Expert Advice On Improving Your Home

10 Best HVAC Companies in St. Charles, MO

Get matched with a top local pro.
Join over 640 homeowners that have gotten a free quote in the past week.

Written By Bradford Cuthrell

Last Updated February 2024

On average, 55% of the energy used in American homes is for heating and cooling, according to the Department of Energy. With the cost of living in St. Charles, you're likely eager to reduce your energy bills.

Use our guide to the top HVAC companies in St. Charles to find the best choice for you and your home. Our topic contractors can help you reduce your bills while still staying comfortable.

Top 10 Best HVAC Companies in St. Charles

Jerry Kelly Heating & Air Conditioning

Jerry Kelly Heating & Air Conditioning Logo

Our Rating

User Rating

Write a Review
4631 N St Peters Pkwy, St Peters, MO 63304 (636) 757-8506 jerrykelly.com

Free quote

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

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

Averill Heating & Air Conditioning

Averill Heating & Air Conditioning Logo

Our Rating

User Rating

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

Reliable customer support

Clear pricing policy

Prompt service delivery

Free quote

Informative resources

Services Offered

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

Goldkamp Heating & Cooling

Goldkamp Heating & Cooling Logo

Our Rating

User Rating

Write a Review
890 N Lafayette St, Florissant, MO 63031 (314) 839-3332 goldkamphvac.com

Free quote

Clear pricing policy

Prompt service delivery

Services Offered

Duct cleaning
Indoor air quality
Maintenance
Ductless
Ac repair
Zoning systems
Ac installation
Filtration
Furnace repair
Furnace installation

B & B Heating & Cooling

B & B Heating & Cooling Logo

Our Rating

User Rating

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

Informative resources

Clear pricing policy

Services Offered

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

Reliable Heating & Cooling, Inc.

Reliable Heating & Cooling, Inc. Logo

Our Rating

User Rating

Write a Review
8463 Delport Dr, St. Louis, MO 63114 (314) 513-0385 trustreliable.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Informative resources

Free quote

Services Offered

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

No Problem Heating and Cooling

No Problem Heating and Cooling Logo

Our Rating

User Rating

Write a Review
1565 Kisker Rd, St Peters, MO 63304 (636) 400-7776 npmheatingandcooling.com

Free quote

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

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

Arch Air Services

Arch Air Services Logo

Our Rating

User Rating

Write a Review
3582 Adie Rd, St Ann, MO 63074 (314) 428-4328 archairservices.com

Free quote

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Furnace installation
Ac repair
Ventilation
Ac installation
Maintenance
Inspection
Ductless
Furnace repair

Cisco Heating & Air Conditioning Inc

Cisco Heating & Air Conditioning Inc Logo

Our Rating

User Rating

Write a Review
3727 N St Peters Pkwy, St Peters, MO 63376 (636) 477-0100 ciscoheating.com

Informative resources

Clear pricing policy

Prompt service delivery

Reliable customer support

Free quote

Services Offered

Ac installation
Furnace installation
Maintenance

Future Aire Heating & Air Conditioning

Future Aire Heating & Air Conditioning Logo

Our Rating

User Rating

Write a Review
400 Chesterfield Center #400, Chesterfield, MO 63017 (636) 938-5290 futureaire.com

Free quote

Reliable customer support

Clear pricing policy

Informative resources

Prompt service delivery

Services Offered

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

Agers Heating & Air Conditioning

Agers Heating & Air Conditioning Logo

Our Rating

User Rating

Write a Review
64 Boone Hills Dr, St Peters, MO 63376 (636) 422-5665 callagers.com

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

Indoor air quality
Filtration
Furnace installation
Furnace repair
Maintenance
Boiler installation
Emergency services
Radiant heating
Ac repair
Ductless
Ac installation
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 HVAC system is faulty or getting old, it likely needs servicing or replacement from an HVAC company. Look for these signs your system needs service:

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

These HVAC red flags indicate that you should have your system evaluated. A local company can complete an inspection, identify problems, and advise you whether you should repair or replace your HVAC unit.

