10 Best HVAC Companies in Lake St. Louis, MO

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Last Updated: February 25, 2025

If you're like the typical American homeowner, over half of your energy bill (55%, per the U.S. Department of Energy) goes toward heating and cooling your home. You want to be comfortable in your Lake St. Louis home, but you also don't want to be wasting your money on inefficient cooling and heating.

A talented HVAC contractor can get your system into shape for a reasonable price, saving you money while keeping your home comfortable. That's why we've assembled this guide to the top HVAC companies in Lake St. Louis.

Top 10 Best HVAC Companies in Lake St. Louis

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SmartHouse Heating and Cooling

SmartHouse Heating and Cooling Logo

Our Rating

User Rating

6921 Olive Blvd, St. Louis, MO 63130 (314) 451-5391 callsmarthouse.com

Free quotes

Informative resources

Clear pricing policy

Reliable customer support

Prompt service delivery

Services Offered

Maintenance
Ac repair
Indoor air quality
Ductless
Ac installation
Radiant heating
Emergency services
Smart home integration
Filtration
Boiler installation
Inspection
Furnace installation
Furnace repair

B & W Heating & Cooling

B & W Heating & Cooling Logo

Our Rating

User Rating

398 E Edwardsville Rd, Wood River, IL 62095 (618) 936-0361 bwheatcool.com

Informative resources

Reliable customer support

Clear pricing policy

Free quotes

Prompt service delivery

Services Offered

Zoning systems
Boiler installation
Furnace installation
Ventilation
Emergency services
Maintenance
Boiler repair
Ac repair
Filtration
Indoor air quality
Ductless
Duct cleaning
Ac installation

Academy Air Heating, Cooling, Plumbing and Electric

Academy Air Heating, Cooling, Plumbing and Electric Logo

Our Rating

User Rating

924 Jeffco Executive Dr, Imperial, MO 63052 (314) 370-6074 academyair.com

Informative resources

Reliable customer support

Services Offered

Boiler repair
Duct cleaning
Ac repair
Emergency services
Indoor air quality
Filtration
Maintenance
Furnace repair
Ductless
Ac installation
Boiler installation
Furnace installation

Vitt Heating & Cooling

Vitt Heating & Cooling Logo

Our Rating

User Rating

4719 Morgan Ford Rd, St. Louis, MO 63116 (314) 347-3389 vittheating.com

Informative resources

Prompt service delivery

Free quotes

Services Offered

Indoor air quality
Ductless
Maintenance
Filtration
Furnace repair
Furnace installation
Duct cleaning
Boiler repair
Ac repair
Ac installation
Inspection
Boiler installation

Polar Aire Plumbing, Heating & Air Conditioning

Polar Aire Plumbing, Heating & Air Conditioning Logo

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User Rating

2227 Vandalia St, Collinsville, IL 62234 (618) 772-7007 callpolaraire.com

Clear pricing policy

Prompt service delivery

Reliable customer support

Informative resources

Free quotes

Services Offered

Ac installation
Ductless
Emergency services
Inspection
Boiler installation
Maintenance
Indoor air quality
Furnace repair
Boiler repair
Furnace installation
Ac repair

Faszold Heating and Cooling

Faszold Heating and Cooling Logo

Our Rating

User Rating

1613 E Terra Ln, O'Fallon, MO 63366 (636) 735-7842 faszold.com

Clear pricing policy

Free quotes

Reliable customer support

Informative resources

Services Offered

Boiler installation
Ac repair
Emergency services
Ventilation
Filtration
Indoor air quality
Furnace installation
Inspection
Ac installation
Ductless
Maintenance
Furnace repair

Averill Heating & Air Conditioning

Averill Heating & Air Conditioning Logo

Our Rating

User Rating

10645 Liberty Ave, St. Louis, MO 63132 (314) 427-3825 averillheatcool.com

Free quotes

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Furnace installation
Furnace repair
Boiler repair
Maintenance
Boiler installation
Ac installation
Inspection
Ductless
Emergency services
Indoor air quality
Ac repair

