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10 Best HVAC Companies in Warren, IL

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Written By Bradford Cuthrell

Last Updated April 2024

If you're like the average American, more than half of your energy bill (55%, per the U.S. Department of Energy) goes toward heating and cooling your home. In Warren, you're probably looking to reduce your energy usage and save money.

Our list of Warren's top HVAC companies can help you get your system into its best shape ever, allowing you to save money while staying comfortable.

Top 10 Best HVAC Companies in Warren

Libertyville Unique Indoor Comfort - Now AA Service Co

Libertyville Unique Indoor Comfort - Now AA Service Co Logo

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624 Second St, Libertyville, IL 60048 (847) 362-1910 aaserviceco.com

Informative resources

Free quote

Reliable customer support

Clear pricing policy

Services Offered

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

Precision Today Plumbing Heating Cooling Electrical (Miller's Area Heating)

Precision Today Plumbing Heating Cooling Electrical (Miller's Area Heating) Logo

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112 Center St, Grayslake, IL 60030 (847) 752-4746 precisiontoday.com

Prompt service delivery

Free quote

Reliable customer support

Clear pricing policy

Informative resources

Services Offered

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

GSHA Services, LTD

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11 N Skokie Hwy #111c, Lake Bluff, IL 60044 (224) 507-6107 gshaservices.com

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Clear pricing policy

Free quote

Prompt service delivery

Informative resources

Services Offered

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

Blue Star Heating and Cooling

Blue Star Heating and Cooling Logo

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1840 Industrial Dr Ste 280, Libertyville, IL 60048 (847) 797-4232 bluestarillinois.com

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Informative resources

Free quote

Clear pricing policy

Services Offered

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

Herchenbach Mechanical Inc.

Herchenbach Mechanical Inc. Logo

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830 Magnolia Ave, Gurnee, IL 60031 (847) 260-9335 herchenbach.com

Prompt service delivery

Clear pricing policy

Free quote

Reliable customer support

Informative resources

Services Offered

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

North Shore Heating & Cooling

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1047 E High St, Mundelein, IL 60060 (847) 729-1040 northshoreheatingandcooling.com

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Prompt service delivery

Clear pricing policy

Free quote

Reliable customer support

Services Offered

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

Thornton Heating Service, Inc.

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19083 W Casey Rd, Libertyville, IL 60048 (847) 905-1608 thorntonheating.com

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Informative resources

Reliable customer support

Services Offered

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

Air Kings Heating And Cooling

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18880 Oak Ave, Mundelein, IL 60060 (847) 621-2263 callairkings.com

Reliable customer support

Free quote

Prompt service delivery

Services Offered

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

Modern Heating & Plumbing Co.

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1949 Swanson Ct, Gurnee, IL 60031 (847) 565-1334 modernheatingco.com

Prompt service delivery

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

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

Allied Air Conditioning & Heating Corp.

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203 Peterson Rd, Libertyville, IL 60048 (847) 367-8989 alliedairheat.com

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Clear pricing policy

Informative resources

Reliable customer support

Services Offered

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

A faulty or aging HVAC system probably needs professional attention from a technician who can make fixes or install a new unit. Look out for these common signs that your HVAC needs service:

  • Higher than normal energy bills
  • Thermostat malfunctions or temperature control issues
  • Strange noises when turning on
  • Frequent breakdowns and need for repairs
  • Refrigerant leaks
  • Cracking, rust, or corrosion
  • Uneven heating/cooling or poor air circulation
  • 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 decide whether repairing or getting a new HVAC unit is the correct solution.

Cost of HVAC Installation and Maintenance in Warren

The price of HVAC installation or maintenance changes depending on the type of unit you have. Common kinds 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 indoor units in each room to regulate temperature. These indoor units all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions comparably to a regular split system. It provides flexibility by having the option to use either electricity or gas for energy.
  • Heat pump: Heat pumps move warm and cool air between your home and outside. They don't generate their own heating and cooling, so they work best in more moderate climates.
  • Packaged heating and air: Packaged HVAC systems are a smart choice for smaller homes. They have a single cooling and heating unit, usually in a basement or attic. This unit is often small, cost-effective, and easy to maintain.