Cost of HVAC Installation and Maintenance in St. Charles

What you pay for HVAC installation or maintenance varies based on your system style. Common HVAC unit styles include the following:

  • Split or mini-split: Homes without ductwork for centralized climate control often have split or mini-split HVAC systems. These systems consist of internal units in each room to regulate temperature, which all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions much like a standard split system, but is able to utilize either gas or electricity for power.
  • Heat pump: Heat pumps exchange hot and cool air between your home and the outdoors. They don't make their own heat or AC, so they function best in mild climates.
  • Packaged heating and air: Packaged HVAC systems are more popular in smaller houses. They consist of a single combined heating and cooling unit, usually located in a basement or attic. This unit tends to be efficient, compact, and easy to maintain.

HVAC maintenance prices differ based on the specific services required. HVAC systems can be complex and potentially require several different services. Price ranges for typical 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 fix or swap out your HVAC components when they become damaged, but it can also be expensive. Thankfully, there are some steps you can take to reduce wear and tear on your HVAC.

  • Change the position of your blinds seasonally. Opening your blinds in winter allows passive solar heat into your house. Closing your blinds in summer blocks some heat from getting indoors. Both of these measures help decrease the work required from your home’s HVAC system.
  • Change filters regularly. Replacing your air filters or washing them every 30–90 days allows smooth air circulation through your HVAC system. You should also try to keep debris from accumulating on the external parts of your HVAC.
  • Monitor for potential problems. Monitor your system for issues, for example by consistently checking your thermostat and energy bills. This enables you to address issues before they get too expensive.
  • Keep your system clean. Regularly cleaning grills, ductwork, indoor evaporator coil, and condenser fan blades helps your HVAC system run efficiently and reduces your risk of mold. The National Air Duct Cleaners Association recommends cleaning your system when it starts to look dirty.
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 what makes a trustworthy HVAC company is vital for an easy installation or repair. Hiring an experienced, credentialed HVAC contractor gives you confidence your system can provide reliable heating and air conditioning year-round.

Compare Multiple Bids

Request estimates from three or more HVAC providers. Explain your issues and ask if technicians can inspect your system in person. Review each contractor's diagnoses, recommended solutions, estimated cost, timeline, and warranties. Avoid companies that pressure you or demand payment before work.

Check Credentials

Choose an HVAC company with well-trained technicians who have appropriate licensing and experience. In all states, HVAC contractors have federal requirements from the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, individuals must pass an exam (the specific exam depends on the kind of equipment they intend 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 by the state.

Missouri doesn't have state-level licensing requirements for HVAC contractors; however, most municipalities have local requirements. It's important 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 check reviews and complaints on sites like Yelp, Google Reviews, and the Better Business Bureau (BBB). Pick a company with positive reviews and testimonials about fantastic customer experiences.

Understand Work Details

Always make sure you know the details of any project. For HVAC repairs, your provider should list which parts require replacement and why. Confirm that your technician will clean and test the system after repairs are done to verify that it’s working properly. When replacing your HVAC, have the contractor explain the new estimated installation time, model, brand, energy efficiency, and features. Before signing a contract, make sure you understand how your provider will determine the right system size for your home and what the price will be.

Compare Warranties

Trustworthy HVAC companies back their services with warranties. Compare warranties from different companies, keeping in mind that broader coverage is better. Look for the provider that offers the most coverage for a fair price.

Get Quote in Writing

Always get estimates for HVAC service in writing before work begins. A comprehensive quote should cover both labor and materials. Make sure you understand all terms before signing a contract.

Frequently Asked Questions About HVAC in St. Charles, MO

You should have your HVAC system inspected about twice a year. After the inspection, your technician will inform you what services are required. You should also schedule an inspection if you start noticing issues such as leaks, unusual smells, or strange noises. If your system has ductwork, it should be inspected every few years.

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

You can save energy throughout the year by making it easier for your HVAC system to maintain the temperature of your home. During all seasons, keep your thermostat as close to the outside temperature as possible, and avoid making drastic changes — adjust it only a few degrees at a time. You could also consider purchasing a smart thermostat.

Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing an air conditioning unit or a furnace takes anywhere from about half a day up to two days. The exact amount of time will depend on factors like how large your home is, how easily accessible different sections are, and whether your technician runs into any problems.

For a 2,000-square-foot home, you need around 2.5 to 5 tons of air conditioning capacity. For homes over 1,000 square feet, central air will usually 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).

Usually, HVAC financing is provided by a third-party lender. If your HVAC company doesn't have financing options, you might consider taking out a loan on your own. Be sure to talk to your HVAC company and a financial advisor to determine what options are available and appropriate for your situation.

Other St. Charles, MO Home Services