Cannot express my gratitude and thanks enough for the discovery of a potentially lethal situation when Jon Z. checked my oven's CO readings as part of his inspection. I am glad that I called Homer 9 when my CO detector went off, but Jon went above and beyond to identify the true source of the problem, and quite literally may have saved our lives by identifying and explaining in detail the severity of the issue. Thank you for your outstanding service, and for going the extra mile. Thank you, Jon, for being so thorough and for preventing a very serious situation. We are so grateful.