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Professionals in Heating and Cooling – Lake Forest, IL

If you need HVAC service in Lake Forest, you need look no further than Deljo Heating & Cooling. We’ve been serving homes and businesses throughout the greater Chicagoland area since 1922, and when you’re in need of assistance, we hope Deljo will be the first company you think of for installation, maintenance, and repair services.

Heating Services in Lake Forest

Whatever your heating issues, Deljo Heating & Cooling can take care of it.

  •  Furnace installation – No matter how well you care for it, soon or later, you’re going to need a new furnace. When that need arises, remember that our technicians at Deljo are fully licensed, and we install only the highest quality heating systems available today.
  •  Furnace maintenance – Regular maintenance performed by our expert technicians can prolong the life of your heating system and help reduce your energy costs.
  • Furnace repair – The last thing you want is a faulty furnace that dies on you, leaving you freezing when a winter blizzard is blowing outside. We also know you can never tell when your furnace is going out on you, and that’s why the furnace repair specialists at Deljo are available 24/7 to handle any heating emergency that occurs, no matter the time or the day!
  • Boiler installation, maintenance and repair – Properly maintained, the average boiler should last 10 – 15 years, and if yours is nearing the end of its life span, you may need to consider installing a new boiler before the worst of the winter weather arrives. Deljo can do that for you, and we also provide expert boiler maintenance and repair services. 

Air Conditioning Services in Lake Forest

The same goes for cooling services from Deljo Heating & Cooling. If you need assistance, Deljo is here to provide it in many ways.

  • Air conditioning installation – When it comes to AC installation in Lake Forest, you don’t want to hire just any company. Let our licensed technicians perform the job to your complete satisfaction.
  • Air conditioning maintenance – Regular maintenance of your AC system performed by highly qualified technicians extends the life of your AC unit and can lead to savings costs of up to 30% during the heat of summer.
  •  Air conditioning repair – There’s no need to sweat it out if your AC unit has quit working or it’s not cooling your home or business. The expert technicians at Deljo are available to provide relief 24/7.
  • Ductless mini-split installation, maintenance, and repair – Ductless mini-split systems are a great way to heat and cool older homes that don’t have ductwork. They also give you the option of heating or cooling individual rooms to your comfort level. If you want a mini-split system for your home in Lake Forest, or you need maintenance or repair services, Deljo can handle the job for you.  

Indoor Air Quality Services in Lake Forest

The quality of the air in your home plays an important role in the health of your family, and to help keep the air you’re breathing as clean as possible, Deljo Heating & Cooling can install and maintain either the Carrier Infinity Air Purifier GAPA or the REME HALO® Whole Home In-Duct Air Purifier.

Asian man sitting on sofa with his caucasian wife and showing smartphone with home air condition app. Concept of smart home. Idea of domestic lifestyle. Smiling multiracial couple in modern apartment


Client Testimonials

Read the opinions of our satisfied customers.

I always use Deljo. The entire staff is amazing from intake calls to install. They were fast, professional and gave us a fair price.

Monica OConnor Chicago IL.

Joe was great. We came home to a cold house on a Sunday night and he came out to diagnose the issue right away. Very knowledgeable, very friendly.

Kyle Sant Chicago IL.

We’ve been using Deljo for several years and have had a great experience with them. They’re prompt, reliable, and trustworthy. The technicians (David was the most recent) have been great.

Ari Telisman Chicago IL.

My hot water heater had some leaky pipes due to corroded unions. The repair took longer than I thought due to some unforeseen circumstances. Unfortunately after the repairs the water heater stopped working...

Maria Pradd Chicago IL.

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Our Service Areas

Contact Deljo Heating & Cooling today. We look forward to hearing from you and helping out with all your indoor comfort needs.

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