Inspection 2 days ago. Turned on furnace and got CO. Called listing agent and turned off elec. and gas. Thanked me for not calling the POCO and having it red tagged.
Today, seller is saying the CO was because the propane tank was low.
Next time, will just have it red tagged and say f$$8k it, let someone else deal with it.
Co is caused by a cracked or rusted out heat exchanger. If there is CO in a home above normal conditions there is a problem. Low gas will not cause CO in a home.