Hello I purchaed an heil Furnace and I can go on line and registar for this extended 5yr warranty I connot find it.

Contact the dealer that sold it to you OR call Heil. They will want the professional (company name) install information ETC. and you will have to register the unit

Go here:

Supersize Warranty Special... (http://www.heil-hvac.com/)

Then click on Warranties at a Glance and scroll down a page.

You will get the extended warranty once you register