Commercial HVAC in Stevensville, & Bitterroot Valley, Montana

Uninterrupted Comfort Guaranteed!


M&L Heating & Cooling, Inc.’s HVAC experts are dedicated to keeping your workplace comfortable, efficient, and productive year-round. For over 30 years, we've been the trusted partner for businesses in the Stevensville, & Bitterroot Valley, Montana providing a full spectrum of HVAC solutions you can rely on.

From large-scale rooftop units and chillers to cutting-edge energy management controls and variable refrigerant flow systems, our solutions are precisely tailored to your business's requirements. The key areas of our service are installation, maintenance, repair, ductwork, upgrades, and Indoor Air Quality (IAQ) solutions. 


We understand that a broken HVAC system can be a huge inconvenience. Uncontrolled temperature combined with a lack of proper ventilation can seriously disrupt your workflow. For emergencies like this, contact us right away. 


We make sure all our installation, repair, and maintenance works comply with local building codes, safety regulations, and environmental standards. Our technicians are fully licensed and NATE-certified. 


Ask for assistance today. 

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HOURS OF OPERATION

Mon - Sun
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Service Inclusions

Here's how we become your one-stop shop for all things commercial HVAC:

Installation & Replacement

We install rooftop units, split systems, and packaged units. And if your current system is on its last legs, we replace it with a more powerful, energy-efficient unit.

Maintenance & Repair

Regular preventive maintenance from our skilled technicians helps prevent breakdowns before they happen, extending the life of your HVAC system and saving you money in the long run. However, unexpected issues can arise at any time. That's why we also offer prompt repair services. Our technicians will diagnose the problem quickly and get your system back up and running.

Installation & Replacement

We install rooftop units, split systems, and packaged units. And if your current system is on its last legs, we replace it with a more powerful, energy-efficient unit.

Indoor Air Quality (IAQ) Services

Optimize the air quality inside your workspace with state-of-the-art air filtration and purification system installation. We can also implement humidity control solutions to maintain optimal comfort levels

Emergency Repairs

If your HVAC system fails, we'll be there to address it quickly. We can even provide temporary cooling or heating solutions during extended system outages to minimize business downtime. 

Compliance and Regulations

Need assistance with required permits and inspections? Our team will obtain all the necessary permits on your behalf. 

Coun on Us to Deliver Exceptional Commercial HVAC Solutions 

HVAC services in commercial setups can be challenging due to the sheer scale and complexity of these systems. We offer cost-effective HVAC solutions to businesses of all sizes. From flawless installation to energy-efficient upgrades, reach out to us for all things HVAC. Our technicians are well-versed in commercial building codes and safety regulations. We offer flexible scheduling options and accurate estimates to make your experience with us as smooth as it can be. 


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FREQUENTLY ASKED QUESTIONS

  • What makes M&L Heating & Cooling different from other HVAC providers in the Bitterroot Valley?

    M&L Heating & Cooling stands out because of our commitment to quality, customer satisfaction, and extensive local knowledge. We focus exclusively on commercial HVAC, which means we understand the unique demands of businesses in the Stevensville and Bitterroot Valley areas. Our technicians are highly trained and stay updated with the latest technologies and codes. We’re known for our personalized service and work directly with property owners and managers to ensure HVAC systems are efficient, cost-effective, and tailored to your specific needs.

  • How often should I have my commercial HVAC system serviced?

    Regular maintenance is essential for optimal performance and longevity. We recommend having your commercial HVAC system serviced at least twice a year—once in the spring before cooling season and once in the fall before heating season. Regular servicing helps prevent breakdowns, improves energy efficiency, and ensures that your system is working properly throughout the year. M&L Heating & Cooling offers tailored service plans that help reduce long-term repair costs and downtime, keeping your business operations smooth.

  • What should I do if my HVAC system is making strange noises?

    Strange noises from your HVAC system are a common sign that something is wrong. Sounds like rattling, buzzing, or grinding may indicate loose parts, malfunctioning fans, or worn-out components. If you hear unusual sounds, it’s important to call a professional immediately to avoid further damage. M&L Heating & Cooling has the expertise to diagnose and fix the issue quickly. Addressing the problem early can help prevent costly repairs and downtime for your business.

  • How do I know if my HVAC system is energy-efficient?

    An energy-efficient HVAC system can reduce your energy bills while maintaining comfort. To assess your system’s efficiency, M&L Heating & Cooling performs a detailed evaluation that includes checking the age of your system, inspecting ductwork for leaks, and measuring airflow. If your system is over 10-15 years old or has frequent issues, it might be time for an upgrade. We offer energy audits and recommend energy-saving options like high-efficiency models, programmable thermostats, and advanced insulation.

  • How can I improve indoor air quality in my commercial building?

    Indoor air quality (IAQ) is crucial for employee productivity and health. To improve IAQ, you should ensure proper ventilation, use high-quality filters, and schedule regular duct cleaning. M&L Heating & Cooling can help you implement an air purification system or install UV lights that kill airborne bacteria and viruses. We also recommend humidity control, as both excess moisture and dryness can affect air quality. By taking these steps, you can create a healthier, more comfortable environment for your staff and customers.

