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 reliable commercial HVAC services from M&R Air Conditioning. Serving St. Petersburg and the Tampa Bay area, we offer honest pricing and quality workmanship for repair, replacement, and installation.

As your trusted contractors, we guarantee innovation, sustainability, and services that ensure cost reduction in heating and ventilation. We ensure our employees have the latest training on site safety and optimized tool handling. We transform and connect your workplace with your employees and customers.

Why Commercial HVAC Maintenance is Critical for Your Business

Your commercial HVAC system works hard year-round in Florida’s climate, managing temperature and humidity. Without proper care, even quality systems lose efficiency, increase energy costs, and risk failure when you need them most.

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

Well-maintained equipment operates more efficiently, helping you reduce energy costs by 20–35% compared to neglected or outdated setups.

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. Professional service ensures your system meets current regulations.

Our Commercial HVAC Services

Sometimes repairs make sense. Other times, replacement is the smarter choice.
Here’s how to tell when it’s time for a new system:

Commercial HVAC Repair

When your system breaks down, your business can’t afford to wait. Our technicians provide fast, reliable commercial HVAC repair for rooftop units, split systems, chillers, and more. We diagnose problems accurately and fix them right the first time—minimizing disruption so you can get back to work.

Whether it’s an emergency or a scheduled repair, count on M&R for honest assessments and transparent pricing.

HVAC Replacement & Installation

Sometimes repair isn’t the most cost-effective option. If your equipment is aging, inefficient, or failing frequently, commercial HVAC replacement may be the smarter investment. We help you select energy-efficient systems properly sized for your building, ensuring optimal performance and long-term savings.

For new construction projects, we include complete system design, ductwork, and rooftop unit installation.

Our Core Commercial HVAC Solutions

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.

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. 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, and current HVAC performance. This includes assessing cooling and heating loads, humidity challenges, and any existing system issues. 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—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 deliver options that make sense for your business.

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.

STEP 04

Why Local Families Trust M&R

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, serving businesses in St. Petersburg, Pinellas, Hillsborough, and Tampa Bay. As a family-owned company, we offer honest pricing, clear communication, and trusted workmanship. Whether you need repair, replacement, or maintenance, we’ll help you find the right solution for your property.

If you're ready to ensure the quality of your environment, contact us today. Save yourself some time and worry. Schedule a maintenance date and don't wait until it becomes a problem.