Where should the T&P valve be installed on a water heater?

Where should the T&P valve be installed on a water heater?

• A. Cold Water Inlet
• B. Hot Water Inlet
• C. On the Discharge Pipe
• D. On the Hot Water Side within 3 Inches

Answer: (D)

The safety valve’s job is to vent water if the heater gets too hot or the pressure rises too high, preventing the tank from failing. To do this reliably, the valve must be mounted on the hot water side of the tank, as close to the top as practical. That position ensures it "sees" the actual hot water in the tank and reacts before dangerous conditions develop. Placing the valve on the cold water inlet wouldn’t reflect the hot-water conditions and could miss a dangerous surge. The discharge path should be connected to the valve and run downward to a safe location, with no shutoff in the line, so that any released water can escape freely. Installing the valve near the top on the hot side (within a short distance, commonly just a few inches) is the correct practice.

The safety valve’s job is to vent water if the heater gets too hot or the pressure rises too high, preventing the tank from failing. To do this reliably, the valve must be mounted on the hot water side of the tank, as close to the top as practical. That position ensures it "sees" the actual hot water in the tank and reacts before dangerous conditions develop. Placing the valve on the cold water inlet wouldn’t reflect the hot-water conditions and could miss a dangerous surge. The discharge path should be connected to the valve and run downward to a safe location, with no shutoff in the line, so that any released water can escape freely. Installing the valve near the top on the hot side (within a short distance, commonly just a few inches) is the correct practice.