HVAC Companies in Frontenac. For nearly 100 years, Weis Comfort Systems, a seasoned Frontenac, MO HVAC company, has brought clients high quality and affordable heating and cooling repair services. Weis’ HVAC contractors combine industry-leading practices and brands to optimize heating, vacuum, and air conditioning units’ reliability and efficiency.

As one of the preferred HVAC companies in Frontenac, MO, Weis Heating and Cooling delivers high-end service in a variety of areas. Frontenac HVAC repair necessitates trained professionals with the right tools, experience, and commitment to safety. Providing Frontenac businesses and homeowners with customer-preferred pricing and quality work, Weis Heating and Cooling’s services include:

Providing these services and others, Weis Heating and Cooling is one of the most well-rounded HVAC companies in Frontenac, MO. We will explore more about our capabilities and services further down this page. As always, you can contact us for additional information.

HVAC Companies in Frontenac, MO

For people who are Frontenac home or business owners, it’s important to have a seasoned HVAC company on hand. Weis Comfort Systems is a flexible, local, and convenient HVAC repair and installation company that services Missouri and Illinois customers. Another reason Frontenac property owners prefer Weis Comfort Systems is our flexible long- and short-term financing options.

Weis Heating and Cooling is willing to help upgrade, maintain, or replace your HVAC systems. Our contractors are trained, factory-certified professionals that answer any questions you may have about Weis Comfort Systems HVAC repair and installation services. Get more info and a service quote today.


Frontenac HVAC Companies like Weis Comfort Systems know how difficult it is for some homeowners to manage 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 thermostat to make sure the HVAC system stays at a reasonable and comfortable level. Homeowners can cut down costs by investing in automated thermostats to keep their homes warm in the winter and cool in the summer, and even turn on at specific times to lower energy consumption.
  • Check all electrical connections. You can also measure voltages and currents of a system’s motors. Bad electrical connections may cause unsafe operation, poor efficiency, and even electrical fires. Frontenac HVAC companies like Weis note that poorly-functioning equipment reduces a systems’ life expectancy. Also check all of the system’s oil/gas connections and controls.
  • Lubricate moving parts. "Dry" parts cause friction and rust. This usually results in increased workload and further reduces your system’s efficiency. You can always contact Weis for more information about HVAC maintenance in Frontenac.
  • Inspect the condensate line. Your air conditioner unit has to handle water. Ask your air conditioning contracting company about this step or look at these guidelines on American Home Shield.

It’s important to monitor and care for your HVAC systems. Weis, one of the top HVAC companies in Frontenac, is here to help homeowners maintain HVAC systems to improve efficiency, reduce costs, and increase longevity. After all, who wants to deal with a heating or cooling problem in the middle of summer or winter? Contact Weis to learn more or request service.

We recommend home and property owners to schedule seasonal HVAC maintenance checkups to avoid serious problems. If you’re looking for HVAC companies in Frontenac, MO, give us a call. (636) 266-2290

Frontenac, MO, HVAC Companies | Why Choose Weis?

For Frontenac HVAC companies, reputation is everything. The expert Frontenac HVAC contractors at Weis have proven their quality in the past decades as a top choice for home and business owners needing HVAC maintenance and repair. You can count on us to protect your family and home’s HVAC interests. Learn more about Weis’ past service in these responses and HVAC contractor reviews. Below you can find a handful of the goals we follow to ensure Weis is your Frontenac HVAC company of choice:


A leading Frontenac HVAC repair contractor, Weis knows the importance of quality service. We strive to provide the best we can including certified HVAC contractors, safe and efficient equipment, and no hassle work.


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


Weis relies on state-of-the-art safety protocols, products, and practices in addition to hiring methods that ensure high-quality HVAC contractors with experience, solid backgrounds, and other skills. Safety is a cornerstone of our Frontenac HVAC company.


Weis Comfort System’s team of highly-qualified, local HVAC contractors in Frontenac, MO, guarantee affordable, timely, no-hassle AC and furnace repair and installation. Let Weis know how we can help. Request service today.

Contact Your Frontenac HVAC Contractor Today

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