  • What are the hidden benefits of having a preventative HVAC maintenance plan?

    Many business owners don’t realize the full scope of benefits a preventative HVAC maintenance plan offers. Beyond reducing the likelihood of costly breakdowns, regular maintenance ensures that your system operates at peak efficiency, which can reduce energy consumption and lower utility costs. It also extends the lifespan of your equipment, improves indoor air quality, and helps your business stay compliant with building codes. M&L Heating & Cooling provides customized maintenance plans designed to meet the needs of your business and budget.

  • What are the common misconceptions about commercial HVAC systems?

    One common misconception is that commercial HVAC systems are “set it and forget it” once they’re installed. In reality, they require ongoing attention to function efficiently. Another misconception is that all HVAC systems are the same—each commercial system has unique needs based on building size, usage, and climate. Finally, many assume that replacing an old HVAC system is always the best option, but sometimes a well-maintained system can be just as effective and cost-efficient as a new installation. M&L Heating & Cooling helps clarify these myths to ensure you make the best decision for your business.

  • How long should my commercial HVAC system last?

    The lifespan of a commercial HVAC system depends on factors like the type of system, usage, and maintenance. On average, a well-maintained HVAC system can last 15-20 years. However, the system's efficiency may start declining after 10-15 years, leading to higher energy bills and more frequent repairs. Regular maintenance from M&L Heating & Cooling can extend the lifespan of your system, but eventually, an upgrade may be necessary to maintain optimal performance. We help you evaluate the costs and benefits of repairing vs. replacing your system when the time comes.

  • What is involved in the installation of a new HVAC system?

    Installing a new commercial HVAC system involves careful planning, sizing, and design. The first step is to assess your building’s layout, usage, and heating/cooling requirements. M&L Heating & Cooling will help you choose the right system based on your needs and budget, then we’ll provide a detailed installation plan. Our team ensures that your new system is installed to meet local codes, optimize efficiency, and minimize disruptions to your business operations. After installation, we provide guidance on maintaining your system for maximum longevity.

  • What should I look for when hiring an HVAC contractor for my business?

    When hiring an HVAC contractor, look for certifications, experience in commercial HVAC, and customer reviews. Ensure they are licensed, insured, and familiar with the local building codes and regulations. M&L Heating & Cooling is a trusted name in the Bitterroot Valley for commercial HVAC, with a proven track record of reliable service. Our team is fully licensed and experienced in handling large-scale HVAC systems, and we’re committed to offering transparent pricing, high-quality workmanship, and timely project completion.

client testimonials

Timely work performed on the installation of two mini splits in our rental property. No waste of materials. Would and will be using M&L again.

SweetL.

All new heating system installed into an older house and newer addition, cut in new vents and ran all new duct work. They cleaned up behind themselves as they worked and left no trace at the end of each day. They will be returning to add an additional unit upstairs. Highly recommend.

Noah D.

Fixed my wall heater. Showed up on time and took thier tech about 5 minutes to figure out the problem and fix it. Spent the rest of his time cleaning and servicing the unit while he was there. Would recommend.

John B.

M & L put in whole house steam humidifier on our existing gas furnace. It has been working very well.

Jack T.

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Service response was very prompt, friendly and knowledgeable. Excellent service overall.

Eileen R.

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As a general contractor i appreciate Mike's attention to detail and knowledge of his craft. Ive worked with M and L Heating and cooling on 12 houses now and am extremely satisfied with his work. They are the only heating and air conditioning company Ill use.

David M.

Timely work performed on the installation of two mini splits in our rental property. No waste of materials. Would and will be using M&L again.

SweetL.

Timely work performed on the installation of two mini splits in our rental property. No waste of materials. Would and will be using M&L again.

SweetL.

All new heating system installed into an older house and newer addition, cut in new vents and ran all new duct work. They cleaned up behind themselves as they worked and left no trace at the end of each day. They will be returning to add an additional unit upstairs. Highly recommend.

Noah D.

Fixed my wall heater. Showed up on time and took thier tech about 5 minutes to figure out the problem and fix it. Spent the rest of his time cleaning and servicing the unit while he was there. Would recommend.

John B.

M & L put in whole house steam humidifier on our existing gas furnace. It has been working very well.

Jack T.

.

Service response was very prompt, friendly and knowledgeable. Excellent service overall.

Eileen R.

.

As a general contractor i appreciate Mike's attention to detail and knowledge of his craft. Ive worked with M and L Heating and cooling on 12 houses now and am extremely satisfied with his work. They are the only heating and air conditioning company Ill use.

David M.

Timely work performed on the installation of two mini splits in our rental property. No waste of materials. Would and will be using M&L again.

SweetL.

All new heating system installed into an older house and newer addition, cut in new vents and ran all new duct work. They cleaned up behind themselves as they worked and left no trace at the end of each day. They will be returning to add an additional unit upstairs. Highly recommend.

Noah D.