I was also curious about the warranty and e-mailed Sharp. Their reply was that it is a 1 year warranty:
If your Unit was purchased brand new, the warranty is 12 months from the date of purchase. If the product is refurbished, it will only bare a 30 day warranty on parts and labor. Please note that any cosmetic damage. This includes but is not limited to any damage caused in the shipment of the product to your home. You can find the specifics of the warranty for your Sharp Projector in the owners manual of your unit. Thank you for giving me the opportunity to assist you.
Tad N
Customer Assistance Center
Sure would be nice to know who is right before ordering.