How to Wash a Heated Blanket Safely (2026)

Knowing how to wash a heated blanket correctly is essential for maintaining both its warming performance and your safety. While older electric blankets required dry cleaning only, most modern heated blankets are designed to be machine washable. However, improper washing can damage the internal wiring, create safety hazards, or ruin the blanket’s soft texture.

This step-by-step guide covers everything you need to know about safely cleaning your heated blanket, including machine washing, hand washing, spot cleaning, and drying methods that protect the electrical components while removing dirt, odors, and allergens.

Before You Start: Safety Checklist

Before washing your heated blanket, complete this essential safety checklist to prevent damage and ensure safe cleaning.

1. Read the care label. Every heated blanket has specific washing instructions from the manufacturer. These vary significantly between brands and models. The care label is typically sewn into a corner or along a seam. If you no longer have the label, check the manufacturer’s website for your specific model.

2. Disconnect all electrical components. Unplug the blanket from the wall outlet and completely detach the power cord and controller from the blanket. Most modern heated blankets have a detachable connector near the blanket’s edge. Never submerge electrical connectors, controllers, or power cords in water.

3. Inspect the blanket. Check the blanket thoroughly for any visible damage to the fabric, exposed wires, scorched areas, or damaged connectors. If you find any damage to the wiring or electrical components, do not wash the blanket. Replace it instead, as washing could worsen the damage and create a fire hazard.

4. Check the connector port. Ensure the connection point where the cord attaches to the blanket is clean and dry. If this area has moisture damage or corrosion, the blanket should be replaced rather than washed.

How to Machine Wash a Heated Blanket

Most modern heated blankets from brands like Sunbeam, Biddeford, and Beautyrest are machine washable. Follow these steps for safe, effective cleaning.

Step 1: Pre-Treat Stains

Apply a mild stain remover or a small amount of liquid detergent directly to any visible stains. Gently work it into the fabric with your fingers or a soft cloth. Allow the pre-treatment to sit for 10 to 15 minutes before washing. Avoid rubbing aggressively over areas where you can feel the internal wires.

Step 2: Set Up the Washing Machine

Set your washing machine to the gentle or delicate cycle with cold or lukewarm water (never hot). Use a mild, liquid laundry detergent. Avoid powder detergents, which can leave residue in the blanket’s fibers. Do not use bleach, fabric softener, or any harsh chemicals.

Step 3: Load the Blanket

Place the blanket loosely in the washing machine without wadding or stuffing it tightly. The blanket should have room to move freely during the wash cycle. Wash the heated blanket alone without other items to prevent tangling and excess agitation.

Step 4: Shortened Wash Cycle

If your machine allows it, reduce the wash time to 3 to 5 minutes of gentle agitation. Extended washing increases the risk of wire damage. Some manufacturers recommend soaking the blanket for 15 minutes in soapy water and then running only a brief gentle rinse cycle.

Step 5: Rinse Cycle

Run a complete cold-water rinse cycle to remove all detergent residue. Soap left in the blanket can irritate skin and attract dirt, reducing the time between necessary washings. A second rinse cycle ensures thorough removal of all cleaning agents.

Step 6: Spin Cycle

Use a gentle spin cycle to remove excess water. Do not wring, twist, or squeeze the blanket by hand, as this can break or dislodge the internal heating wires. Allow the machine’s spin cycle to do the work.

How to Hand Wash a Heated Blanket

Hand washing is the safest method for heated blankets, especially for older models or those without explicit machine-washable labeling.

Step 1: Fill a Bathtub or Large Basin

Fill your bathtub or a large basin with lukewarm water (approximately 85 to 90 degrees Fahrenheit). Add a small amount of mild liquid detergent and swirl to distribute evenly. Use about half the amount of detergent you would for a regular laundry load.

Step 2: Submerge and Soak

Gently lower the blanket into the soapy water, ensuring all electrical connectors are detached. Push the blanket down until fully submerged and allow it to soak for 15 to 30 minutes. The soaking time does most of the cleaning work without aggressive agitation.

Step 3: Gentle Agitation

After soaking, gently press the blanket up and down in the water to loosen dirt and odors. Avoid wringing, twisting, or rubbing the blanket aggressively. Pay special attention to edges, corners, and any stained areas, using gentle squeezing motions.

Step 4: Drain and Rinse

Drain the soapy water and refill the tub with clean, lukewarm water. Gently press the blanket to release trapped detergent. Repeat this rinse process two to three times until the water runs clear and no soap residue remains.

Step 5: Remove Excess Water

Press the blanket gently against the bottom of the tub to push out excess water. Do not wring or twist. You can roll the blanket in clean, dry towels and press to absorb additional moisture. Using absorbent towels speeds up this process significantly.

Spot Cleaning Methods

For minor stains and spills, spot cleaning avoids the need for a full wash and minimizes wear on the blanket’s internal components.

For food and beverage stains: Blot the stain immediately with a clean cloth to absorb as much liquid as possible. Mix a small amount of mild dish soap with cold water and dab the stained area with a soft cloth. Rinse by dabbing with a clean, damp cloth. Allow to air dry completely before using the blanket.

