Spa Filters Explained: Understanding Types and Highlighting Sundance® Spas Filters

Maintaining clean and clear water in your spa is crucial for a healthy and enjoyable experience. One of the most critical components in achieving this is the spa filter. This article will explore the different types of spa filters available, explain how they work, and highlight why the Sundance® Spas horizontal filter is superior to others on the market.

Types of Spa Filters

1. Cartridge Filters

Description: Cartridge filters are the most common type used in spas. They consist of a pleated polyester fabric encased in a plastic frame, which traps debris and contaminants as water passes through.


  • Easy to clean and replace
  • Efficient at trapping particles of various sizes
  • Long-lasting when properly maintained


  • Require regular cleaning to maintain efficiency
  • Can be less effective if not cleaned properly

Maintenance: Clean every 2-4 weeks by rinsing with a garden hose and deep cleaning every 3-4 months using a spa filter cleaner.

2. Sand Filters

Description: Sand filters use specially graded sand as the filtering medium. Water is pumped through the sand, which traps particles as the water flows through it.


  • Low maintenance
  • Long-lasting filtering medium (typically 3-5 years before sand needs replacement)


  • Bulkier and heavier than other filter types
  • May not filter out fine particles as effectively as cartridge or DE filters

Maintenance: Backwash the filter regularly to clean the sand and replace the sand every 3-5 years.

3. Diatomaceous Earth (DE) Filters

Description: DE filters use a fine powder made from fossilized diatoms (a type of hard-shelled algae) to coat a filter grid. The powder captures even the smallest particles as water passes through.


  • Highly effective at trapping fine particles
  • Provides superior water clarity


  • More complex to maintain
  • DE powder needs to be replenished regularly

Maintenance: Backwash and replenish the DE powder every 1-3 months, and clean the filter grids as needed.

Importance of a Clean Spa Filter

A clean spa filter ensures that your spa water remains clear and free of debris. Dirty or clogged filters can lead to:

  • Reduced water flow and circulation
  • Increased strain on the pump and other components
  • Poor water quality and potential health risks

Regular cleaning and timely replacement of your spa filter are essential to maintain the performance and longevity of your spa.

strong spa filter

The Sundance® Spas Horizontal Filter

Innovative Design

Sundance® Spas is renowned for its innovative approach to spa filtration, particularly with its unique horizontal filter design. Unlike traditional vertical filters, the horizontal configuration offers several advantages:

  • Increased Filtration Area: The horizontal design allows for a larger filter surface area, which means more debris can be captured before the filter needs cleaning or replacement.
  • Improved Water Flow: With a larger surface area, water can flow more freely through the filter, reducing strain on the pump and improving overall efficiency.
  • Ease of Access: The horizontal filter is easier to access and remove, making routine cleaning and replacement simpler and more convenient.

Why Sundance® Spas Filters are Superior

  • Durable Construction: Sundance® Spas filters are made from high-quality materials designed to withstand the rigors of regular use. This durability ensures a longer lifespan and better performance.
  • Advanced Filtration Technology: The horizontal filters in Sundance® Spas hot tubs are designed to maximize filtration efficiency, ensuring that more debris is captured and the water stays cleaner for longer.
  • Enhanced Water Quality: By incorporating advanced filtration technology and a larger filter surface area, Sundance® Spas ensures superior water quality, providing a safer and more enjoyable spa experience.
  • User-Friendly Maintenance: The ease of access and removal of the horizontal filters makes routine maintenance a breeze, encouraging regular cleaning and ensuring optimal filter performance.

How to Clean and Maintain Your Sundance® Spa Filter

Step-by-Step Cleaning Process

  • Turn Off the Power: Ensure the power to your spa is turned off to prevent any accidents during the cleaning process.
  • Remove the Filter: Locate the filter compartment, usually found in the skimmer or a dedicated filter housing, and remove the filter by unscrewing or unclipping it.
  • Rinse the Filter: Use a garden hose to rinse the filter thoroughly, removing loose debris and contaminants.
  • Soak the Filter: Prepare a cleaning solution using a spa filter cleaner and soak the filter for the recommended time, usually between 1 and 8 hours. This helps break down oils, minerals, and other contaminants trapped in the filter.
  • Scrub if Necessary: For stubborn debris, use a soft brush to gently scrub the filter pleats, being careful not to damage the filter material.
  • Rinse Thoroughly: After soaking, rinse the filter thoroughly with clean water to remove all traces of the cleaning solution and any remaining debris.
  • Dry and Reinstall: Allow the filter to air dry completely before reinstalling it in the spa. This helps ensure any residual moisture is evaporated, preventing mold and mildew growth.

Regular Maintenance Tips

  • Clean Every 2-4 Weeks: Regularly rinse your filter to maintain optimal performance and water quality.
  • Deep Clean Every 3-4 Months: Soak the filter in a cleaning solution for a thorough clean.
  • Replace Every 1-2 Years: Depending on usage and maintenance practices, replace your filter to ensure continued performance and efficiency.

Why Choose Sundance® Spas Filters?

Comprehensive Warranty and Support

Sundance® Spas offers a comprehensive warranty and exceptional customer support, providing peace of mind and ensuring that any issues with your filter or spa are resolved quickly and efficiently.

Energy Efficiency

The innovative design of Sundance® Spas filters enhances water flow and reduces strain on the pump, resulting in improved energy efficiency and lower operating costs.

Superior Spa Experience

By investing in a Sundance® Spa with a horizontal filter, you can enjoy a superior spa experience with cleaner water, better performance, and easier maintenance. The combination of advanced filtration technology, durable construction, and user-friendly design makes Sundance® Spas filters the best choice for spa owners who value quality and convenience.

Spa filters are a crucial component in maintaining clean and clear water, ensuring a safe and enjoyable spa experience. Understanding the different types of spa filters available and their benefits can help you make an informed decision when choosing a filter for your spa. Sundance® Spas horizontal filters stand out due to their innovative design, superior filtration efficiency, and ease of maintenance. By choosing Sundance® Spas, you can enjoy a cleaner, more efficient, and hassle-free spa experience. Regular cleaning and timely replacement of your spa filter are essential to maintain the performance and longevity of your spa. Invest in a Sundance® Spa filter today and experience the difference in water quality and overall spa enjoyment.