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10 Best HVAC Companies in O'Fallon, IL

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Written By Bradford Cuthrell

Last Updated April 2024

According to the Department of Energy, approximately 55% of energy use in American homes goes toward heating and cooling. With so much money invested in cooling and heating your O'Fallon home, you want to ensure that you're getting the best return on your investment.

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

Top 10 Best HVAC Companies in O'Fallon

Polar Aire Plumbing, Heating & Air Conditioning

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

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Reliable customer support

Prompt service delivery

Clear pricing policy

Free quote

Services Offered

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

Home Heating & Cooling

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1450 Frontage Rd, O'Fallon, IL 62269 (618) 416-0111 weheatyourhome.com

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Informative resources

Prompt service delivery

Clear pricing policy

Services Offered

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

Garrett Heating & Cooling

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645 Hill Rd, Caseyville, IL 62232 (618) 420-8800 garrettheatingandcooling.com

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Prompt service delivery

Reliable customer support

Free quote

Services Offered

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

Heritage Heating & Cooling

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97 Betty Ln, O'Fallon, IL 62269 (618) 769-3949 heritage-service.com

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Reliable customer support

Informative resources

Clear pricing policy

Services Offered

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

Tettaton Heating & Cooling

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22 Sycamore Dr, Caseyville, IL 62232 (618) 344-9211 tettatonhvac.com

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Clear pricing policy

Reliable customer support

Services Offered

Ductless
Furnace repair
Ac installation
Ac repair
Filtration
Maintenance
Furnace installation
Boiler repair
Boiler installation

C&K Heating & Cooling

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1116 Galaxy Dr, Lebanon, IL 62254 (618) 537-8888 ckheatcool.com

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Informative resources

Prompt service delivery

Clear pricing policy

Services Offered

Maintenance
Furnace installation
Boiler installation
Ac repair
Ac installation

Dunn Heating & Cooling, LLC

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110 W Main St a, Belleville, IL 62220 (618) 717-0707 dunnheatcool.com

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Clear pricing policy

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Prompt service delivery

Services Offered

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

Anytime Heating and Cooling

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405 N Illinois St, Belleville, IL 62220 (618) 520-4240 anytimehc.com

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Free quote

Reliable customer support

Services Offered

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

Sigman Heating and Air Conditioning, Inc.

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6200 Old St Louis Rd, Belleville, IL 62223 (618) 234-4343 sigmanhvacr.com

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Clear pricing policy

Services Offered

Furnace installation
Ac installation
Maintenance
Emergency services
Duct cleaning
Radiant heating
Indoor air quality

Crumer's Heating & Cooling

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8114 Collinsville Rd, Collinsville, IL 62234 (618) 410-5321 crumersheatingandcooling.com

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Clear pricing policy

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Services Offered

Maintenance
Furnace installation
Ac installation
Ac repair
Furnace repair
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

An HVAC system that's not working properly or outdated likely needs professional attention for repairs or replacement. Watch for these signals that your system needs service:

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

If you notice any of the above, have a local HVAC technician inspect your system. They can identify problems and let you know whether repair or full HVAC replacement is the best course of action.

Cost of HVAC Installation and Maintenance in O'Fallon

Your HVAC installation or maintenance cost changes depending on the type of unit. Common HVAC unit varieties include the following:

  • Split or mini-split: If your home doesn’t have the ductwork for central air or heating, you likely have a split or mini-split system instead. Split HVAC systems have interior units in each room to regulate temperature. These connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system performs similarly to a standard split system, but is able to utilize either electricity or gas as energy sources.
  • Heat pump: Heat pumps move hot and cold air between your home and the outside. These systems don't generate their own heat or AC, so they work more effectively in moderate climates.
  • Packaged heating and air: Packaged HVAC systems are more popular in smaller houses. These systems consist of a single combined heating and cooling unit that's normally located in an attic or basement. This unit tends to be compact, efficient, and easy to maintain.

