10 Best HVAC Companies in Cortland, IL

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Last Updated: February 25, 2025

On average, American homeowners devote 55% of their energy usage to heating and cooling their home, according to the Department of Energy. With so much money invested in heating and cooling your Cortland home, you want to ensure that you're getting the best return on your investment.

Our guide to the top HVAC companies in Cortland can help you save money by getting your HVAC system repaired, installed or replaced by the right person for the right price.

Top 10 Best HVAC Companies in Cortland

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One Hour Heating & Air Conditioning® of Elk Grove

One Hour Heating & Air Conditioning® of Elk Grove Logo

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User Rating

3540 Swenson Ave, St. Charles, IL 60174 (847) 744-9447 onehourheatandair.com

Free quotes

Clear pricing policy

Reliable customer support

Prompt service delivery

Informative resources

Services Offered

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

JNL Climate Control, Inc.

JNL Climate Control, Inc. Logo

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User Rating

215 Prairie Lake Rd, East Dundee, IL 60118 (847) 358-2251 jnlclimatecontrol.com

Informative resources

Reliable customer support

Free quotes

Clear pricing policy

Prompt service delivery

Services Offered

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

Comfort Services Heating & Air Conditioning, Inc.

Comfort Services Heating & Air Conditioning, Inc. Logo

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User Rating

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

Informative resources

Prompt service delivery

Reliable customer support

Free quotes

Services Offered

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

American Family Heating & Air Conditioning

American Family Heating & Air Conditioning Logo

Our Rating

User Rating

4079 Conifer Dr, Elgin, IL 60124 (847) 583-8731 americanfamilyhvac.com

Informative resources

Reliable customer support

Clear pricing policy

Free quotes

Services Offered

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

Air Blue Heating and Cooling

Air Blue Heating and Cooling Logo

Our Rating

User Rating

1154 N Main St Unit D, Algonquin, IL 60102 (847) 250-1703 airblueinc.com

Informative resources

Reliable customer support

Free quotes

Clear pricing policy

Prompt service delivery

Services Offered

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

One Hour Heating & Air Conditioning® of Naperville

One Hour Heating & Air Conditioning® of Naperville Logo

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User Rating

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

Free quotes

Reliable customer support

Prompt service delivery

Clear pricing policy

Informative resources

Services Offered

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

Midwest Comfort Heating & Cooling LLC

Midwest Comfort Heating & Cooling LLC Logo

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User Rating

1022 W Devon Ave, Elk Grove Village, IL 60007 (847) 338-2777 midwestcomfort.net

Free quotes

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

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

G & R Heating and Air

G & R Heating and Air Logo

Our Rating

User Rating

24 Center Dr Unit #9, Gilberts, IL 60136 (224) 419-5324 grheatingcooling.com

Informative resources

Free quotes

Reliable customer support

Clear pricing policy

Services Offered

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

Brian and Sons Heating and Air Conditioning

Brian and Sons Heating and Air Conditioning Logo

Our Rating

User Rating

113 Main St Suite 202, Oswego, IL 60543 (630) 906-7302 brianandsons.com

Prompt service delivery

Informative resources

Free quotes

Clear pricing policy

Reliable customer support

Services Offered

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

Tempco Heating & Air Conditioning

Tempco Heating & Air Conditioning Logo

Our Rating

User Rating

2511 Technology Dr #101, Elgin, IL 60124 (847) 670-7000 tempcoheatingandac.com

Free quotes

Reliable customer support

Informative resources

Services Offered

Furnace repair
Ventilation
Maintenance
Ac repair
Indoor air quality
Emergency services
Filtration
Zoning systems
Radiant heating
Ac installation
Furnace installation
Ductless
Boiler 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 home's HVAC system isn't working correctly or nearing the end of its lifespan, you may need to hire an HVAC contractor for repairs or replacement. Look for these common indicators that your system needs professional attention:

  • Odd noises when the system turns on
  • Refrigerant leaks
  • Poor air circulation or uneven heating/cooling
  • Temperature control issues or thermostat malfunctions
  • Unusually high energy bills
  • Frequent breakdowns and need for repairs
  • Corrosion, cracking, or rust
  • 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 identify problems and determine whether repairing or getting a new HVAC unit is the best solution.

