By Bed Threads Bedding 13.10.2026

This Is How Often You Should Really Replace Your Linen

If you can't pinpoint when (or where) you bought your linen, we need to talk.

Here’s a brilliant brain exercise for you: try to pinpoint the exact year you bought your bed linen. Go on, have a look at those sheets currently caressing your mattress, the ones you’ve likely been sleeping on for years (and years), and think of the precise moment you purchased them.

Have no idea? It’s time we talked about how often you should be refreshing your linen. And while we’re at it, we’ll let you know how often you should be changing those bedding items you use every day, too.

Linen

Replace: Only if damaged

A poll conducted by the National Sleep Foundation in the US found that most people replace their bed linen after a couple of years, while a surprising number of people hold on to linen for decades (and decades).

Think about it – if you regularly wash your bedsheets (if you’re not, might we remind you that microbiologists have found fungi, bacteria, skin cells, and bodily secretions on sheets), then you’re putting the fibres in your linen under a lot of stress. This means that after a while they’ll be a little tatty at best and downright uncomfortable at worst, especially if they weren't great quality to start with.

If you're finding holes and stains on your sheets, seize the opportunity to add some 100% French flax linen sheets to your bedding collection. They’re sustainable, have temperature-regulating qualities (so you stay toasty in winter and breezy in summer), they’re quick-drying, and they actually feel more and more luxurious with every wash. Oh, and did we mention they’ll make your bed look Pinterest-worthy? There’s that, too. We also recommend having at least two sets to rotate between for longer-lasting wear.

In short? Because linen can last for decades, there really is no need to replace it unless there is damage.

Pillows and fitted sheet

Replace: Every 2 years

First, let’s talk about your pillows: those fluffy, comfy rectangles you rest your head on for many hours every night. To be more specific, we are referring to the pillow insert, which stays good for about two years, around which time it's worth considering replacing. This is because your poor old pillow absorbs “body oil, dead skin cells and hair”, which attracts dust mites that can trigger allergies in some people.

A 2011 study by London NHS Trust and healthcare provider Barts discovered that up to one-third of your pillow’s weight could be made up of bugs, dead skin, dust mites, and their faeces. Too much information? It’s pretty gross, we know, but if it helps you to change up your pillows, we’re glad to have enlightened you.

The same goes for your fitted sheet, which, like the pillow, faces the most wear out of all your bedding items.

Mattress

Replace: Every 8-10 years

Generally speaking, it’s a good idea to buy yourself a new mattress every eight to 10 years. Distinctly remember the lovely salesman at the mattress shop telling you your mattress came with a lifetime warranty? Here’s the thing: the warranty actually refers to the materials inside the mattress and doesn’t take into account the fact that comfort and support levels will be much, much lower 10 years down the track. We know mattress shopping is very rarely cheap, but think of it this way – your cost per use will be next to nothing in no time.

Duvet

Replace: Every 5+ years

We have good news, friends: your duvet (specifically, the duvet insert) has a much, much longer shelf life than the rest of your bedding.

You can expect your duvet insert to last over five years. This is due to the fact that your beloved, snuggly doona doesn’t have the supportive responsibilities your pillows and mattress do.

To ensure your duvet lasts for a good stint, air it regularly and wash or dry clean it (ours are machine washable, but check the tag of your item if you’re not sure which you should be doing). If even after a good wash and line-dry in the sun, it looks a little sad, lumpy or starts fraying, put it out of its misery and get acquainted with a shiny new duvet that’ll be just as cosy.

Lights

Replace: If they are affecting your sleep

Ok, so lights aren’t exactly on your bed, but they do affect the quality of sleep you’ll have in said bed, so we figured they’re worth talking about.

Light can mess with your body’s internal clock, so by switching to soothing incandescent light bulbs (or if you want to get fancy – smart bulbs that can switch to a sleep-friendly glow later on in the day) you’ll not only improve your sleep, but the whole ambience of your room.

Bright lights? Ugh. Moody, relaxing lighting? Tick. That fancy, outrageously expensive lamp you want to add to your nightstand? We just justified it for you. You’re welcome.