Boiler power is selected based on floor area and the building's insulation level. For an average-insulated house, you need approximately 1 kW per 10 square meters – for instance, the ALFA PLAM ELEKTRICNI KOTAO EK18 18KW suits spaces around 180 square meters. Well-insulated buildings require less power, while older houses with poor insulation may need up to 30% more capacity.
Boilers above 12 kW typically require three-phase power supply (380V), while lower-power models can run on standard single-phase mains (220V). Check what electrical installation you have at home before purchasing – retrofitting the electrical network can be expensive. Brands like ALFA and CENTROMETAL offer models for both connection types.
Electric boilers don't require a chimney, periodic cleaning or fuel storage, making them ideal for apartments and homes without gas infrastructure. They're completely silent during operation and produce no harmful emissions indoors. Installation is simpler compared to solid fuel or gas boilers.
An electric boiler can be integrated with a solar system for additional savings – using cheaper solar energy during the day while switching to grid power at night. AHT and other manufacturers offer models with tariff management that automatically utilize lower night-time electricity rates.
Initial investment in an electric boiler is lower than gas or pellet boilers, but operating costs depend on electricity prices in your region. Economic viability increases if you have a dual-tariff meter and use the night rate. Consider combining with thermal storage tanks to optimize consumption.
Without moving parts or combustion, electric boilers require minimal maintenance – mainly checking protective components and periodic inspection of heating elements. Quality models from brands like CENTROMETAL can last over 15 years with proper use. Regular monitoring of overheat protection systems extends the unit's lifespan.
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