Expert Advice On Improving Your Home

10 Best HVAC Companies in O'Fallon, 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, Americans devote 55% of their energy usage to heating and cooling their home, according to the Department of Energy. Energy costs in O'Fallon are often higher than in other places, meaning that you're probably trying to save money on your bill.

Our list of the top HVAC companies in O'Fallon can help you get your system into top shape, allowing you to save money while staying comfortable.

Top 10 Best HVAC Companies in O'Fallon

Stay Cool Climate Control

Stay Cool Climate Control Logo

Our Rating

User Rating

Write a Review
407 Sonderen St, O'Fallon, MO 63366 (636) 747-1762 staycool-hvac.com

Reliable customer support

Free quote

Prompt service delivery

Informative resources

Clear pricing policy

Services Offered

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

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

Informative resources

Free quote

Reliable customer support

Clear pricing policy

Services Offered

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

Hoff Heating & AC

Hoff Heating & AC Logo

Our Rating

User Rating

Write a Review
1520 Kemmar Ct, O'Fallon, MO 63366 (636) 388-4141 hoffheating.com

Reliable customer support

Clear pricing policy

Informative resources

Services Offered

Ac installation
Furnace installation
Ac repair
Ventilation
Indoor air quality
Filtration
Geothermal heating
Ductless
Furnace repair
Maintenance

AAA Heating & Cooling

AAA Heating & Cooling Logo

Our Rating

User Rating

Write a Review
407 E Pearce Blvd Ste A, Wentzville, MO 63385 (636) 278-9616 aaastl.com

Prompt service delivery

Free quote

Clear pricing policy

Reliable customer support

Informative resources

Services Offered

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

Swiss Air Heating & Cooling, LLC

Swiss Air Heating & Cooling, LLC Logo

Our Rating

User Rating

Write a Review
406 E Wabash St, O'Fallon, MO 63366 (636) 978-7800 swissairstl.com

Informative resources

Reliable customer support

Clear pricing policy

Free quote

Services Offered

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

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

Ductless
Ac installation
Geothermal heating
Inspection
Maintenance
Ac repair
Indoor air quality
Emergency services

Faszold Heating and Cooling

Faszold Heating and Cooling Logo

Our Rating

User Rating

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

Informative resources

Reliable customer support

Clear pricing policy

Free quote

Services Offered

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

Apollo Heating & Cooling

Apollo Heating & Cooling Logo

Our Rating

User Rating

Write a Review
120 State Hwy A #3, Wentzville, MO 63385 (636) 639-9818 apolloheatandcool.com

Prompt service delivery

Clear pricing policy

Reliable customer support

Informative resources

Free quote

Services Offered

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

Fresh Air Heating & Cooling

Fresh Air Heating & Cooling Logo

Our Rating

User Rating

Write a Review
612 Spirit Valley E Dr, Chesterfield, MO 63005 (636) 224-6106 ineedfreshair.com

Reliable customer support

Prompt service delivery

Clear pricing policy

Informative resources

Services Offered

Filtration
Maintenance
Inspection
Indoor air quality
Ductless
Ac repair
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

Prompt service delivery

Reliable customer support

Free quote

Clear pricing policy

Services Offered

Furnace repair
Maintenance
Ductless
Indoor air quality
Ac installation
Emergency services
Ventilation
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 broken or getting old, it likely needs repairs or replacement from an HVAC company. Look for these indicators your system needs service:

  • Frequent breakdowns and need for repairs
  • Thermostat malfunctions or temperature control issues
  • Odd noises when turning on
  • Poor air circulation or uneven heating/cooling
  • Refrigerant leaks
  • Higher than normal energy bills
  • Cracking, rust, or corrosion
  • An HVAC system that's over 15 years old

If you see any of these HVAC issues, have a technician inspect your system. A local professional can detect problems and decide whether fixing or replacing your HVAC unit is the correct solution.

