Alpine C18 Spa Filter 2-Pack | CD18 BBF5QP02 | 143mm x 160mm
The smarter way to buy your Alpine C18 filters. This 2-pack gives you everything you need to run the two-filter rotation system, the single most effective thing you can do to extend filter life, maintain water quality, and keep your spa running without interruption.
One filter stays in the spa. The other soaks, dries, and waits. Swap fortnightly. Your spa never runs on a dirty filter, and each filter lasts significantly longer because it dries properly between uses.
Product Specifications
| Filter Code | C18 (also sold as CD18, BBF5QP02) |
| OEM Reference | 2014 |
| Outside Diameter | 143mm (approx.) |
| Length | 160mm (approx.) |
| Top Endcap | Semi-circle / bar handle (open top) |
| Bottom Endcap | 46mm SAE coarse thread |
| Filter Type | Pleated spa cartridge |
| Quantity | 2 x filter cartridges |
Compatible Alpine Spa Models
Compatible with selected Alpine Spas models using the C18 / CD18 / BBF5QP02 filter format, including:
San Marino, Santorini, Monaco, Mont Blanc, Whistler, Blackburn, Makalu, Montana, Vermont, Summit, Matterhorn, Sierra, Lucania, McKinley, Vancouver, Munro, Everest, K2 and Quebec.
Important: Always confirm fitment by matching your existing filter's physical dimensions and thread before ordering. This filter suits the C18 / CD18 format: 143mm diameter, 160mm length, semi-circle/bar handle top, 46mm SAE coarse thread bottom. 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 C18
- CD18
- BBF5QP02
- OEM 2014
Why Buy the 2-Pack?
- Best Value. Lower cost per filter vs buying two singles separately.
- Two-Filter Rotation Ready. Everything you need to start the rotation system immediately.
- Never Run on a Dirty Filter. One in the spa, one soaking and drying.
- Extends Filter Life. Proper drying between uses prevents premature breakdown.
- Consistent Water Quality. Clean filtration every day, not just after a manual clean.
The Two-Filter Rotation System
- Remove Filter A from the spa
- Install clean Filter B immediately - 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, clean Filter B
Rotation frequency: fortnightly to monthly depending on spa usage and bather load.
How to Clean Your Spa Filter
- Remove filter from the spa
- Rinse with a garden hose - spray between pleats at a 45-degree angle to dislodge debris
- Soak overnight in a bucket of water with Filter Cleaner Soak - removes oils, sunscreen, and mineral deposits the hose can't 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 Filters
- Filters have been in use for 12 months or more
- Pleats are visibly damaged, torn, or collapsed
- Filters no longer clean up properly after soaking
- Water remains cloudy despite correct chemical balance
- Reduced jet pressure that doesn't improve after cleaning
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.
- Crystalline Chlorine 4kg - keep spa water sanitised alongside clean filtration.
- 5-in-1 Test Strips - test water chemistry weekly.
Frequently Asked Questions
Q: How do I know if this filter fits my spa?
A: Check your existing filter for the code C18, CD18, or BBF5QP02 on the endcap, or measure it - 143mm diameter, 160mm length, 46mm SAE coarse thread base, semi-circle/bar handle top. 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 including San Marino, Santorini, Monaco, Mont Blanc, Whistler, Blackburn, Makalu, Montana, Vermont, Summit, Matterhorn, Sierra, Lucania, McKinley, Vancouver, Munro, Everest, K2 and Quebec. Always confirm by matching physical dimensions.
Q: What is the difference between C18, CD18, and BBF5QP02?
A: These are all equivalent part numbers for the same filter sold under different codes by different suppliers. OEM reference 2014 is also used. If your filter shows any of these codes, this is the correct replacement.
Q: Why buy a 2-pack instead of two singles?
A: Better value per filter, and you get both filters at once ready to start the rotation system immediately. The 2-pack is the most popular option for customers who want to maintain consistent water quality year-round.
Q: How often should I rotate the filters?
A: Fortnightly to monthly depending on usage. Heavy daily use warrants fortnightly rotation; occasional use can stretch to monthly.
Q: How often should I replace my spa filters?
A: Every 12 months regardless of appearance. Filter media degrades over time and loses efficiency even when it looks clean.
Q: Can I use a pressure washer to clean the filters?
A: No - pressure washers damage the pleated media and significantly shorten filter life. Use a garden hose at 45 degrees between the pleats.
Q: Is this product covered by a warranty?
A: Yes, this product is backed by a manufacturer warranty. For warranty queries, contact us.
Pickup and Delivery
Perfect Pools Service Warehouse - 15C Douglas Alexander Parade, Albany, Auckland
Hours: Mon-Fri 9am-4pm | Sat 10am-2pm
NZ-wide delivery available. Charges calculated at checkout.
Questions? Email perfectpoolsnz@gmail.com or visit our contact page.
