Gas Fitter Practice Test

What could be a consequence of a cracked dip tube in a water heater?

1. Lower energy efficiency

2. Increased risk of explosion

3. Inconsistent water temperature

4. Improper ventilation

The correct answer is: Inconsistent water temperature

A cracked dip tube in a water heater can lead to inconsistent water temperature. The dip tube is responsible for delivering cold water to the bottom of the tank where it is heated. If the dip tube is cracked, cold water can mix with hot water at the top of the tank, resulting in water that is not properly heated. This can cause fluctuations in water temperature when hot water is drawn, leading to situations where users may experience short bursts of cold water mixed in with the hot water they are expecting. In contrast, while lower energy efficiency may be a concern associated with other factors, the direct and immediate consequence of a cracked dip tube is predominantly related to inconsistent heating. Increased risk of explosion and improper ventilation are not directly related to the function of the dip tube, which primarily serves to direct water flow within the tank.