Furnace Repair

Furnace Repair St. Louis

+ Our History + Products + Maintenance + Request Quote

Furnace Repair & Replacement Services in St. Louis

Quality Service Since 1927

All furnace repair service fees are included in the cost of the repair, and furnace replacement and installation quotes are always 100% free. If your furnace isn't functioning to its fullest capacity or isn't heating at all, Weis' team of factory-certified and trained technicians will find the origin of the problem, guaranteed. We repair and install industry-accepted furnace brands that ensure the happiness and comfort of our customers for years to come.

Weis Comfort Systems has been repairing and installing furnaces in St. Louis, MO for over 8 decades. We make it easy and affordable to heat your home and live comfortably. Get a free repair or installation quote today by visiting our service request page.


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

Furnace Repair St. Louis

Since 1927, Weis Comfort Systems has been honored to provide St. Louis residents with exceptional Furnace Repair Services. When your furnace isn't working as it should be, or if you want to replace it with a new high-quality furnace, Weis can assist you. Our team of factory-certified and trained professionals can assist you in maintaining your old furnace so that when your home needs reliable comfortable heat in the late fall/winter or early spring, your heating unit will work perfectly.

We understand how costly it can be to purchase and install a brand new furnace system, whether it be the time required for the installation or the amount of money that is spent on labor costs. That's why our technicians use specialized techniques to increase the lifespan and capability of your heating unit to save you money on monthly bills and maintenance charges. In our endeavor to guarantee absolute satisfaction with our repairs and maintenance, we only provide leading brands and products as solutions. To get more information about our furnace repair services in St. Louis and what Weis Comfort Systems can do for your home heating needs, request a quote today!


Starting at $165
  • First System: $165
  • Additional Systems: $145 each
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Furnace Tune-Up

Starting at $89
  • First Furnace: $89
  • Second Furnace: $69
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Furnace Repair

Starting at $$$
  • Flat Rate Pricing
  • Service fee included
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Gas/Electric Furnace Repair and Maintenance in St. Louis

We have a large selection of furnaces that we offer to St. Louis residents, which means that we also service and repair a large selection of furnaces. We offer repair services on furnace brands such as Daikin®, Lennox®, WaterFurnace® and many more!

But what exactly is provided in our Furnace Maintenance? We have several custom maintenance plans that St. Louis residents can pick from and this is because our technicians are aware that no two St. Louis homes are the similar in heating demands. We provide several different quality and maintenance check points in our furnace plans, take a look!

All Furnace Maintenance includes:

  • Check thermostat settings to ensure the cooling and heating system keeps you comfortable when you are home and saves energy while you are away.
  • Tighten all electrical connections and measure voltage and current on motors. Faulty electrical connections can cause unsafe operation of your system and reduce the life of major components.
  • Lubricate all moving parts. Parts that lack lubrication cause friction in motors and increases the amount of electricity you use.
  • Check and inspect the condensate drain in your central air conditioner, furnace and/or heat pump (when in cooling mode). A plugged drain can cause water damage in the house and affect indoor humidity levels.
  • Check controls of the system to ensure proper and safe operation. Check the starting cycle of the equipment to assure the system starts, operates, and shuts off properly.
  • Check all gas (or oil) connections. This includes checking the gas pressure, burner combustion, and heat exchanger.
Malfunctioning gas (or oil) connections are a fire hazard and can lead to health issues. A dirty burner or cracked heat exchanger causes improper burner operation. Either can cause the equipment to operate less safely and efficiently.

Why Choose Weis to Repair your St. Louis Furnace?

For St. Louis businesses, reputation is crucial, and it's even more important when your providing services within a customers home where they need to be able to trust you with their family and their property. Weis Comfort Systems has been relied upon by St. Louis residents for over 80 years because the furnace repair service we provide is of the highest quality, and because we only hire experienced and trusted furnace repair technicians. Here are some of the responses and reviews our clients have had to our excellent services.

Dedicated Service

In our mission to prove our commitment to customer satisfaction, the Furnace Repair Technicians of Weis Comfort Systems undergo continual training, education, and safety courses to ensure we provide our St. Louis clients with the industry's most up-to-date and efficient practices, products, and security.

Flexible Payment

We accept a wide range of payment options, including Visa, Mastercard, cash, checks, & financing. If you want additional funding for furnace, air conditioning, or ventilation repair or 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 furnace repairmen have the experience, background, and skill set to accurately repair, install and maintain comfort systems throughout the Greater St Louis area.

Simple Satisfaction

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

Furnace Installation St. Louis

Weis Comfort Systems also offers Furnace Installation in St. Louis. If your old worn out furnace cant be repaired and is no longer performing efficiently, we can evaluate the heating system you have and the needs of your home that have to be met to guarantee that you're paired with the correct and optimal furnace that will meet all of your home heating needs. Once you've picked the unit you want for your home, our factory-certified and trained professionals can install the furnace for you.