HVAC maintenance costs differ depending on what services are needed. HVAC systems are complex and can require different maintenance services. Prices for some common services are as follows:

HVAC Unit TypeCost
Split$1,973-$5,030
Hybrid Split$3,998-$7,366
Heat Pump$3,096-$31,544
Packaged Heating and Air$259-$432

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 ways to reduce gradual wear and tear and reduce the frequency of breakdowns.

  • 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 the heat from getting inside. Doing both helps lessen the demand on your HVAC.
  • Change filters regularly. Changing your air filters or washing them every 30–90 days allows efficient air circulation through your system. Also try to keep debris from accumulating on the outside components of your HVAC.
  • Monitor for potential problems. Monitor your system for issues, for example by routinely checking your thermostat and energy bills. This enables you to address problems before they get out of hand.
  • Keep your system clean. Cleaning your grills, ductwork, condenser fan blades, and indoor evaporator coil regularly helps keep your HVAC system working efficiently and reduces the risk of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it begins to look dirty.
ServiceCost
Filter Replacement$65-$173
Condensor Cleaning$1,295-$3,886
Thermostat Repair$86-$216
Ductwork Cleaning$414-$1,036

How To Choose a Local HVAC Company

It's important to know what makes a good HVAC company. A properly licensed contractor with the right experience will give you confidence that they can fix your system, providing you with effective air conditioning and heating for your home.

Compare Multiple Bids

Contact at least three HVAC contractors for quotes. Explain your issues and schedule an in-person inspection if possible. Compare providers' diagnoses, suggested repairs, estimated costs, timeframes, and warranties. Avoid providers that pressure you or demand upfront payment.

Check Credentials

When selecting an HVAC provider, choose one with technicians that have the proper 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." An individual 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 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 the requirements. You can verify an Illinois business license on the Secretary of State's website. You should also check reviews and complaints on sites like Yelp, Google Reviews, and the Better Business Bureau (BBB). Choose a company with positive reviews and testimonials about good customer experiences.

Understand Work Details

It’s important to understand what the work process is going to look like. For HVAC repairs, the company should detail the particular parts that need replacement and why. Confirm that your technician will clean and test your system afterward to guarantee everything is working correctly. For replacement, ask your contractor to explain the new HVAC system brand, features, model, estimated installation time, and energy efficiency. Before starting the project, 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

Reliable HVAC companies provide warranties for their work. Broader coverage is better, so make sure to compare warranties between companies. Choose the one that provides the most comprehensive coverage at a reasonable cost.

Get Quote in Writing

Always get HVAC estimates in writing before work begins. A thorough quote will cover costs for both materials and labor. Confirm that you agree to all terms before signing the contract.

Frequently Asked Questions About HVAC in Warren, IL

Generally, you should have your HVAC system inspected twice a year. After an inspection, your HVAC technician will tell you what services are required. You should also call a technician if you start to notice any 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 to have your HVAC system inspected are during the spring and fall. Technicians tend to be 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, which is when it normally gets the most use.

You can save energy throughout the year by reducing the amount of power your HVAC system uses 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 once. You might also consider purchasing a smart thermostat.

It takes around one to three days to have your HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this can take between half a day and two days. This timeline will be affected by the size of your house, how easily accessible your system is, and any new issues your technician discovers.

For a 2,000-square-foot home, look for a furnace that's between 50,000 and 80,000 BTUs (British thermal units).

For a 2,000-square-foot home, you'll also want to look for an air conditioning unit with around 2.5 to 5 tons of capacity. Usually, if your home is larger than 1,000 square feet, central air will be more effective than window air conditioning units.

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

There are several ways you can make your HVAC system more energy-efficient:

  • Keep ductwork clean, and clean or change your air filters on a regular basis.
  • Schedule regular inspections to take care of issues as they come up.
  • 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 your inside temperature as close to the outside temperature as is comfortable.
  • When replacing part of your system, explore Energy Star-certified or other environmentally friendly options.

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