California rule
The rules that come with it
Any repair a tune-up leads to that needs a permit follows the 2025 Energy Code for permits applied for on or after January 1, 2026.
- Permitted follow-up work may also bring HERS testing.
- If it does, the HERS rater may be one you choose yourself.
Checked November 2026California Energy Commission, 2025 Building Energy Efficiency Standards
Checked November 2026California Energy Commission, Home Energy Rating System Program

