The Doornbos Performance Guarantee
Our NATE certified technicians thoroughly test each installation to assure quiet and efficient operation. You will be provided with a full written report in detail. View our Job Check-out Form (PDF).
Clean & Check Guarantee
We guarantee that our full service clean and check will be the most thorough clean and check your equipment has ever had or it's free. View our Clean and Check Report. Should you require additional service during the season we will return for free. (No service charge).
No Surprises Guarantee
The price that was quoted is the price you pay!
- Our upfront and honest pricing includes taxes.
- Cleanliness Guarantee.
Our professional installers will take every precaution to prevent dust and dirt from contacting furnishings, carpets and flooring. We clean up to your satisfaction.
20 Year Workmanship Guarantee
We back up the craftsmanship of our installers with a twenty-year guarantee. Proper installation is the key to having a durable, efficient system.
Emergency Service Response Guarantee
With your new system we will include 24-hour priority service. Normal response time for emergency service is 2 hours or less.
100% Satisfaction Guarantee
We have a 100% satisfaction guarantee on all residential installations.
Doornbos Heating and Air Conditioning proudly provides HVAC service to Frankfort, Homer Glen, Mokena, Mount Greenwood, Oak Lawn, Orland Park, Palos Heights, Palos Park, Tinley Park, and the surrounding communities. Visit our service area page for more coverage details, call us at 708-423-9580, or request service online today.