Concentrators, CPAP & Nebulizers — Matched to the Prescription
Three device classes do the heavy lifting in home and clinic respiratory care: oxygen delivery, positive-airway-pressure therapy, and aerosol-medication devices. This is the reference desk for telling them apart, knowing when each is clinically indicated, and reading the flow ratings, prescriptions, and maintenance cycles that actually drive the purchase.
Respiratory Care EquipmentHow to read this landscape
Respiratory equipment is prescription-driven, not preference-driven. The clinician's order specifies the modality — supplemental oxygen at a stated flow rate, a pressure therapy for sleep-disordered breathing, or an inhaled medication delivered as a fine aerosol — and that order narrows the device class before any model comparison begins. Get the class right first; spec the model second.
The three workhorse classes below cover the overwhelming majority of chronic-disease management and home-health needs. They are not interchangeable: an oxygen concentrator does not deliver medication, a nebulizer does not raise blood-oxygen saturation, and a CPAP treats airway collapse rather than gas exchange. Each card frames the modality, the indication, and the spec that governs the choice — then routes to the detailed guide.
The three workhorse device classes
Oxygen delivery, positive-airway-pressure therapy, and aerosol-medication devices. Pick the class the prescription dictates, then compare models within it.
Oxygen Concentrators
For chronic hypoxemia — COPD, pulmonary fibrosis, late-stage heart failure. Indicated when a prescription specifies supplemental O2 at a stated flow. The choice splits on continuous-flow stationary units (typ. 5 LPM, some to 10 LPM) versus pulse-dose portable units rated in dose settings, not LPM — a distinction that determines whether the unit can ever cover a sleeping or high-exertion patient.
Spec oxygen delivery
CPAP & PAP Therapy
For obstructive sleep apnea and related sleep-disordered breathing, confirmed by a titration study. Fixed-pressure CPAP, auto-adjusting APAP, and bilevel BiPAP differ by how they respond to the airway through the night; humidification, mask fit, and ramp behavior drive adherence far more than the headline pressure spec. Adherence data — not the device — is what insurers audit.
Compare PAP modes
Nebulizers
For delivering inhaled medication — bronchodilators, corticosteroids, antibiotics — as a breathable aerosol, often for patients who can't coordinate a metered-dose inhaler. The decision is jet (compressor) versus mesh: jet units are rugged and inexpensive but bulky and loud; mesh units are quiet, portable, and battery-capable but cost more and demand careful cleaning. Particle size (MMAD) governs how deep the drug deposits.
Choose a nebulizer
Prescriptions, flow ratings, and maintenance drive the choice
Within each class, three variables do most of the work. The prescription sets non-negotiable parameters — the ordered oxygen flow, the titrated PAP pressure, the named inhaled medication — and a device that can't meet them is disqualified before lead time or price ever matter.
Flow and output ratings separate models that look identical on a spec sheet: a 5 LPM continuous concentrator and a pulse-dose portable are not substitutes, and a nebulizer's particle size determines whether the drug reaches the lower airway at all. Maintenance is the quiet cost center — sieve-bed replacement on concentrators, mask and filter cycles on PAP, and the cleaning discipline that keeps mesh nebulizers from clogging. Spec the consumable cadence at purchase, not after the first failure.
How to route a respiratory equipment decision
A repeatable path from order to device, whether you're a procurement manager outfitting a clinic or a coordinator equipping a home.
Start from the order, not the catalog
Read the prescription for the modality and its stated parameters — flow rate, pressure, medication. That single line eliminates two of the three device classes immediately.
Match the use case to the form factor
Stationary versus portable, jet versus mesh, fixed versus auto-adjusting. A homebound patient and an active, mobile one need different units even under the same prescription.
Verify the spec meets the clinical floor
Confirm continuous-flow capacity, pressure range, or particle size against the order. Pulse-dose units in particular fail to cover sleeping and high-exertion demand.
Price the maintenance, not just the device
Account for sieve beds, masks, filters, tubing, and cleaning supplies over the expected service life. The consumable stream often outweighs the unit cost within a year.
Frequently asked questions
Can one device cover oxygen, pressure therapy, and medication?
No. The three classes address different physiology — gas exchange, airway patency, and drug delivery — and are not interchangeable. A patient with overlapping needs (for example, COPD with coexisting sleep apnea) is equipped with more than one device, each spec'd to its own prescription.
What's the difference between a continuous-flow and a pulse-dose oxygen concentrator?
Continuous-flow units deliver a steady oxygen stream rated in liters per minute (LPM) and can serve a sleeping or high-demand patient. Pulse-dose portable units release oxygen only on inhalation, rated in dose settings rather than LPM — lighter and more mobile, but often unable to cover overnight or high-exertion use. Always reconcile the prescription's flow requirement against the unit's actual capability.
How do CPAP, APAP, and BiPAP differ?
CPAP holds one fixed pressure all night. APAP adjusts pressure automatically within a range as the airway changes. BiPAP delivers separate inhale and exhale pressures, used when a single pressure is poorly tolerated or for certain higher-acuity needs. The titration study determines which is appropriate; comfort features and mask fit determine whether the patient actually uses it.
Jet or mesh nebulizer — which should we stock?
Jet (compressor) nebulizers are durable and low-cost but bulky, loud, and tethered to power — a sound default for fixed clinic use. Mesh nebulizers are quiet, compact, and battery-capable for travel or pediatric use, at a higher price and with stricter cleaning requirements to prevent clogging. Particle size (MMAD) and the specific medication should guide the final pick.
What recurring maintenance should we budget for?
Concentrators need periodic sieve-bed and filter service; PAP devices need mask, cushion, filter, and tubing replacement on a regular cycle; nebulizers — especially mesh — need disciplined cleaning and periodic part replacement. Build the consumable cadence into the procurement decision so the total cost of ownership is visible up front.
Need this mapped to your facility or patient?
Tell us the prescriptions, the use cases, and the par levels you're working with, and we'll frame the respiratory equipment decision class by class — concentrators, CPAP, and nebulizers — with the specs and maintenance cadence that drive each choice.