Serving the Chicago NW Suburbs


Leith Heating & Cooling, Inc. is a veteran and family owned and operated business with over 35 years of combined HVAC industry experience. Your heating system is one of the most expensive and necessary pieces of equipment in your home, so make sure you trust it to the best in the Fox Valley!

Furnace Repairs
You can trust your repairs to your local, veteran owned company to get you back up and running on those short, cold, Midwest winter days.
Furnace Maintenance
With seasonal maintenance from Leith Heating and Cooling, Inc., you can avoid costly breakdowns when you need your furnace the most.
Furnace Installation
Stop paying more than necessary in energy costs. A new energy efficient model can help pay for itself with reducing your monthly utility bills.

Install, Repair & Maintain

As an American Standard authorized dealer, Leith Heating and Cooling, Inc. is able to provide one of the most reliable brands on the market. We offer both commercial and residential heating service, repair, and installation to keep you warm all winter long.

24-7 Repair services

Leith Heating and Cooling, Inc. provides dependable heating system repairs in the Fox Valley Area whether you have a boiler or a gas furnace. We specialize in American Standard, but we service all makes and models. We have trained, skilled and certified technicians to accurately diagnose and repair your heating problem.

We strive to eliminate stress and reduce inconvenience to our customers when their costly heating system needs repairs. Leith Heating and Cooling will keep a clean work area, tidy up after a repair job and take away old parts when leaving a repair call.

We offer 24/7 emergency service- that means we are available when you need us the most.

Regularly Scheduled Maintenance

Annual heating inspections are an important safety issue. Small cracks in a heat exchanger or problems with a flue could allow deadly carbon monoxide gas to seep into your home. A trained service technician from Leith Heating and Cooling Inc. knows how to spot the danger signs in the system.

Using Leith Heating and Cooling to maintain your heating system will save you from more frequent breakdowns. Small issues can lead to much larger issues that could result in expensive repairs. Our trained technicians can often predetermine these problems with expertise, experience and advanced diagnostic tools. We can fine tune your system to make sure its at its peak performance when you need it most during our cold Chicago winters.

Keeping your furnace in it’s peak performance will help lower your utility bills. The dirtier your furnace is, the harder it has to run and it has to work longer to produce the same results.


The life your heating equipment can extend up to with annual maintenance

The number of years you could add to your system with regular maintenance


The amount studies have shown, you can save with routine maintenance

Trained technicians perform a precision tune-up including the following procedures:

  • Test system for carbon monoxide
  • Test for gas leaks
  • Test ignition system for safe and proper operation
  • Test safety and control circuits
  • Inspect air duct system and airflow
  • Inspect for combustible material around furnace
  • Perform Visual inspection on heat exchanger
  • Tighten and inspect all electrical wiring
  • Test exhaust system for proper venting
  • Measure amperage and voltage of motors
  • Measure and adjust gas pressure for peak efficiency
  • Clean and lubricate blower assembly
  • Brush, clean, and vacuum heat exchanger
  • Measure temperature difference between supply and return air
  • Calibrate and level thermostat

Ensure Proper Installation

One of the biggest investments you will make in your home is a new heating system. You may have an outdated system in your home that is oversized or not keeping your comfortable. You don’t need to wait until your system fails to replace it. In fact, replacing your furnace before the freezing Chicago winter would be much better than an emergency replacement because it would be at your convenience.

Replacing your outdated heating system is a perfect time to make sure that your home is warm and comfortable. With properly designed size, style and type of equipment, Leith Heating & Cooling, Inc. can help you enjoy greater comfort in your home. We can work with you within your budget and needs, whether you want a 80% efficiency furnace or a 97% high efficiency furnace to properly heat your home. Leith Heating and Cooling is here to help with every stage from free estimates to knowledgable staff to 100% guarantee on installations.