B & B Heating & Cooling

B & B Heating & Cooling Logo

Our Rating

User Rating

1955 Washington St, Florissant, MO 63033 (314) 838-9800 bbheatingcooling.com

Clear pricing policy

Reliable customer support

Informative resources

Services Offered

Indoor air quality
Emergency services
Maintenance
Zoning systems
Furnace repair
Ac installation
Ventilation
Furnace installation
Boiler installation
Inspection
Ac repair
Ductless
Filtration

All Air Systems Heating & Cooling

All Air Systems Heating & Cooling Logo

Our Rating

User Rating

111 Prospect Ave # 103, Kirkwood, MO 63122 (314) 966-5600 callallair.com

Informative resources

Free quotes

Reliable customer support

Clear pricing policy

Services Offered

Boiler installation
Ac repair
Furnace installation
Inspection
Furnace repair
Maintenance
Ductless
Ac installation
Indoor air quality
Emergency services
Boiler repair

Vogel Heating & Cooling

Vogel Heating & Cooling Logo

Our Rating

User Rating

1642 Manufacturers Dr, Fenton, MO 63026 (314) 408-6068 vogelheating.com

Informative resources

Reliable customer support

Free quotes

Services Offered

Emergency services
Indoor air quality
Ac installation
Maintenance
Furnace installation
Furnace repair
Ac repair
Duct cleaning
Ductless
Zoning systems
Boiler repair
Boiler installation
Filtration
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

If your home's HVAC system is malfunctioning or nearing the end of its lifespan, you may need to hire an HVAC contractor for maintenance or replacement. Watch for these common indicators that your system needs professional attention:

  • Frequent breakdowns and need for repairs
  • Strange noises when turning on
  • Refrigerant leaks
  • Poor air circulation or uneven heating/cooling
  • Unusually high energy bills
  • Corrosion, cracking, or rust
  • Thermostat malfunctions or temperature control issues
  • An HVAC system that's over 15 years old

If you notice any of these HVAC issues, have a technician inspect your system. A local professional can diagnose problems and determine whether repairing or getting a new HVAC unit is the best solution.

Cost of HVAC Installation and Maintenance in Lake St. Louis

What you spend on HVAC installation or maintenance depends on your system type. Common HVAC unit styles include the following:

  • Split or mini-split: If your home's ductwork can't accommodate a central HVAC system, you probably have a split or mini-split system. Split systems have interior units in each room to regulate temperature. These indoor units all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions very similarly to a standard split system. It has the benefit of being able to utilize either electricity or gas for power.
  • Heat pump: Heat pumps work by moving hot and cold air between your home and the outdoors. These systems don't generate heat or air conditioning themselves, and are better for more moderate climates.
  • Packaged heating and air: Packaged HVAC systems are a smart choice for smaller houses. They have a single cooling and heating unit, usually in an attic or basement. This unit is often space-saving, energy-efficient, and easy to maintain.

HVAC costs differ based on the services needed. HVAC systems are complicated and may need multiple types of maintenance. Costs for common jobs are as follows:

HVAC Unit TypeCost
Split$1,882-$4,798
Hybrid Split$3,814-$7,026
Heat Pump$2,953-$30,089
Packaged Heating and Air$247-$412

Ways to Save Money on HVAC Costs

It’s important to take care of HVAC repairs and replacements when they are required, though they can be expensive. The good news is that homeowners have ways to reduce gradual wear and tear and reduce the frequency of breakdowns.

  • Change filters regularly. Switching out or cleaning your air filters every 30–90 days helps air flow efficiently through your HVAC system. You should also try to prevent dirt and debris from building up around the outside areas of your system.
  • Monitor for potential problems. Monitoring your system for issues — for example, by checking your thermostat and energy bills routinely — helps you get ahead of problems before they get too expensive.
  • Keep your system clean. Cleaning your ductwork, grills, indoor evaporator coil, and condenser fan blades regularly helps keep your HVAC system working efficiently and lowers the risk of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it begins to look dirty.
  • Change the position of your blinds seasonally. Leaving your blinds open during the winter allows passive solar heating to warm your home. Closing the blinds in warmer seasons helps prevent some heat from getting inside. Doing both helps reduce the strain on your HVAC system.
ServiceCost
Filter Replacement$62-$165
Condensor Cleaning$1,236-$3,707
Thermostat Repair$82-$206
Ductwork Cleaning$395-$988

How To Choose a Local HVAC Company

Knowing the right things to look for in an HVAC company is key for a smooth installation or repair. Established providers with certified technicians can offer assurance your HVAC system will deliver consistent coolig and heating year-round.

