A water heater is an essential component in any home, but many people don’t understand how they work or what they do. This can lead to some myths and misunderstandings about water heaters. There are many common myths about water heaters, some of them that are almost entirely false. Let’s clear up some misconceptions about these essential appliances so you can make the most informed decision when purchasing yours.

Water Heater Myths: There are two taps per household.

This is absolutely false. There are many households with more than one faucet or potable water tap in a single location, but there’s only one water heater. This could be in the kitchen, bathroom or laundry room, or even outside beside the house. Each tap or faucet that is used for water should be connected to the same water heater. This is so one tap could be turned off without turning off the entire water system.Having a dedicated water heater for every single tap may seem like overkill, but it’s important to remember that each tap has a different purpose. The kitchen faucet or potable-water tap should be used for cooking and washing dishes, while the bathroom tap should be used for bathing (and flushing toilets). The laundry-room faucet should be used for washing clothes and should be shut off completely whenever the washing machine is running.

All water heaters come with a timer.

Most water heaters do come with a timer as standard equipment, but this is not a universal feature. There are many water heaters on the market with and without timers, and some with and without pilot lights. It’s important to understand what type of water heater your home needs, and which features are standard on each type.Water heaters with timers are useful for households that have a consistent water usage pattern. These households might have school kids who are home during the day, or workers who come home from work and start watering the lawn or washing cars. With a timer, these households can set the water heater to start heating the water at a specific time each day.

Hot water only comes out of the cold water spigot.

This is a common misconception, but it’s actually correct in most cases. The spigot or faucet for cold water is the one that always runs when the water is being used, but the hot water spigot doesn’t run unless the water is already hot.This means that if you turn on the cold-water faucet only, the water in the pipes will cool to the point that it enters the hot water tank. From there, it is pumped through the pipes to the hot water spigot, where it is warm enough that the water will feel hot to the touch.

A water heater is always on.

This is partially true, but only in certain areas of the country. Most water heaters in the United States have a thermostat that controls the flow of electricity to the heating element. This means that when the thermostat opens, it turns off the flow of electricity to the heating element and turns it off, while when the thermostat closes, it turns the electricity back on and heats the water tank again.Most water heaters are set to come on at the same time of day. If you want yours to come on later, you can install a programmable thermostat. This will allow you to control when your water heater comes on, and when it shuts off.

Water Heater Types

There are three basic types of water heaters, including gas, electric, and hybrid. Each type has its own strengths and weaknesses, and each should be chosen based on your specific needs.If you’re building a new home or renovating an existing one, you might want to consider an electric water heater. Electric water heaters have the lowest upfront cost out of all types, but also require the most maintenance.If your home already has an existing water heater, you might want to consider a hybrid water heater. This type of water heater is a combination of the other two, and comes with the benefits of both. Hybrid water heaters have lower upfront costs, but also have more limited maintenance.

Conclusion

A water heater is an essential appliance in any home, but many people don’t understand how they work or what they do. This can lead to some myths and misunderstandings about water heaters. There are many common myths about water heaters, some of them that are almost entirely false. Let’s clear up some misconceptions about these essential appliances so you can make the most informed decision when purchasing yours.

Frequently Asked Question

While you technically can install a hot water heater yourself as a homeowner, the likelihood that this is a good or safe idea is very slim. Trust the professionals with your hot water heater installation to make sure it's done correctly. You wouldn't want to cause yourself or your family any harm.
The higher cost is a result of a more labor-intensive set-up, as new gas and water lines are required for installation. For a new tankless water heater, new electric wiring will need to be installed.
Turn off all water supplies in the house. Turn on all the hot water faucets in the house in order to drain what is left in the existing hot water heater. Then, disconnect the water line that connects the water heater to the rest of the house. There is often a connection on a hose that you can simply unscrew.
  • Your older water heater is getting up there in age
  • It's making strange noises
  • You're getting rusty water out of the tap
  • Your hot water doesn't last as long as it used to
  • There are water puddles around the unit
120 degrees Fahrenheit is the safety recommendation against scalding, but 140° is the common default setting. Most experts agree that anything below 120 degrees creates a risk for bacteria to develop inside your water heater from stagnant water, such as legionella that causes Legionnaire's disease.
Turn up the thermostat on the hot water heater. One of the easiest ways to make a hot shower last longer is by using less hot water while it's at a higher temperature. To do this, turn up the temperature on the thermostat that's attached to the hot water heater tank. (Not the thermostat on the wall.)
Sediment buildup shortens the life of your water heater and adds to your energy bill by reducing its efficiency. Draining two or three gallons of water is usually enough to flush out sediments, but always let the water flow until you no longer see particles in the bucket. Regular water heater maintenance will always extend its lifespan.
These heaters can be fueled by electricity, gas, or liquid propane and installed in many areas of your home. The national average cost to replace a 50-gallon water heater is $1,100 to $2,800, with most people paying around $1,800 for a direct replacement of a 50-gallon gas hot water heater using the same model.
  • You're overusing hot water.
  • The water heater tank size is too small for your household.
  • Your hot water heater is tankless.
  • Sediment or minerals have built up in your water heating system.
Soft water can actually corrode the water heater anode faster. When the anode wears down, the corrosive elements will move on to the tank. So if left alone, a water softener system can actually shorten the lifespan of a water heater.