I installed near these FI in the line, with the I take care of the outer part of my air conditioner. As far as actually not bad. However, the case is also in stand-by operation of the air conditioning significantly warm. The function is thus of course not affected. However, one can conclude that but a few watts are "burned" to power. This is at a 24-hour continuous use (air conditioner is used for heating and cooling) connected to unnecessary energy costs. For short-term operation (mowing lawns, etc.) I would recommend this device without restriction.
