A practical guide for Florida homeowners navigating the HVAC permit and inspection process. Covers what work requires a permit, how to pull one, what inspectors look for, and how the process differs across Miami-Dade, Broward, and Palm Beach County.
Built by AC Repair Today — Licensed Florida HVAC Contractor, FL License CAC1824118
- What Requires an HVAC Permit in Florida?
- What Does NOT Require a Permit
- The Permit Process Step by Step
- County-Specific Requirements
- What Inspectors Look For
- Common Inspection Failures
- Costs and Timelines
- Unpermitted Work — Risks and Remediation
- Hiring a Contractor — Permit Red Flags
Florida Building Code (FBC) Section 105.1 requires a permit for any HVAC work that involves:
| Work Type | Why |
|---|---|
| Full system replacement (indoor + outdoor unit) | Change in equipment, load calculation required |
| New AC installation (new construction or addition) | New mechanical system |
| Ductwork modification (new runs, re-routing, resizing) | Affects air distribution and code compliance |
| Change of system type (conventional to heat pump, window to central) | Different electrical, refrigerant, and structural requirements |
| Relocating equipment (moving condenser, moving air handler) | Changes in electrical, drainage, clearances |
| Adding a zone (new zone damper system) | Ductwork and controls modification |
| Electrical work for HVAC (new circuit, panel upgrade for AC) | Electrical permit separate from mechanical |
| Work Type | Notes |
|---|---|
| Like-for-like replacement (same capacity, same location) | Required in most FL counties even for exact replacements |
| Mini-split installation | Requires both mechanical and electrical permits |
| Duct sealing (major repair or replacement) | Some counties require permit for extensive duct work |
| Gas furnace replacement | Requires both mechanical and gas permits |
Under Florida Building Code 105.2, the following maintenance and minor repairs are generally exempt:
- Filter replacement
- Thermostat replacement (low-voltage, no new wiring)
- Cleaning coils and condensate drains
- Capacitor and contactor replacement (component repair)
- Refrigerant recharge (must be done by EPA-certified technician)
- Fan motor replacement (like-for-like)
- Minor duct repairs (sealing leaks, replacing flex connectors)
- Condensate drain line clearing
Important caveat: "Minor repair" vs "major modification" can be subjective. When in doubt, call your county building department — a 5-minute phone call can prevent thousands in fines.
A licensed HVAC contractor handles most of this, but here's what happens:
-
Load calculation — Manual J calculation determines the correct system size for your home based on square footage, insulation, windows, orientation, and climate zone. Florida is in Climate Zone 1 (hot-humid).
-
Equipment selection — Must meet Florida's minimum efficiency standards:
- SEER2 15.0 minimum for split systems (as of Jan 1, 2023)
- SEER2 14.3 minimum for packaged units
- Must use approved refrigerant (R-410A or R-454B — R-22 systems cannot be installed)
-
Permit application — Filed online (most South Florida counties) or in person at the building department. Includes:
- Contractor's license number
- Property address and folio number
- Scope of work description
- Equipment specifications (model numbers, capacity, efficiency)
- Manual J load calculation results
- Duct design (for new installations)
- Timeline: Same day to 5 business days depending on county and complexity
- Cost: Varies by county and scope (see Costs section below)
- Online portals: Most South Florida counties have online permit systems
- Permit card must be posted at the job site during work
- Work must match the permitted scope — any changes require a revision
- Contractor must follow manufacturer installation instructions AND Florida Building Code
- Contractor calls for inspection when work is complete
- Inspector visits the property (homeowner or someone 18+ must be present in some counties)
- Inspector verifies code compliance (see What Inspectors Look For below)
- Result: Pass, Fail (with corrections needed), or Partial (some items pass, others need correction)
- Once all inspections pass, the permit is closed/finalized
- This gets recorded in the county's property records
- Critical for: home sales, insurance claims, warranty validation
- Portal: Miami-Dade iBuild (online permitting)
- Special requirements:
- High Velocity Hurricane Zone (HVHZ) — all equipment must be rated for 185 mph wind loads
- Condenser units must be secured with hurricane straps or concrete pad with tie-downs
- Product approval required for all equipment (Miami-Dade NOA — Notice of Acceptance)
- Stricter energy code compliance (must meet FBC Energy Conservation Code)
- Inspection scheduling: Online or phone, typically next-day availability
- Note: Miami-Dade has the strictest building code in Florida due to Hurricane Andrew (1992) legacy
- Portal: Broward County EZPermit (online)
- Special requirements:
- Same HVHZ requirements as Miami-Dade (185 mph wind zone)
- Requires Florida Product Approval or Miami-Dade NOA for equipment
- Energy calculations required for new installations
- Separate electrical permit for new circuits
- Inspection scheduling: Online, typically 24-48 hours
- Express permits: Available for like-for-like replacements (faster processing)
- Portal: Palm Beach County Online Permitting
- Special requirements:
- Not in HVHZ — standard Florida Building Code wind provisions (140-170 mph depending on location)
- Product approval: Florida Product Approval (not required to have Miami-Dade NOA)
- May require separate plumbing permit if condensate drain connects to plumbing system
- Inspection scheduling: Online or phone, 24-48 hours
- Note: Generally faster permit processing than Miami-Dade or Broward
Equipment Installation
- Correct equipment per permit (matching model numbers)
- Proper clearances (manufacturer-specified access clearances maintained)
- Level installation (condensing unit on level pad, air handler level)
- Condensate drain — proper slope, trap, and termination
- Secondary drain pan (required when air handler is in attic or above living space)
- Float switch on primary AND secondary drain (Florida requirement)
- Refrigerant line insulation (suction line must be insulated)
- Proper brazing/flaring of refrigerant connections
Ductwork
- Correct duct sizing per Manual D calculation
- Proper support (no sagging, strapped per code at intervals)
- Sealed connections (mastic or UL-listed tape — not standard duct tape)
- R-6 minimum insulation on all supply ducts in unconditioned spaces (FL requirement)
- Return air pathway adequacy
- No duct connections in garage (fire separation requirement)
Safety
- Disconnect switch within sight of outdoor unit
- Proper electrical connections (correct wire gauge, breaker size)
- Refrigerant leak test passed
- System operation test — heating and cooling modes functional
- Carbon monoxide provisions (gas systems)
Often a separate inspection with a separate permit:
- Correct breaker size for equipment
- Proper wire gauge for circuit length
- GFCI protection where required
- Disconnect switch properly rated and accessible
- Grounding and bonding complete
Based on common issues in South Florida HVAC installations:
Florida-specific requirement: All AC systems with an air handler above a ceiling or in an attic MUST have a float switch on both the primary and secondary condensate drain. Without it, a clogged drain can cause water damage to the ceiling below.
