In winter, I only change them 2 times a week at the beginning, and end....of each week.
Because I use cotton sheets only - I hang them up overnight in the laundry, we have a nice size laundry...and by morning they only need 10 mins in the dryer, and they are good to go!
I could never keep up with that much washing! It's bad enough having to change my preschooler's every other day when she wets the bed, let alone doing ours that often as well. I'm doing washing every day as it is! I must be easier if you don't have little ones.
About once every 6 -8 weeks, unless they've had dirty feet in them. But, we are night time showerers not, not morning showerers, and I don't make the bed in the morning. The doonas go on the floor and the sheet is open to the sunshine until about midday, when the sun has passed over.
My upbringing was that it is best to change sheets every week. My mom made it a point that all the sheets, we were eight in the family - mom, dad and four children and our grans. My granpa was one for cleanliness he did his own laundry even at the age of eighty. With all the examples set, when I started life with my husband all went well until i fell pregnant with my son.... cleaning bedsheets were totally forgotten. Every week became once in a fortnight and that became once a month after my daughter... now we are back in action. once a month has become once in fifteen days,, hopefully it comes back to once a week...
Oh dear gods! I can't imagine what kind of pigs people are who do not change their sheets once a month! We change out sheets every sunday. No excuses EVER. If i had more time I'd do it in the week as well. just so i can get into a clean bed. arrrrrrrrr!
I change mine at a minimum every week but ideally every 3-4 days. I just love the feeling of crisp all-cotton sheets so it is well worth the effort. I also live in an area that gets 300+ days of sun a year so it's easy and quick to dry the sheets on the line (I don't own a dryer so if it is raining I take the sheets to the laundry for a quick dry).
Every week, usually on a Saturday or Sunday and I air the quilts as well. I was the quilts monthly. In my next life I want to be rich and have freshly laundered and ironed sheets on my bed daily. Until that happens I will just have to do with freshly laundered and ironed weekly linen changes.
Can't stand smelly bedsheets/pillow slips! Would probably wash them 2-3 times a week. That keeps them, & me in good nick!
After a day in the Sun & Wind, they smell beautiful!
So pillowslips get starched & pressed on Elnapress. Sheets put on bed from the washing line.