Good afternoon. You probably know. that American Home Shield offers three home warranty plans covering essential appliances, systems, or a combination of both. American Home Shield’s standard warranty is 12 months. If you have one American Home Shield plan, you can get a discount when you buy coverage for another property. Customers also receive discounts on the purchase of new air filters and household appliances. The total monthly cost of american home shield will vary depending on which plan and call charges you choose.