Keeping Your Hot Tub Cover Dry: Why It Matters and How to Do It

A hot tub cover does more than keep leaves out—it’s your spa’s first line of defense against heat loss, excess chemical use, and debris. But over time, moisture can build up inside the cover’s foam core. This trapped water can make the cover heavy, reduce insulation, and even cause mildew or odors. Learning how to remove that moisture is key to extending your cover’s life and keeping your spa in peak condition.

Why Removing Water from Your Hot Tub Cover Is Important

Restores Energy Efficiency – Waterlogged foam loses its insulating properties, meaning your spa heater works harder and costs more to run.

Prevents Mildew and Odor – A damp cover creates a perfect environment for mold and bacteria growth.

Keeps the Cover Manageable – A heavy, water-filled cover is harder to lift and can damage lifter arms.

Extends the Cover’s Life – Dry foam and clean vinyl help your cover last years longer.

How to Remove Water from Your Hot Tub Cover

Follow these steps for a safe, effective drying process:

1. Remove the Cover from the Spa

Lift the cover completely off the hot tub and place it on a clean, flat surface in a sunny area. Direct sunlight helps speed drying.

2. Unzip the Cover

Locate the zipper along the edge of the cover. Carefully unzip it to expose the foam insert inside. If the zipper sticks, use a little silicone spray—never force it, as this can tear the seam.

3. Remove the Foam Inserts

Slide the foam pieces out gently. Be careful—if the foam is waterlogged, it may be heavy and fragile.

4. Inspect for Damage

Check for cracks, sagging, or mold. If the foam is severely damaged, consider replacing it rather than just drying it.

5. Dry the Foam

Place the foam cores in direct sunlight. Position them so that air can circulate all around. For very wet foam, tilting them at an angle helps water drain out. Allow at least a full day of drying in warm weather.

6. Clean the Vinyl Cover

While the foam dries, wipe down the vinyl shell with mild soap and water. Rinse and allow it to air-dry completely before reassembly.

7. Reinsert the Foam

Once the foam is fully dry, slide it back into the vinyl cover sleeves. Ensure they’re seated evenly and zip the cover shut.

8. Return to the Spa

Place the cover back on the hot tub. You’ll notice it’s lighter, cleaner, and more effective at keeping the heat in.

Pro Tip:

Repeat this process once or twice a year, or more often if you notice your cover getting heavy or smelling musty. Regular care will save you money on heating and replacement costs.

Your hot tub is an investment in relaxation, and maintaining the cover is one of the easiest, most cost-effective ways to protect it. A dry, well-cared-for cover means lower energy bills, cleaner water, and years of extra life from both your spa and the cover itself.

If you found these tips helpful, there’s plenty more where that came from. Like and follow Live Online Spa Pros for expert hot tub care guides, troubleshooting help, and insider maintenance tips you can use year-round—straight from the pros who keep spas running at their best.

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