821 E. Lincoln Hwy. DeKalb, IL. 60115 • 1010 Jorie Blvd., Suite 390 Oak Brook, IL. 60523

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Breathe in a safer home

How is your indoor air quality? Allergies? Asthma? Nose & throat irritation? Dry skin? According to the Environmental Protection Agency, the air we breathe indoors is seven times more polluted than our outdoor air - most particles in the air we breathe are smaller than one micron (1/25,000th of an inch)!

Trust your air quality to us

1 Source Mechanical Inc. is your local indoor air quality expert. We have the knowledge and equipment to improve your home or business air quality. By using the latest technology in air particle measurement and logging data, we can select the proper equipment for your current conditions.

E.P.A and OSHA protected air

Don't wait to take a stand about the quality of your home or business - puy our highly-skilled team to use to protect your air. Our air quality experts are E.P.A certified and OSHA trained so you can breath easy with peace of mind.

Ensure energy efficiency too!

While we're checking the safety of your air, why not have us make sure it's flowing as efficiently as it should be? Get a FREE estimate on HVAC work for your home or business that delivers maximum energy savings at the best price possible.

- Free Estimates

- 24/7 Emergency Service

- 100% Financing Available

- All Repairs 1 Year Labor Warranty

- Fully Insured, Licensed and Bonded

Why choose us?

No service fee within a 20 mile radius!


1 Source Mechanical Inc. is your locally owned and trusted heating, air conditioning, plumbing, and refrigeration contractor. We serve all of DeKalb County and the surrounding areas including all of DeKalb, Sycamore, Genoa, Malta, Sandwich, Cortland, Hinckley, Kingston, Kirkland, Aurora, Elgin, Maple Park and Elburn.