Today I came to Chris’s Bowness home to evaluate the garage heater. The garage heater was in the detached garage when Chris purchased the home 5 years ago. Recently the carbon monoxide detector in the garage started going off. Chris called Atco and they found some of the venting was leaking very low levels of co. Chris sealed the venting with foil tape but the problem persists. Upon visual inspection I can not see where the co would be escaping from. The system was clearly a diy project as the plastic intake from the attic, and csst gas tubing running through the external garage wall are not to code. Chris would like a quote to replace the system up to code and will try to seal the venting more in the mean time.