This replacement HEPA filter is made for the Phoenix Guardian R Pro HEPA Air Scrubber System. Phoenix rates it at 99.97% efficiency, and CCW lists it at 99.97% at 0.3 microns. It is the final filtration stage in the Guardian R, capturing the fine airborne particles that pass the pre-filter. It suits restoration professionals, healthcare facilities and industrial applications where air quality matters.
Phoenix part number 4031864. Ordered as each, but also packed in an outer of 8.
How the Guardian R Filters Air
Phoenix describes the Guardian R as a two-stage system. A 1 in pleated pre-filter catches the larger dust first; this HEPA filter then captures the fine particles. An optional carbon/potassium permanganate filter can be added for odour work.
| Position | Phoenix part | Size (Phoenix) | CCW listing |
|---|---|---|---|
| Pre-filter (pleated media) | 4031877 | 1 x 18 x 18 in | Phoenix Pre-Filter for Guardian R |
| HEPA filter | 4031864 | 2.5 x 18 x 18 in | This filter |
| Carbon / potassium permanganate (optional) | 4031878 | 1 x 18 x 18 in (CCW listing) | Phoenix Carbon Filter for Guardian R |
Change the pre-filter regularly. It is far cheaper than the HEPA filter and is what keeps the HEPA from loading up early.
Key Features
- Filtration: Captures 99.97% of particles ≥0.3 µm, including dust, pollen, mould spores and other airborne contaminants (CCW listing; Phoenix states 99.97% efficient).
- Durable Construction: Built to withstand demanding restoration environments.
- Designed for the Guardian R: Made to fit the Phoenix Guardian R Pro system for efficient airflow and performance.
- Low Maintenance: Straightforward installation and replacement reduce downtime.
- Ordering: Ordered as each but also packed in an outer of 8.
Technical Specifications
| Model Number | 4031864 (Phoenix) |
| CCW SKU | PRP4031864 |
| Material | High-Efficiency Particulate Air (HEPA) media |
| Dimensions | 457 mm x 457 mm x 65 mm (CCW) — Phoenix catalogue: 2.5 x 18 x 18 in (see note below) |
| Filtration Efficiency | 99.97% at 0.3 microns |
| Weight | Approximately 1.95 kg |
| Compatible Systems | Phoenix Guardian R Pro HEPA System, Guardian R500, Super Scrub 500 (CCW listing — see below) |
| Pack | Each (outer of 8) |
Check Before You Order
- Depth. Phoenix's product catalogue lists this filter as 2.5 x 18 x 18 in, which matches CCW's 457 x 457 x 65 mm. Phoenix's current Guardian R web page and some US distributors describe it as 2 x 18 x 18 in. Measure the old filter if your machine is not a standard Guardian R.
- Part number. A later edition of the Guardian R service instructions lists the HEPA filter as part 4043627 (2.5 x 18 x 18 in). CCW is confirming with Phoenix whether 4043627 supersedes 4031864 or is a different version. Both are listed for the Guardian R.
- Other machines. Guardian R500 and Super Scrub 500 are listed by CCW as compatible; CCW has not found a Phoenix document confirming this. If you run one of those machines, send us the model and serial number and we will confirm.
When to Change It
The Guardian R has a change-filter light. Phoenix's instructions are to change the pre-filter first; if airflow is still low with a clean pre-filter fitted, the HEPA filter needs replacing. On mould, fire and demolition jobs, check the pre-filter every day.
Do not vacuum, blow out or wash a HEPA filter. Cleaning damages the media and the seal, and a damaged HEPA filter is no longer a HEPA filter.
Changing It Safely
- Switch off and unplug the machine. Change the filter where contamination will not spread — inside containment on contaminated jobs.
- Wear the PPE the job calls for; a used filter from a mould or fire job carries what it caught.
- Bag the used filter straight away and seal the bag before it leaves the work area.
- Check the new filter's frame and gasket for damage, fit it the same way round as the old one (check the frame for an airflow arrow), and secure it with the hold-down clip so it seals all round. Phoenix lists the HEPA filter hold-down clip as part 4032954 — ask us if yours is missing or damaged.
- Refit a clean pre-filter at the same time.
Phoenix notes that servicing the Guardian R's electrical components is for a qualified technician. A filter change does not require opening the electrics.
Applications
- Water Damage Restoration: Removing airborne contaminants during restoration projects.
- Healthcare Facilities: Filtering airborne particles during works in occupied facilities. An air scrubber reduces airborne particles; it does not on its own make an area sterile, so follow the facility's infection-control requirements.
- Construction Sites: Controls dust and particulate matter to support worker safety.
- Industrial Settings: Improves air quality in manufacturing and processing plants.
Why Choose This Filter?
- Genuine Phoenix part: Made for the Guardian R, which Phoenix says is independently tested for HEPA performance of the whole device at over 500 CFM.
- Ready stock: Available for dispatch across Australia.
- Expert support: Our team can help with technical questions on your Guardian R.
- Competitive pricing: Sold individually, so you only buy what you need.
Frequently Asked Questions
How often should I replace the HEPA filter?
When the change-filter light stays on or airflow stays low after fitting a clean pre-filter. Change the pre-filter often and the HEPA filter lasts much longer.
Can I clean and reuse it?
No. Replace it.
Is it the same as the 18 x 18 x 2 in filters sold in the US?
Phoenix lists 4031864 for the Guardian R. Depth is quoted as 2 in by some sources and 2.5 in by others; CCW's measurement is 65 mm (about 2.5 in).
Do I need the carbon filter?
Only for odour. The carbon/potassium permanganate filter is optional and does not replace the HEPA filter.
Related Products
- Phoenix Pre-Filter for Guardian R (1 x 18 x 18 in)
- Phoenix Carbon Filter for Guardian R
- Phoenix Round Cover for Guardian
- Injectidry Direct-It Duct Ring for ADP5/ADP9 to Guardian
- Air Scrubbers
- Filters & Filter Bags
Ensure optimal air quality on your jobs with the Phoenix 4031864 HEPA Filter. Not sure which filters your air scrubber takes? Send us the model and serial number and we will confirm the full filter set before you order.
