Description
Quick answer: These are genuine ResMed inlet (air) filters for the Astral ventilator, supplied as a pack of four (part 27939). The inlet filter traps dust and airborne particles before room air enters the device, helping keep the airflow clean and protecting the ventilator. Filters are a routine consumable — a 4-pack keeps replacements on hand for scheduled changes.
What’s included
- 4 × ResMed Astral inlet filters (part 27939)
About these filters
The Astral draws in room air, and the inlet filter is the first line of defense: it captures dust, pollen, and other airborne particles so they don’t enter the device or the delivered airflow. Over time filters become loaded with debris and less effective, which is why they’re replaced on a routine schedule — more often in dusty environments or homes with pets. Using genuine ResMed filters ensures the correct fit and airflow characteristics for the device. Follow the replacement interval in the Astral user/clinical guide.
Key features
- Genuine ResMed inlet filters (27939) — correct fit for the Astral ventilator.
- 4-pack — a convenient supply for scheduled replacements.
- Traps dust and airborne particles — cleaner airflow into the device.
- Helps protect the ventilator — keeps debris out of the unit.
- Simple to change — no tools required.
Specifications
| Specification | Detail |
|---|---|
| Product type | Inlet (air) filter |
| Compatible ventilator | ResMed Astral series |
| Pack quantity | 4 filters |
| Type | Replaceable consumable |
| ResMed reference / SKU | 27939 |
| Brand | ResMed |
How often should they be replaced?
Replace the inlet filter according to the schedule in the Astral user/clinical guide, and sooner if it looks dirty, discolored, or clogged. Homes with pets, smoke, or high dust levels typically need more frequent changes. Inspect the filter regularly as part of routine device care, and never run the device without a filter fitted.
Frequently asked questions
How many filters are in the pack?
Four.
Which device do they fit?
The ResMed Astral series ventilator.
How often should I change them?
Follow the interval in the Astral user/clinical guide — and replace sooner if the filter looks dirty or clogged, or if the environment is dusty.
Can I wash and reuse them?
No — these are disposable filters and should be replaced, not washed.
Do I need a prescription?
Replacement filters generally do not require a prescription. Contact us if you’re unsure.
Can I get them delivered in Brooklyn or shipped nationwide?
Yes — Stark Medical Supplies offers local pickup and delivery in Brooklyn and across NYC, plus USPS shipping throughout the continental U.S.
Use with your ResMed Astral according to the device’s user/clinical guide. Do not operate the device without a filter fitted, and do not wash or reuse disposable filters.
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