Every year there is a seasonal shutdown of hot water, which makes you think about purchasing heating equipment. A water heater is a good alternative, there is always hot water with it, however, is it profitable or not to use it instead of central water supply?
Pros:
- High efficiency. The drive uses 1.5-3 kW per hour, not working on an ongoing basis. Good thermal insulation of the tank retains heat for a long time.
- The ability to set the heating for the dark. Very convenient at low night cost of electricity.
- Access to hot water at any time of the year, regardless of repairs and other works with central water supply.
- Outlet water without impurities, sand and rust.
Minuses:
- In the absence of electricity there is no hot water.
- The duration of the first heating.
- Limited tank capacity.
- Service. The boiler should be periodically cleaned and the magnesium anode replaced.
- Pretty expensive repairs.
The life of electric heaters depends on the price category and the correct use.
IMPORTANT!When thinking about purchasing a boiler, remember that payments for electricity will increase!
Types of Electric Heaters
By the type of heating, the devices are flowing and storage.
Advantages of instantaneous water heaters:
- Fast heating.
- Electricity is used only during the passage of fluid through the apparatus.
Equipment of this type is capable of raising the temperature by only one constant value. This is impractical in winter, when the temperature of cold water is about 7 ° C. The average power is from 5 to 12 kW.
Advantages of storage water heaters
- Water is always set temperature;
- High efficiency;
- Low power that even weak wiring can withstand.
Disadvantages:
- Long heating time;
- Large dimensions;
- The cost of electricity to save heat.
Advantages:
- No restrictions on the use of cubes.
- Payment by meter, only for used volumes.
- Troubleshooting is the responsibility of the public utility.
Disadvantages:
- Annual maintenance work.
- Long wait for troubleshooting.
- An increase in utility prices.
To compare the savings with each of the methods, calculations should be made.
At the time of writing, the following prices in Moscow:
- Hot - 188.53 rubles. for 1 m3.
- Cold - 38.06 rubles. for 1 m3.
- Electricity - 5.38 rubles. for 1 kW.
On average, a person spends 3.5 cubic meters of hot water per month. For a month of using it from the network, under the above conditions, he will pay:
3,5×188,53 =659.86 rubles.
When using a water heater, for the same 3.5 cubic meters, but at the price of a cold one, it will come out:
3,5×36,08 = 126.28 rubles.
You can pay for electricity saved means.
Taking for example a device with a tank of 50 liters with electricity consumption for heating such a volume equal to 1.52 kW per hour. A person who uses 3.5 m3 of hot water per month spends about 70 liters a day on washing dishes, taking a shower and other needs. Accordingly, the daily electricity consumption is:
70×1,52 = 106.4 kW.
With a constantly working device, to maintain the temperature, the daily consumption will additionally be 34.2 kW. According to the result: 140.6 kW per month.
Monthly fee for electricity will be released:
155,8×5,38 = 756.43 rubles.
If you heat water as necessary, and then turn off the device, then the cost of maintaining the temperature can be avoided. With this option, the cost will be 572.4 rubles per month.
IMPORTANT!Calculations suggest that the benefits of using an electric heater on a permanent basis are NOT, and when used economically, it is not significant. Acquisition and installation costs were not taken into account in the calculation.
With a constant hot water supply, the purchase of a water heater is not necessary. It is important to remember that the device costs a considerable amount, and also requires the service of the installer.
Installing a water heater is definitely worth it for convenience and constant access to hot water, and not for saving.
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