Handling a heater that seems unsafe
An unsafe heater is both a fire hazard and a possible source of dangerous fumes, so it should be taken seriously. Warning signs include scorching or melting near the unit, a strong burning or gas smell, flames that look wrong, soot buildup, or a heater that sparks or makes unusual noises.
First, if you smell gas or suspect an active danger, stop using the heater, avoid open flames, leave if needed, and call for help — 911 or your gas company for a suspected gas leak. Do not try to repair a gas heater yourself.
The landlord is generally responsible for providing safe, working heat and maintaining the heating equipment they installed. A heater that has become a fire or fume hazard is a repair the landlord should handle promptly, using a qualified professional.
Report the problem in writing and describe what you noticed. If your rental also has a fuel-burning heater, make sure a working carbon monoxide alarm is present. If your landlord ignores an unsafe heater, a free, confidential review can explain your rights.
This is general information about California tenant rights, not legal advice. Every situation is different.