How To Adjust Tankless Water Heater Temperature

How to Adjust Tankless Water Heater Temperature

A tankless water heater is a great way to not only shrink your carbon footprint, but also save you money on your electric bill. A regular storage water heater (the kind with a tank) keeps a store of hot water so that it’s ready to go whenever you want it.

The tankless alternative will only heats up water on demand, which means you may have to let the water run for a little longer before you get in whilst you wait for it to heat up, but in the long run you will be using less energy. 

If you recently switched to a tankless water heater, or you’ve had one for a while but are still figuring it out, you may not feel as though you’re getting the most out of your heater.

If you need to know how to adjust the temperature, for example, then have no fear, we will go through everything that you need to know. 

What Kind Of Heater Do You Have

Before you can figure out the method to use to adjust the temperature of your heater, you first need to know what type of water heater you actually have. The first, and most common tank is a one that is designed for household use.

These tankless heaters will heat up the water that it’s holding and then immediately deliver that water to you via the faucets. 

The alternative kind of tankless water heater is called a point-of-use (POU) device which heats up the water at the last minute before it exits the sink faucets, shower head, or bathtub faucet. 

Adjusting The Temperature 

Luckily, regardless of which kind of device you have installed, adjusting the temperature is still pretty simple. 

Each tankless water heater or POU device will have some kind of LED screen where you will be able to change things around until you get your desired temperature.

I much prefer the LED screen that you get with a tankless heater that the dial that comes with most storage water heaters, as it means that you can see precisely what temperature you’re adjusting to using degrees, rather than basically having to guess with a less precise dial. 

Now, if you happen to have multiple POU devices dotted all over your house then you’ll have to go to each device and adjust it to what you need.

For example, you might have a POU that controls your washing machine and another that controls the bathtub, both of these might require a different temperature, but thankfully, you’ll have control over that. 

What Else Can You Do

You will also be able to control and adjust the vent controls that are working with your tankless water heater.

Part of the automated controls are a number of settings for the fan that will not only let you control the temperature, but also vent out potentially dangerous vapors that have accumulated if it happens to have been a while since you last used the hot water (like if you’re moving into a long-term unoccupied lot or have been on holiday). 

Tankless Water Heater Temperature

What Are The Benefits Of A Tankless Water Heater

There are quite a few benefits that you’ll find upon switching to a tankless water heating system, both for your carbon footprint and your bank account. But what do these benefits actually look like and are they worth the cost of upgrading? 


Although it might sound as though the way that a tankless water heater works would use more energy, that’s actually not true.

On average, a tankless water heater actually uses the same amount of energy to heat up water as you need it compared to keeping gallons of water hot all of the time.

Traditional water heaters lose energy because they waste it on heating water that eventually doesn’t get used and then needs to be reheated constantly. 


Because there’s no tank and less parts, tankless water heaters are actually much less likely to break down and have a much longer lifespan. The average work life of an electric unit is about 20-25 years, and they only require a small amount of maintenance.

This means that, although the initial cost is quite an investment, you’ll see that money come back to you in the form of less visits from plumbers and not needing to replace parts. 


Speaking of the financial benefits, you’ll probably feel a little worried about how much the upfront cost is, not only for the unit but for the installation as well. However, you will definitely see and feel the benefits, especially as electric prices keep rising every year. 

Space Saving Design

One of the other benefits to switching to a tankless water heater is that there is no need to install a big, ugly tank somewhere unsightly in your home – or somewhere that’s going to take up a lot of space – especially in smaller homes.

A tankless model can be placed anywhere that there’s electricity, eliminating the loss of space. You’ll even be able to install them in your home without worrying about the excess heat that a regular heater would give off. They’re also pretty easy to move if you need that space in the future. 

Bottom Line

Adjusting your tankless water heater’s temperature is as simple as pressing a couple buttons on a screen – if you’re worried about it you’ll definitely be able to ask a plumber for a demonstration upon installation. These heaters are efficient and affordable ways to help your home be more energy efficient and responsible. 

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