A common procurement misstep: hospitals buy a single ventilator model and try to use it across ICU, NICU, and transport. The result is a fleet that's overspecced for some uses, underspecced for others, and no one is happy. Ventilators are not interchangeable across acuity levels.
This guide separates the three classes and explains how to pick within each.
Class 1: ICU ventilators
Adult and paediatric ICU ventilators support the broadest range of mechanical-ventilation modes — volume-controlled, pressure-controlled, pressure-support, SIMV, SmartCare/PS automated weaning, BiLevel, APRV, and increasingly proprietary modes (NAVA on Maquet, IntelliSync on Hamilton). They run on central gas supply, have advanced graphics packages, and integrate with hospital-network monitoring.
Reference platforms: [Drager Evita V500/V600](/brands/drager), Hamilton G5 / C6, Mindray V Series, Maquet Servo-i / Servo-u.
When to choose what: - Drager Evita / Hamilton: premium ICU with advanced modes (SmartCare/PS, NAVA, ASV). Right for tertiary ICU and ECMO-heavy units. - Mindray / Maquet mid-tier: strong workhorses for general medical/surgical ICU with conventional modes plus modern alarm management. - Refurbished options: often where the budget compression makes sense — verify modes available on the specific software revision.
ICU ventilators are typically run 24/7. Service contracts matter — uptime is the metric, not purchase price.
Class 2: Neonatal ventilators
Neonatal ventilators are different machines. They handle tiny tidal volumes (4–10 mL), respiratory rates up to 150+ breaths per minute, and offer modes that ICU ventilators don't — high-frequency oscillation (HFO/HFOV), volume-guarantee with pressure-control backup, and synchronisation algorithms tuned for irregular spontaneous breathing patterns in preterm infants.
Reference platforms: [Drager Babylog VN500](/brands/drager), Hamilton C3-Neonatal, GE/Datex-Ohmeda Engström Carestation in neonatal mode.
The Babylog VN500 is the global reference for tertiary NICU mechanical ventilation. Its volume-guarantee algorithm is a clinical differentiator for preterm management. Refurbished VN500 units are available; verify HFO functionality on the specific unit.
Critical: don't try to ventilate neonates on adult ICU ventilators. Even the best volume-control mode on an adult ventilator can't match a neonatal-specific platform's flow accuracy at small tidal volumes.
Class 3: Transport ventilators
Transport ventilators sacrifice mode breadth for portability, ruggedisation, battery life, and quick boot-up. They're used between bedside and CT, between hospitals (inter-facility transport), and in pre-hospital ambulance settings.
Reference platforms: Hamilton T1, Drager Oxylog 3000+, [Philips Trilogy Evo](/brands/philips), Allied AHP300.
A transport ventilator does NOT replace an ICU ventilator. It bridges patient transport. Common mistake: extending a transport ventilator to multi-day use because the ICU is full — clinically risky and accelerates wear on equipment not designed for continuous duty.
Sizing your fleet
For a tertiary hospital with adult ICU, NICU, and a mixed-acuity general ward, the realistic fleet is roughly: - Adult ICU: one ventilator per bed (high-acuity beds), plus 10–15% spares. - NICU: one neonatal ventilator per bed (every NICU bed should be ventilator-capable in tertiary referral facilities). - Step-down and ward: mid-tier ICU ventilators acceptable; budget BiLevel-capable units for COPD/CHF management. - Transport: roughly 1 unit per 4–6 ICU beds.
Mixing brands across the fleet is acceptable as long as each class is internally consistent — same vendor across ICU bedside ventilators simplifies biomedical training and reduces consumable proliferation. Mixing within a class (e.g. Drager and Hamilton in the same ICU) creates ongoing operational friction.
Service and consumables
All ventilators have a similar consumables structure: patient circuits, filters (HME, viral/bacterial), flow sensors, O2 sensors, and water traps. Annual consumables spend per actively-used ventilator: USD 800–1,500.
Service contracts: comprehensive coverage runs 8–10% of purchase per year. Critical-care equipment shouldn't be on break-fix.
Send an inquiry through our [contact](/contact) page if you're scoping a NICU build-out or adult ICU expansion — we can help model the fleet sizing against your case-mix and budget.