As with anything you own, whether it's an electrical appliance, an item of clothing or a small vegetable patch in your back garden, if you look after it and give it the best care possible, it will reward you with a long life, which is hassle and problem-free.
This applies to your freezer also. There are many ways in which you can get the most out of your freezer in terms of efficiency and working life.
When buying an electrical appliance or piece of equipment, it is always recommended that you carefully read the manufacturers instructions that are supplied with your purchase, as each make is different and may vary in maintenance details