KNKA sells HEPA air purifiers, home and basement dehumidifiers and genuine replacement filters through its US online store. Every order ships free, air purifiers start at $99.99 for the PetAir 2500 and dehumidifiers start at $155.55. Purchases also come with 30-day returns and a 2-year guarantee, so check these coupons before you buy.
2 Year
Warranty Deal
After the return window, KNKA's 2-year guarantee covers technical failures caused by manufacturing defects with a free repair or replacement.
30 Day
Returns Deal
You have 30 calendar days from delivery to request a return, as long as the item is in original packaging with all accessories and in like-new condition. Email support for a return authorization first.
$29.99
From Deal
Genuine APH3000 replacement filters come in a 2-pack for $29.99, and the 2.64 gal external water tank for KNKA dehumidifiers is also $29.99.
$155.55
From Deal
The 2,500 sq ft 34-pint dehumidifier (PD22SC) is $155.55, the Energy Star 5,000 sq ft 74-pint basement model is $211.99 and the RainbowSense PD30MA-20 is $222.22.
$259.99
Now Deal
The KNKA APH4000 air purifier for rooms up to 1,695 sq ft costs $259.99 in white or black, with genuine APH4000 replacement filter 2-packs from $39.99.
$99.99
From Deal
The PetAir 2500 Air Purifier is $99.99, the APH3000 for rooms up to 1,123 sq ft is $109.99 and the AirMini 1000 is $115.28 in white, black or white with purple light.
Free
Shipping Deal
The KNKA US store banner offers free shipping on all orders of air purifiers, dehumidifiers and replacement filters, with no minimum spend stated.
FAQs
Find quick answers about coupon codes, deals, and store discounts.
Find 7 verified KNKA DTC coupon codes at DiscountCrown. Current savings include 2 Year Warranty. Browse active promo codes, deals, and shopping offers updated for Nov 2026.
Use this page to compare the latest KNKA DTC coupon codes, check offer details, and open the store when you are ready to shop.
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