Seasonal Maintenance

Southeast Michigan

Estimates Provided Within 2-3 Days

Warranty Options Available

Weekend Emergency Services

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Keep Your HVAC System Running Strong Year-Round

At Alliance Mechanical, we've been helping Southeast Michigan businesses maintain comfortable indoor environments since 1969. Our seasonal maintenance services ensure your heating and cooling systems perform efficiently when you need them most, preventing costly breakdowns and extending equipment lifespan.

With over 100 years of combined experience, our locally owned team delivers reliable mechanical services backed by solid warranties. We provide estimates within 2-3 days and offer weekend emergency services when you need immediate help. Contact us today to schedule your seasonal maintenance.

At Alliance Mechanical, we've been helping Southeast Michigan businesses maintain comfortable indoor environments since 1969. Our seasonal maintenance services ensure your heating and cooling systems perform efficiently when you need them most, preventing costly breakdowns and extending equipment lifespan.


With over 100 years of combined experience, our locally owned team delivers reliable mechanical services backed by solid warranties. We provide estimates within 2-3 days and offer weekend emergency services when you need immediate help. Contact us today to schedule your seasonal maintenance.

Why Choose Us

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Estimates Provided in 2-3 Days

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Weekend Emergency Services

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90‑Day Labor Warranties on Repairs

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1‑Year Manufacturer & Install Warranties

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Over 100 Years of Combined Experience

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Locally Owned Since 1969

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Spring HVAC Maintenance

Prepare your cooling system for summer with our comprehensive spring tune-ups. We'll clean coils, check refrigerant levels, and ensure peak performance.
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Winter HVAC Maintenance

Avoid heating failures when temperatures drop. Our winter maintenance service inspects furnaces, heat pumps, and thermostats to keep you warm.

Our Recent Projects

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Here's what our satisfied customers are saying...

At Alliance Mechanical, we take pride in providing exceptional commercial installation, repair, and seasonal maintenance to our customers. We would be grateful if you could share your thoughts about our contractors with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Alliance Mechanical and let others know what you think.