![Photo Catalytic Oxidation [P9-50]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Photo-Catalytic-Oxidation-P9-50-300x300.png)
![Carbon Potassium Permanganate [P9-10]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Carbon-Potassium-Permanganate-P9-10-300x300.png)
Filters for the
PD900 DW
![Carbon Prefilter [P9-55]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Carbon-Prefilter-P9-55-300x300.png)
Carbon Prefilter
P9-55
replace every 3–6 months
![HEPA Filter [P4-00]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-HEPA-P4-00-300x300.png)
HEPA Filter
P4-00
replace every 2–3 years
![UVC Lights [P9-91]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-UVC-Lights-P9-91-300x300.png)
UVC Lights
P9-91
replace every 2–3 years
![Carbon Prefilter Blanket [PW4-55]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Carbon-Prefilter-Blanket-300x300.png)
Photo Catalytic Oxidation Filter
P9-50
replace every 2–3 years
![Carbon Pre-Filter [P4-10]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Carbon-P4-10-300x300.png)
Carbon Potassium Permanganate Filter
P9-10
replace every 1–2 years
Filter Kit - 900 Series
P9-03
This kit includes a variety of filters for the 900 series
Filters for the
PDHEPA350
![Inner Carbon VOC Blanket (Optional) [PW3-10]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Inner-Carbon-VOC-300x300.png)
Inner Carbon VOC Blanket
(optional) PW3-10
Replace every 3–6 months
![HEPA Cylinder [PW3-40]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-Filter-Hepa-Cylinder-300x300.png)
HEPA Cylinder
PW3-40
Replace every 2–4 years
Carbon Prefilter Blanket
PW3-55
Replace every 3–6 months
Filters for the
PDHEPA450
Carbon VOC After Filter
PW4-10
Replace every 2–4 years
HEPA
PW4-40
every 2-4 years
Carbon Prefilter Blanket
PW4-55
Replace every 3–6 months
Filters for the
PDHEPA550-3
![HEPA [PW6-40]](https://purdistribution.com/wp-content/uploads/2025/09/PUR-FIlter-True-HEPA-Cylinder-300x300.png)
HEPA
PW6-40
Replace every 2-4 years
Inner Carbon VOC Blanket
PW6-10 (Optional)
Replace every 3–6 months
Carbon Prefilter Blanket
PW6-55
Replace every 3–6 months
Filters for the
PDHEPA650
Inner Carbon VOC Blanket
PW6-10
Replace every 2–4 years
HEPA
PW6-40
Replace every 3–6 months
Carbon Prefilter Blanket
PW6-55
Replace every 3–6 months
Filters for the
PDHEPADM400VS
Carbon Prefilter
P4-10
Replace every 3-6 months
![MERV11 [P4-55]](https://purdistribution.com/wp-content/uploads/2026/03/PUR-Filter-Merv11-768x768-1-300x300.png)
MERV 11
P4-55
Replace every 3-6 months
HEPA Filter
P4-00
Replace every 2–4 years
Quick Filter Lookup
Not Sure Which Filter You Need? Search by your filter part number or air purifier model to quickly find matching replacement filters and compatible products. Try P4-00 (filter part number), or PD900 DW (air purifier model).
