Commercial HVAC Services in Greater Jacksonville

Restaurants, retail stores, offices, churches, warehouses, and medical suites across Greater Jacksonville and Nassau County rely on Fouraker Mechanical for their rooftop units, split systems, and mini-splits. We prioritize commercial calls, carry parts for the equipment we service most, and offer maintenance contracts so breakdowns happen on our schedule, not yours. Florida mechanical contractor license CMC1250251.

What We Offer

Businesses we serve across the region

Light commercial covers a lot of ground, and the equipment and priorities differ by business type.

• Restaurants and kitchens: High heat loads, make-up air, and rooftop units that run hard. Downtime means lost covers.
• Retail and offices: Comfort drives dwell time and productivity. Split systems and rooftop units with simple controls.
• Churches and fellowship halls: Big rooms, occupancy that swings from empty to full, and tight budgets. Zoning and maintenance matter.
• Medical, dental, and veterinary suites: Tight temperature and humidity control, filtration, and no tolerance for an outage during patient hours.
• Warehouses and shops: Spot cooling, ventilation, and office areas conditioned separately from the floor.
• Rental and multi-family: Property managers who need one call for every unit and clear documentation for owners.

Equipment we service

If it conditions air for a business, we work on it.

• Packaged rooftop units (RTUs) from 2 to 25 tons
• Split systems and heat pumps
• Ductless mini-splits and multi-zone systems
• VRF and VRV systems
• Make-up air and exhaust for kitchens
• Thermostats, zoning, and building controls

Why a maintenance contract beats calling when it breaks

Commercial equipment fails on the hottest day of the year because that is when it works hardest. A contract moves the failure to a scheduled visit.

• Quarterly or semi-annual visits: Coils cleaned, belts and motors checked, refrigerant verified, drains cleared, controls tested.
• Documentation: Every visit is written up, which helps with budgeting, insurance, and landlord requirements.
• Priority response: Contract customers go to the front of the line on emergency calls.
• Replacement planning: You hear about a failing compressor a season ahead, not at 2 p.m. on a Friday in August.

How commercial service works with Fouraker

We built our commercial process around the fact that your doors have to stay open.

• One call: Report the problem and we give you an arrival window and a technician who has seen your equipment before whenever possible.
• Written pricing: Repairs are quoted in writing before work starts. Contract customers get documented pricing on every visit.
• Off-hours work: Installs and major repairs can be scheduled around business hours so customers never see a ladder.
• Code and permits: Replacements and new installs are permitted and inspected under Florida mechanical license CMC1250251.

Rooftop unit replacement: what to expect

Replacing a packaged rooftop unit is the biggest HVAC decision most small businesses make, and the process should not be a mystery.

• Evaluation: We confirm the unit is actually past repair, check the curb and electrical, and measure the space so the replacement matches without structural work.
• Load and sizing: The building, its occupancy, and its kitchen or equipment heat decide the tonnage, not the number on the old unit.
• Crane day: We schedule the crane and the swap for your closed hours or slowest day, and most single-unit replacements are running the same day.
• Startup and documentation: The new unit is commissioned, the permit is closed out, and you get the warranty paperwork and a maintenance schedule.

Financing is available for qualifying commercial projects, and a maintenance contract on the new unit protects the warranty and the investment.

Coverage area

We serve commercial customers across Greater Jacksonville, Nassau County, Baker County, and Baldwin.

That includes Northside and Westside Jacksonville, Yulee, Fernandina Beach and Amelia Island, Callahan, Hilliard, Macclenny, and the I-10 and US-1 corridors. Event venues, wedding spaces, and banquet halls have their own page because their needs are different; see event venue HVAC.