Quick answer

Choose the Shower Filter Refill Capsule if you own the original Shower Filter 1.0. Choose the Hello Klean Refill Cartridges if you own the newer Shower Head + or Shower Head 2.0. The two are not interchangeable, so your shower head model decides the refill you need.

Why compatibility matters first

Before comparing price or features, check which shower head you have. Hello Klean designed the Shower Filter Refill Capsule exclusively for the original Shower Filter 1.0, while the Refill Cartridges fit only the Shower Head + and Shower Head 2.0. Installing the wrong refill can damage the unit or cause leaks, so match your model exactly.

Replacement frequency and performance

Both the Refill Capsule and the Refill Cartridges need replacement every 3–4 months. Each removes over 90% of chlorine, heavy metals, and impurities. The Refill Capsule is a single-piece design, while the Refill Cartridges come as a 2-piece set that fits the updated shower head models. Performance is essentially identical, so your choice depends entirely on compatibility.

Trade-offs to consider

  • Compatibility: The Refill Capsule works only with Shower Filter 1.0. The Refill Cartridges work only with Shower Head + and Shower Head 2.0. There is no cross-compatibility. Check your shower head model before buying.
  • Price per replacement: The Refill Capsule costs USD 24.00 (catalog price, down from USD 40.00). The Refill Cartridges cost USD 24.40 (down from USD 40.00). The difference is minimal. Price is not a deciding factor; compatibility is.
  • Design and installation: The Refill Capsule is a single-piece twist-in unit. The Refill Cartridges are a 2-piece set that fits the newer shower head models. Both are easy to swap. Installation is straightforward for either option.

Product facts at a glance

  • Shower Filter Refill Capsule: Compatible with our Shower Filter 1.0 only. Replace every 3–4 months to remove over 90% of chlorine, heavy metals, and impurities. If you have the original Shower Filter 1.0, this is your only correct refill option. The capsule is a single piece that twists in easily.
  • Hello Klean Refill Cartridges: For smarter showering, our 2-piece Refill Cartridges fits the new Shower Head + and Shower Head 2.0. Swap it out every 3-4 months to reduce chlorine, copper, and other unwanted impurities in your water. If you upgraded to the Shower Head + or Shower Head 2.0, you need these cartridges. The two-piece design matches the updated filter housing.

Which refill should you buy?

Best for

  • Owners of the original Shower Filter 1.0 who need a direct replacement
  • Anyone who wants a simple, single-piece refill at a slightly lower price

Not for

  • Owners of Shower Head + or Shower Head 2.0 (choose the Refill Cartridges instead)
  • Anyone who wants a refill that works across multiple shower head models