HVAC Replacement Cost in Southern California (2026)
A mid-size hvac replacement typically runs $10k–$20k at the LA County baseline. Small projects start around $5k; large or high-end work can reach $35k or more.
Pricing varies across Southern California — Orange County runs a bit above the LA baseline and San Bernardino County below. Compare by county and city below.
HVAC Replacement Cost by Size
Southern California baseline ranges (LA County = 1.0× baseline). Individual counties and cities vary — see below.
| Size | Type | Range | Low | High |
|---|---|---|---|---|
| Small | Mini-split / 1–2 zones | <1,200 sq ft | $5k | $10k |
| Medium | Central AC + furnace | 1,500–2,500 sq ft | $10k | $20k |
| Large | Dual-zone / high-efficiency | 2,500+ sq ft | $18k | $35k |
HVAC Replacement Cost by City
Los Angeles County
Orange County
San Bernardino County
What Affects HVAC Replacement Cost?
- SEER2 rating (CA minimum 15 SEER2)
- Ducted vs ductless
- Ductwork condition
- Permit
- Brand (Carrier / Lennox / Trane)
- Electrical panel upgrade if needed
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