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Heating

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Heating Services

When Chicago winters hit, a reliable heating system isn’t just a luxury. It’s essential. For over 100 years, Deljo Heating & Cooling has been a trusted provider of heating services in Chicago, Park Ridge, and nearby suburbs. From fast repairs to complete replacements, our expert team delivers dependable heater service and lasting comfort for your home.

We offer a full range of heating and furnace services. All of our services are performed by licensed, NATE-certified technicians who put your comfort first. If you would like to schedule heating services today, call us or reach out online to get started. If you would like to learn about our heating services in more detail, read on.

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Our Heater Services in Chicago, IL

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Furnace Repair

If your furnace is blowing cold air or making strange noises, Deljo’s team can diagnose and fix the issue quickly. We work with all major furnace brands and carry the tools and parts needed for same-day service.

Explore furnace repair services.

 

Furnace Maintenance

Prevent costly breakdowns and keep your furnace running efficiently with routine maintenance. Our furnace maintenance visits include detailed inspections, cleanings, and performance checks. The result? Optimal performance and energy savings while extending the life of your system.

Schedule furnace maintenance.

 

Furnace Installation

When it’s time for a new system, we’ll help you select and install the ideal furnace for your home. Our experts ensure every installation is energy-efficient, reliable, and built to last through Chicago’s harshest winters. Financing options are available to make your upgrade easier.

Learn about furnace installation.

 

Boiler Services

Our technicians are trained in complete boiler service in Chicago and the nearby suburbs. We regularly perform repairs, routine maintenance, and new installations. If your home relies on a boiler for heat, we’ll keep it operating safely and efficiently all season long. Explore our …

Heat Pump Services

Looking for an efficient alternative to traditional heating? Heat pumps provide year-round comfort with both heating and cooling capabilities. Our team installs and maintains top-quality systems designed to perform in Chicago’s unique climate.

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Ductless Systems

For homes without ductwork, ductless mini-split systems offer powerful zoned heating with simple installation and flexible control. Deljo’s experts design and install ductless systems that deliver personalized comfort for every room.

Learn more about ductless systems.

 

Zone Control Systems

Tired of uneven temperatures around your home? Zone control systems allow you to customize heat by room, saving energy and improving comfort.

Learn more about zone control systems.

Preventative HVAC Maintenance Program

Members of Deljo’s HVAC maintenance program enjoy annual tune-ups, priority service, and exclusive savings. Enrollment in this plan easily pays for itself and provides you with peace of mind while ensuring all manufacturer warranties are maintained.

Join our maintenance program.

 

Emergency Heating Service

Heating problems rarely wait for normal business hours. That’s why Deljo offers 24/7 emergency heating service in Chicago and the surrounding suburbs. Whenever you need us, we’ll be there to restore your comfort quickly and safely.

Learn more about our emergency heating services.

 

Why Choose Deljo Heating & Cooling for Heating Services?

Since 1922, Deljo has been Chicago’s trusted partner for dependable heating services. We combine old-fashioned integrity with modern expertise. Every customer receives transparent pricing, expert workmanship, and flexible financing options.

Schedule Heating Services Today

Looking for professional heating service in the Chicago area, including Park Ridge? Whether you need furnace repair, boiler maintenance, or a brand-new heating system installation, Deljo Heating & Cooling is ready to help.

Call us today or contact us online for more information or to schedule service.

For Heating Installation & Service
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Learn More About Your Homes Heating & Cooling

Frequently Asked Questions

How often should heating systems be serviced?

All heating systems should be serviced annually, ideally before the winter season. Regular maintenance helps prevent breakdowns, ensures efficiency, and can extend your system's life by years.
Common warning signs include:

• Unusual noises
• Uneven heating
• Higher than normal energy bills
• Strange odors
• Frequent cycling on and off
• Failure to reach the set temperature
Furnaces typically last 15-20 years, while boilers can last 20-30 years with proper maintenance. However, older systems become less efficient over time, so replacing a functional system might still be the most cost-effective option.
Boilers use heated water and pipes to warm your home through radiators or in-floor heating. Furnaces heat air and distribute it through ductwork using a blower motor. Boilers generally provide more even heat and better humidity, while furnaces can heat spaces quickly and work with central air conditioning.
Common causes include:

• Thermostat issues
• Pilot light problems
• Electrical issues
• Dirty filters
• Low fuel pressure
• Mechanical failures If your heat stops working, our emergency service is available 24/7.
Regular maintenance is crucial for efficiency. Also consider:

• Upgrading to a high-efficiency system
• Installing a programmable thermostat
• Checking insulation
• Sealing air leaks
• Changing filters regularly
In Chicago's climate, a high-efficiency system often pays for itself through reduced energy bills. Newer systems can be up to 95% efficient, compared to 60-70% for older models. We can help you calculate potential savings for your specific situation.
You can:

• Change or clean filters monthly
• Keep vents/radiators clear and clean
• Monitor thermostat function
• Listen for unusual noises
• Check for visible issues

However, leave technical maintenance and repairs to professionals to ensure safety and warranty compliance.
Consider replacement if:

• Your system is over 15 years old
• Repairs would cost more than 50% of replacement
• Your energy bills are consistently rising
• You're experiencing frequent breakdowns

Our technicians can provide an honest assessment based on your system's age, condition, and repair history.

Schedule Heater Service in Chicago, IL Today

When you need help with heating in Chicago, we’re here to help. Call us today at 773-888-4229 for more information or to schedule same-day heater service. Our technicians will identify and address the root cause of your heater issues.

Client Testimonials

Read the opinions of our satisfied customers.

Call Now 773-829-4295 Schedule Your Service

Deljo’s heating and cooling team was awesome to work with. As a first-time homeowner, I really appreciated how clearly they explained everything and answered all my questions. From the quote to the install and follow-up, the service was top-notch. Highly recommend!

Lindsey A. Chicago, IL

Matt did an amazing job. He serviced our home and our rental property. He gave us options to help our systems run more efficiently. He also told us about Deljo’s new plumbing inspection which was very affordable. He is great!

Jordan R. Chicago, IL

We had a problem with our Humidifier and called Deljo. Jesus came out to help and was amazing. He was extremely knowledgeable, detail oriented, and super courteous. Amazing customer experience!

Jeff C. Chicago, IL

Jordan and Jesus were extremely helpful and knowledgeable! We would 100% work with them and have them back. They were both very professional and efficiently fixed our heating system.

Emily L. Chicago, IL

Shout out to Ernesto for coming out and servicing our furnace and air con. Deljo provides a great service and glad to trust them with our HVAC for our small business.

Lauren H. Chicago, IL

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