Your Heating and Cooling Experts in Lemont, IL, and Surrounding Areas

We’re comfort’s best friend.



We are the leading company for all of your air conditioning needs. If you need repairs, maintenance, or a brand new system installed,
the technicians at All Seasons Heating and Air Conditioning are the qualified and professional crew for the job.



Don’t get left in the cold! Is your furnace acting up, blowing cold air, or making too much noise? Our experienced team of professionals is here to keep your home warm and cozy.


Indoor Air

Our team offers a diverse range of systems and products, each suited to solving different indoor air quality complications including air filtration systems, germicidal UV lights, and more.



For all of your commercial heating, cooling, and refrigeration needs from Lemont to Hinsdale. We offer service, repairs, and installation on buildings, schools, offices, restaurants, and more.


At ComforTemp, We Are Comfort's Best Friend.

We offer quality repairs, installation, and other heating and air conditioning services throughout the Cook, DuPage, and Will County areas.

Read What Our Clients Have To Say
About Our Service

Incredible AC Installation

Incredible! No nonsense and very detailed in the install. Clean and professional. Put down drop cloths to protect my flooring and all the old equipment was taken out! Very happy and would recommend to others!

Anthony K.

Professional, Timely Furnace Repair

Furnace stopped working on Sunday. Called on Monday morning, they had someone out on Monday afternoon. Very professional, explained everything he was doing, and did the timely. Would use again.

Kyle C.

Knowledgeable HVAC Company with Great Customer Service

Very knowledgeable technician and great customer service. This company is the best they brought the needed parts with them and planned ahead and finished the job quickly and also gave a high level of detail. I highly recommended this company.

Deanna S.

Join Our Comfort Club!

Regular maintenance is a cost effective way to maintain comfort, increase efficiency (saving you money on your utilities), and promote longer equipment life. Our professional technicians will pay attention to potential problems before they become big ones and look for more ways to improve your comfort and equipment’s efficiency.

  • 2 Visits Per Year
  • Priority Response Time
  • Longer Equipment Life
  • Increased Comfort and Efficiency
  • Discounted Diagnostic Fees
  • Parts & Labor Warranty
  • Membership Pricing

Exclusive Offers…Just For You!


Proudly Serving Illinois

Catch Up On The Latest With ComforTemp!

The Importance of air conditioner maintenance. AC unit fan.

Video – The Importance of Air Conditioner Maintenance

27 May 2022

The best time of year to have your AC serviced is spring, even if you reside in a locale with pretty warm weather all year long.

spring money saving tips

Spring Money-Saving Tips

16 Apr 2022

Everyone loves to save money, and it’s a good idea to review different aspects of your budget now and again to see if there are more opportunities you have missed in the past. In the springtime, considering how you can reduce your energy bills is always a great idea.

HVAC Noises

Listen to Your HVAC System

24 Feb 2022

Think of your heating and cooling (HVAC) system components as the instruments in a quiet symphony.  When all the pieces are in good condition and work in harmony, the only sounds you will hear will be the quiet hum of a motor and whisper of air as it exits registers in your Illinois home.  An…

What Does AFUE Mean?

What Does AFUE Mean?

10 Feb 2022

While an air conditioner’s efficiency is measured by its SEER (Seasonal Energy Efficiency Ratio) rating, an electric or gas- or oil-fired furnace’s efficiency is measured by its AFUE, or average fuel utilization efficiency. This standard measurement is given in percentages, letting you know how much of your fuel is actually used to heat your Illinois home and how much fuel is wasted.