When considering floor heating for new construction or renovations, we will explain the pitfalls of the monthly electricity bill (running costs) notation that you might be concerned about!
Those who do not have much knowledge about electricity tend to rely on this information when deciding to introduce floor heating. However, because there is no unified standard for calculating running costs, it can be made to appear cheaper in various ways.
Products that claim a running cost of less than 3,000 yen per month for an 8-tatami mat type of floor heating always advertise "used for 8 hours a day at temperature setting level 1."
What is the approximate formula for running costs?
Power consumption × usage time × number of days × electricity rate × power-on rate %
Be cautious, as advertisements that prominently feature low prices often omit this power-on rate information.