What is the MagnaWave Warranty? Play Video What is the MagnaWave Warranty? MagnaWave CEO Pat Ziemer answers the frequently asked question "What is the MagnaWave PEMF Warranty?" All of our devices come with a three year initial warranty. We also offer an extended seven year warranty. The maximum out of pocket expense is $700. We want to provide you with the best support so you can keep using PEMF whenever you start to experience aches and pains! Share