A one-year home warranty covers repair or replacement of major home systems and appliances due to normal wear and tear, including HVAC, plumbing, electrical, and kitchen appliances. It excludes pre-existing conditions, cosmetic damage, structural issues, neglect, and natural disasters. Claims involve paying a service fee and approval based on technician reports. Coverage can be seller- or buyer-paid, with options for add-ons and varying coverage levels depending on home age and needs.