Repair vs. replacement timelines
When a broken furnace or heater leaves you without heat, the landlord must repair or replace it within a reasonable time — usually promptly, since heat is a basic requirement. In cold weather, that means acting fast.
A minor repair, like a part or a reset, should be handled quickly. If the heating system needs to be replaced, that can take somewhat longer to arrange, but the landlord is still expected to act without unreasonable delay and to keep you informed of the timeline.
Long, unexplained delays that leave you without heat — especially in winter — can become a habitability problem, whatever the cause. Report the issue in writing, note when it started, and follow up if you hear nothing. If your landlord will not repair a failed furnace or heater promptly, a free review can help you understand your options.
This is general information about California tenant rights, not legal advice. Every situation is different.