Aspects such as air conditioning and washing machines need stabilizers because few have a high voltage range. However, some are marketed as a non-stabilizing operation, but in these, it is important to control the required input voltage of the device and the voltage you receive regularly at home.

A washing machine or dryer is in fact more likely to cause the first category of problems than to be damaged by it. This always leaves the problem of lightning or other external problems open. Generally, the protection of a surfer protector is mainly for sensitive electronics.

Most modern Whirlpool refrigerators are well designed to work even without the stabilizer. Fortunately the latest Whirlpool refrigerators are equipped with integrated stabilizers that can withstand voltage fluctuations between 130V and 300V.

The NEC does not specifically require the washing machine itself to have GFCI protection. Section 210.52 (F) requires the installation of a catch container for the washing space and is equipped with a 20-wide branching circuit in accordance with paragraph 210.11 (C) (2).

If the voltage remains stable, it is not necessary to install an air conditioning stabilizer (AC), but if there are frequent voltage fluctuations, it is preferable to use a stabilizer.