Compare Multiple Bids

Contact at least three HVAC contractors for quotes. Describe your issues and schedule an in-person inspection if possible. Compare providers' diagnoses, suggested repairs, estimated costs, warranties, and timeframes. Avoid providers that pressure you or demand upfront payment.

Check Credentials

Choose an HVAC company with well-trained technicians who have proper licensing and experience. HVAC contractors in all states have federal requirements from the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, contractors must pass an exam (the specific exam depends on the kind of equipment they plan to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled at the state level.

Missouri doesn't have state-level licensing requirements for HVAC contractors; however, most municipalities have local requirements. It's in your best interest to check with your local government to understand requirements for licenses like HVAC Contractor or HVAC Journeyman Contractor. You can also verify that a company holds a valid business license. You should also look at a company's reviews and complaints on sites such as the Better Business Bureau (BBB), Google Reviews, and Yelp. Pick a company with glowing feedback and stories of satisfied customers.

Understand Work Details

Always make sure you understand what a company’s process looks like. When HVAC repairs are needed, ask your provider to list which parts need replacement and why. Confirm that your technician will clean and test the system afterward to guarantee proper operation. When replacing your HVAC, request that the installation company describe the new brand, energy efficiency, estimated installation time, features, and model. Before work starts, ask about the process your provider will use to properly size the new system for your home and how much it will cost.

Compare Warranties

A reputable HVAC company will stand behind its repair work and installations with a warranty. The longer and more comprehensive the coverage terms, the better. Carefully review warranty terms for each contractor and choose the company that provides the best protection at a reasonable price.

Get Quote in Writing

Always get quotes for HVAC service in writing before committing to a provider. An itemized quote should cover both labor and materials. Make sure you agree to all terms before signing a contract.

Frequently Asked Questions About HVAC in Lake St. Louis, MO

You should have your HVAC system inspected approximately twice annually. After the inspection, your technician will inform you if any services are required. You should also call a technician if you notice new issues such as leaks, strange noises, or unusual smells. If your system has ductwork, you should have it inspected every few years.

Normally, it's smart to have your HVAC system inspected in the spring and fall, as these times tend to be less busy. This also helps make sure your system is prepared for the summer and winter, when it probably sees the most use.

You can save energy throughout the year by reducing the amount of power your HVAC system uses to maintain your home's temperature. Always keep your thermostat as close to the outside temperature as you can, and avoid making drastic changes — adjust it only a few degrees at once. You may also consider getting a smart thermostat.

Generally, HVAC installation or replacement takes between one and three days for the entire system. Installing or replacing an air conditioning unit or a furnace can take as little as half a day or as much as two days. The exact amount of time will be based on factors like the size of your home, how easily accessible different areas are, and whether your technician runs into any problems.

For a 2,000-square-foot home, you should look for around 2.5 to 5 tons of air conditioning capacity. For a house over 1,000 square feet, central air will be more effective for cooling than window units.

For a 2,000-square-foot home, you should also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units).

Your HVAC company may provide financing options via a third-party lender, or you may choose to obtain your own loan. It's a good idea to discuss payment options with your HVAC company and a financial advisor to make sure that you're choosing the best option for you.

There are a number of ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and change or clean your air filters on a regular basis.
  • Have regular inspections to take care of problems as they come up.
  • Make sure your doors and windows are well-sealed and keep your attic well-ventilated.
  • Install a smart thermostat. If you don't want to or can't buy one, try to keep the temperature indoors as close to the outside temperature as is comfortable.
  • When replacing part of your system, see if there are Energy Star-certified or similar environmentally friendly options.

Other Lake St. Louis, MO Home Services

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