Alpine A20 Spa Filter | CD20 BBF4AA04 | 265mm x 125mm Replacement
Compatible with selected Alpine Spas models available in New Zealand using the A20 / CD20 / BBF4AA04 filter format, including:
Alaska, Alberta, Arctic, Aspen, Barbados Eco, Belmont, Calgary, Colorado, Cub, Duo, Eden, Edmonton, Frontier, Fuji, Glacier, Kingston, Malibu Eco, Montreal, Nepal, Nevada, Nordic, Nova, Oasis, Ohio, Oregon, PureSpas Fiesta4, PureSpas Grand6, PureSpas Lux3, PureSpas Revive5, PureSpas Retreat6, PureSpas Splash6, Tibet, Toronto, Utah and Yukon.
Also cross-referenced by some sellers as a replacement for the Alpine Spas Platinum Microban Single Filter.
Important: Always confirm fitment by matching your existing filter's physical dimensions before ordering. This filter suits the A20 / CD20 format: 265mm length, 125mm diameter, 54mm centre hole at both ends (open, not threaded). Not sure? Email a photo of your old filter and spa model to perfectpoolsnz@gmail.com and we'll confirm before you order. You can also visit our contact page. Cross-Reference Codes
This filter is sold under several equivalent part numbers. If your existing filter shows any of the following codes, this is the correct replacement:
- Alpine A20
- Alpine Spas 20
- CD20
- BBF4AA04 Key Features
- Correct Fit. A20 / CD20 format, 265mm length, 125mm diameter, 54mm centre hole at both ends (open, not threaded).
- Pleated Filter Media. Maximum surface area for efficient debris and contaminant capture.
- Durable Construction. Built for extended performance in hot spa water conditions.
- Easy to Install. Direct replacement with no modifications required. The Two-Filter Rotation System
We strongly recommend buying two filters and rotating them fortnightly to monthly depending on usage. Here is why the rotation system works so well:
- Remove Filter A from the spa
- Install clean Filter B immediately so the spa is back in action
- Soak Filter A overnight in Filter Cleaner Soak
- Rinse thoroughly and leave to dry completely
- Next rotation: swap back to Filter A and clean Filter B
Your spa never runs on a dirty filter, filters last significantly longer because proper drying prevents premature breakdown, and water quality stays consistently high between cleans. How to Clean Your Spa Filter
- Remove filter from the spa
- Rinse with a garden hose and spray between pleats at a 45-degree angle to dislodge debris
- Soak overnight in a bucket of water with Filter Cleaner Soak to remove oils, sunscreen, and mineral deposits the hose cannot shift
- Rinse thoroughly until water runs clear
- Allow to dry completely before reinstalling or storing
Important: Never use a pressure washer - it damages the pleated media and shortens filter life significantly. When to Replace Your Spa Filter
- Filter has been in use for 12 months or more
- Pleats are visibly damaged, torn, or collapsed
- Filter no longer cleans up properly after soaking
- Water remains cloudy despite correct chemical balance
- Reduced jet pressure that does not improve after cleaning
Even with regular cleaning, spa filters should be replaced every 12 months. The pleated media degrades over time and loses filtration efficiency even when it looks clean. Recommended Accessories
- Filter Cleaner Soak 1L - purpose-made cartridge filter soak, removes oils and mineral deposits.
- Spa Pool Starter Kit - complete water care bundle for new spa owners.
- 5-in-1 Test Strips - test water chemistry weekly to confirm your filter is performing correctly. Frequently Asked Questions
Q: How do I know if this filter fits my spa?
A: Check your existing filter for the code A20, CD20, Alpine Spas 20, or BBF4AA04 on the end cap, or measure it: 265mm length, 125mm diameter, 54mm centre hole at both ends (open, not threaded). If unsure, email a photo of your old filter to perfectpoolsnz@gmail.com and we'll confirm before you order.
Q: What Alpine spa models does this fit?
A: Compatible with selected Alpine Spas models sold in New Zealand including Alaska, Alberta, Arctic, Aspen, Barbados Eco, Belmont, Calgary, Colorado, Cub, Duo, Eden, Edmonton, Frontier, Fuji, Glacier, Kingston, Malibu Eco, Montreal, Nepal, Nevada, Nordic, Nova, Oasis, Ohio, Oregon, PureSpas Fiesta4, PureSpas Grand6, PureSpas Lux3, PureSpas Revive5, PureSpas Retreat6, PureSpas Splash6, Tibet, Toronto, Utah and Yukon. Always confirm by matching physical dimensions.
Q: What is the difference between A20, CD20, Alpine Spas 20, and BBF4AA04?
A: These are all equivalent part numbers for the same filter sold under different codes by different suppliers. If your filter shows any of th