The most frequent mistake people make isn’t actually dangerous in terms of fire, but it is a massive waste of resources. Most households fill the kettle to the brim to boil water for just one cup of tea.
The Cost: This wastes significant electricity and time. If everyone only boiled the water they needed, we could save enough energy to power streetlights for entire cities.
The Risk: Overfilling past the “Max” line can cause boiling water to spit out of the spout or lid, leading to severe scalds or short-circuiting the base.
2. The “Limescale” Neglect
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