HVAC maintenance prices vary based on the work needed. HVAC systems are complicated and may need a number of types of maintenance. Prices for common jobs are as follows:

HVAC Unit TypeCost
Split$1,929-$4,919
Hybrid Split$3,909-$7,203
Heat Pump$3,027-$30,845
Packaged Heating and Air$253-$422

Ways to Save Money on HVAC Costs

It’s important to make any essential HVAC fixes or replacements as needed, though they can be expensive. The good news is that homeowners have methods to decrease the effect of wear and tear and reduce the frequency of breakdowns.

  • Keep your system clean. Cleaning your ductwork, indoor evaporator coil, grills, and condenser fan blades regularly helps your HVAC system work efficiently and lowers the risk of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it starts to look dirty.
  • Change filters regularly. Air flows best through your HVAC system when you replace or clean the filters every 30–90 days. Also try not to let debris pile up on the outdoor parts of your HVAC.
  • Change the position of your blinds seasonally. Leaving your blinds open during the colder months helps warm your home with passive solar heating. Closing the blinds in warmer seasons helps prevent some heat from getting inside. Doing both helps lessen the demand on your HVAC.
  • Monitor for potential problems. Monitor your system for issues, for example by consistently checking your thermostat and energy bills. This allows you to address issues before they get out of hand.
ServiceCost
Filter Replacement$63-$169
Condensor Cleaning$1,267-$3,800
Thermostat Repair$84-$211
Ductwork Cleaning$405-$1,013

How To Choose a Local HVAC Company

Knowing what makes a trustworthy HVAC company is key for a smooth installation or repair. Hiring an experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.

Compare Multiple Bids

Get quotes from at least three HVAC providers. Explain your issues and ask if technicians can inspect your system in person. Review each provider's diagnoses, recommended solutions, estimated cost, timelines, and warranties. Avoid companies that pressure you or demand payment before work.

Check Credentials

It's important to choose an HVAC company that employs technicians with the proper qualifications and expertise. In all states, HVAC contractors 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 on a state-by-state basis.

There are no state-level licensing requirements for contractors in Illinois. However, there may be local regulations. Be sure to check with your municipal government to verify that your contractor meets all the requirements. You can verify an Illinois business license on the Secretary of State's website. Also check a company's reviews and complaints on sites such as Yelp, the Better Business Bureau (BBB), and Google Reviews. Pick a company with glowing feedback and stories of satisfied customers.

Understand Work Details

It’s important to know what the work process is going to look like. For HVAC repairs, the company should detail the specific parts that need replacement and why. Confirm that your technician will clean and test your system afterward to make sure everything is operating properly. For replacement, ask the contractor to explain the new HVAC system estimated installation time, brand, model, features, and energy efficiency. Before work begins, you should understand how your provider will size the system appropriately for your home and the price you'll pay.

Compare Warranties

Trustworthy HVAC companies back their services with warranties. Look at warranties from different companies, remembering that broader coverage is better. Look for the company that provides the most coverage for a fair price.

Get Quote in Writing

Get written quotes before starting any HVAC work. The quote should include costs for both materials and labor. Review all terms carefully before signing.

Frequently Asked Questions About HVAC in O'Fallon, IL

Normally, your HVAC system should be inspected twice a year. After that inspection, your technician will tell you what services are required. You should also have an inspection if you start to notice any issues, such as unusual smells, leaks, or strange noises. If you have ductwork in your home, it should be serviced every few years.

The best times to have an HVAC inspection are during the spring and fall. Technicians are less busy during these times, which makes it easier to get an appointment. This also ensures that your system is ready for the summer and winter, when it typically sees the most use.

You can save energy throughout the year by reducing the amount of power your HVAC system uses to maintain the temperature of your home. During all seasons, keep your thermostat as close to the outside temperature as possible, and try to adjust it only a few degrees at a time. You may also consider getting a smart thermostat.

It takes roughly 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 influenced by the size of your house, the accessibility of your system, and any new issues your technician discovers.

For a 2,000-square-foot home, you'll need between 2.5 and 5 tons of air conditioning capacity. If your home is larger than 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).

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

There are a number of 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 come up.
  • Make sure your doors and windows are well-sealed and keep your attic well-ventilated.
  • Install a smart thermostat. If you aren't able to purchase one, try keeping your inside temperature as close to the outside temperature as is comfortable.
  • When replacing part of your HVAC system, explore Energy Star-certified or similar environmentally friendly options.

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