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Your Trusted Heating, Cooling, and Indoor Air Quality Experts 

Honesty. Reliability. Innovation.

O-ZONE HEATING & COOLING serves as a leading Heating and Air Conditioning Contracting Firm in the Chicagoland area. We’re a team of fully-certified professionals who tackle everything from complex large projects to smaller scale jobs. Fueled by our commitment to excellence, we go the extra mile to make sure clients are completely satisfied with our work. Call us today to schedule a consultation. Quality service at a fair price. We are licensed, bonded and insured.


What Our Clients Have to Say

Great company to work with! Very professional and courteous. They take the time to explain what it is they're doing and keep you informed! I would highly recommend O-Zone HVAC to anyone!

Elliott M.

Ozzie and the O-Zone team are good people who pay attention to detail. We have always been pleased with their work, and we highly recommend them to our friends and neighbors.

Michael P.

Very professional installation. The crew showed up on time, worked diligently, and went over every aspect of the new equipment they installed on the furnace systems. They answered all my questions and explained everything well!

James S.

Trane Home
Nikro PDU4000 HD
Relenteless Testing
How Does a Central Air Conditioner Work? — HVAC Repair Tips

How Does a Central Air Conditioner Work? — HVAC Repair Tips

Central air conditioner does not cool, too noisy or does not run? This video provides information on how a central air conditioner works and offers troubleshooting tips to assist you in diagnosing and repair. Here is a list of the most commonly replaced parts associated with each air conditioner symptom: Central air does not cool at all: contactor, run capacitor, condenser fan motor, capacitor Central air is noisy: fan blade, condenser fan motor, contactor, compressor Condenser fan motor does not run: run capacitor, capacitor, condenser fan motor Condensing unit does not run: run capacitor, capacitor, contactor How to disassemble your central air conditioner: For more DIY videos including part replacement and help finding your model visit the repair help section of our website: Click here to purchase replacement central air conditioner parts: All of the information provided in this central air conditioner troubleshooting video is applicable to the following brands: Amana, Bryant, Carrier, ICP, Kenmore, Lennox, Luxaire, Payne, Trane, York Connect With Us! Join our free VIP email list for discounts and money-saving tips: Check out our blog: Don't forget to like and comment on this video, and subscribe to our channel!
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