Hi PMcLean,
Welcome to the Heartland Owners Forum and hopefully to the family. We have a great bunch of people here with lots of information and all willing to share their knowledge when needed.
I know the warranty is for 1 year for sure. Some of the units starting with this year are going to a two year warranty. Also some of the components in the unit may have a longer warranty by the manufacture. I would suggest you call Heartland customer service, 877-262-8032, to clear up any questions about the warranty. As far as an extended warranty I don't think Heartland offers these, but some dealers sell them, from another source. I would not buy one myself.
Enjoy the forum.
Jim M