Cost of HVAC Installation and Maintenance in O'Fallon

The cost of HVAC installation or maintenance will differ depending on the type of unit you have. Common varieties of HVAC units include the following:

  • Split or mini-split: If your home's ductwork can't accommodate a central HVAC system, you likely have a split or mini-split system. Split systems have internal units in each room to control temperature. These indoor units all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC unit operates similarly to a regular split system. It provides flexibility by providing the option to draw on either electricity or gas for energy.
  • Heat pump: Heat pumps work by moving warm and cool air between your home and the outdoors. These systems don't produce heat or air conditioning themselves, and are better for more moderate climates.
  • Packaged heating and air: Packaged HVAC systems work well in smaller houses. They consist of a single combined air conditioner and heating unit, usually located in a basement or attic. This unit is typically space-saving, energy-efficient, and easy to maintain.

HVAC maintenance prices differ based on the specific services needed. HVAC systems can be complicated and potentially require several different services. Fees for typical jobs are as follows:

HVAC Unit Type Cost
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

Essential HVAC maintenance is important, but can be pricey. Thankfully, homeowners can take steps to reduce wear and tear on their system and lower future maintenance needs.

  • Keep your system clean. Regularly cleaning grills, indoor evaporator coil, ductwork, and condenser fan blades helps your HVAC system run efficiently and lowers the risk of mold. The National Air Duct Cleaners Association advises cleaning your heating and cooling system when it starts to look dirty.
  • Monitor for potential problems. Monitoring the efficiency of your HVAC system — for instance by checking your thermostat settings and energy bills — helps you find and solve issues before they get too expensive.
  • Change the position of your blinds seasonally. During winter, leaving your blinds open allows your home to benefit from passive solar heating. In the summer, keeping your blinds shut helps to block out heat. Doing both lowers the amount of work your HVAC system must perform.
  • Change filters regularly. Changing your air filters or washing them every 1–3 months allows efficient air circulation through your system. Also try to keep debris from accumulating on the outside components of your HVAC.

Service Cost
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 to look for in an HVAC company is important for a successful project. Look for an experienced, licensed contractor that can offer you peace of mind and ensure your system provides reliable heating and air conditioning for your home.

Compare Multiple Bids

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

Check Credentials

When hiring an HVAC company, choose one with technicians that have the right training, licenses, and experience. HVAC contractors in all states must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is required for any individual who helps "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." Contractors must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. 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 always a good idea to check with your local government to understand requirements for licenses such as HVAC Contractor or HVAC Journeyman Contractor. You can also verify that a company holds a valid business license. Always check a company's reviews and complaints with organizations such as the Better Business Bureau (BBB), Yelp, and Google Reviews. Choose a company with glowing reviews and stories of positive service experiences.

Understand Work Details

Make sure you understand the details of any project before it begins. When getting HVAC repairs, have your provider specify which parts need replacement and why. Get confirmation that your technician will clean and test the entire system after the repair to ensure that everything works. When getting a replacement, ask your contractor to explain the new HVAC system model, estimated installation time, features, energy efficiency, and brand. Before signing a contract, you should understand the process your provider will use to properly size the system for your home and the price you'll pay.

Compare Warranties

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

Get Quote in Writing

Always get estimates for HVAC service in writing before committing to a provider. A comprehensive quote should cover both materials and labor. Make sure you review all terms before signing a contract.

Frequently Asked Questions About HVAC in O'Fallon, MO

You should have your HVAC system inspected twice a year. After completing their inspection, your technician will tell you if any services are required. You should also schedule an inspection if you notice new issues such as leaks, strange noises, or unusual smells. If your system has ductwork, it should be inspected every few years.

Usually, 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 typically sees the most use.

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

It takes around one to three days to have an HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this may take anywhere from a few hours up to two days. This timeline will be affected by the size of your home, how easily accessible your system is, and any new issues your technician uncovers.

Your HVAC company may provide financing options through a third-party lender, or you may be able to obtain a loan on your own. It's smart 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 several ways you can make your HVAC system more energy-efficient:

  • Keep ductwork clean, and change or clean your air filters regularly.
  • Schedule regular inspections to take care of issues as they arise.
  • Keep your attic well-ventilated and make sure all doors and windows are well-sealed.
  • Install a smart thermostat. If you aren't able to purchase one, try to keep the temperature indoors as close to the outside temperature as you can.
  • When you need to replace part of your system, see if there are Energy Star-certified or other environmentally friendly options.

Other O'Fallon, MO Home Services