HVAC Companies in St. Louis. For nearly 100 years, Weis Comfort Systems, a seasoned St. Louis, MO HVAC company, has provided customers high quality and affordable heating and cooling repair services. Weis’ HVAC contractors utilize industry-leading techniques and top brands to optimize heating, vacuum, and air conditioning units’ reliability and efficiency.

As one of the most preferred HVAC companies in St. Louis, MO, Weis Comfort Systems prides itself on high-end service in various areas. St. Louis HVAC repair requires trained professionals with the right tools, experience, and commitment to safety. Offering St. Louis businesses and homeowners with unbeatable pricing and quality work, Weis Comfort Systems’ services include:

Offering these services and more, Weis Comfort System is one of the most customer-friendly HVAC companies in St. Louis, MO. We’ll discuss more about our services and capabilities throughout this page. As always, please contact us for additional information.

HVAC Companies in St. Louis, MO

For those who are St. Louis business or home owners, it is important to have a seasoned HVAC contractor on hand. Weis Comfort Systems is a convenient, flexible, and local HVAC repair and installation company that serves Missouri and Illinois clients. Another reason St. Louis property owners prefer Weis Comfort Systems is our flexible short- and long-term financing options.

Weis is ready and willing to assist replace, maintain, or upgrade your HVAC systems. Our contractors are trained, factory-certified professionals that can answer any questions you may have about Weis Heating and Cooling’s HVAC repair and installation services. Request more info and a free quote today.


St. Louis HVAC Companies like Weis Comfort Systems understand how challenging it is for some homeowners to handle HVAC repairs. Below you will find a maintenance checklist to give you with a few go-to checks and tasks to keep your cooling, heating, and other systems functional:

  • Check your thermostat settings to ensure your cooling and heating system maintains at a reasonable and comfortable level. You can cut down costs by investing in automated thermostats to keep their homes cool in the summer and warm in the winter, and even turn on at set times to lower energy consumption.
  • Tighten all electrical connections. You should also measure voltages and currents of a system’s motors. Faulty electrical connections may result in unsafe operation, poor efficiency, and even electrical fires. St. Louis HVAC contractors like Weis Comfort Systems point out that poorly-functioning equipment lowers a systems’ life expectancy. Also check all of the HVAC system’s controls and oil/gas connections.
  • Lubricate moving components. "Dry" parts lead to friction and rust. This may result in increased workload and further decreases a system’s efficiency. You can always contact Weis for additional info about HVAC maintenance in St. Louis.
  • Inspect the condensate line. Your air conditioner unit needs to manage water. Ask your air conditioning contracting company about this process or look at these guidelines on American Home Shield.

It is important to care for and monitor your heating and cooling systems. Weis Comfort Systems, one of the top HVAC companies in St. Louis, is here to help homeowners maintain HVAC systems to reduce costs, improve efficiency, and extend their longevity. Besides, who wants to encounter an HVAC problem in the middle of summer or winter? Contact Weis to learn more or request service.

Weis recommends property and home owners to schedule seasonal HVAC maintenance checkups to bypass serious issues. If you are looking for HVAC companies in St. Louis, MO, give us a call. (636) 266-2290

St. Louis, MO, HVAC Companies | Why Choose Weis?

For St. Louis HVAC companies, reputation is important. The expert St. Louis HVAC contractors at Weis Heating and Cooling have proven their work ethic over the years as the best choice for home and business owners in need of HVAC repair and maintenance. You can trust us to protect your home and family’s HVAC interests. Learn more about our past service in these responses and HVAC contractor reviews. Below are a handful of the goals we follow to ensure we are your St. Louis HVAC contractor of choice:


A leading St. Louis HVAC repair contractor, Weis Heating and Cooling knows the importance of quality service. We want to provide the best in the business including certified HVAC contractors, efficient and safe brands, and no hassle results.


Weis Comfort Systems is well aware of financial constraints put on business and home owners. Weis Heating and Cooling accepts major credit cards (Visa, Mastercard, etc.), checks, and cash. You can learn more about our pricing and financing for AC repair, boilers replacement, maintenance, and other services. We also offer coupons and rebates.


Weis utilizes state-of-the-art products, practices, and safety measures in conjunction with hiring methods that ensure high-quality HVAC contractors with excellent backgrounds, skills, and years of experience. Safety is a cornerstone of our St. Louis HVAC company.


Our team of highly-qualified, local HVAC contractors in St. Louis, MO, guarantee timely, no-hassle, and affordable HVAC repair and installation. Let Weis Heating and Cooling know how we can help. Request service now.

Contact Your St. Louis HVAC Contractor Now

As customers come to find out, Weis Heating and Cooling is one of the top HVAC companies in St. Louis, MO. We provide homeowners with HVAC repair, maintenance, and installation while keeping service as a priority. Contact Weis Comfort Systems now for additional information about our St. Louis HVAC contractors and services.