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HVAC Contractors

Troy, MI and Surrounding Areas

Estimates Provided Within 2-3 Days

Warranty Options Available

Weekend Emergency Services

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HVAC Solutions for Commercial and Industrial Properties

Alliance Mechanical has served Southeast Michigan since 1969, specializing in planning, designing, fabricating, and installing commercial HVAC comfort systems. As a union company with over five decades of experience and more than a century of combined team expertise, we deliver high-quality heating, cooling, and ventilation solutions. From initial design and planning through fabrication and final installation, we focus on efficient, reliable performance supported by modern technologies and updated design processes.

As a locally owned company, we understand the climate demands of this region. Our services include detailed estimates delivered within two to three days, emergency support on weekends, and comprehensive warranties covering both labor and installations. We back our work with 90-day labor warranties and one-year manufacturer guarantees. Contact us today to discuss how we can support your commercial heating and cooling needs.

Alliance Mechanical has served Southeast Michigan since 1969, specializing in planning, designing, fabricating, and installing commercial HVAC comfort systems. As a union company with over five decades of experience and more than a century of combined team expertise, we deliver high-quality heating, cooling, and ventilation solutions. From initial design and planning through fabrication and final installation, we focus on efficient, reliable performance supported by modern technologies and updated design processes.


As top-tier HVAC contractors in Farmington Hills, MI, we understand the climate demands of this region. Our services include detailed estimates delivered within two to three days, emergency support on weekends, and comprehensive warranties covering both labor and installations. We back our work with 90-day labor warranties and one-year manufacturer guarantees. Contact us today to discuss how we can support your commercial heating and cooling needs.

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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Building Automation

Modern buildings need intelligent control systems that optimize energy usage and maintain consistent comfort levels throughout all occupied spaces.

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High-Efficiency HVAC

Our high-efficiency systems reduce operational costs while providing reliable climate control for commercial facilities of all sizes and configurations.

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HVAC Duct Services

Properly designed and installed ductwork provides optimal airflow distribution, maintaining temperature consistency and improving overall system performance throughout your building.

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HVAC Services

The service department provides commercial HVAC preventative maintenance, rooftop unit troubleshooting and repairs, rooftop unit installation, humidification systems, and more to meet each of our customer’s comfort needs.

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HVAC Testing

Comprehensive system testing identifies performance issues before they become costly problems and verifies that equipment operates at designed specifications.

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Seasonal Maintenance

Regular maintenance programs extend equipment life and prevent unexpected breakdowns during peak heating and cooling seasons when you need reliability most.

Specialty HVAC Services

Unique facilities need customized solutions. Alliance Mechanical designs and implements specialized systems for environments with specific temperature, humidity, or air quality requirements.

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HVAC Testing

Comprehensive system testing identifies performance issues before they become costly problems and verifies that equipment operates at designed specifications.

Seasonal Maintenance

Regular maintenance programs extend equipment life and prevent unexpected breakdowns during peak heating and cooling seasons when you need reliability most.

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Building Automation

Modern buildings need intelligent control systems that optimize energy usage and maintain consistent comfort levels throughout all occupied spaces.
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High-Efficiency HVAC

Our high-efficiency systems reduce operational costs while providing reliable climate control for commercial facilities of all sizes and configurations.
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HVAC Duct Services

Properly designed and installed ductwork provides optimal airflow distribution, maintaining temperature consistency and improving overall system performance throughout your building.
Black icons of tools, a speedometer, vent slats, and a fan representing equipment or HVAC maintenance.

HVAC Services

The service department provides commercial HVAC preventative maintenance, rooftop unit troubleshooting and repairs, rooftop unit installation, humidification systems, and more to meet each of our customer’s comfort needs.

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HVAC Testing

Comprehensive system testing identifies performance issues before they become costly problems and verifies that equipment operates at designed specifications.
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Seasonal Maintenance

Regular maintenance programs extend equipment life and prevent unexpected breakdowns during peak heating and cooling seasons when you need reliability most.
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Specialty HVAC Services

Unique facilities need customized solutions. Alliance Mechanical designs and implements specialized systems for environments with specific temperature, humidity, or air quality requirements.

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.

Frequently Asked Questions

  • How can commercial HVAC maintenance reduce unexpected disruptions?

    Routine maintenance helps commercial and industrial properties avoid preventable heating and cooling interruptions, especially during heavy seasonal demand. We check for performance concerns that can affect comfort, airflow, energy use, and equipment reliability. Businesses searching for HVAC contractors in Farmington Hills, MI often need maintenance that helps keep occupied spaces consistent and reduces the risk of sudden operational setbacks.

  • What signs can indicate a rooftop unit needs professional service?

