Klarta Forste: H13 + carbon filter set
Klarta Stor: H13 + carbon filter set
Klarta Humea: evaporative wick filters
Humidifier filters: the part that does the humidifying
The wick filter is the only part of the Klarta Humea you replace. It draws water up from the tank, and the fan moves room air through it so the water evaporates into the room.
Each filter lasts about 3 to 6 months, depending on your water hardness and how much you run the humidifier. When it's used up, the display shows FR.
Air purifier filter sets: two filters, two jobs
Each filter set replaces the two main filters in the Klarta Forste and the Klarta Stor: an H13 filter and an activated carbon filter.
The H13 filter helps capture fine particles, including smog and cigarette-smoke dust, mold spores, and plant, animal and dust-mite allergens. The carbon filter absorbs gases such as formaldehyde and other VOCs and helps reduce odors.
Both purifiers also have a fine-mesh pre-filter that catches larger particles such as dust and hair. Check it every 2 weeks and vacuum it on low or wipe it with a damp cloth. On the Klarta Stor, it's built into the H13 filter and is replaced along with it.
Keep your Humea filter fresh: the everyday routine
A few minutes of daily care keeps the wick working well. This is the routine from the Klarta Humea manual; the full version is in the user manual.
- Use cold water. Tap, distilled, mineral or drinking water, no warmer than 104 °F (40 °C). Add nothing to it: no soap, fragrance, essential oils or cleaners.
- Change the water every day. Switch off and unplug, pour out what's left, then refill.
- Rinse the filter every day. Lift off the top housing, take out the filter and float, and rinse the filter under running water.
- Wash the tank every 1–2 days in warm water, up to 86 °F (30 °C), with a soft cloth.
- Let it dry itself. When the water runs low, two lines appear on the display, and the fan keeps running for about 7 hours (10 in sleep mode) to dry the unit, then stops.
- Taking a break? If you won't use the humidifier for more than 2 days, empty the tank and let the filter dry.
- Descale when needed. Soak the filter for 8–20 minutes in a 1:1 mix of vinegar and water no hotter than 140 °F (60 °C), then rinse it under running water. The color may fade slightly.
- Skip harsh cleaners. Never use solvents or abrasives, and never put the top housing in water or under the tap.
How often should I change the Humea filter?
Each wick filter lasts about 3 to 6 months. Hard water and long daily run times shorten that. The Humea also counts its running hours and tells you when a filter is due.
When the filter is used up, the display shows FR and the humidifier stops until a new one is in. Replace it sooner if it's stained after a long break, or if fresh water and a rinse don't clear a smell.
Swapping it takes no tools: switch off and unplug, lift the upper housing off the tank, replace the filter and refit the housing. Then hold On/Off for 3 seconds until it beeps to reset the counter.
Activated carbon filter: for odors and gases
The activated carbon filter works alongside the H13 filter. The H13 filter handles fine particles; the carbon filter handles gases and odors.
What the carbon filter does
- Absorbs gases, including formaldehyde and other volatile organic compounds (VOCs).
- Helps reduce the compounds behind unpleasant odors.
Replace it together with the H13 filter at least once a year, in both the Klarta Forste and the Klarta Stor. Never wash the carbon filter.
Matched filter sets, replaced together
The H13 and activated carbon filters for the Klarta Forste and Klarta Stor come as a set, because they're due at the same time: Klarta recommends a fresh set at least once a year. How long a set lasts depends on how much you run the purifier and on your local air quality.
When the FILTER indicator lights up on the display, it's time. Each set is made for one purifier: the Forste set fits the Klarta Forste, and the Stor set fits the Klarta Stor.
FAQs
Frequently asked questions
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Air purifiers: replace the H13 and activated carbon filters in the Klarta Forste and Klarta Stor at least once a year. Humidifier: the Klarta Humea wick filter lasts about 3 to 6 months. How long a filter lasts depends on how much you run the device, and on your air quality or water hardness.
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Never wash the H13 or activated carbon filters. The pre-filter mesh on the Forste and Stor only needs a vacuum on low or a damp cloth every 2 weeks. The Humea wick is different: rinse it under running water every day, and descale it with water and vinegar when needed.
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Each device takes its own filter. The Forste Genuine Filter Replacement Set fits the Klarta Forste, and the Stor Genuine Filter Replacement Set fits the Klarta Stor. The Klarta Humea takes the PRO Evaporative Filter, also sold as a two-pack. Filters don't swap between models.
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The H13 filter helps capture fine particles, including smog and cigarette-smoke dust, mold spores, and plant, animal and dust-mite allergens. The activated carbon filter absorbs gases such as formaldehyde and other VOCs and helps reduce odors. The Humea wick filter doesn't clean the air: it holds the water the humidifier evaporates.
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Forste and Stor: the FILTER indicator on the display lights up. After the change, reset the counter in the Smart Life app (Settings > Reset filter); on the Stor you can also hold Reset for 6 seconds. The Stor resets only while the FILTER indicator is lit. Humea: the display shows FR and the humidifier stops until you fit a new filter and hold On/Off for 3 seconds to reset the counter.
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Yes, the air purifier sets do. The Forste and Stor sets each include a separate activated carbon filter alongside the H13 filter. The Klarta Humea uses an evaporative wick filter instead, which holds water rather than filtering the air.
