Quality Heating and Air Conditioning Solutions


Guaranteed Mechanical provides reliable, friendly service for homeowners and business throughout Chicago’s western suburbs. Join the hundreds of customers who trust us for all of their heating and air conditioning needs.

Call Us Today at 630-692-3901


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How Can We Help?


HVAC Air Conditioners

Air Conditioning Units

We install all brands of AC units, but recommend Amana products for superior quality and best in class warranty

HVAC Maintenance plans

Financing Options

Apply for financing with our preferred vendor using our secure portal. This pre application will be a soft pull and not affect your credit score.

HVAC Air Quality

Air Quality

Air Duct Cleaning, Humidity Control, Air Purification units and more, all designed to improve the quality of the air you breathe

Residential HVAC


Preventative and Emergency service for customers in Aurora, IL and the surrounding area

Gas Furnace Maintenance

Heating (Replacing Furnaces)

Furnaces and Radiant Heating systems installed by local experts, heating your home effectively and efficiently

HVAC Ductless Systems

Ductless Systems

A popular alternative to window AC units, ductless air conditioners are more energy efficient and environmentally friendly

Air Conditioning Systems

Servicing All Major Brands

We have the experience to service nearly every make and model of furnace or AC unit.  For installations, we recommend Amana

Commercial Emergency Refrigeration Service

Emergency Services

Serving Chicago area businesses with HVAC system maintenance as well as specialized commercial refrigeration services

Looking to Design, Maintain, or Replace Equipment?


HVAC Commercial Maintenance

Replacement Equipment

Honest, dependable assessment of your current system. We won’t replace it if we don’t have to.

Amana Brand

Multi-Brand Specialists

We service all of the leading HVAC brands. When we install new units, we recommend the quality and best in class warranty of Amana.

HVAC Preventative Maintenance

Preventative Maintenance Programs

Keep your Heating and Air Condition systems working at their best. Don’t wait until you have an issue, call us today!

Residential HVAC

Residential Tune Up

Keep your air conditioning units performing at their best, and get the most out of your HVAC investment.

HVAC System Installation

New Construction/HVAC System Installation

Guaranteed Mechanical specializes in HVAC system installation for new construction projects for both residential and commercial clients.

HVAC Preventative Maintenance

Commercial Preventitve Maintenance

Maintenance plans designed to maximize the life of your HVAC equipment and provide the most efficient heating and cooling of your space.

Schedule Your Appointment

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Need service now? We answer calls 24/7. Just call 630-692-3901.