Worst case scenario, your water heater might explode!
This could be a cause of your hot water suddenly becoming too hot.
If the pressure relief valve is blocked, pressure inside the tank will increase, in effect overheating the water. The pressure relief valve helps to release this steam and regulate the tank’s pressure. Water inside the tank is heated and steam is generated. The pressure relief valve is a very important component of a hot water system. On top of unexpectedly hot water, this will also decrease your water heater’s lifespan. It can also cause overheating and can heat your water to much higher temperatures than it is set to. This layer will mean more energy is required for water heating. These minerals eventually settle at the bottom of your water heater and form a hard layer or sediment. Water with an especially high concentration of minerals is considered hard water.Īn excessive build-up of minerals in your hot water heater could be a cause of a high water temperature. Our water contains a range of minerals which aren’t filtered out during water treatment processes.
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Regardless, a thermostat replacement is no DIY job – you will need to contact a professional plumber to make sure the job is done right. Or maybe the safety trigger is broken and your water is constantly being heated. This could be a miscalibrated thermostat, meaning the temperature it reads is consistently lower than what it actually is. If this is too high, this is what is causing your water heater to produce scalding hot water.Īlternatively, your water heater thermostat might simply be broken. The temperature it senses controls whether or not the system’s heating elements are off or on.Ĭheck your thermostat and see what temperature it is set to. The thermostat helps to regulate the temperature of your hot water heater. If you have really hot water coming from your hot water system, it’s best to start off checking this. Thermostat is set too high or is brokenīoth electric and gas water heaters have a thermostat, or a temperature setting to heat the water to. Mix in some cold water and you’re all good to have those long showers we all love. These control the temperature allowed to come out of these fixtures.Īt most you’ll have 50☌, which is safe for up to 5 minutes for both adults and young children. That’s why it’s a regulation for Australian homes to have tempering valves installed for sanitary fixtures such as your shower and bathroom tap. Setting the thermostat at 60-70☌ means you minimise this risk. When storing water in a water tank to be heated, you run the risk of bacteria growing inside. At 45☌, that time goes up to 6 hours! If 60-70☌ water is too hot and will cause burns, then why don’t we set the thermostat to 50☌?
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But did you know that 70☌ water will burn adult skin in just 1 second and a child’s skin in just 0.5 seconds according to Australian Building Codes Board?Īdults and children can enjoy 50☌ water for 5 minutes before risk of scalds. Most water heater thermostats are set somewhere between 60 and 70☌. How hot is too hot for hot water heaters? If the hot water from your water heater is too hot, it could be due to a faulty thermostat, mineral build-up, blocked pressure relief valve, your system’s heating element or even the tempering valve. Second, you have a malfunctioning water heater to worry about.Īnd finally, you can expect a big energy bill just around the corner! This is a major concern, especially if you have the young or the old using your water. “Ouch, that’s hot!” Sounds familiar? If the water from your water heater is scalding hot, you’ve got three problems on your hands.įirstly, there’s the risk of serious burns from extremely hot water from taps and fixtures in your home.
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