It is important to register the guarantee on all Apex Fire products from the date of installation/use. Simply fill out the guarantee card supplied with each product and post it to the address shown on the instructions. This will then be filed safely away in the service department in the event that you should need to call upon the guarantee at a future date. If you should any further questions relating to the guarantee, then please contact the retailer you purchased your Apex product from who will be able to deal with this for you.