QUALITY. VALUE.
INTEGRITY.

THE HOME COMFORT EXPERTS YOU CAN
TRUST FROM START TO FINISH

Service vehicle for Illiana Heating & Air Conditioning in Cedar Lake, IN.

When those cold Midwest winters come rolling through, a heating system expertly installed will reliably keep your family warm and energy bills low.

With our professional service and installation, you can expect a system that offers exceptional home cooling and comfort with quiet operation and efficiency.

Increase your efficiency, lower your bill, and control your home’s temperature from anywhere. Breathe a breath of fresh air with quality products.

The BEST way to keep your home comfortable! Extend the life of your existing system with a precision tune-up.

Illiana Heating & Air Conditioning team in front of company service vehicles in Crown Point, IN.

WE go

Above and Beyond

To serve You

Since 1987, we’ve been helping folks throughout the Lansing and Northwest Indiana area enjoy total indoor air comfort in their homes and businesses. Nationally recognized as both the Residential Contractor of the Year and the Best Contractor to Work For, Illiana cares about its employees as much as its external clients.

Testimonials and Reviews

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“I was pleased as usual with the technician who maintained my furnace for the coming winter months. I cannot remember his name, but I was very pleased with his work, as I always am with your folks who also service my A/C in the summer.

Thanks again,

Arthur M. Davis
1379 Charlevoix Way
Schererville IN”
- Arthur D.

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“Andres has come to perform maintenance service on our AC and furnace for a couple of years now. He is courteous and efficient and has always advised us well.”

- Pam D.

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Goldstar membership icon for Illiana Heating & Air Conditioning's HVAC maintenance program.

GOLDSTAR MAINTENANCE PLAN

Get to the front of the line and make maintenance a breeze with a Goldstar membership, only from Illiana Heating & Air Conditioning. With a Goldstar membership contract, not only will you guarantee yourself the great service of our professionals, you’ll also receive the following benefits:

Guaranteed demand service appointments within 24 hours

Included preventive maintenance visits for your covered equipment

Never charged overtime service calls or rates

At least a 15% discount on repairs and consumables

Latest tips and tricks

Why Is the Furnace Pilot Light Going Out? Gas burner flame abstraction long exposure.

Why Is the Furnace Pilot Light Going Out?

November 29, 2024

This issue happens more often than not with older furnaces, and it could be a sign you are ready to upgrade your St. John home’s heating and cooling system with a new model. At the 10-year mark, furnaces start to lose efficiency and begin breaking down more frequently.

MORE
Heating season. The use of gas as heating at home in winter, the cold season. The concept, the model of the house stands near the flame of a gas boiler.

How Does My Gas Furnace Work?

November 15, 2024

Our team at Illiana Heating & Air Conditioning, Inc could help you save big bucks on your monthly utility bill by performing a furnace replacement.

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Why Do I Need a Humidifier in the Fall? A cup of tea in front of a window with autumn view.

Why Do I Need a Humidifier in the Fall?

October 30, 2024

Fall is a beautiful time of the year—but it comes with a drop in humidity levels. If you’re concerned about the humidity change and want to enhance your comfort inside your Dyer home, installing a humidifier is an excellent option.

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Need financing?

Illiana Heating & Air Conditioning has you covered!

We understand how tricky it can be when your HVAC system breaks down. We partner with Wells Fargo, Ally, and Fortiva to provide financing options so we can help relieve some of the stress. You may qualify to finance a new system installation or repair service. Go to the website below and complete the application form to find out what you are eligible for.

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LET US HELP YOU EASE THE STRESS OF THOSE COSTS

Adding or replacing a heating and cooling system affects your finances as much as your home comfort. Fortunately, we’ll help you take advantage of monthly promos and specials Illiana Heating & Air Conditioning is offering.

Coupon for  OFF REPAIR. Only valid toward repairs. Restrictions may apply. Call for more details. 219-627-1589

Join the Illiana Team!

WE SERVICE ALL BRANDS

Illiana Heating & Air Conditioning service vehicle with company truck wrap.