In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Cause of CO poisoning unknown
It just keeps happening and know one seems to care. People getting poisoned and no one can find the problem. Wow, if you can't find the problem after someone is poisoned it is pretty doubtful you will ever prevent it from happening. The latest is from Minnesota which has the least CO trained contractors on my list. The good news is everyone is dying warm!