۳ years if installed by a certified official BIG serviceman.
https://butaneindustrial.com/wp-content/uploads/2016/04/Butane-Logo1-300x185.png00adminhttps://butaneindustrial.com/wp-content/uploads/2016/04/Butane-Logo1-300x185.pngadmin2014-07-05 11:59:562014-07-05 11:59:56How long is the warranty period, and what are the conditions?
