1. not on all sites there is an opportunity to allocate the electric power demanded for heating of the house (for example, the house of 200 sq.m requires about 20 kW),
2. rather high cost of the electric power,
3. interruptions in power supply.
Advantages of this type of coppers:
. rather low price,
2. simplicity of installation,
3. easy and compact, they can be hung up on a wall, as a result - economy of the place,
4. safety (there is no open flame),
5. simplicity in operation,
6. do not demand the certain room (boiler room),
7. do not demand installation of a flue,
8. do not demand special leaving,
9. are silent,
10. are eco-friendly, there are no harmful emissions and foreign smells.
Shortly about the device and a complete set of electric coppers.
Electric copper - rather simple device. Its basic elements are the heat exchanger consisting of a tank with the electric heaters (Tenami) strengthened in it and the control unit and regulation. Electric coppers of some firms are delivered already completed with the circulation pulser, a programmator, a broad tank, the safety valve and the filter.
It is important to note that electric boilers of small power happen in two different executions - single-phase (220 V) and three-phase (380 V). Coppers with power more than 12 kW are usually made only by three-phase.
The vast majority of electric coppers with power more than 6 kW is issued multistage that allows to use rationally the electric power and not to include a copper at full capacity in transition periods - in the spring and in the fall.
At use of electric boilers the most actually rational use of the energy carrier. The considerable economy of the electric power can be received at installation of portable programmator which maintain temperature indoors according to the schedule which is in advance set by you.