Carbon monoxide from a propane appliance is a combustion problem, not a tank leak. Incomplete burning — a blocked vent, a dirty burner, or an unvented appliance in a tight space — can put carbon monoxide into the building. Propane is odorized so people can smell a leak; carbon monoxide has no odor. PERC (the Propane Education and Research Council) consumer safety materials treat this as an appliance and ventilation issue. United States guidance only.
Is a CO problem the same as a propane leak?
No. A tank or piping leak is propane gas. Carbon monoxide from a propane appliance is incomplete combustion at the appliance. Different file, different response.
What should the office have in writing?
The customer steps if a CO alarm sounds belong in the Policies and Procedures book, not a script someone invents at 2 a.m. See what a propane customer should do if a CO alarm sounds and Policies and Procedures.
Next step: if a customer reports fumes or a CO alarm, get them out, then call 610-228-0887 for the written procedure that belongs in your book.
Last reviewed: September 2026. Author: The Propane Safety Pro team. This page is general information for U.S. propane marketers and is not legal advice. It is not tank monitoring and it is not a medical protocol. PERC consumer safety materials are the source named on the homepage owner FAQ. Confirm current PERC consumer guidance.