Commercial HVAC Services in St. Petersburg & Pinellas County

We focus on keeping your employees productive and energy costs low.

Family-Owned & Operated

Licensed & Insured

Fast Same-Day Service

Front view of a large Trane commercial rooftop unit showing manufacturer labels and access panels, part of a commercial cooling system replacement.

Expert Commercial HVAC Solutions for Your Business

Keep your business comfortable with expert commercial HVAC services from M&R Air Conditioning LLC. Serving business owners and facility managers in St. Petersburg, Pinellas County, and the Tampa Bay area, we provide commercial HVAC repair, replacement, installation, and maintenance to keep properties comfortable, energy-efficient, and code compliant across a variety of commercial applications.

Businesses trust our team because we deliver a solid commercial HVAC service offering you can count on, from rooftop unit and chiller service to split system repairs, quarterly maintenance agreements, new construction ductwork, and ongoing support. Our trained technicians assess your system, design the right solution for your building, and complete the work with honest pricing and dependable workmanship.

We focus on keeping your employees productive, your customers comfortable, and your operating costs under control.

Why Commercial HVAC Maintenance is Critical to Reduce Energy Costs for Your Business

Here’s why professional commercial HVAC service matters for your business:

System repairs

Consistent Occupant Comfort

Reliable climate control keeps employees focused and customers comfortable, directly impacting productivity and satisfaction.

uneven temperature of home

Improved Indoor Air
Quality

Clean filters, coils, and ductwork mean fresher air for everyone in your building—essential for health and productivity.

Meters

Energy Efficiency and Cost Savings

Because HVAC can account for roughly 40% of a commercial building’s total energy consumption, well-maintained equipment helps reduce costs and improve efficiency. High-efficiency HVAC units can lower monthly utilities and deliver better long-term ROI, even if upfront costs are higher.

Meter rising to uneasy level

Extended Equipment Life and Reduced Downtime

Regular maintenance prevents small issues from becoming expensive emergencies, extending the lifespan of your investment.

Enhanced Comfort

Code Compliance and Peace of Mind

Florida’s building codes require specific efficiency standards, so look for ENERGY STAR-certified replacement equipment and work with licensed HVAC contractors to help ensure compliance with local codes and safe installation and maintenance.

When you work with M&R, you’re partnering with a dedicated team that treats your business like our own.
We’ll help you keep your commercial HVAC system performing at its best, season after season.

Our Commercial Heating and Cooling HVAC Services

Whether you’re dealing with aging HVAC ducts, restricted airflow, or rising energy costs, M&R provides the professional ductwork services your home needs.

Commercial HVAC rooftop unit being lifted and installed using a crane, ensuring efficient climate control for a business building.

Rooftop Unit Replacement and Repair

Rooftop units are the workhorses of commercial cooling in St. Petersburg and across Pinellas County. Our team specializes in repairing and replacing these systems, addressing corrosion from salt air, ensuring proper anchoring for hurricane resistance, and installing modern units with variable-speed technology for better efficiency and humidity control.

Commercial HVAC rooftop units installed on a building's flat roof, providing reliable heating and cooling for a business property.

Chiller Service and Replacement

For larger commercial buildings requiring centralized cooling, we provide expert chiller service, maintenance, and replacement. Whether you have an air-cooled or water-cooled system, our technicians deliver precision work to keep your cooling reliable and efficient.

Commercial HVAC system installation for businesses in St. Petersburg, FL by Mandr Air Conditioning.

Split System Repair and Replacement

Split systems offer flexibility for multi-zone buildings and spaces where rooftop units aren’t practical. We repair and replace split systems to maintain consistent comfort throughout your commercial property. VRF systems are also a popular option for commercial applications that need zone-by-zone heating and cooling. Some projects may call for a commercial heat pump, including air source or water source models, depending on the applications involved.

HVAC system installation in a residential garage, featuring a modern air handling unit with insulated ductwork for efficient cooling.

Quarterly Maintenance Agreements

Florida’s heat, humidity, and coastal conditions demand more frequent attention. Our quarterly maintenance agreements include thorough inspections, coil cleaning, filter replacement, and drain line checks—extending equipment life, optimizing efficiency, and preventing costly breakdowns.

HVAC system installation in a residential garage, featuring a modern air handling unit with insulated ductwork for efficient cooling.

Quarterly Maintenance Agreements

Florida’s heat, humidity, and coastal conditions demand more frequent attention. Our quarterly maintenance agreements include thorough inspections, coil cleaning, filter replacement, and drain line checks—extending equipment life, optimizing efficiency, and preventing costly breakdowns.

Carrier HVAC rooftop unit with ductwork and electrical connections on a commercial flat roof in St. Petersburg, FL.

New Construction Ductwork and Rooftop Unit Installs

Building a new commercial space? We handle ductwork design and installation, rooftop unit placement, and system commissioning to ensure your HVAC performs efficiently from day one. Modular system designs can make future expansion or adjustments easier as building needs change in different commercial applications. Proper sizing and installation are critical for long-term reliability and energy savings.

Our Commercial HVAC Service Process

We’ve designed our HVAC installation process to be smooth, professional, and stress-free.
Here’s what to expect when you work with M&R:

STEP 01

Property Assessment

We start by evaluating your building’s size, layout, usage patterns, age, insulation quality, occupancy, and current HVAC performance, including spaces like restaurants with unique climate demands. This includes assessing cooling and heating loads, humidity challenges, and any existing system issues, as well as the different performance needs of properties such as schools. Understanding your property’s unique conditions ensures we recommend the right solutions.

STEP 01

STEP 02

Customized Solution Design

Based on our assessment, we work with you to design a tailored approach to meet your business needs and performance goals—whether that’s targeted repairs, a maintenance schedule, or a full system replacement. We consider your budget, energy efficiency goals, and long-term needs to recommend options that make sense for your property, including both commercial and residential settings when relevant.

STEP 02

STEP 03

Professional Installation or Repair

Our experienced technicians handle every project with care and precision. We follow best practices for installation, including proper anchoring, weatherproofing, and refrigerant charging. For repairs, we diagnose accurately and fix issues thoroughly, so you’re not calling us back for the same problem.

STEP 03

STEP 04

Ongoing Support & Maintenance

Your HVAC system needs consistent attention to perform at its best. Our maintenance agreements provide regular inspections and service, keeping your equipment efficient and reducing the risk and costs of unexpected breakdowns. We’re here whenever you need support—just a phone call away. We also provide helpful resources and practical tools to make maintenance schedules and service planning easier.

STEP 04

What Our St. Petersburg Neighbors Say

Frequently Asked Questions

Contact M&R for Your Commercial HVAC Needs

Your Comfort is Our Mission.

We ensure your commercial HVAC system runs efficiently with M&R Air Conditioning LLC, serving businesses in St. Petersburg, Pinellas, Hillsborough, and Tampa Bay. As a family-owned company, we offer honest pricing, clear communication, and trusted workmanship.

If you're ready to ensure the quality of your environment, contact us today. You can also review our service resources or case studies before scheduling. Save yourself some time and worry. Schedule a maintenance date and don't wait until it becomes a problem.