Written and maintained by CASRAI Editorial Board
Last updated
General information only, not medical advice. Product and care details come from the CDC and the U.S. Code of Federal Regulations; follow your facility’s policies and the manufacturer’s instructions for use.
Short answer
A hospital blanket is, in the ordinary sense, a textile blanket used on patient beds and handled as health-care laundry. A powered patient-warming system that regulates temperature is a different thing: US regulations classify it as a Class II device. This guide separates the two and lists the laundry facts a linen decision rests on.
Definition and scope
CDC’s environmental infection control guidelines say that laundry in a health-care facility “may include bed sheets and blankets” (CDC, Laundry and Bedding, page dated January 8, 2024). In that framing a blanket is a washable textile in the same stream as sheets, so its care is a laundry question rather than a device question.
Devices that actively warm or cool a patient are outside that category. 21 CFR 870.5900 defines a thermal regulating system as “an external system consisting of a device that is placed in contact with the patient” and “used to regulate patient temperature,” and classifies it as Class II (performance standards).
This page covers textile blankets and how they differ from regulated warming devices. It does not cover which blanket to buy, sizes, weights or flammability ratings, because the federal sources cited here state none of those.
How hospital blankets are handled in practice
All of the following comes from the CDC laundry and bedding page. It sets out how laundry in general is handled and does not give blanket-specific rules beyond naming blankets as laundry.
- Hot-water washing. “A temperature of at least 160 °F (71 °C) for a minimum of 25 minutes is commonly recommended for hot-water washing.”
- Bleach. “The use of chlorine bleach assures an extra margin of safety.” A chlorine residual of 50-150 ppm is usually achieved in the bleach cycle.
- Low-temperature cycles. Water at 71-77 °F (22-25 °C) can reduce microbial contamination, but such cycles “rely heavily” on chlorine- or oxygen-activated bleach.
- Drying. “Dryer temperatures and cycle times are dictated by the materials in the fabrics.” Drying, and especially ironing, adds further microbiocidal action.
- At the point of use. OSHA prohibits sorting or rinsing contaminated laundry where the contamination occurred, and contaminated laundry bags are to be tied or closed securely to prevent leakage.
- Clean linen. Clean linen from an off-site laundry must be packaged before transport. Short-term storage of unwrapped textiles is acceptable if they can be kept dry and free from soil and body-substance contamination.
- Hard objects. Needles, syringes and patients’ property found in laundry are sorted out to protect machinery and fabrics.
Types and related concepts
Each row below is drawn from the cited source.
| Category | What the source says | Source |
|---|---|---|
| Textile blanket (linen) | Counted among laundry that may include bed sheets and blankets; reprocessed through the laundry stream described above. | CDC, Laundry and Bedding |
| Patient thermal regulating system | External system with a device placed in contact with the patient to regulate patient temperature; Class II (performance standards). | 21 CFR 870.5900 |
The emergency foil sheet is a separate product with its own guide: see what a Mylar blanket is. For absorbent bed protection, see underpads.
Where it matters for labs, clinics and supply decisions
The CDC text turns into a short list of questions to put to whoever launders or supplies the linen. The questions are an editorial reading of the CDC page, not requirements stated by it.
- Which wash regimen applies? The CDC describes both a hot-water regimen (at least 160 °F for 25 minutes) and low-temperature cycles that depend on bleach. A blanket’s fabric has to tolerate whichever regimen the laundry uses, since drying conditions are dictated by the fabric too.
- Is the laundry on site or off site? Clean linen from an off-site laundry must arrive packaged.
- Where is clean stock held? Unwrapped textiles are acceptable in short-term storage only if kept dry and free from soil and body-substance contamination.
- How does soiled linen leave the room? It is bagged where it is used, not sorted or rinsed there, and the bag is closed to prevent leakage. Related practice appears in terminal cleaning and the bloodborne pathogens exposure control plan.
- Is the item a textile or a warming device? If it is an external device that regulates patient temperature, it falls under 21 CFR 870.5900 and the manufacturer’s instructions apply. Staff-wear reprocessing is covered separately in reusable vs disposable scrubs and coveralls.
Common misunderstandings
“Any warming blanket is just a blanket”
Not under US regulation. A system with a device that contacts the patient to regulate temperature is a Class II thermal regulating system, while an ordinary textile blanket is laundry.
“One wash temperature fits every load”
The CDC says 160 °F for 25 minutes is commonly recommended for hot-water washing, and also that low-temperature cycles can work when bleach is used. The choice has to match the fabric and the facility’s laundry process.
“A foil emergency blanket is a hospital blanket”
They are different products. The foil sheet is covered in its own guide linked above.
FAQ
What is a hospital blanket?
In the CDC’s laundry guidance, blankets sit alongside bed sheets as washable health-care laundry. Warming systems that regulate patient temperature are a separate, regulated category.
How are hospital blankets washed?
The CDC states that at least 160 °F (71 °C) for a minimum of 25 minutes is commonly recommended for hot-water washing, and that low-temperature cycles rely heavily on bleach. Dryer settings follow the fabric.
Is a heated or warming blanket a medical device?
If it is an external system with a device that contacts the patient to regulate temperature, 21 CFR 870.5900 classifies it as a Class II thermal regulating system. Check the manufacturer’s instructions for the specific product.
Sources
- CDC, G. Laundry and Bedding, Guidelines for Environmental Infection Control in Health-Care Facilities (2003); page dated January 8, 2024; checked 2026-10-30.
- 21 CFR 870.5900, Thermal regulating system (Cornell Legal Information Institute); checked 2026-10-30.
