Rooftop Unit (RTU) Service & Replacement in South Florida
Packaged rooftop units, make-up air, Intellipak and economizers - serviced, retrofit and replaced for the salt air, year-round cooling loads and hurricane codes that define commercial rooftops in Miami-Dade, Broward, Palm Beach and Monroe.
- Florida Licensed Mechanical Contractor
- Licensed • Bonded • Insured
- Mitsubishi Diamond Contractor
- Daikin VRV Certified
- Toshiba VRF Certified
- EPA Section 608 Certified
Commercial RTUs & Packaged Systems
Commercial rooftop unit (RTU) service is the repair, maintenance and replacement of the packaged heating-and-cooling units that sit on commercial roofs, and Maza HVAC delivers it across all of South Florida - Miami-Dade, Broward, Palm Beach and Monroe counties. From a single failing compressor to a multi-unit rooftop replacement, we keep buildings cool, balanced and code-compliant.
Packaged Rooftop Units
Single- and multi-zone packaged RTUs for retail, office, warehouse and mixed-use buildings - diagnostics, compressor and economizer repair, and full replacement.
Make-Up Air Units
Make-up air (MUA) units for kitchens, manufacturing and exhaust-heavy spaces - keeping buildings balanced, code-compliant and comfortable.
Intellipak & Light-Commercial Packaged Systems
Trane Intellipak and comparable light-commercial packaged platforms - controls integration, sensor and board service, and staged-capacity tuning.
Economizers
Economizer inspection, actuator and damper repair, and calibration so free cooling actually works instead of failing open or shut.
Curbs & Curb Adapters
Roof curb assessment, curb-adapter fabrication and flashing coordination so new equipment lands and seals correctly on an existing opening.
Salt Air & Hurricane Codes Change the Math
A rooftop unit in South Florida lives in one of the most demanding environments for HVAC equipment anywhere in the country. We plan and install with that reality in mind.
A 10-15 Year Replacement Cycle
Coastal salt air corrodes coils, cabinets and fasteners, pushing commercial RTUs toward a roughly 10-15 year replacement cycle - at or below the ASHRAE 15-year median service life for packaged AC units. Planning ahead beats an unplanned failure in August.
HVHZ Wind-Load Anchorage
In the High-Velocity Hurricane Zone, rooftop equipment anchorage and wind-load attachment aren't optional. We coordinate curb, fastening and structural detailing so units stay put through hurricane-force winds.
Miami-Dade NOA Product Approval
Miami-Dade Notice of Acceptance (NOA) product approval matters for rooftop equipment and its mounting. We help specify and document NOA-compliant assemblies that pass inspection the first time.
R-410A to A2L: Plan Your RTU Replacement
The refrigerant landscape just changed, and it directly affects when and how you replace a rooftop unit.
Manufacture Ended Jan 1, 2025
Manufacture and import of new R-410A equipment ended January 1, 2025 as the industry moves to lower-GWP A2L refrigerants. New rooftop platforms are being built around A2L going forward.
Sell-Through Install Until Jan 1, 2028
Packaged and light-commercial units built before the cutoff can still be INSTALLED through January 1, 2028 under the sell-through allowance. Plan replacements accordingly - we help you weigh remaining R-410A inventory against moving to A2L equipment.
Crane Logistics, Minimal Downtime
A rooftop change-out is a logistics problem as much as a mechanical one. We manage the full scope so your building keeps running and the new unit lands right the first time.
- Crane scheduling, rigging and lift planning
- Roof and curb protection plus curb-adapter fabrication
- Electrical and controls reconnection and start-up
- Sequencing built to minimize downtime for occupied spaces
Rooftop Unit Questions
How long do commercial rooftop units last in Florida?
In South Florida, coastal salt air accelerates corrosion and typically pushes commercial rooftop units toward a roughly 10-15 year replacement cycle - at or below the ASHRAE 15-year median service life for packaged air-conditioning units. Maza HVAC helps building owners across Miami-Dade, Broward, Palm Beach and Monroe plan replacements before failures force a rushed change-out.
What is the R-410A / A2L change and how does it affect RTU replacement?
Manufacture and import of new R-410A equipment ended January 1, 2025 as the industry transitions to lower-GWP A2L refrigerants. Packaged and light-commercial units built before that date can still be INSTALLED through January 1, 2028 under the sell-through allowance. That window matters for rooftop planning: owners should weigh installing remaining R-410A inventory versus moving to A2L equipment, and Maza HVAC helps map the right replacement timing for your building.
Do you handle rooftop unit change-outs and crane logistics?
Yes. Maza HVAC manages full RTU change-outs end to end - including crane scheduling and rigging, roof and curb protection, curb-adapter fabrication, and electrical and controls reconnection - sequenced to minimize downtime for occupied South Florida buildings.
Time to Plan Your Rooftop Replacement?
From a single RTU repair to a multi-unit crane change-out, Maza HVAC keeps South Florida's commercial rooftops running. Request an assessment or call our team directly for priority dispatch.