What Temperature Kills Dust Mites in Pillows?
Heat is what kills dust mites — specifically 130°F (54°C) or higher. It's the temperature that does the work, not the laundry detergent. So if you're washing pillows and bedding to fight allergies, the single most important setting is hot enough water, or a hot enough dryer. Here's exactly what that means and what to do when hot water isn't an option.
Key takeaways
Allergists at the AAFA and Mayo Clinic confirm that water or dryer heat at or above 130°F (54.4°C) kills dust mites in bedding:
- 130°F (54°C) is the threshold — wash (or dry) at or above it to kill dust mites.
- Detergent doesn't kill mites; heat does.
- Can't wash hot? A hot dryer cycle, freezing, or steam can do the job instead.
- Wash bedding weekly and pillows every few months to keep mite populations down.
Why 130°F is the magic number
Dust mites are microscopic creatures that live in bedding and feed on the dead skin we shed.
(More on what else is living in your pillow.) They themselves and their waste are common allergy and asthma triggers. Research and allergy organizations consistently point to the same figure: water at 130°F (54°C) or hotter kills them. Below that, you'll rinse some away, but many survive. The Asthma and Allergy Foundation of America recommends hot-washing bedding to control them — and notes the detergent isn't the active ingredient here, the heat is.
What if your pillow can't take hot water?
Plenty of pillows aren't rated for a 130°F wash. You still have options:
- High-heat dryer: Put the item in the dryer for at least 15 minutes above 130°F. Heat finishes off mites even if the wash was cooler.
- Freezing: For items you can't wash, seal them in a plastic bag and freeze for 24–48 hours. Cold kills mites too (though it won't remove the allergen residue, so follow with a wash if possible).
- Steam: A garment or upholstery steamer set hot (often 160–180°F) kills mites on contact without a full soak.
| Method | Target | Notes |
|---|---|---|
| Hot wash | ≥130°F (54°C) | Most effective; check the care label first |
| Hot dryer | ≥130°F, 15+ min | Good when hot washing isn't allowed |
| Freezing | 24–48 hrs | For non-washable items; doesn't remove residue |
| Steam | 160–180°F | Spot treatment, no soaking |
A note on "maximum" temperatures
Some pillows list a high "maximum tolerance" temperature, which is not the same as a recommended wash temperature. A high tolerance figure means the material won't be destroyed at that heat — it doesn't mean you should wash there. Always wash at the temperature the care label recommends, not the ceiling it can survive.
The easy route: a pillow you can actually wash hot enough
This is exactly where most pillows fall short — they can't take the heat that kills mites. The Pillowash Crisp Washable Pillow is built so all 3 layers can be deep-cleaned on a regular schedule, which is what keeps mites and allergens from building up in the first place. See how the Pillowash Crisp pillow handles deep cleaning.
For the full routine, start with our complete pillow care guide, or see the step-by-step on machine-washing a pillow.
Frequently asked questions
What temperature kills dust mites in pillows?
Water or dryer heat of 130°F (54°C) or higher kills dust mites. Below that, washing removes some but leaves many alive. The heat is what matters — detergent doesn't kill mites — so the key is reaching that temperature in the wash or the dryer.
Does washing in cold water kill dust mites?
No. Cold and warm washes rinse away some mites and allergens but don't reliably kill them. To actually kill dust mites you need 130°F (54°C) or hotter — either in a hot wash or by following a cooler wash with at least 15 minutes in a hot dryer.
How often should I wash bedding to control dust mites?
Wash pillowcases and sheets weekly in hot water, and wash pillows themselves every few months. Regular hot washing keeps mite populations from building up, which is the practical goal — you can't eliminate them entirely, but you can keep them low.
Related guide: How to get rid of dust mites in your pillows — the full step-by-step.
Related guides
For more on 130°F (54.4°C) thermal allergen care, take the 30-second Pillow Health Check, review our 176°F (80°C) deep-clean specs in the Pillowash Care FAQ, or inspect the Pillowash Crisp Washable Pillow: