Question 1

How much does commercial HVAC service cost in St. Augustine?

Accepted Answer

Commercial HVAC in St. Augustine varies widely by building size. Annual maintenance contracts run $1,000-$10,000+ depending on unit count and service frequency. Rooftop unit replacement starts around $6,500-$15,000, small business systems (<5K sqft) run $8,000-$25,000, and mid-size buildings cost $25,000-$80,000 installed.

Question 2

What's the difference between commercial and residential HVAC?

Accepted Answer

Commercial systems handle larger loads (often 10-100+ tons vs. 2-5 for residential), use different equipment (rooftop units, chillers, VAV systems), and face different codes. Commercial systems also require more frequent maintenance due to higher runtime and stricter indoor air quality standards for employees.

Question 3

Do commercial HVAC contractors need special licensing in Florida?

Accepted Answer

Florida requires HVAC contractors to hold the Class A (unlimited AC/refrigeration) / Class B (limited capacity) license from the Florida Department of Business and Professional Regulation (DBPR). Most states distinguish between residential and commercial HVAC classifications, with commercial requiring additional experience or a higher-tier license. Verify your contractor holds the appropriate commercial-class credential before signing a service contract.

Question 4

How often should commercial HVAC systems be maintained?

Accepted Answer

Quarterly maintenance is the industry standard for commercial systems — four visits per year to handle filter changes, coil cleaning, refrigerant checks, and control calibration. High-usage facilities (restaurants, healthcare, data centers) may need monthly visits. Contracts typically run $500-$2,000 per rooftop unit annually.

Question 5

What size commercial HVAC system do I need?

Accepted Answer

Commercial sizing depends on square footage, occupancy, heat-generating equipment, ventilation code requirements, and climate. A Manual N commercial load calculation from a licensed contractor is essential — undersizing causes comfort issues and oversizing wastes energy and shortens equipment life.

Question 6

Can residential HVAC contractors work on commercial systems?

Accepted Answer

Only if licensed for commercial work. Commercial equipment is mechanically and electrically distinct — different refrigerants, higher voltages, larger refrigerant charges, and commercial-code requirements. Verify your contractor carries commercial-class licensing before hiring for any non-residential project.

16 Commercial HVAC Contractors in St. Augustine, FL

Top-Rated Commercial HVAC Contractors in St. Augustine

Snyder Air Conditioning, Plumbing & Electric

AC Designs Heating and Air Conditioning

Gibson's Heating and Air Conditioning LLC

All Commercial HVAC Contractors (16 total)

Powell Heating & Air Conditioning, Inc.

Action Heating and Air Conditioning,Inc.

Atlantic Mechanical AC

Glacier Heating and Air Conditioning

Taylor Refrigeration and Air Conditioning Inc.

Beitar Air Duct Cleaning

Do-All Heating and Air LLC

Temp Control Services, LLC

Climate Masters

Affordable Air Conditioning

Moore's Heating & Air LLC

St. Augustine Comfort Home AC service

HVAC CPA LLC

Commercial HVAC Costs in St. Augustine

Frequently Asked Questions

Other HVAC Services in St. Augustine, FL

Commercial HVAC in Nearby Cities

All HVAC Contractors in St. Augustine, FL

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Service	Low	Average	High
Annual maintenance (per rooftop unit) Quarterly inspections	$500	$1,000	$2,000
Annual contract (small business, < 5K sqft)	$1,000	$2,500	$5,000
Annual contract (mid-size, 5K-25K sqft)	$3,500	$6,500	$10,000
Basic rooftop unit replacement	$6,500	$10,000	$15,000
Small business full system (< 5K sqft)	$8,000	$16,000	$25,000
Mid-size building (5K-25K sqft)	$25,000	$50,000	$80,000
Operating cost (per sqft annually) Utility + maintenance	$2	$4	$6