About
Lake Effect HVAC Company
About Lake Effect HVAC Company
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At Lake Effect HVAC, we believe great service starts with great people—and for us, that begins right here at home. As lifelong residents of Dowagiac, owners Gary and Tiara Zimmerman have deep roots in this community. We were raised here, built our family here, and are proud to serve the same community that helped raise our five children.
Our Mission: The Next Level of Service
We built Lake Effect HVAC with one purpose: to deliver the next level of service in heating, cooling, and home comfort. From the first phone call to the final walkthrough, we strive to exceed expectations with honesty, craftsmanship, and genuine care for the families we serve.
Experience You Can Trust
Gary brings nearly 25 years of HVAC expertise, with hands-on experience in installation, service, and system design. As a U.S. Army Veteran, he carries the same dedication, integrity, and discipline into every job we take on.
Faith-Based Values
As a Christian, faith-based company, we operate with principles that guide every part of our business—honesty, service, kindness, and respect. We believe in doing the right thing, even when no one is looking.
Family-Driven. Community-Focused.
After 24 years of marriage, we know the value of strong foundations—both at home and in business. Our family is at the heart of everything we do, and we’re committed to giving back to the community that has supported us for generations.
Whether we’re installing a new system, repairing an old one, or helping you plan for long-term comfort, our goal is simple:
Treat every customer like family and every home like our own.
Welcome to the Next Level of Service with Hometown Values
Who We Are
Lake Effect HVAC is a fast-growing, family-owned heating and cooling company rooted right here in Dowagiac, Michigan. We are committed to delivering the next level of service through quality workmanship, honesty, and a strong foundation of faith-based values.
Founded by lifelong residents Gary and Tiara Zimmerman, Lake Effect combines nearly 25 years of HVAC expertise with a mission to serve our community with excellence. But our company is built on more than great service — it’s built on great people.
At Lake Effect HVAC, we invest in our employees. We provide training, growth opportunities, and a supportive environment that helps every team member succeed. When you join our team, you’re not just filling a position — you’re becoming part of a company that values your skills, your goals, and your future. If you want to grow, be respected, and make an impact in your community, Lake Effect HVAC is the place to build your career.
Community Hero Discounts
At Lake Effect HVAC, we are grateful for the individuals who serve, protect, and support our community every day. As a small way to give back, we proudly offer 5% off to our Active Duty and Veteran Service Members, First Responders, and Seniors.
These discounts are our thank-you for the dedication, sacrifice, and care you give to others. It’s an honor to serve the people who serve our community.
About
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Recognitions
- Market One Best New Business of the Year 2025
- Duncan American Standard Distinguished Deal 2025
