They assert that LG’s linear compressors do not live up to the promised durability, despite the company’s claims of a 10-year warranty and 20-year lifespan.

"The good news is that LG refrigerators come with a five-year labor and 10-year limited warranty on the linear compressor," its spokesperson previously said.

The federal fraud lawsuit alleges that a critical part called the linear compressor, found in many LG and Kenmore refrigerators, frequently breaks down years before its advertised lifespan is up.

Last week, LG settled a class-action lawsuit alleging its refrigerators stopped cooling due to compressor-related problems. CR explains how affected consumers can file a claim.

Here's where things get a little dicey. LG's refrigerator compressors are advertised to have 20-year durability, save energy, and cool food more effectively with technologically advanced control.

"LG Inverter Linear Compressor utilises a simple design; it is also engineered with a meticulous attention to detail and a passion for quality. Fewer friction-generating parts and superior ...

LG also plans to provide the compressor to other refrigerator makers around the world. LG plans to see use of third generation linear compressors soar more than 10-fold to 50 percent by 2015. As ...