Your name saw this post on The ActiveRain Real Estate Network and thought it might be of interest to you. Please see the link below to review the post.

Happy Carbon Monoxide Everyone! Sleep well...
This house in Omaha, NE had a 6 month old furnace and water heater.  The only 2 sources of carbon monoxide in the home.  During my home inspection, my CO detector hit 20 ppm when I was running the furnace.  I recalibrated my detector and went back into the house.  It then registered 29 ppm.  At this point, I shut off the furnace and aired the house out.  I contacted the homeowner who was a professional flipper and informed him of the carbon monoxide.
2 months go by and my client suspects something isn't right and wants me to perform a re-inspect before she closes on the home.  I return with the client and again find elevated carbon monoxide levels.  The flipper hadn't corrected the life-threatening problem.
Long story short, I spent the next hour and 15 minutes trouble shooting this.  We aired the house out multiple times, I re-calibrated my CO detector a number of times, etc.  I finally figured it out when I noticed that the hot water at the basement bathroom sink faucet wouldn't stop spurting.  I took my CO detector and placed the wand near the faucet.  That's when the CO readings climbed! 
Apparently, the 6 month old water heater ... more

__________________________________________________
Are you on The Rain? Grow Your Network!