Description
xImprove the air you share with Ontheone’s True HEPA Filter Replacement, designed for Filter Queen Defender 4000, 7500, and 360 air cleaners. This 3‑stage setup combines a pre-filter, a True HEPA core, and an activated carbon layer to address common day-to-day particles and odors. The result is a thoughtful, practical upgrade for spaces like living rooms, bedrooms, and home offices where you want to maintain a comfortable atmosphere without hassle.
Three-stage filtration designed for real-life spaces
The system starts with a pre-filter that captures larger intruders such as dust, pet hair, and lint. By catching these before they reach the main filter, it helps extend the life of the HEPA stage and keeps replacement costs down over time. The True HEPA element then traps an estimated 99.97% of particles as small as 0.3 microns, including common allergens and fine dust, contributing to a crisper, fresher feel in the room. The activated carbon stage targets household odors from everyday activity—pets, cooking, and smoke—so spaces feel less impacted by lingering smells after use.
Real‑world use cases
- Living rooms where cooking odors briefly linger after meal prep.
- Bedrooms where pet dander and dust can accumulate during the day.
- Home offices where a lighter, fresher atmosphere supports focus and comfort.
What’s included and compatibility
- 1 x True HEPA Filter
- 4 x Activated Carbon Pre-Filters
The kit is compatible with Filter Queen Defender 4000, 7500, and 360 models. It is not an OEM product, but it is designed to fit the intended purifiers. If you’re unsure, please double-check your purifier’s model label before purchasing.
Maintenance tips
- Replace roughly every 6–8 months, depending on air quality and how often the purifier runs.
- Store spare filters in a dry space and handle them with clean hands to preserve performance.
Why choose Ontheone
- Quality materials and a focus on production control help ensure reliable performance.
- A cost-conscious option for refreshing purifier filters and maintaining clean air without compromising on fit.
Disclaimer: This is not an OEM product. Brand names and model designations are used solely to demonstrate compatibility.
FAQ
Q: Which purifiers is this filter compatible with?
A: Compatible with Filter Queen Defender 4000, 7500, and 360 models; verify your unit's model before purchasing.
Q: How often should I replace the filter?
A: Replacement is recommended every 6–8 months, depending on usage and air quality.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
- Choosing a selection results in a full page refresh.