It is clear that choosing the size of the water heater to take home will have to be very careful; otherwise, you will risk spending more than you should or even buying a device that is difficult to install due to space.
A water heater that is too small for your needs risks leaving you very often without hot water, perhaps in the winter months when using cold water for your hygiene needs is a real nightmare.
On the other hand, buying an exaggeratedly large water heater will expose you to a risk of consumption significantly higher than what you should.
First of all, you must basically realize how much water you actually need for your health needs, based on a simple calculation starting from the family unit that lives in our house.
Two people will tend to consume more or less eighty liters of water every day, while four people will be able to consume no less than 150 liters. As your family grows, consumption will inevitably also grow at the same pace; you can easily exceed two hundred liters without even realizing it.
Often we are not very careful in household consumption. We tend to waste a lot of water without absolutely noticing it. This is bad because it can aggravate both our bill and the environment, so I invite everyone to the more prudent use of water, both hot and cold.
After having accurately calculated our consumption, it will therefore be necessary to take into account how these are distributed throughout the day, in fact, it is clear and obvious that in some hours of the day there will be much more intense consumption while in others it will be lower or even zero.
There are homes where members will all tend to use hot water within a very limited time slot, for example, before going to work in the early morning.
If you recognize yourself in this case, you will have to think about adopting a larger tank since the water will run the risk of being consumed before the last person can use it in that specific period. Furthermore, it must be borne in mind that using the bathtub instead of the shower involves using an enormously greater quantity of water; in this case, the consumption will also have to be multiplied by 4.
The actual size of the boiler used by our electric water heater will also be very important; it will depend on whether or not it can be installed in the room we have chosen.
Some are very small and can even be placed under the sink, but these models are only recommended for those with extremely low hot water needs.
Another solution in case there is a need for a lot of water but space does not allow it is the instantaneous water heater.
The larger an electric water heater is, the greater its consumption will be. This seems obvious, but from personal experience, it is not a clear thing to many, so be careful when making the actual purchase.
Even water heaters work by exploiting significantly reduced energy consumption, using a heat pump that helps keep costs very low, saving up to about sixty percent.
A trick used by many is to place the water heater very close to the sanitary fixtures that they intend to use the most; for example, it is an excellent idea to keep it very close to the shower and bathtub, it is clear that it is much more likely that we will need a greater quantity of hot water when we are going to take a bath or shower, rather than when we are going to use a sink. In this way, we will avoid the dispersion of heat.
For the same reason, it is good practice not to install the water heater next to very cold surfaces, for example, walls that give to the outside, or even worse next to windows, in this way you would risk making all the wasteful water heating process in vain.
Some opt for the installation of two water heaters in the house, placing a second in their kitchen to have hot water when using the sink without the need to go and get it from the bathroom.
There is also very insulating thermal paper to further avoid any type of heat dispersion and thus reduce costs to the bone.
It will also be good to memorize the operation of our thermostat in order to adjust it harmoniously according to our needs. In fact, it is not mandatory to always keep it at maximum, risking very high consumption; it can be kept at a more limited temperature that still guarantees a sufficient supply of hot water in relation to the temperature of the surrounding environment.
In winter, it will necessarily be necessary to keep it higher, while it will be possible to significantly reduce this parameter in summer.
Be very careful because too hot water could also make you run the risk of dangerous burns while taking a shower!
There are very convenient flow reducers that can be positioned both on the taps of the sinks of the house and inside the shower; using them, you can reduce the use of hot water and amortize the general consumption of water, thus going to burden the environment less.