Hot Tub Things® Filter – Compatible with Sundance® 6540-501S

Product Type: Replacement spa filter cartridge

Filtration Type: Pleated cartridge filtration

Filter Media: High-density pleated polyester filter fabric

Form: Cylindrical filter cartridge with molded end caps

Compatibility: Compatible with Sundance® filter part #6540-501S; fits select Sundance® hot tubs using this filter specification

Filtration Function: Captures dirt, debris, oils, and fine particulates to maintain water clarity and protect pumps and heaters

Installation Type: Drop-in replacement; no tools required

Core Design: Rigid internal core for structural stability and consistent water flow

Maintenance Requirements: Rinse regularly with clean water; deep clean periodically using a spa filter cleaner

Replacement Frequency: Typically every 6–12 months depending on spa usage, water chemistry, and cleaning routine

Water Flow Impact: Designed to maintain proper circulation and filtration efficiency when clean

Spa Brand Fit: Sundance® hot tubs only; not intended for non-Sundance® systems

Application Environment: Residential portable hot tubs

Storage: Store unused filters in a clean, dry place away from direct sunlight

Part Number Reference: Replaces / compatible with Sundance® 6540-501S

1. Turn off spa power and remove the cover.
2. Pull out the current outer filter cartridge.
3. Rinse the filter cavity to remove trapped debris.
4. Insert HTT-6540-501S into the filter housing.
5. Replace the cover and restore power.
6. Rinse monthly; replace annually or when worn.