New A/C System Financing 0% For Up To 24 Months*
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Offering 24 Hour Heating & Air Conditioning Repair Service in Cook & Lake County, IL

100% Satisfaction Guaranteed

Ever since we opened our doors in 1981, the knowledgeable staff at Assurance Heating & Air Conditioning has dedicated itself to providing the whole spectrum of indoor comfort services to the homes and businesses of Cook & Lake County, Illinois. Our technicians are highly competent in their field, each performing their individual specialties with deftness and precision. That’s why you can be sure you’ll receive top-quality service when you call the HVAC provider whose name says it all.

Because assurance is something we know you not only appreciate but also expect from your heating and air conditioning contractor, we’re happy to inspire the confidence you need to enjoy ongoing peace of mind. No matter what kind of HVAC or other residential or commercial service you need – from heating system installation or maintenance to furnace or air conditioning repair – you can depend on Assurance Heating & Air Conditioning for quality work every time.

Why You Can Trust Us With Your HVAC Needs

What to expect from us…

At Assurance, we believe in providing the quality products and competent, professional service that inspire our customers to return to us every time they face an HVAC need. Because we always strive to provide the most competent and responsive service, we’re proud to say that we have a growing list of satisfied customers. Were you to speak with any of these customers, you would learn the many valid reasons you have for choosing us as your Buffalo Grove, Illinois, HVAC contractor. Here’s a list of the reasons our customers give:

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100% Guarantee

With fast, friendly service

Speedy Response Time

With technical excellence

Free Service Quotes

With budget-stretching online specials

24/7 Emergency Service

24/7 emergency air conditioning and heating repairs

Great Local Reputation

Over 35 years of excellence in Cook & Lake County, Illinois

Quality HVAC Solutions

We offer a complete lineup of indoor comfort services

What our customers are saying

Our Lineup of HVAC Services

When you work with the knowledgeable heating and cooling specialists at Assurance, a single HVAC contractor is all you’ll need to handle your most challenging jobs. Because we offer a complete lineup of indoor comfort services, we’re able to handle your project from beginning to end, addressing all your HVAC wants and needs.

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We’re proud to offer the following comprehensive lineup of HVAC services to the homes and businesses in Cook and Lake Counties:

  • Air conditioning, heating and furnace repair
  • 24/7 emergency air conditioning and heating repairs
  • HVAC consultation services
  • HVAC system sizing and Manual-J load calculations
  • System layout and design services
  • New-construction and replacement HVAC installations
  • Air conditioner, heat pump and furnace maintenance
  • Heating, ventilation and air conditioning maintenance agreements
  • Indoor air quality products and services
  • Water heater installation, maintenance and repair
  • Home insulation services for attics and other areas
  • Snow-melt system installation, maintenance and repair
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Read Latest News In our Blog

Are Strange Smells Coming From Your Air Conditioner?

Air conditioners are designed for odorless operation. The problems that cause strange smells are best addressed with regular AC maintenance. If you smell something foul coming through the vents, schedule air conditioner repairs at once. Here are some issues that can...

Signs Your AC May Need to be Replaced

The middle of a sweltering Winnetka, IL summer is a bad time to find out your air conditioner is irreparably broken. Fortunately, most AC failures don't occur entirely without warning. In fact, a few key signs can alert you to an air conditioner that's on its way out....

Looking for a Quality AC Repair Company?

Looking for a Quality AC Repair Company? Where do you turn when your air conditioner crashes at midnight and the heat and humidity are at their worst? Assurance Heating & Air Conditioning has been restoring indoor comfort to Lincolnshire, IL homes quickly and...

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Browse Our Website for More Information About Our Services

If you’re seeking a reliable HVAC contractor in Cook or Lake County, why not browse our website pages and get in touch? Our team is always standing by to answer your HVAC questions and help you determine which of our services would benefit you the most.