Help center
Frequently asked questions.
Orders, returns and every device we make. Search it, or jump to your model.
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Orders
Processing, shipping cost, payment and where to buy.
When will my item ship?
Orders are processed on the same or next business day after being placed.
How much does shipping cost?
Standard domestic shipping is always free, with no minimum purchase amount. You may upgrade to expedited shipping for a flat fee of $15 at checkout.
Can I pay with installments?
Yes. Interest-free installments are available at checkout through Affirm, Sezzle, Afterpay and others — select your preferred method at checkout.
Where can I buy Klarta products?
On our website at klarta.com and through the Klarta store on Amazon Marketplace.
Klarta on Amazon →Something is wrong with my order — who do I tell?
Email support@klarta.com with your order number and what happened. Include the delivery address if the problem is an address error, so we can catch the parcel before it ships.
Returns & exchanges
30 days from delivery. Started by email, handled by a person.
What is your return and exchange policy?
We offer returns and exchanges for undamaged items within 30 days of delivery.
Who pays for return shipping?
It depends where you bought. On orders from klarta.com the customer pays return shipping. On orders from our Amazon store we cover it — Amazon issues the prepaid label.
How do I start a return or an exchange?
Email support@klarta.com and we will set it up. Include your order number and say whether you want a refund or a different model.
I bought on Amazon — what then?
Start the return inside Amazon's returns system rather than by email — and the return shipping is on us. Warranty and technical questions still come to us directly.
Forste — air purifier
Quiet and design-focused, for small to medium spaces.
What size room is Forste for?
Forste is ideal for small to medium spaces up to 1,237 sq ft — bedrooms, nurseries, home offices and most apartments.
What is inside the filter?
A three-stage filtration system: a pre-filter, an H13 filter and a carbon filter. The pre-filter holds hair and larger dust, the H13 layer captures fine particles and the carbon layer adsorbs gases and odors.
Forste or Stor — which one?
Both purifiers use the same three-stage filtration, so compare them on the space they are rated for: Forste up to 1,237 sq ft, Stor up to 2,775 sq ft. If a kitchen and living room are one open space, count them as one room.
Compare the purifiers →Where is the manual?
A manual covering use and maintenance is included in the package with every device.
Stor — air purifier
Powerful and sleek, for large and open-plan spaces.
What size room is Stor for?
Stor is ideal for large spaces up to 2,775 sq ft — open-plan living areas, basements and anywhere the kitchen and the sofa share a room.
Does Stor filter differently from Forste?
No. Both purifiers carry the same three-stage system — pre-filter, H13 filter and carbon filter. The difference is the volume of air each one is built to move.
Do I need one purifier or two?
Air does not travel through closed doors, so one device per room you actually use beats one large device in a hallway. Size each room on its own.
See the room-size guide →Should I run it all day?
An air purifier only cleans while air is moving through the filter, so continuous running is normal — we published a guide on what that costs and when it makes sense.
Read the guide →Humea — humidifier
Evaporative humidification for pets, plants and people.
How much water does the Humea hold?
The Humea Smart Evaporative Humidifier holds 0.8 gal (3 L) of water.
Can I add essential oils or fragrance?
No. Do not add any substances — including fragrance oils, essential oils, medical products or other additives — to the water in the tank. They may damage the device.
Why can I not see any mist?
Humea is evaporative rather than ultrasonic, so it does not produce a visible cloud. Judge it by the humidity reading in the room, not by what you can see.
How often does the Humea filter need changing?
About 6 months with proper use. Rinse it under running water about once a month in between, and see the manual for the full routine.
Do I need a purifier as well?
They solve different problems — a purifier removes particles, a humidifier corrects dry air. Our guide walks through when you need one, the other or both.
Air purifier vs humidifier →Wi-Fi & the app
Pairing, controlling the device remotely, and what to do when it fails.
How do I connect my device to Wi-Fi?
Download the app and pair your device. Once the app is installed, hold the Wi-Fi button on the device down until it blinks, then select the correct device from the options in the application.
Watch the tutorial →The app cannot find my device
Check three things in order: the phone is on a 2.4 GHz network, the Wi-Fi icon on the device is blinking rather than steady, and the phone, device and router are close together for the first pairing. If it still fails, email support@klarta.com with your model and router brand.
What can I do from the app?
Pair the device, control it remotely and change its settings without walking to the panel.
Is there a video walkthrough?
Yes — our YouTube channel has a step-by-step Humea tutorial playlist.
Klarta on YouTube →Maintenance
Filters, cleaning and keeping performance where it started.
How often do I need to change the filter?
Filter life depends on how much you run the device and how dirty the local air is, so the US manuals recommend replacing the purifier filters at least once a year. The Humea evaporative filter lasts about 3–6 months, depending on your water hardness. Every device also has a filter indicator, and the exact routine is in the manual in the box.
Where do I buy replacement filters?
In the filters collection on klarta.com, or through the Klarta store on Amazon.
Shop filters →Is there a video for changing a filter?
Yes. Our YouTube playlist covers the Humea filter change and cleaning step by step.
Tutorials playlist →My device is louder than it used to be
First check whether it is simply running at a higher fan speed because the air is dirtier. If it is a new mechanical noise, reseat the filter and the cover, then email us the model with a ten-second video with sound.
How can I contact the Klarta team?
Through the contact page, or directly by email at support@klarta.com.
Nothing matched that.
Try a simpler word — shipping, return, filter, Wi-Fi, Humea. Or send the question to us and we will answer it and add it here.
Still stuck?
Email us the model and your order number and a person on our team will reply by email.
If the answer is not here
Three paths, one inbox behind them.
Whichever you pick, it lands in the same inbox, and a person on our team replies.
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Order, return or exchange
Email support@klarta.com with your order number. Returns and exchanges are started this way — there is no automated portal.
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Setup or maintenance
Watch the step-by-step tutorials on our YouTube channel — pairing, filter changes and cleaning.
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A device that is faulty
Send the model and, when there is a noise involved, a ten-second video with sound. It saves an entire round of questions.
