What is a Horizontal Hot Tub Filter and Why is It Important?

Hot tub maintenance is crucial for ensuring a clean, enjoyable, and long-lasting spa experience. A key component in this maintenance routine is the hot tub filter. In this article, we'll explore the concept of a horizontal hot tub filter, its significance, and why Sundance Spas® stands out as the only brand offering this innovative filtration system.

Understanding Hot Tub Filters

Hot tub filters are essential for trapping debris, dirt, and other contaminants, keeping the water clean and safe for use. They work by circulating water through a filtering medium that captures particles and prevents them from re-entering the hot tub. Regular cleaning and replacement of these filters are necessary to maintain optimal performance.

Types of Hot Tub Filters

  1. Cartridge Filters: Made from pleated polyester, these are the most common type. They are easy to clean and replace.
  2. Sand Filters: Use sand to trap particles. These are more common in pools but can be found in some hot tubs.
  3. Diatomaceous Earth (DE) Filters: Use a fine powder to capture tiny particles, offering superior filtration.

What is a Horizontal Hot Tub Filter?

A horizontal hot tub filter is designed to lie flat within the hot tub, as opposed to the traditional vertical placement. This configuration allows for a larger filtration area in the same amount of space, enhancing the filter's efficiency and longevity.

Benefits of Horizontal Filters

  1. Increased Filtration Area: The horizontal design allows for a larger filter surface, which means more debris can be trapped before the filter needs cleaning or replacement.
  2. 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.
  3. Easier Maintenance: Horizontal filters are often easier to access and remove, making routine cleaning and replacement simpler.

The Importance of Clean Filters

Regular Cleaning

Keeping your hot tub filter clean is vital for maintaining water quality and extending the life of your hot tub components. Dirty filters can lead to:

  1. Reduced Water Flow: A clogged filter restricts water circulation, putting extra strain on the pump and heating system.
  2. Poor Water Quality: If the filter cannot capture debris effectively, the water can become cloudy and contaminated.
  3. Increased Chemical Use: Dirty filters can lead to a higher demand for chemicals to maintain water balance.
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How to Clean Hot Tub Filters

  1. Rinse with Water: Regularly rinse the filter with a garden hose to remove surface debris.
  2. Soak in Filter Cleaner: Use a hot tub filter cleaner to soak the filter for deeper cleaning. Follow the manufacturer's instructions for the best results.
  3. Rinse Thoroughly: After soaking, rinse the filter thoroughly to remove any cleaning solution.
  4. Dry and Replace: Allow the filter to dry completely before reinstalling it in the hot tub.

How Often to Clean and Replace Filters

  1. Cleaning: Rinse your filter every 2-4 weeks and soak it in a cleaner every 3-4 months.
  2. Replacement: Depending on usage and maintenance, replace your filter every 1-2 years.

Sundance Spas® and Horizontal Filters

Sundance Spas® is the only brand that offers horizontal hot tub filters, providing several advantages over traditional vertical filters:

Superior Filtration

The horizontal filters in Sundance Spas® hot tubs are designed to maximize the filtration area, ensuring that more debris is captured, and water stays cleaner for longer. This design improves the overall filtration efficiency, making your hot tub experience more enjoyable and less maintenance-intensive.

Innovative Design

Sundance Spas® has incorporated advanced engineering into their horizontal filter systems to enhance water flow and reduce strain on the pump. This results in better performance and increased longevity of the hot tub components.

Easy Maintenance

The accessibility of horizontal filters in Sundance Spas® hot tubs makes them easier to remove, clean, and replace. This user-friendly design encourages regular maintenance, which is key to maintaining water quality and extending the life of the hot tub.


Investing in a hot tub with a horizontal filter system, like those offered by Sundance Spas®, provides numerous benefits, including superior filtration, improved water flow, and easier maintenance. By understanding the importance of clean filters and how to maintain them, you can ensure a clean, enjoyable, and long-lasting hot tub experience.

Keeping your hot tub filter clean is crucial for optimal performance and water quality. Regular maintenance, proper cleaning, and timely replacement of filters will help you get the most out of your hot tub. With Sundance Spas® innovative horizontal filters, you can enjoy a superior, hassle-free hot tub experience.