Mundelein Heating Company –
All Temp Heating & Air Conditioning Inc.

We are the company that homeowners in Illinois contact for all of their new furnace installations in Mundelein. We are a family owned and operated business with over seven decades of experience and dedication. We work on all sizes and models of both furnaces and air conditioners. We are dedicated to providing quality workmanship in our community. We provide a wide range of services to meet the needs of our customers in Mundelein.

Heating Repair and Installation Services

Some of our most popular HVAC services are:

  • Air Conditioner

  • Air Conditioning Company

  • Air Conditioner Repair

  • AC Repair

  • Furnace

  • Heating Company

  • Furnace Repair

  • Furnace Installation

  • New Furnace

  • And so much more…


  • Factory trained technicians who are NATE certified.
  • Our installation crews have years of experience.
  • Available 24 hours a day, 365 days a year.
  • As a leading Lennox dealer we carry the highest quality products.

Our customers will be in safe hands with us because all of our employees are highly trained and certified. We also provide emergency service for those in need. Whatever the situation is, we have the experience and skill to address your HVAC issue.

Mundelein, Illinois

Mundelein is a village in Illinois that is thirty-five miles from Chicago. The village has a population of 31,064. The area was first inhabited by the Potawatomi people as early as in 1650. In the early nineteenth century, the first European inhabitants started settling in the area. The village was first known as Rockefeller, but in 1924, the name was changed to Mundelein, which was named after Archbishop George Mundelein. This village has many exciting things to see and do.

This house is where we did a Mundelein furnace repair job – All Temp Heating & Air Conditioning Inc

The Northern Lakes Arts Collective is where art lovers can go. The center has displays and exhibits of art done by the local residents of this village. You can see hand blown glass, paintings, sculptures, photography, and more.

The village is a vibrant community and visitors can see nature and wildlife in the village by going to the Lake County Forest Preserve Trails. The Lake County Forest Preserve Trails is over 165 miles and the scenic walking trails will allow visitors to see the beauty and nature here.

The Barefoot Bay Family Aquatics is a fun place that the entire family can enjoy. There is an Olympic pool, waterslides, a wave pool, and a concession stand. Families can enjoy the water activities, then grab a snack too.

The Perter Patterson Glassworks is an amazing place to go in the village. Visitors can experience glasswork creations being made right in front of them. You can even join in and create a glass piece and have a piece of the glassworks and the village too. At the end of the day, you and your family can head to the heart of the village by going downtown. Here is where there are many local ran boutiques, shops, and restaurants.

All Temp Heating & AC is the expert that Mundelein homeowners contact for all their air conditioner repairs and needs. We can get your ac working effectively again when you give us a call today!

Cold Snap Won’t Stop Us!

We got an emergency call from a homeowner whose heating kicked out during a cold snap. They were very concerned about staying warm during the winter, but thankfully we just needed to perform some minor repairs and make sure their electrical system was in good order. They were very thankful they had a reliable Mundelein heating company to call.

Our team started the heating repairs

Our technician arrived at the home within an hour of the homeowner calling us. The homeowner was very thankful to see us there so quickly, and he showed our technician where the furnace was located in the basement. Our technician started checking out and inspecting the furnace. The first problem he noticed was the furnace was very dusty. He started cleaning the furnace by removing all the dirty and debris, then he removed the old air filter and installed a new one.

We did some work as an HVAC Contractor in Mundelein

Our technician turned on the furnace, but the pilot light wouldn’t stay lit. He quickly figured out that the ignitor needed replaced, so he removed the old one and installed a new one. Our technician then started checking the power supply and circuit breaker to ensure that there wasn’t any breaker that had been tripped or a blown fuse, which there wasn’t. The last thing our technician wanted to do before he turned on the furnace was to check the thermostat. Many times a problem with a furnace is based around the thermostat. Sometimes the settings are not accurate or a battery may need to be changed, which is why it is always important to check the thermostat. Our technician changed the battery and checked the contacts. He removed a little bit of dust that was present on the contacts.

After a complete furnace maintenance was performed and a few small repairs, our technician turned the furnace on. The furnace igniter lit immediately and then the blower kicked on. The home was warming up fairly fast for the family. Our technician cleaned up his work area and put his tools in the truck, then he went to talk to the homeowner to let him know the repairs that he done on his furnace.

Our technician let the homeowner know that his furnace should not cause him any issues now because he did a complete and thorough maintenance on it. He let the homeowner know how important it is to have the maintenance done prior to the winter months. The homeowner was just thrilled to know that his furnace was working and he wouldn’t have to replace it with a new one, which is what he was fearing the most about the furnace issues. Now, the homeowner knows to call the heating repair experts in Mundelein anytime he has a problem with his furnace.

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