Palatine, IL:
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Libertyville, IL:
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Having a broken HVAC system is not only uncomfortable, but it’s also dangerous. Living in Grayslake, IL, means dealing with cold winters and hot summers. Therefore, you need a heating and air system that supplies reliable climate control to stay safe indoors. If you suspect your HVAC system broke, we’re here to fix it.

Reasons You Need Professional HVAC in Grayslake, IL

Sitting at home with a broken HVAC system means dealing with uncomfortable temperatures, stuffy rooms, and high energy bills. However, you may not know there are issues, to begin with. Some common signs of a broken HVAC system include

  • Broken pilot lights
  • Loud grinding, banging, or squealing noises
  • Higher energy bills
  • Furnace and air condition not emitting warm or cold air, respectively
  • Poor indoor air quality

These are some common issues with furnaces and air conditioners for many homeowners. Fortunately, whenever you need reliable HVAC in Grayslake, IL, Allied Air Conditioning and Heating is here to help with the best tools, experience, and safety protocols in place.

Our Services

Our HVAC contractors know how to fix your heating and air fast so that you have an energy-efficient system all year. We offer a wide range of services, like

No matter how big or small your issues are, we guarantee 100% satisfaction for all our customers. Our services involve a thorough multi-point inspection to spot and fix problems. We always carry factory-authorized replacement parts to finish the job fast and efficiently.

Allied is the HVAC Company You Can Trust

We have been the go-to HVAC company providing heating and cooling in Grayslake, IL, for over 50 years! Our NATE-certified HVAC technicians serve customers with quality, reliable HVAC services that fit their needs and budget. Even if you need financing assistance, we can help!

We’re available night and day across the northern suburbs for top-notch HVAC repairs, installations, and maintenance as soon as you need it.

Schedule an Appointment Today!

Give us a call at 847-367-8989 to schedule an appointment! You can also submit our online questionnaire for a free quote! Customer service means everything to us, so our team is always happy to answer any questions or concerns you may have about your HVAC system. As we said, we’re available 24 hours a day, seven days a week, for same-day service.

We are here for you anytime, anywhere. From repairs to annual maintenance, we ensure optimal heating and cooling for your home all year.

Young woman sitting in a room enjoying fresh air from an air conditioner on the wall

Interested in a boiler for your home or commercial space? Allied Air Conditioning & Heating Corporation partners with IBC and Carrier brands to not only ensure the right fit for any demand but outstanding reliability and lasting performance.


Through our relationship with Wells Fargo Bank, N.A., participating HVAC dealers offer a variety of flexible options for financing your new HVAC product or system. That way, you can invest in your home’s comfort without breaking your monthly budget.

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