(708) 499-HEAT (4328) or (708) 423-9580

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Quality Work … Since 1927!
  • “ Thank you and your staff for your help this holiday weekend! …your family installed my dad’s first furnace in 1955 & every one since. What a legacy! ”
    - Dorothy Flynn
  • “ You have an excellent team, Mr. Doornbos. ”
    - Jeanne Sencion
  • “ You and all the people we dealt with were really nice. If we can ever recommend your company to anyone, we certainly will. ”
    - Ray Szarzynski
  • “ I called Doornbos because my cousin said your company is honest and competent. He was right!! ”
    - Karen Darr
  • “ I have been dealing with Doornbos for over fifty years. Thank you. ”
    - Robert Ulatoski
  • “ It’s awfully nice to know there are still people like you out there when you need someone's help. ”
    - Dave Gaichas & Family
  • “ I told all of my co-workers to call Doornbos! They are the best! ”
    -Mr. & Mrs. Yodka
  • “ Doornbos always comes through and will always be my first choice in my heating and air conditioning needs. ”
    - Joe Kriss
  • “ Thank you for keeping the great service your company has been providing its grateful customers for nearly a century. ”
    - Bernice and Jim
  • “ I will always call your company for service. Thank you so much for an excellent job. ”
    - Mrs. W. Gragido
  • “ The service technicians that respond to our needs have been of great support and help to our skilled maintenance staff. ”
    - William Glotz, Maintenance Manager
  • “ I would like to commend Doornbos Heating and Air Conditioning for outstanding service and professional
    workmanship. ”

    - Don Dreher

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Commercial Customer Testimonials

Find out what our customers are saying by reviewing the testimonials below.

“The service technicians that respond to our needs have been of great support and help to our skilled maintenance staff. They are always willing to give advice and instruction to help eliminate some of the service calls that could be a simple fix that we could handle, saving additional costs to our company. I am extremely pleased by the quick response time considering our distance from the city.”

— William F. Glotz, Maintenance Manager
Kmart Distribution Center, Manteno, IL

“We were very pleased with Doornbos Heating and Air Conditioning for the fine job installing our three new boilers. The job was done in a professional and timely manner. We appreciate a job well done.”

— Oscar N. Carrasco, Pastor
First United Methodist Church, Oak Lawn, IL

“We found a need to replace our water tanks and boilers which service all the units in our building. When the Doornbos servicemen showed up, they were neat in appearance, polite and well spoken. They were totally professional in their work and when they left at the end of the day, they removed any/all debris. They worked with us scheduling the inside condo unit work that had to be done with each unit as to not inconvenience us in any way.”

— Penny R. Mulcahy, President
Nottingham Manor Homeowners Association, Chicago Ridge, IL

“On March 11th, the heat went out in the North Bay of the carwash and at the same time the boiler went down that controls the underground heat and hot water to wash cars. Also at the same time we were having problems with our walk-in-cooler. Within thirty minutes a Doornbos service technician was at the location. Within four hours everything was fixed and working. I would like to commend Doornbos Heating and Air Conditioning for outstanding service and professional workmanship.”

— Don Dreher
Kean Bros, Inc., Evergreen Park, IL

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