Nidek Nuvo Lite Mark 5 Oxygen Concentrator (5L)
Nidek Nuvo Lite Mark 5 Home Oxygen Concentrator (Model 525)
Overview
The Nidek Nuvo Lite Mark 5 is an ultra-compact, lightweight home oxygen concentrator — just 32 pounds — that delivers continuous flow from 0.125 to 5 LPM across 12 settings at 90% concentration. It's one of the quietest concentrators available, running at about 40 dBA (roughly a soft conversation), and one of the most energy-efficient at 330 watts, so it's comfortable to run day and night without driving up the power bill. This 525 model includes the oxygen monitor (OCSI), which shows the concentration being delivered and alarms if it drops.
Nidek's RPSA (Rapid Pressure Swing Absorption) technology reaches full purity in under 3 minutes for a fast startup, and a single-knob, lockable flow meter keeps the setting simple and tamper-resistant. The unit is humidifier-ready for drier climates, moves easily from room to room on four casters with a built-in handle, and offers rear-panel access to the filter for straightforward maintenance. Built on the durable, proven Nuvo platform with a metal outlet fitting and made in the USA, it's backed by a 3-year warranty.
Key Features
- Ultra-compact and lightweight — just 32 lbs, among the lightest 5-liter units.
- Continuous flow from 0.125 to 5 LPM across 12 settings at 90% concentration.
- Very quiet — about 40 dBA, roughly a soft conversation.
- Energy-efficient — 330 watts average, lower than many competing units.
- Built-in oxygen monitor (OCSI) shows and alarms on the delivered concentration.
- RPSA technology reaches full purity in under 3 minutes for fast startup.
- Single-knob, lockable flow meter to prevent accidental changes.
- Humidifier-ready for drier climates or added nasal comfort.
- Four casters and a built-in handle for easy room-to-room movement.
- Rear-panel access to the filter for simple maintenance.
- Durable metal outlet fitting on the proven Nuvo platform; American-made.
- 3-year warranty.
The Nuvo Lite Mark 5 is the standard, everyday 5-liter home unit, and its standouts are weight, quiet, and efficiency: at 32 pounds it's among the lightest 5-liter concentrators, it runs at about 40 dBA (quiet enough for sleep), and it draws just 330 watts — noticeably less than many competitors, which adds up on the power bill for a device that runs around the clock. RPSA startup brings it to full purity in under 3 minutes. This 525 model includes the oxygen monitor. It's a stationary home unit (continuous flow, plugs into the wall) on casters, so pair it with a portable for going out. If you need higher flow or pressure (8 or 10 LPM), the Nidek Nuvo 8 or Nuvo 10 are the step up.
Technical Specifications
- TypeStationary (home) oxygen concentrator
- BrandNidek Nuvo Lite Mark 5 (Model 525)
- Delivery ModeContinuous flow
- Flow Range0.125–5 LPM (12 settings)
- Oxygen Concentration90% (+6.5% / -3%)
- Outlet Pressure7 psig
- Oxygen MonitorOCSI (on Model 525)
- Sound Level~40 dBA
- Power330 watts average; 115V / 60 Hz
- StartupUnder 3 minutes (RPSA)
- Weight32 lbs (14.5 kg)
- Dimensions14" W x 9" D x 23" H
- Max AltitudeUp to 7,500 ft
- MobilityFour casters + built-in handle
- Country of OriginUSA
- Warranty3-year
- IncludesUnit, cannula with tubing, manual
How quiet and efficient is it?
It runs at about 40 dBA — roughly a soft conversation — which is quiet enough for sleep, and it draws just 330 watts, lower than many concentrators. That combination makes it easy to run around the clock without a noticeable impact on the power bill.
Does the 525 include an oxygen monitor?
Yes — the 525 model includes the OCSI oxygen monitor, which shows the concentration being delivered and alarms if it drops. (The 520 version does not include the monitor.)
Is it portable, and what maintenance does it need?
It's a stationary home unit (32 lbs) on four casters, so it rolls easily from room to room but plugs into the wall for continuous use. Maintenance is minimal — clean the rear-access filter on a regular schedule; RPSA brings it to full purity in under 3 minutes on startup.
A valid prescription is required for this device. Specifications and included contents are provided for reference and may be updated by the manufacturer without notice. Verify settings, contents, and prescription requirements against the product documentation before use.
This item requires an Rx or Professional License
Compliance Standard: FDA Class II Medical Device Regulations (21 CFR Part 807)
To ensure strict compliance with current Food and Drug Administration (FDA) regulations, EnhDme enforces a rigorous prescription verification policy for specific restricted medical devices. Because federal law restricts these devices to sale by or on the order of a licensed healthcare provider, orders containing prescription-regulated equipment will remain on a compliance hold and will not be dispensed until a valid prescription is successfully received and verified by our compliance team.
