Providing Comfort and Expert Service Since 1927


Over 90 years ago, Fred Doornbos started his heating business. Fred’s philosophy was to do only quality work and the referrals would eventually keep him busy. Fred was right. One job led to another, and today our reputation for quality work continues, as does our philosophy. At Doornbos, it is all about quality workmanship.
We uphold the old-fashioned values which have built lifelong and multigenerational relationships with our customers. At Doornbos, we recognize that honesty, integrity, and personalized attention are as important as expert workmanship and unmatched products.
Our professional standards ensure quality results on every project Doornbos performs. Doornbos guarantees satisfaction.

Maintenace from Doornbos Heating and Air Conditioning










Gas Furnace Installation in Chicago, IL 60655
Gas Furnace Installation in Alsip, IL 60803
“This is my second furnace/AC install by Doornbos in the last 16 years. The installers do quality work. Everyone I have dealt with at Doornbos from the sales to office team are very helpful.”
– Mary G.
Gas Furnace Installation in Chicago, IL 60655
“Everything was very good and timely!”
– MIKE B.
Gas Furnace Installation in Chicago, IL 60655
“Very professional. Left me feeling confident that my issues were resolved.”
– Mike B.
Gas Furnace Installation in Alsip, IL 60803
“This is my second furnace/AC install by Doornbos in the last 16 years. The installers do quality work. Everyone I have dealt with at Doornbos from the sales to office team are very helpful.”
– Mary G.
Gas Furnace Installation in Chicago, IL 60655
“Everything was very good and timely!”
– MIKE B.

OUR PROMISE TO YOU
We promise to maintain our long tradition of excellence by giving you our guarantees of professionalism in service, technology, installation, and people.

SERVICE
Factory-authorized, NATE- and EPA-certified technicians are ready to serve you 24 hours a day, every day.

INSTALLATION
Our quality standards are high and our installers adhere to our long tradition of fine workmanship. We are proud of every job we do.

TECHNOLOGY
Our industry has come a long way since 1927, and we have been on top of it all the way. Our advanced technology in servicing, installing, and testing helps us bring you the best for your money.

PEOPLE
Doornbos employees are knowledgeable, hardworking, good people focused on doing a superior job. We take pride in our work and the company’s reputation for customer satisfaction. Every Doornbos employee has ongoing continuous training to remain on top of our field.
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