Carbon monoxide is a lethal gas that is also known as silent killer. It is a very serious and dangerous gas that could lead to fatal issues. It has been found that faulty ducts can have carbon monoxide leakage and the worst part is that this gas cannot be seen or smelled at any time. So you will never be able to find out if your duct is leaking this gas or not. The best and only way is to hire professionals like Marks Duct Cleaning Melbourne and get your ducts checked for any kind of leakage. We do perform carbon monoxide testing at affordable cost to ensure the safety of you and your family!