Zenity

Zenity spa filter cartridges

Here you will find the Zenity range as it is stocked at PoolParthub.com: replacement filter cartridges for portable spas and hot tubs. The cartridge is the one component in a spa that is guaranteed to need replacing, because it is the part that physically collects everything the water picks up — body oils, lotions, hair, pollen and fine dust. Pumps and heaters can run for years, but pleated media has a working life measured in months, and a tired cartridge shows up as weaker jets, longer heat-up times and water that will not stay clear no matter how carefully it is dosed.

The listing currently centres on the PCAL100, a cartridge described for use in Cal Spas, Coast Spas and Maax Spas. If a spa of one of those makes is in use and the existing element is collapsing, discoloured or simply overdue, this is the part number to work from.

Què cobreix el rang

Rather than a broad catalogue of pool filter elements, this brand page is focused on hot tub and spa filtration. In practice that means a single pleated cartridge type, supplied as a direct replacement rather than a universal fit:

• PCAL100 – spa filter cartridge referenced for Cal Spas, Coast Spas and Maax Spas, sold under the Zenity name with the same PCAL100 part number used in the trade.
• Pleated media construction – the standard format for spa filtration, where a folded sheet of synthetic media is wrapped around a perforated core and closed off at each end with a moulded cap.
• Single-element use – suited to spas that run one cartridge in a skimmer-style filter housing rather than a multi-cartridge bank.

How to identify the right cartridge

Spa cartridges look similar to one another and are easy to order incorrectly, so it is worth spending two minutes on identification before buying. The reliable method is to take the old element out and check it against four points:

• Número de peça – most cartridges carry a code printed or moulded into one of the end caps. If PCAL100 appears there, or in the spa’s own manual, the match is straightforward.
• Longitud total – measure from the outside face of one end cap to the outside face of the other, not the pleated section alone.
• Diàmetre exterior – measure across the widest point of the pleats, keeping the tape square to the body so the reading is not inflated.
• End cap type – note whether each end is a flat open hole, a closed cap, a moulded handle, or a threaded connection, and whether one end sits over a standpipe in the housing. A cartridge of the correct length and diameter will still leak past the media if the end fittings differ.

Where a spa has been bought second-hand and the original paperwork is missing, the cabinet or equipment bay often carries a model label. Comparing that against the makes listed for the cartridge is usually quicker than trying to identify the housing by eye.

Getting the most out of a cartridge

Pleated media does not fail suddenly; it clogs gradually, and most of the lifespan lost in a spa is lost to neglect rather than age. Rinsing the pleats with a hose, fanning them apart so the spray reaches the base of each fold, clears the loose debris. A periodic soak in a dedicated cartridge cleaner lifts the oils and minerals that a hose cannot shift, and letting the element dry fully before it goes back restores a surprising amount of flow.

Keeping a second cartridge on the shelf makes this far easier: one can be soaking and drying while the other is in the spa, so the tub never has to run unfiltered. Replace the element outright once the pleats stay grey after cleaning, the media feels soft or furred, or the end caps have begun to separate from the body.

Zenity at PoolParthub.com

Stocked here as a straightforward replacement part for spa owners who know the format they need and simply want the correct element rather than a compromise fit. Filter cartridges are consumables, and they are priced and listed as such.

Customers across Europe order from the same catalogue of pool and spa spares, so a cartridge can be added alongside chemicals, seals or other service items in a single order. If there is any doubt about which element a particular housing takes, measuring the old one first is always the safest starting point.