Top Mistakes People Make When Cleaning Their Hot Tub Filters
Posted by Steve Smith on June 20th, 2025
Hot tub filters are essential to keeping your spa water clean, clear, and safe to enjoy. But even the most well-intentioned hot tub owners can make simple mistakes when cleaning their filters — mistakes that could lead to cloudy water, inefficient operation, and costly repairs. Here are some of the most common missteps people make when cleaning hot tub filters and how to avoid them.
1. Not Cleaning the Filter Regularly
One of the biggest mistakes is not cleaning the filter often enough. Depending on how frequently you use your hot tub, filters should typically be rinsed every 1–2 weeks and deep cleaned every month. Letting them go too long without maintenance allows dirt, oils, and debris to build up, which restricts water flow and forces your pump to work harder — ultimately shortening the life of your equipment.
2. Using a Pressure Washer
While it might seem like a quick and powerful solution, using a pressure washer can actually damage the filter’s delicate pleats. High-pressure water can tear the fabric and reduce its ability to trap contaminants. Instead, use a garden hose with a spray nozzle to gently rinse the filter from top to bottom.
3. Skipping the Soak
A simple rinse won’t remove oils, lotions, or grease. For a deep clean, it’s important to soak your filters in a specially-formulated hot tub filter cleaner every 4–6 weeks. Soaking helps break down stubborn residues and extends the life of the filter. Always rinse thoroughly after soaking to remove any cleaning solution.
4. Using Household Cleaners
Avoid using household products like bleach, dish soap, or laundry detergent. These chemicals can cause foaming in your hot tub and irritate your skin. Only use filter cleaning products that are specifically designed for spa filters to ensure safety and effectiveness.
5. Not Letting the Filter Dry Completely
After deep cleaning, let the filter dry completely before reinstalling it. This step not only helps eliminate bacteria but also allows the filter media to rest and recover its shape. Having a backup filter is helpful, so you can rotate filters while one dries.
6. Continuing to Use Worn-Out Filters
Even with perfect cleaning habits, filters don’t last forever. Most hot tub filters should be replaced every 12 to 24 months depending on usage. If the pleats are frayed, flattened, or torn, it’s time for a new one.
Conclusion
Proper filter maintenance is crucial for the health of your hot tub and your enjoyment of it. By avoiding these common mistakes, you can extend the life of your equipment, save money on repairs, and ensure your water stays sparkling clean.
