1. Pool and Spa Filters
  2. Cal Spas

Cal Spa Filters – Best Spa and Hot Tub Filter Solutions

Cal Spa filters keep your hot tub water clean and safe through effective cartridge filtration. These filters trap debris, oils, and contaminants that affect water quality and spa system performance. Cal Spas manufactures filters in various sizes and configurations to fit their extensive hot tub lineup. At All Filters, we carry SpiroPure replacement cartridges compatible with Cal Spas specifications. Our filters match OEM dimensions and performance exactly while costing 30–50% less. Find the spa pool filter you need for your Cal Spa hot tub here.

Cross Reference Chart

SpiroPure

Unicel

Filbur

Pleatco

Cal Spas
SpiroPure SP-PS-1240

SP-PS-1240

7" x 19-5/8"

C-7656

FC-1240

PA50

50 sq. ft. filter
SpiroPure SP-PS-0195

SP-PS-0195

5-3/16" x 12-1/2"

5CH-502

FC-0195

PPM50SC-F2M

FIL11100202
SpiroPure SP-PS-0685

SP-PS-0685

10-1/16" x 16-1/8"

C-9407

FC-0685

PAP75-4

75 sq. ft. filter
SpiroPure SP-PS-2930

SP-PS-2930

4-15/16" x 23-5/8"

C-4970

FC-2930

PCAL75

75 sq. ft. top load
SpiroPure SP-PS-2971

SP-PS-2971

5-5/16" x 14-13/16"

C-5374

FC-2971

PLBS75

65 sq. ft. top load
SpiroPure SP-PS-0136

SP-PS-0136

4-5/8" x 8-1/2"

FC-0136

PDM25P4

25 sq. ft. filter
SpiroPure SP-PS-0172

SP-PS-0172

4-15/16" x 13-1/2"

4CH-949

FC-0172

PWW50L

FIL11100208

FIL50-5D13H15FCT-3

Where to Buy Cal Spa Filters and Replacement Parts

Purchase Cal Spa replacement filters directly from All Filters for convenience and savings. Our SpiroPure cartridges are engineered to match Cal Spas specifications precisely. Each product listing includes detailed dimensions and Cal Spas part number cross-references. We stock filters for most Cal Spas models. Orders ship quickly, often with free delivery on qualifying purchases. Can't identify your filter? Our customer service team can help. We'll ensure you get the correct replacement for your specific hot tub model. Shopping at All Filters means quality Cal Spas-compatible filters at 30–50% less than OEM pricing.

Benefits of Regularly Replacing Your Cal Spa Filters

Regular filter replacement maintains optimal water quality and protects your Cal Spa investment. Fresh filters provide maximum filtration efficiency, removing particles and contaminants effectively. This reduces chemical demand and keeps water clearer with less effort. Clean filters also reduce strain on your spa's circulation pump and heater. Your equipment lasts longer when water flows freely through the system. Worn, clogged filters force pumps to work harder, wasting energy and risking premature failure. Replace your Cal Spa filter every 12–18 months to maintain peak performance, depending on usage. SpiroPure compatible replacements make scheduled maintenance affordable while delivering the quality filtration Cal Spas owners expect.

FAQs on Cal Spas Filter

How do I know which Cal Spa filter replacement to buy?

Cal Spa filters and their compatible aftermarket alternatives are easily found with a model number search. At All Filters, Cal Spa model numbers can be matched on an easy cross-reference chart showing compatibility of cost -effective SpiroPure replacements with Cal Spa and other leading brands.
Cal Spa-compatible filters can improve water quality, yes! These SpiroPure brand replacements match original manufacturer specs and filtration performance, working to trap debris, oils, body lotions, and small particles,  while the large surface area of the pleated media allows proper water flow through the system.
For routine cleaning every few weeks as needed, rinse your Cal Spa-compatible filter cartridge gently with a garden hose to remove debris between the pleats. Every 2 to 4 months, soak in a dedicated solution from a pool supply store or gentle detergents to remove oils, minerals, and other buildup. Be sure filters are thoroughly rinsed.
Cal Spa filters and their compatible aftermarket models are high-performance cartridge-style filters. SpiroPure brand uses point-bonded pleated polyester with a large surface area to deliver on the performance standards of the original. Compatible with other major brands like Unicel, Filber, and Pleatco, Cal Spa-compatible filters by SpiroPure are a top choice for replacement pool and spa filters.
Cal Spa-style filter replacements are generally quick DIY tasks that take a couple of minutes to complete. It starts with turning off the pump or breaker to cut the power and release pressure. Remove the cap and then remove the old filter by turning counterclockwise. Grab a Cal-Spa compatible SpiroPure replacement and screw back into place. Replace cover and turn on pump to restore flow through the filter.

Copyright © 2026 All Filters LLC. All rights reserved.