How often should you wash an electric blanket?

Once before first seasonal use and once at the end of the season. Spot clean as needed during use.

Can you put an electric blanket in the dryer?

Briefly on the lowest setting to remove moisture, then air dry the rest of the way. Extended dryer heat can damage wiring.

5-10 years with proper care. Replace if you notice uneven heating, hot spots, or visible wire damage.

Store rolled, not folded. Folding creates sharp bends in the wires that can cause breaks and hot spots.

Bedroom

We spend a third of our lives in bed. A clean electric blanket means better sleep and fewer allergens. Here's how to clean yours.

1
Disconnect all electrical components
Unplug and completely detach the power cord, controller, and any connectors. Never wash with these attached.
2
Pre-treat stains
Spot-treat any visible stains with a small amount of Power Wash detergent.
3
Machine wash on gentle cold
Wash on the gentlest cycle with cold water and a small amount of detergent. Keep the cycle short -- extended agitation can damage internal wires.
4
Dry on low or air dry
Tumble dry on the lowest heat setting for 10-15 minutes to remove excess moisture, then drape over a drying rack to finish air drying.

TIPMost modern electric blankets are designed to be machine washable. Check your specific model's instructions.
TIPThe brief tumble dry followed by air drying is the safest approach for the internal wiring.
TIPInspect the blanket for damage to wires or connections before each season of use.

XWashing with the controller or power cord still attached, which damages electronics and is a safety hazard.
XUsing a long or aggressive wash cycle, which bends and breaks the heating wires inside.
XDry cleaning an electric blanket, as the solvents can damage wire insulation.

Most modern ones, yes. Use gentle cold cycle, short duration. Always disconnect all electrical components first.