Los Angeles permit
HVAC permit in Los Angeles
Same-day permit. New AC or heat pump triggers third-party HERS verification per Title 24.
Permit speed
Same day at PermitLA
Standard residential HVAC permits issue same-day. No plan check needed for typical AC / furnace / heat-pump installs.
Typical cost
$3K-$25K installed
Furnace replacement $3-8K. Central AC $8-18K. Heat-pump system $10-25K. Mini-split per zone $3-7K.
License needed
C-20 (HVAC)
C-20 specialist license required. Verify at cslb.ca.gov before signing.
HERS required
$300-600 for new AC/heat pump
Title 24 requires third-party HERS verification of refrigerant charge + duct leakage + airflow on most installs.
4 LA hvac permit gotchas
HERS verification is non-negotiable (Title 24)
Any new AC condenser or heat-pump install requires a third-party HERS rater (independent of your contractor) to test refrigerant charge, duct leakage, and airflow. Without the HERS report registered in the state database, LADBS won't finalize. Costs $300-600. Confirm your contractor has this baked into their quote, not added as a surprise.
Heat pumps qualify for stacked rebates
LADWP heat-pump rebate $1-4K + federal IRA tax credit up to $2K + SoCalGas decarbonization rebate (varies). Total stack can knock $3-7K off the install. Most homeowners don't apply because the contractor doesn't bring it up. Ask about all three before signing.
Older homes need duct retrofit
If your existing ducts are 25+ years old or in an attic that gets above 130°F, they're probably leaking 30%+ of conditioned air. New AC + old ducts = wasted capacity. Title 24 testing will catch the leakage. Budget $4-12K for duct replacement on top of equipment.
Electrical panel capacity matters for heat pumps
Heat pumps + induction range + EV charger together can exceed older 100A or 125A panel capacity. An electrician should do a load calc BEFORE the HVAC install. If a panel upgrade is needed, that's a separate $3-5K + 1-2 weeks. Cheaper to bundle the work.
Questions about hvac permit permits?
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Often paired with
These permits commonly come up alongside a hvac permit project in LA.
Electrical permit
Panel upgrade, EV charger, sub-panel — same-day permit, rough + final inspection. We connect you to a C-10 licensed electrician.
Solar permit
Most LA rooftop solar permits issue same-day via SolarAPP+. We generate the site plan + roof plan + fire setbacks — free.
Water heater swap
Tank or tankless swap needs a same-day permit. Final inspection within a week. We connect you to a licensed plumber.
Check your address first
Get the verdict + zoning + overlays + LADBS forms specific to your lot. Free, no signup.
Run feasibility check →Drawings we generate for you
Auto-drawn from your address using LARIAC orthoimagery, parcel polygons, and Microsoft Building Footprints.
- Title 24 CF1R
The permit pathway
Phase 01
Hire a licensed C-20 HVAC contractor
Air conditioning, heating, ventilation work
Common LA HVAC jobs: central AC install ($8K–$18K), furnace replacement ($3K–$8K), heat pump system ($10K–$25K with rebates), mini-split per zone ($3K–$7K), ductwork replacement ($4K–$12K).
Phase 02
Pull the mechanical permit
No plan check for standard residential HVAC
Standard residential HVAC work permits same-day via PermitLA. Plan check only needed for unusual configurations or commercial-scale work.
Phase 03
Installation + HERS verification + LADBS inspection
Title 24 HERS testing required for most installs
Installer mounts equipment, runs refrigerant lines / ductwork / electrical, charges system. A third-party HERS rater verifies refrigerant charge + duct leakage + airflow per Title 24. After HERS pass, schedule LADBS final.
LADBS application + forms
Who you'll need
Pros that pull this hvac permit
Pro categories whose specialty involves this permit type. Each links to a category page with license-class info, a request-quotes form, and (where populated) a hand-curated directory.