Fix: Install a wet switch or float switch — $20-40 part, 15 minutes to install.
Condensate drain must terminate:
- Outside the building, visible and accessible
- NOT into the sanitary sewer without an air gap (some jurisdictions allow indirect connection)
- NOT onto a walkway or area where it creates a slip hazard
- With a proper P-trap to prevent sewer gas backflow
All supply ducts in unconditioned spaces (attics, crawl spaces) must have minimum R-6 insulation in Florida. This is frequently missed on new duct connections or when existing insulation is damaged during installation.
The outdoor unit nameplate specifies minimum circuit ampacity (MCA) and maximum overcurrent protection (MOP). The installed breaker and wire must match these specifications. A common failure: installer reuses existing wiring that was sized for a smaller, older unit.
The installed system's capacity must match the Manual J load calculation on the permit. Oversized systems short-cycle and don't dehumidify properly — a serious problem in South Florida's humid climate. Undersized systems can't maintain temperature on peak summer days.
| County | Like-for-Like Replace | New Installation | Additional Ductwork |
|---|---|---|---|
| Miami-Dade | $150-250 | $250-500 | $100-200 |
| Broward | $125-200 | $200-400 | $80-150 |
| Palm Beach | $100-175 | $175-350 | $75-125 |
These are building department fees only. Your contractor may add a $50-150 administrative fee for handling the permit process.
| Step | Duration |
|---|---|
| Permit application to issuance | 1-5 days |
| Installation (typical residential) | 1-2 days |
| Inspection scheduling | 1-2 days |
| Re-inspection (if failed) | 1-3 days |
| Total (smooth process) | 4-10 days |
Unpermitted HVAC work creates real problems:
- Home sale complications: Title search reveals open or missing permits. Buyers' inspectors flag unpermitted work. Can delay or kill a sale.
- Insurance claim denial: If an unpermitted AC installation causes water damage (condensate leak), your insurance company can deny the claim.
- Warranty void: Many manufacturer warranties require permitted installation by a licensed contractor.
- Safety: Uninspected work may have code violations that create fire, electrical, or water damage risks.
- Fines: Florida counties can issue fines for unpermitted work — typically $200-500 per violation, potentially doubling the original permit cost.
- Don't panic — it's usually fixable
- Contact your county building department — ask about an "after-the-fact" permit
- Hire a licensed contractor to evaluate the existing installation
- Pull the after-the-fact permit (costs 2-4x the normal permit fee)
- Pass inspection — may require corrections to bring work up to code
- Get the permit closed — this clears the property record
After-the-fact permits are more expensive, but they're the proper way to resolve the issue. Most counties accommodate this process.
- Contractor includes permit cost in the quote as a line item
- Contractor pulls the permit before starting work (you can verify online)
- Contractor performs a Manual J load calculation
- Contractor schedules the inspection themselves
- Contractor provides the closed permit number after the job
- "We don't need a permit for this" — unless it's genuinely exempt maintenance work, this is a warning sign
- "Permits just slow things down and cost more" — true, but they also protect you
- "I'll pull the permit after" — permits must be pulled BEFORE work begins
- Contractor asks you (the homeowner) to pull the permit — in Florida, only the licensed contractor or the homeowner (for their own home) can pull a mechanical permit
- Price seems too low — cutting the permit and inspection is an easy way for unlicensed or unscrupulous contractors to undercut legitimate bids
- Florida DBPR License Search: Verify their state CAC (Class A HVAC) or CFC (Class B HVAC) license at myfloridalicense.com
- County Competency Card: Some counties require a separate local competency card in addition to the state license
- Insurance: Ask for certificate of insurance — general liability AND workers' comp
- docs/manual-j-explained.md — Understanding load calculations
- docs/florida-energy-code-hvac.md — Florida energy code requirements for HVAC
- docs/hurricane-rated-equipment.md — HVHZ product approval explained
This guide is released under the MIT License. See LICENSE for details.
Professional HVAC installation with full permitting in South Florida: AC Repair Today — Licensed CAC1824118, serving Miami-Dade, Broward, and Palm Beach County. We handle the entire permit process for every installation.