California rule
Repair or replace?
When the same part keeps failing, when the heat exchanger or the control board is gone on an older unit, or when the repair adds up close to a new system, it may be time to look at a replacement.
- A replacement in California is permitted work, and permits applied for on or after January 1, 2026, meet the 2025 Energy Code.
- Permitted work can bring state HERS testing, depending on what is done.
- If testing applies, the rater can be one you choose, independent of us.
Checked November 2026California Energy Commission, 2025 Building Energy Efficiency Standards
Checked November 2026California Energy Commission, Home Energy Rating System Program


