![]() ![]() The result is increased pressure and temperature levels within the tank which can lead to dangerous situations like leaks, bursts, or even explosions. This can happen when the heat exchanger inside the tank becomes blocked with sediment or mineral deposits, preventing the heated water from properly releasing steam or air. The most common cause of high pressure in a hot water heater is the excessive buildup of steam or air within the tank. High pressure in a hot water heater can be caused by several factors, including: Excessive Pressure Buildup Common Causes of High Pressure In A Hot Water Heater At any given time, there will be a mix of hot and cold water inside of the tank until all of it reaches its desired temperature. As warm water is drawn from the tap, more cold water enters at the bottom of the tank and is heated up by the heating element. When heated, warmer water rises to the top of the tank while cooler water drops to the bottom, allowing for consistent temperatures throughout-this process is known as convection. ![]() A thermostat monitors the temperature of the water and signals the heating element when it needs to be turned on or off. Inside the tank is a heating element that uses the energy source (electricity, gas) to heat up the cold water in the tank until it reaches a preset temperature. The tank is typically made of steel and is insulated with either fiberglass or foam insulation to help keep the heat in. How a Hot Water Heater WorksĪ hot water heater works by using electricity, gas, or both to heat water that is stored in a tank. So what causes too much pressure in a hot water heater, and how can you avoid it? Let’s take a closer look. But if your hot water heater is under too much pressure, it can cause problems like leaks and even explosions. It provides hot water to all the fixtures and appliances connected to it. A hot water heater is an important part of your home’s plumbing system. ![]()
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