Interstitial lung disease creates a different buying problem from stable low-flow COPD. Resting oxygen needs may look modest while walking demand rises quickly, and progression can move a household from a 5 LPM to a 10 LPM requirement sooner than expected.
Best choices by prescription
| Prescription and use | HHZ starting choice | Why |
|---|---|---|
| Up to 4 LPM continuous, mainly home use | Home Medix HM-KV | Quiet 13 kg value option with live purity display and long warranty |
| 5–10 LPM or rapid progression | Home Medix HM-KX | Value-focused true 10 LPM platform with alarms and India-side support |
| High-flow with stronger local dealer coverage | Oxymed 10 LPM | Service reach can outweigh a paper-spec advantage |
| Premium imported high-flow | Nidek Nuvo 10 or DeVilbiss 10 LPM | Imported lineage, with different pressure and service strengths |
Why HM-KV leads below 5 LPM
HM-KV covers 0.5–5 LPM with 93% ± 3% published oxygen concentration, a live purity display, ≤40 dB sound, approximately 13 kg weight, and a three-year/10,000-hour warranty. It is the better-value first purchase when the patient’s resting and exertional prescription stays safely within its range.
Do not buy it merely because resting oxygen is 2 LPM. Ask whether the six-minute walk test required 5 LPM or more and whether the pulmonologist expects near-term escalation.
When to buy 10 LPM first
A 10 LPM purchase is reasonable when:
- Walking titration already exceeds 5 LPM.
- Resting requirement approaches the 5 LPM ceiling.
- Disease is progressing quickly and the clinician expects escalation.
- Oxygen must be bled into prescribed NIV equipment.
- The household needs enough reserve for clinician-directed changes.
Do not combine concentrators or improvise high-flow interfaces without the respiratory team. End-stage ILD can exceed the capability of one home concentrator.
Portable oxygen caution
Pulse settings are not litres per minute. ILD patients often breathe rapidly during exertion, which can reduce trigger reliability and effective dose. Trial the exact portable device during a supervised walk test before purchase.
For patients who truly require portable continuous flow, see continuous-flow portable oxygen concentrators in India.
Buying checklist
- Record resting, sleeping, and walking flow separately.
- Verify purity at the prescribed flow after warm-up.
- Confirm local compressor and sieve-bed service.
- Plan cylinder backup for outages and repairs.
- Reassess the equipment after each major change in walk-test requirement.
Verdict
HM-KV is HHZ’s first value choice for an ILD prescription that stays below 5 LPM. HM-KX is the value high-flow step-up when the clinical requirement reaches 6–10 LPM. The correct purchase follows measured exertional demand and expected progression, not the disease label alone.