This is a question that is currently applied in all electrical appliances. Because the current prices are rising constantly and consumers are buying more environmentally aware - because it would be good to know whether the replacement for the old vacuum cleaner and the energy consumption is a step forward.

And this is in fact at the Roombas the case. You have to understand that almost all Roomba with a so-called. NiMH (Nickel Metal Hydride) battery (operating voltage 14.4 V) are provided. Although this NiMH battery has a high energy density, but also - albeit very small - self-discharge (at the Li-ion battery, this once small), if it is not used. To save energy and extend battery life, you should absolutely consider the following:

  • The more often you use the Roomba, the more cleaning cycles the battery is able to cope with the end.
  • If Roomba is not in use, it should always be connected to the Home Base. If you have no home base, so you connect it to the charger.

But there always is, but that one should switch off electrical devices that are not just really used! Is that also true for the Roomba?Definitely not! The life and energy efficiency of the battery is significantly improved when the standby mode is used consistently.Let's look at the power consumption of a Roomba and compare it with a conventional vacuum cleaner:

  • When loading the Roomba draws 28 watts active power for nearly 3 hours. If we only 1 time use it on the day and then again must fully charge, which results in a consumption of 0,084 KWh (kilowatt hours) per day, ie at an annual 0.084 KWh * 365 = 30.66 KWh.
  • If Roomba is fully charged and then remain in the charging station, it consumes only 3.6 watt active power. Suppose our little household helpers would take through the apartment also full 2 hours for a tour, so he would have to remain in the charging station even another 19 hours and would then 3.6 watts * 19 hours = 0.0684 KWh consume per day. extrapolated the year as a trickle charge is therefore 0.0684 KWh * 365 = 24.96 KWh.

Overall, therefore, consumes the Roomba, if we use it every day 2 hours around 55.62 KWh.

We hold the other hand the consumption of a conventional 1500 watt vacuum cleaner, we now only once a week for an hour running, it may result in 1.5 KW h * 52 = 78 KWh in, that the Roomba sucks frequently, thorough and he is on top of that energy saving!

If we have a average electricity price based managed (Stand 2014) of 28.3 cents per KWh, we obtain with respect to the power consumption and the cost of electricity following table:

Operating time in hours per week Consumption per Year Total power costs
Roomba 14 55.62 KWh 15.74 Euro
conventional vacuum cleaner 1 78 KWh 22,07 Euro
conventional vacuum cleaner 2 156 KWh 44,15 Euro
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