Some people have been surprised when their plan auto-renewed, and their credit card was suddenly charged after their 1 year plan expired. This is normal, so be prepared for this to happen.
Most home warranty companies offer a monthly pay option. If you select this option, your plan should renew automatically every year until you call and cancel.
If you elect to pay yearly, you will most likely begin receiving sales calls at the end of your term. Sales people will ask how you’ve enjoyed the warranty, and if you would like to renew for the next year. Expect these calls about 3 months before expiration.