700+ 5-Star Reviews

Professional Ac Replacement For Better Cooling

Your Special Offer + Our Promise

  • Trust-Building Checkmark Statements

  • Includes Comprehensive System Check

  • Helps Prevent Emergency Repairs

  • Extends Equipment Lifespan

  • Improves Cooling Efficiency

  • Lower Monthly Utility Bills

  • Performed by Certified Technicians

  • Boosts Home Comfort

  • One Month Free Level-Up Club

Better Airflow, Lower Energy Bills

New air conditioners offer improved airflow, quieter operation, and smarter temperature control. A properly installed replacement system cools your space faster while reducing energy use—giving you long-term savings and greater indoor comfort.

Our Services:

  • AC Coil Cleaning

  • AC Filter Replacement

  • AC Installation

  • AC Maintenance

  • AC Repair

  • Ductless Mini-Split

  • Furnace Installation

  • Furnace Maintenance

  • Furnace Repair

  • Heat Pumps

  • HVAC Zoning

Hear From A Recent Customer

I had my air conditioner go out. Kristian came out and assessed the system for me. He was great. He pointed out what the problems were and gave me options. He was very personable and knowledgeable about my system. He took the time to explain everything in detail and I didn’t feel pressured in any of Kristian’s solutions to get my system up and running or even replacing if necessary. I would highly recommend Leith Heating and Cooling for servicing your HVAC system and I would ask for Kristian. He was great to work with.

Eric Reinhardt

Satisfied Customer

Precision Repairs For Peak HVAC Performance

We don’t guess—we troubleshoot. Our team uses advanced diagnostic tools to identify the problem and perform lasting repairs that get your system back up and running quickly. No band-aids, just real solutions.

From Removal To Install—we Handle Everything

Our replacement process is smooth from start to finish. We remove your old unit, verify compatibility, and install the new system with expert precision—ensuring everything runs efficiently and is built to last through the hottest months.

AC Replacement Faqs

When should I replace my AC instead of repairing it?

If your unit is over 10–15 years old or repairs are becoming frequent and costly, replacement is often more economical.

How do I choose the right AC system?

Our team will assess your space, usage habits, and budget to recommend the best unit for comfort and efficiency.

What’s the difference between replacement and installation?

Replacement involves removing your old system and installing a new one. Installation is for brand-new setups without prior systems.

Will I notice a difference right away?

Yes. A new system typically cools more effectively, runs quieter, and lowers energy bills almost immediately.

Do you remove the old system?

Yes. We handle full removal and disposal of your old unit as part of the replacement service.

Is financing available for AC replacement?

Many providers offer financing. Ask about available options during your consultation.

Areas We Serve

  • Addison

  • Algonquin

  • Arlington Heights

  • Barrington

  • Barrington Hills

  • Bartlett

  • Batavia

  • Bloomingdale

  • Buffalo Grove

  • Burlington

  • Carol Stream

  • Carpentersville

  • Crystal Lake

  • Deer Park

  • Dundee

  • East Dundee

  • Elgin

  • Elk Grove Village

  • Fox River Grove

  • Geneva

  • Genoa

  • Gilberts

  • Glendale Heights

  • Hampshire

  • Hanover Park

  • Hoffman Estates

  • Huntley

  • Inverness

  • Itasca

  • Lake Barrington

  • Lake In The Hills

  • Lake Zurich

  • Lakewood

  • Mount Prospect

  • Palatine

  • Pingree Grove

  • Plato Center

  • Rolling Meadows

  • Roselle

  • Schaumburg

  • Sleepy Hollow

  • South Barrington

  • South Elgin

  • St. Charles

  • Streamwood

  • Wayne

  • West Chicago

  • West Dundee

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