Palatine, IL:
Call or Text Today 847-262-3349
24 Hour Emergency Service
Libertyville, IL:
Call Today 847-367-8989

Living near the lake means summers are breezy and cool. However, Illinois temperatures can fluctuate often, and living with lake-effect wind chills can turn cooler days into freezing ones. If you need expert HVAC services in Lake Forest, we can help. Allied Air Conditioning & Heating keeps you safe and comfortable at home all year.

Our Services

Allied Air Conditioning & Heating offers exceptional HVAC services in Lake Forest at unbeatable rates. Our NATE-certified technicians have the tools, training, and techniques to finish the job fast and efficiently. We offer various heating and cooling solutions for your HVAC system, such as heating, air conditioning, water heaters, and more.

Here are just some of the services we offer

  • Air Conditioning Repair and Maintenance
  • Air Conditioner Replacement and Installation
  • Heating Repair and Maintenance
  • Heating system Replacement and Installation
  • Furnace Repair and Maintenance
  • Duct Repair and Maintenance
  • Heat Pump Repair
  • Heat Pump Installation and Replacement
  • Boiler Services
  • Water Heater Services
  • Radiant Floor Heating
  • Indoor Air Quality Solutions
  • Ductless HVAC Repair
  • And more!

No matter what type of HVAC units you have, we have the skills to handle it all! Our HVAC contractors ensure timely results at rates you can afford.

HVAC technician using a gauge to check refrigerant levels in an air conditioner.

Why Us?

We prioritize top-notch customer service for each project from start to finish. Whether you need annual maintenance inspections or a complete in-house replacement to prepare for changing seasons, we do it all. We want everyone to feel safe and secure at home with a working HVAC system all year.

With Allied Air Conditioning & Heating, you can expect

  • Upfront, fair pricing on all services
  • Skilled, professional HVAC technicians using appropriate language and behavior
  • Reliability and friendliness
  • Modern cost-efficient and energy-efficient units
  • 100% satisfaction guaranteed

We have over 50 years of industry experience across Lake Forest and surrounding areas. Don’t just take our word for it. Our customers highly recommend us! Check out our countless 5-star reviews to see for yourself!

Contact Us for Expert HVAC in Lake Forest!

Call us at 847-367-8989 or complete our online submission form for a free quote on your system replacement! We’re always available to answer your questions or concerns. Call us for information on financing options.

No matter what, we provide reliable heating and cooling services in Lake Forest, IL, whenever you need them.


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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