Rinnai,Toyostove,Comfortzone and Toro are warranted through an extensive network of Servicing Dealers-we recommend you check for a service dealer in your area before making your online purchase- in the event you may have a warranty issue. Once the unit is installed and if you do have a warranty issue it must be repaired by a servicing contractor in your area. Although this rarely happens we do want to make you aware of our policy. If you want us to repair you will be responsible for shipping both ways to and from our location. This policy is standard with most heating suppliers.