24/7 Emergency Service Available

At Cornerstone Mechanical LLC

Trusted Heating & Cooling Experts for 24+ Years

Owned and operated by Justin and Dara Chick, we are a local, family-run business dedicated to serving our neighbors in South Lyon and the surrounding Michigan communities. When you call us, you aren’t just getting a technician—you’re getting a partner who cares about your home as much as you do.

 

At Cornerstone Mechanical LLC, we believe that every home deserves a solid foundation of comfort and safety. Our team has been the trusted choice for Michigan homeowners for over two decades, providing high-quality, reliable mechanical services that stand the test of time. 

 

Emergency Readiness: We know that HVAC issues don’t follow a 9-to-5 schedule. That’s why we offer 24/7 Emergency Service to keep your family safe.

As an Authorized Airquest & American Standard Dealer, we provide top-tier equipment installations, and we service and provide warranty work for other all major brands, including Carrier, Lennox, and more.

At Cornerstone Mechanical

Local Family-Owned Heating & Cooling Experts

Dara Justin Jack Cornerstone Mechanical Michigan
Jake, Dara, Justin - Cornerstone Mechanical LLC of Michigan

Our Values

These core values guide everything we do:

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Integrity

Honest recommendations, upfront pricing, and zero hidden fees.

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Reliability

We show up on time, communicate clearly, and finish on schedule.

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Quality Workmanship

We focus on doing the job right — the first time.

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Continuous Improvement

We stay updated with the latest HVAC technologies and industry standards.

Furnace fan replacement

JUSTIN REPAIRS A FURNACE FAN

Our Story

With 24+ years of hands-on experience, our founder started Cornerstone Mechanical after working with major HVAC companies across Michigan. Over the years, we’ve repaired, installed, and serviced thousands of furnaces, air conditioners, water heaters, and indoor air quality systems.

We’ve earned our reputation through:

Today, Cornerstone Mechanical LLC continues to grow — but our commitment to quality and family-style service remains the same.

Providing the Foundation and More, For Your Heating and Cooling Needs

Contact Info

Experience the difference with Cornerstone Mechanical Today.

We stay in constant communication with our customers until the job is done. To get a free quote, or if you have questions or special requests, Call or Text us 1-248-880-7865.

Special 0% financing available. Subject to credit approval. Ask for details.

Copyright © 2026 Cornerstone Mechanical LLC
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Special 0% financing available. Subject to credit approval. Ask for details.