  • Lubricate moving parts. Friction causes grease, rust, and dirt to build up in motors. Take care of the little things or schedule Weis Comfort Systems technicians to service and repair your A/C unit in St. Louis and other areas.
  • Check the condensate drain in your central air conditioner, heat pump, or furnace. Blockages often lead to water damage if overlooked for a long enough time.
  • Check gas and oil connections. Here is where you should reach out to professionals. Our team at Weis Comfort Systems can check gas pressure and other complex parts to ensure the safety of your home.

Why Choose Weis for Air Conditioning Repair?

Weis Heating & Cooling provides proven HVAC maintenance across the board. This includes furnace installation, boiler maintenance, and of course A/C replacement and repair in St. Louis.

Weis also services a number of brands and products such as Lennox®, Aprilaire®, and Daikin®.

Weis Heating & Air Conditioning Repair in St. Louis

Weis Comfort Systems specializesin boilers, furnace installation, filtration, and A/C repair and maintenance. Busy homeowners in St. Louis should be happy to know just how useful these services are. Here are a few reasons Weis A/C repair in St. Louis and its surrounding areas is a top pick:

Dedicated to Service:

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

Financing First:

Weis Heating & Cooling offers a number of payment options. These include cash, checks, Visa, MasterCard, and financing programs you can learn more about on our pricing and financing page.

Safety is Priority One:

Safety is no joke when it comes to air conditioning repair and maintenance. At Weis, we follow leading health and safety practices to ensure top-notch A/C repair in the St. Louis area.

Client Satisfaction:

With a wide range of services, including air conditioning installation, boiler and furnace maintenance, and HVAC management, Weis is ready to prove itself as St. Louis' top A/C repair company.

We Are Local To Your Area


Air conditioning repair in St. Louis is essential during the warmer months. Between the spring rush and summer maintenance, it's important for area homeowners to contact professional HVAC service technicians to keep up with temperature control.

Weis Comfort Systems operates out of the Greater St. Louis area in cities throughout Missouri and Illinois. These include Ballwin, Clayton, Town and Country, and many others. Homeowners within our service area are also eligible for a free maintenance quote.

View Service Areas

Locations

Weis Comfort Systems

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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  • 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