For pet stains and odors: Blot the area, then apply a solution of equal parts white vinegar and water. Let it sit for 5 minutes, then blot with a clean, damp cloth. Sprinkle baking soda over the area once partially dry and vacuum after 30 minutes to absorb remaining odors.

For general freshening: Sprinkle baking soda lightly over the entire blanket surface and let it sit for 30 minutes to one hour. Vacuum thoroughly using an upholstery attachment. This removes light odors and dust without any water exposure to the electrical components.

How to Dry a Heated Blanket

Proper drying is just as important as proper washing. Incorrect drying is one of the most common causes of heated blanket damage and malfunction.

Machine Drying (Recommended Method)

Place the blanket in the dryer on the lowest heat setting or the air-dry (no heat) cycle for 10 to 15 minutes. This brief tumble removes excess moisture and fluffs the fabric. Remove the blanket while it is still slightly damp and transition to air drying to finish.

Air Drying (Safest Method)

Drape the blanket evenly over a clothesline, drying rack, or clean shower rod. Ensure the blanket is spread out to allow maximum air circulation. Avoid folding or bunching, which traps moisture and can create mildew. Air drying typically takes 12 to 24 hours depending on humidity and air flow.

What NOT to Do When Drying

Never use high heat in a dryer, as this can melt internal wire insulation and damage the heating elements. Never iron a heated blanket. Do not use the blanket until it is completely dry, including the connector port area. Using a damp heated blanket creates a serious electrical safety hazard.

How Often Should You Wash It

Finding the right washing frequency balances hygiene with preserving the blanket’s electrical components and fabric quality.

Light use (guest room or occasional use): Wash once at the beginning and once at the end of the heating season, or approximately twice per year.

Regular use (nightly in winter): Wash once per month during the heating season, or approximately four to five times per year. Using a duvet cover over your heated blanket reduces the need for frequent washing.

Heavy use with pets or allergies: Wash every two to three weeks during active use. Consider using a removable, washable cover over the heated blanket to reduce direct contact with pet hair, dander, and allergens.

Between washes, freshen the blanket by shaking it outdoors to remove dust and loose debris. A quick spritz with a fabric refresher spray helps neutralize odors without requiring a full wash.

Brand-Specific Washing Guidelines

Major heated blanket brands have slightly different care recommendations. Here are the key differences.

Always prioritize the specific instructions that came with your blanket over general guidelines. If the care tag says hand wash only, follow that instruction regardless of what general articles suggest.

Common Mistakes That Damage Heated Blankets

Using hot water. Hot water can damage wire insulation, shrink fabrics, and weaken adhesives that secure wiring in place. Always use cold or lukewarm water, never exceeding 90 degrees Fahrenheit.

Wringing or twisting. The number one cause of heated blanket wire damage. Wringing the blanket to remove water bends and kinks the internal wires, creating hot spots and potential fire hazards. Always press gently or use the machine’s spin cycle instead.

Using fabric softener. Fabric softener coats the blanket’s fibers with a waxy residue that can insulate the heating elements and cause them to overheat. It also reduces the blanket’s breathability and softness over time. White vinegar in the rinse cycle is a safe softening alternative.

Dry cleaning. Despite older recommendations, most modern heated blankets should never be dry cleaned. The chemical solvents used in dry cleaning can damage wire insulation and create toxic fumes when the blanket is heated. Check your care label, but machine or hand washing is almost always preferred.

Storing while damp. Even slightly damp storage can cause mold, mildew, and corrosion of electrical components. Always ensure the blanket is 100 percent dry before folding and storing, especially in the area around the connector port.

Aggressive agitation. Using the regular or heavy-duty wash cycle subjects the blanket to aggressive agitation that can break wires. Always use the gentle or delicate cycle, and consider reducing the wash time if your machine allows custom settings.

Proper Storage Between Seasons

How you store your heated blanket during warmer months affects its performance and lifespan. Follow these storage best practices.

Clean before storing. Always wash and completely dry your heated blanket before putting it away for the season. Storing a dirty blanket attracts insects and allows stains to set permanently.

Fold loosely or roll. Fold the blanket loosely with the wires lying naturally. Avoid tight folding or cramming into a small space, as sharp creases can damage internal wires over time. Rolling the blanket is even better, as it eliminates fold lines entirely.

Store flat or on a shelf. Place the folded blanket on a shelf or in a breathable storage bag. Avoid stacking heavy items on top of the blanket, as pressure on the wires can cause damage. Never vacuum-seal a heated blanket, as the compression can kink wires.

Use a breathable storage bag. A cotton storage bag or clean pillowcase allows air circulation and prevents moisture buildup. Avoid plastic bags or airtight containers, which trap moisture and promote mold growth. Keeping your blanket alongside other clean linens in a dry closet is perfectly fine.

Store the controller separately. Remove the power cord and controller and store them separately in a labeled bag. This prevents tangling and protects the connector from damage. Coil the power cord loosely to avoid kinking.

Last updated: March 2026