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Source: California HVAC Help (californiahvachelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.
Every fact on this site links to one of these sources. Official government sources come first. Where two official sources disagree, the page shows both.
On this site: Do I need a permit to replace an AC or furnace in California? · California energy code testing for AC changeouts · Mini-split permits in California · HVAC permit costs in California cities · HVAC work that needs no permit in California cities · Can I do my own HVAC work in California? · When does a California contractor need a license? · California home improvement contract and payment rules · How to check a California contractor and complain · Cities · FAQ · Sources
Sources
- California Energy Commission: 2025 Building Energy Efficiency Standards (checked November 2, 2026)
- California Energy Commission: Energy Code Compliance (ECC) Program (checked November 2, 2026)
- California Legislature (California Legislative Information): Business and Professions Code 7159.10 (service and repair contracts) (checked November 2, 2026)
- California Legislature (California Legislative Information): Business and Professions Code 7048 (minor work exemption) (checked November 2, 2026)
- California Legislature (California Legislative Information): Business and Professions Code 7091 (complaint time limits) (checked November 2, 2026)
- California Legislature (California Legislative Information): Assembly Bill 2622 (2024), Chapter 240: Contractors: exemptions (checked November 2, 2026)
- California Legislature (California Legislative Information): Business and Professions Code 7044 (owner-builder exemption) (checked November 2, 2026)
- California Legislature (California Legislative Information): Business and Professions Code 7028 (unlicensed contracting) (checked November 2, 2026)
- California Legislature (California Legislative Information): Business and Professions Code 7159 (home improvement contracts) (checked November 2, 2026)
- Contractors State License Board (CSLB): C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor classification (checked November 2, 2026)
- Contractors State License Board (CSLB): Check a License (checked November 2, 2026)
- Contractors State License Board (CSLB): Owner-Builder Responsibilities (checked November 2, 2026)
- Contractors State License Board (CSLB): Filing a Complaint (checked November 2, 2026)
- Contractors State License Board (CSLB): What Kind of Contractor Do I Need? (checked November 2, 2026)
- Contractors State License Board (CSLB): What Seniors Should Know (checked November 2, 2026)
- Contractors State License Board (CSLB): Owner-Builder Risks (checked November 2, 2026)
- Contractors State License Board (CSLB): Contracts and Binding Agreements (checked November 2, 2026)
- City and County of San Francisco: Apply for a plumbing and mechanical permit (checked November 2, 2026)
- City of Fresno Planning and Development: Building and Safety Services booklet (2023, PDF) (checked November 2, 2026)
- City of Long Beach Building and Safety: Express Permits (checked November 2, 2026)
- City of Long Beach Building and Safety: Online Permitting (checked November 2, 2026)
- City of Los Angeles Department of Building and Safety (LADBS): Express Permits (No Plan Check Required), P/GI 2026-003, revised 06-10-2026 (PDF) (checked November 2, 2026)
- City of Oakland Planning and Building: Mechanical, Electrical and Plumbing (MEP) Permits (checked November 2, 2026)
- City of Sacramento Community Development: Minor Permits (checked November 2, 2026)
- City of Sacramento Community Development: Average Total Cost for Common Residential Minor Permits (checked November 2, 2026)
- City of San Diego Development Services: Mechanical Permit (checked November 2, 2026)
- City of San Diego Development Services: Simple Permits (checked November 2, 2026)
- City of San Jose Development Services Permit Center: Air Conditioning, Heating and Fireplaces (updated 04/07/2026) (checked November 2, 2026)
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