According to Laundry Experts, You Should Be Washing Your Sheets at Least Once a Week

5. one part of maintaining a comfortable bedroom. Combining regular sheet washing with good ventilation, routine dusting, and a clean mattress protector can help keep your sleeping space fresher.

How Often Should You Wash Different Types of Bedding?
Not every item on your bed needs to be washed on the same schedule. Some pieces come into direct contact with your skin every night, while others are used less frequently.

Here is a practical guide for a typical household.

Bedding item Suggested washing frequency
Bed sheets Once a week
Pillowcases Once a week; more often if needed
Duvet covers Every 1–2 weeks