National Home Inspector Practice Exam

What is a common sign of exhaust spillage in a gas water heater?

1. A) Sediment buildup

2. B) Water dripping from pipes

3. C) Charred connections

4. D) Excessive condensation

The correct answer is: B) Water dripping from pipes

The presence of excessive condensation is a common sign of exhaust spillage in a gas water heater. When combustion gases are not properly vented and instead condense, it can lead to visible moisture on the exterior of the appliance or around the venting system. This moisture can create an environment conducive to corrosion and may also indicate that harmful gases could be escaping into the living space, which is a serious safety hazard. Sediment buildup primarily relates to minerals from hard water settling at the bottom of the tank, which does not directly indicate issues with gas combustion. Water dripping from pipes, while an indication of plumbing issues, does not specifically point to exhaust spillage. Charred connections typically suggest a different type of problem, such as overheating or electrical issues, rather than exhaust spillage from combustion gases. Recognizing excessive condensation as a sign of potential exhaust problems is crucial for ensuring the safe and efficient operation of gas water heaters.