What is the ideal temperature for domestic hot water?

modified: January 29, 2024

Home comfort is based on details that at first glance might seem insignificant but are actually of great importance. One of these details is the hot water temperature.

Let's find out together what the ideal domestic hot water temperature should be and how to adjust it properly for different seasons.


The function of temperature in the water heater


Domestic hot water plays an essential role in our daily lives. From morning showers to household chores, having the right temperature can make the difference between a comfortable and an unpleasant experience.

That's why understanding the function of temperature in a water heater and knowing how to adjust it is crucial.

The right temperature not only ensures ideal comfort but also helps save energy and preserve the life of the water heater. In fact, setting it too high can cause premature wear and tear and increased energy costs.


How to determine the ideal temperature


There is no perfect universal temperature for everyone, as it depends on various factors.

However, there are general guidelines that can help determine the ideal temperature for domestic hot water in the home.

In summer, when the demand for hot water tends to be lower, you can set a lower temperature than in winter. 

On the other hand, during the winter months, when the demand for hot water is higher, you may need to raise the temperature slightly to ensure that the water is sufficiently hot.


Ideal hot water temperature in summer


During the summer months, heating demands are reduced, and hot water use may vary from winter. This makes it possible to adjust the water heater temperature to optimize energy consumption.

For most homes, a domestic hot water temperature around 45-50 °C during summer is more than sufficient. This ensures the water is adequately hot for daily needs without wasting energy through overheating. It is also a safety measure that prevents scalding, especially with children in the house.


Ideal hot water temperature in winter


Winter introduces colder outdoor temperatures, which can influence the water temperature within household plumbing. As a result, the water heater may have to work harder to bring the water to the desired temperature.

During the winter months, an optimal temperature for domestic hot water is around 55-60 °C. This temperature ensures that the water is warm enough for showers and other needs, taking into account low outdoor temperatures.


Setting the water heater temperature correctly


Having understood the significance of adjusting the hot water temperature and its variation with seasons, let's explore how to set it properly.

First, it is essential to consult the manufacturer's manual to understand how to adjust the temperature. Each water heater has its own specifications, and following the manufacturer's directions ensures not only optimal use but also a longer appliance life.


Safety Considerations

Beyond comfort and energy efficiency, safety is paramount when determining the domestic hot water temperature. It is important to ensure that the temperature is not too high to avoid the risk of scalding, especially if there are children or elderly people in the house. Some of Ariston water heaters have an advanced anti-scalding feature (Temperature Lock Feature): when the set temperature is reached, the water heater immediately interrupts the heating cycle. Moreover, the innovative patented tank further reduces the risk of scalding when you turn on the shower to wash off the shampoo.

Adjusting the temperature of the water heater is a key step in ensuring ideal comfort in the home. Armed with the correct information and by adhering to the manufacturer's guidelines, you can optimize your hot water temperature and reap its many benefits.

In conclusion, the ideal hot water temperature depends on various factors such as the season, type of water heater, and personal needs. However, by following the guidelines and information provided, you will be able to find the perfect balance to ensure comfort, energy efficiency, and safety in your home.