Cost of HVAC Installation and Maintenance in Cortland

HVAC installation or maintenance prices change depending on your system. Common HVAC unit types include the following:

  • Split or mini-split: If your home's ductwork isn’t suited for 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 in the same way as a normal split system, but has the advantage of being able to draw power from either electric or gas sources.
  • 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 better for more moderate climates.
  • Packaged heating and air: Packaged HVAC systems are a smart choice for smaller houses. They have a single heating and cooling unit, usually in a basement or attic. This unit is often small, cost-effective, and easy to maintain.

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

HVAC Unit TypeCost
Split$1,850-$4,715
Hybrid Split$3,748-$6,905
Heat Pump$2,902-$29,570
Packaged Heating and Air$243-$405

Ways to Save Money on HVAC Costs

It's important to take care of HVAC repairs and replacements in a timely manner, but it can also be expensive. Luckily, there are steps you can take to slow the wear and tear on your HVAC.

  • Keep your system clean. Keeping your condenser fan blades, ductwork, grills, and indoor evaporator coil clean helps your system run and reduces the chance of mold growth. The National Air Duct Cleaners Association recommends that you clean your HVAC system when it starts to look dirty.
  • 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 is required to do.
  • Monitor for potential problems. Monitoring your system for issues — for example, by checking your thermostat and energy bills routinely — helps you catch issues before they get too expensive.
  • Change filters regularly. Air flows through your HVAC system most effectively when you replace or clean the filters every 30–90 days. Also try not to let debris pile up on the outside areas of your HVAC.
ServiceCost
Filter Replacement$61-$162
Condensor Cleaning$1,214-$3,643
Thermostat Repair$81-$202
Ductwork Cleaning$389-$971

How To Choose a Local HVAC Company

Knowing the indicators of a good HVAC company is important. Working with a contractor that's properly licensed and highly experienced will give you confidence that they can fix your system, providing you with effective air conditioning and heating for your home.

Compare Multiple Bids

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

Check Credentials

Choose an HVAC company with well-trained technicians who have proper 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 what 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.

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. Reviewing feedback on the Better Business Bureau (BBB), Yelp, Google Reviews, and similar sites can help your decision as well. Choose a company with great reviews and reports of positive customer experiences.

Understand Work Details

Make sure you know the details of your project before starting. For HVAC repairs, have your provider specify which parts need replacement and why. Confirm that your technician will clean and test your system after the repair to verify that everything works. When replacing your HVAC system, request that the installation company describe the new brand, model, features, estimated installation time, and energy efficiency. Before signing a contract, 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

Trustworthy HVAC companies back their services with warranties. Look at warranties from different companies, keeping in mind that more comprehensive coverage is better. Look for the company that provides the most coverage for a fair price.

Get Quote in Writing

Always get HVAC quotes in writing before work begins. A thorough quote will cover costs for both materials and labor. Ensure that you understand all terms before signing the contract.

Frequently Asked Questions About HVAC in Cortland, IL

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

The best times of the year to have an HVAC inspection are during the spring and fall. Technicians are often less busy during these times, so it will be easier to get an appointment. This also helps get your system ready for the summer and winter, the times of the year when it sees the most use.

You can save energy throughout the year by making it easier for your HVAC system to maintain your home's temperature. 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 between one and three days to have your HVAC system installed or replaced. If you need just an air conditioning unit or a furnace, this might take between half a day and two days. This timeline will be determined by the size of your house, the accessibility of your system, and any new issues your technician runs into.

For a 2,000-square-foot home, you need around 2.5 to 5 tons of air conditioning capacity. If your home is larger than 1,000 square feet, central air will usually be more effective than window units for cooling.

For a 2,000-square-foot home, you'll 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 offer these options, you may 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 several ways you can make your HVAC system more energy-efficient:

  • Make sure your air ducts remain clean, and clean or change your air filters on a regular basis.
  • Schedule regular inspections to take care of problems 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 replacing part of your system, see if there are Energy Star-certified or similar environmentally friendly options.

Other Cortland, IL Home Services

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