3 years if installed by a certified official BIG serviceman.
https://butaneindustrial.com/wp-content/uploads/2021/07/Butane.png00adminhttps://butaneindustrial.com/wp-content/uploads/2021/07/Butane.pngadmin2014-07-05 11:59:562014-07-05 11:59:56How long is the warranty period, and what are the conditions?
