10 Best HVAC Companies in Frankfort, IL

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Last Updated: February 25, 2025

On average, 55% of energy use in American homes goes toward heating and cooling, according to the U.S. Department of Energy. With Frankfort's higher cost of living, you're probably eager to save money on your energy bills.

Use our guide to the top HVAC companies in Frankfort 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 Frankfort

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Comfort Zone Service

Comfort Zone Service Logo

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9910 190th St Suite K, Mokena, IL 60448 (708) 390-7349 comfortzoneservice.com

Informative resources

Clear pricing policy

Reliable customer support

Prompt service delivery

Free quotes

Services Offered

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

Comfort Services Heating & Air Conditioning, Inc.

Comfort Services Heating & Air Conditioning, Inc. Logo

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12461 S Industrial Dr E, Plainfield, IL 60585 (815) 888-3240 comfortserv.com

Prompt service delivery

Free quotes

Reliable customer support

Informative resources

Services Offered

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

Struven Heating and cooling

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1843 W 99th Ave, Crown Point, IN 46307 (219) 300-5141 struvenheating.com

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

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

Update Heating and Cooling Services

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16525 W 159th St, Lockport, IL 60441 (815) 242-3339 updateheating.com

Clear pricing policy

Informative resources

Free quotes

Reliable customer support

Services Offered

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

Rousculp's Heating and Cooling

Rousculp's Heating and Cooling Logo

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2551 Theodore St Suite B, Crest Hill, IL 60403 (815) 436-4937 rousculps.com

Clear pricing policy

Informative resources

Free quotes

Services Offered

Ac installation
Duct cleaning
Furnace installation
Emergency services
Boiler installation
Smart home integration
Filtration
Indoor air quality
Ac repair
Boiler repair
Furnace repair
Ductless
Ventilation
Maintenance

All Temp Heating and Air Conditioning

All Temp Heating and Air Conditioning Logo

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370 S Bolingbrook Dr, Bolingbrook, IL 60440 (866) 693-2009 alltemp.com

Clear pricing policy

Prompt service delivery

Free quotes

Informative resources

Reliable customer support

Services Offered

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

One Hour Heating & Air Conditioning® of Naperville

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554 W 5th Ave, Naperville, IL 60563 (630) 503-7545 onehourheatandair.com

Clear pricing policy

Reliable customer support

Free quotes

Informative resources

Prompt service delivery

Services Offered

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

King Heating, Cooling & Plumbing

King Heating, Cooling & Plumbing Logo

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101 Ontario St, Frankfort, IL 60423 (815) 781-2710 kingheating.com

Informative resources

Free quotes

Clear pricing policy

Reliable customer support

Services Offered

Ac installation
Boiler installation
Filtration
Furnace repair
Maintenance
Ac repair
Emergency services
Inspection
Boiler repair
Duct cleaning
Furnace installation

Precision Today Plumbing Heating Cooling Electrical (Dykstra Home Services)

Precision Today Plumbing Heating Cooling Electrical (Dykstra Home Services) Logo

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13450 S Cicero Ave, Crestwood, IL 60418 (708) 954-0629 precisiontoday.com

Informative resources

Prompt service delivery

Free quotes

Reliable customer support

Clear pricing policy

Services Offered

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

Polar Heating & AC

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13801 SW Hwy, Orland Park, IL 60462 (708) 260-8855 polarheatingandair.com

Free quotes

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Furnace repair
Indoor air quality
Emergency services
Ductless
Duct cleaning
Ac repair
Furnace installation
Maintenance
Boiler repair
Boiler installation
Ac installation
Radiant heating
Inspection
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 near the end of its lifespan, it likely needs servicing or replacement from an HVAC company. Look for these signs your system needs service:

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

If you're experiencing 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 correct solution.

Cost of HVAC Installation and Maintenance in Frankfort

HVAC installation or maintenance costs change depending on your system. 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 indoor units in each room to control temperature. These 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 transferring warm and cool air between your home and the outdoors. These systems don't produce heat or air conditioning themselves, and are more suited to 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, typically in an attic or basement. This unit is often space-saving, energy-efficient, and easy to maintain.

The amount you spend on HVAC maintenance also varies depending on what kind of work you're having done. HVAC systems are complicated and might require different kinds of maintenance. The prices of some common jobs are as follows:

HVAC Unit TypeCost
Split$1,933-$4,928
Hybrid Split$3,917-$7,216
Heat Pump$3,033-$30,903
Packaged Heating and Air$254-$423

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. Luckily, there are some steps you can take to slow the wear and tear on your system.

  • Change filters regularly. Replacing your air filters or washing them every 1–3 months allows efficient air circulation through your HVAC system. You should also try to keep debris from accumulating on the outdoor sections of your HVAC.
  • Monitor for potential problems. Monitoring the efficiency of your HVAC system — for instance by checking your thermostat settings and energy bills — helps you identify and fix problems before they get out of hand.
  • 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 decreases the amount of work your HVAC system is required to do.
  • Keep your system clean. Keeping your indoor evaporator coil, condenser fan blades, grills, and ductwork clean helps your system function optimally and reduces the chance of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it starts to look dirty.
ServiceCost
Filter Replacement$63-$169
Condensor Cleaning$1,269-$3,807
Thermostat Repair$85-$211
Ductwork Cleaning$406-$1,015

How To Choose a Local HVAC Company

Finding the right HVAC company is crucial for a successful installation or repair. An experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.

Compare Multiple Bids

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

Check Credentials

When looking for an HVAC company, choose one with technicians that have the appropriate training, licenses, and experience. HVAC contractors in all states need to 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 what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.

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 confirm that your contractor meets all of the requirements. You can verify an Illinois business license on the Secretary of State's website. You should also look at reviews and complaints on sites like the Better Business Bureau (BBB), Google Reviews, and Yelp. Pick a company with positive reviews and testimonials about fantastic customer experiences.

Understand Work Details

Make sure you understand the details of your project before starting. When getting HVAC repairs, have your provider specify which parts require replacement and why. Confirm that your technician will clean and test the system after the repair to verify that everything works. When replacing your HVAC, request that the company explain the new features, brand, energy efficiency, estimated installation time, and model. Before signing paperwork, be sure you understand the process your provider will use to size the new HVAC system appropriately for your home and what the price will be.

Compare Warranties

Good HVAC companies offer warranties on service and equipment installations. The more complete the coverage, the better. Review warranty details between companies and pick the one that provides the best protection for a fair price.

Get Quote in Writing

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

Frequently Asked Questions About HVAC in Frankfort, IL

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

The best times of the year to have your HVAC system inspected are the spring and fall. Technicians are generally 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 gets the most use.

You can save energy throughout the year by reducing the amount of work it takes for your HVAC system to maintain your home's temperature. During all seasons, keep your thermostat as close to the outside temperature as you can, and avoid making drastic changes — adjust it only a few degrees at a time. You might 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 may take anywhere from a few hours up to two days. The exact amount of time will depend on factors like the size of your house, how easily accessible different sections are, and whether your technician runs into any problems.

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 generally 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).

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

  • Keep your air ducts clean and clean or change your air filters regularly.
  • Have regular inspections to take care of problems as they arise.
  • 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 you can.
  • When replacing part of your HVAC system, explore Energy Star-certified or similar environmentally friendly options.

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