    A rooftop unit may need service if indoor temperatures become inconsistent, airflow feels weaker than usual, unusual noises develop, or the system struggles to keep up during hot or cold weather. These signs can point to issues with controls, components, ventilation, or overall system performance. As an expert crew of HVAC contractors in Troy, MI, we help evaluate rooftop unit concerns before they create larger comfort or reliability problems.

  • How does ductwork affect comfort in a commercial building?

    Ductwork plays a major role in how well conditioned air moves through a facility. Poorly performing ducts can contribute to uneven temperatures, restricted airflow, energy waste, and areas that feel too warm or too cold. As exceptional HVAC contractors in Farmington Hills, MI, we know that duct design, installation, and repair can support better airflow distribution and more dependable comfort throughout the building.

  • When is HVAC testing useful for a facility?

    HVAC testing is useful when a system is not performing as expected, when comfort varies across different areas, or when facility managers want a clearer understanding of how equipment is operating. Testing can help identify performance issues that may not be obvious during daily use. Our HVAC contractors in Troy, MI and the surrounding areas use system testing to make more informed decisions about maintenance, repairs, and equipment performance.

  • How can building automation improve day-to-day comfort control?

    Building automation helps commercial spaces manage comfort more consistently by giving facilities better control over temperature and system operation. This can be especially helpful in buildings with different occupancy patterns, usage needs, or comfort zones. Turn to our HVAC contractors in Farmington Hills, MI to learn more about how automation allows for more responsive control over indoor conditions.

  • What are the benefits of HVAC zoning in larger commercial spaces?

    HVAC zoning allows different areas of a building to receive more customized temperature control. This is helpful when offices, production areas, shared spaces, or other zones have different comfort needs throughout the day. Businesses working with HVAC contractors in Troy, MI can use zoning to reduce hot and cold spots, improve occupant comfort, and limit unnecessary heating or cooling in areas that do not need the same level of conditioning.

  • Why does filtration matter in a commercial HVAC system?

    Filtration helps protect indoor air quality and supports the long-term performance of HVAC equipment. When airborne particles move through a system unchecked, they can affect both comfort and equipment condition. Businesses looking for HVAC contractors in Farmington Hills, MI often ask about filtration because cleaner airflow can help create a more comfortable indoor environment while reducing strain on key system components.

  • How can seasonal maintenance help before peak heating or cooling seasons?

    Seasonal maintenance helps prepare commercial HVAC equipment before it faces the most demanding parts of the year. Spring service can help cooling systems operate more reliably before summer, while winter maintenance can help heating systems perform when temperatures drop. For excellent seasonal maintenance services, get in touch with our HVAC contractors in Troy, MI or a nearby area.

  • What can custom sheet metal fabrication support in an HVAC system?

    Custom sheet metal fabrication can support HVAC systems when a facility needs components that fit specific layouts, equipment, or airflow requirements. Properly fabricated components can help connect system elements more effectively and support reliable performance. Businesses that need HVAC contractors in Farmington Hills, MI may benefit from custom fabrication when standard components are not the best fit for a commercial or industrial HVAC setup.

  • What signs can indicate a commercial building needs better humidity control?

    Excessively dry indoor conditions can contribute to discomfort, while inconsistent humidity levels may make certain areas of a facility feel less comfortable even when the temperature is stable. Humidification systems support more balanced indoor conditions by adding moisture when the air becomes too dry. We address these comfort concerns through commercial HVAC services for businesses seeking HVAC contractors in Farmington Hills, MI.

  • How can a high-efficiency HVAC system benefit a commercial property?

    High-efficiency HVAC equipment is designed to provide dependable climate control while reducing unnecessary energy use. For facilities with significant heating and cooling demands, improved system efficiency can support lower operational costs and more consistent performance. Businesses planning system improvements with our HVAC contractors in Troy, MI can reap the rewards of high-efficiency equipment when existing HVAC performance no longer aligns with the property's needs.

  • Why is proper ventilation important in a commercial or industrial building?

    Ventilation supports the movement of air throughout a building and plays an important role in maintaining comfortable occupied spaces. When ventilation performance is inadequate, certain areas may feel stuffy or experience uneven airflow that affects day-to-day comfort. We provide commercial ventilation solutions that support more effective air movement based on the needs of the building.

  • What should a facility expect from a commercial HVAC upgrade?

    A commercial HVAC upgrade should support more reliable comfort, better system performance, and a setup that fits the building's actual heating, cooling, and ventilation needs. Depending on the facility, that may involve high-efficiency equipment, updated controls, ductwork improvements, or rooftop unit installation. As top-tier HVAC contractors in Troy, MI and surrounding areas, we're here to implement the upgrades you need!