Aethon Zena — Specs, Price & Where to Buy (2026)

What is the Aethon Zena?

The Aethon Zena is an autonomous service robot designed for hotel and hospital material transport, manufactured by Aethon (a subsidiary of Singapore’s ST Engineering) in Pittsburgh, Pennsylvania. It is a wheeled delivery robot equipped with four lockable compartments that can each hold up to 11 kg, for a total payload of 45 kg. Key differentiators include 360° LiDAR navigation, a 10-hour LiFePO4 battery with auto-docking, and a compact, non-humanoid form factor for maneuvering in tight corridors. The Zena is primarily used for room service, linen, meal, and medication delivery in healthcare and hospitality settings.

Specifications

Here are the full technical specifications.

Price & Value

New MSRP: Undisclosed (contact manufacturer)

Used range: N/A

Aethon does not disclose list prices for the Zena robot; procurement is done via direct enterprise sales or leasing agreements. In the healthcare AMR sector, comparable payloads and features usually fall between $50,000 and $100,000, but actual costs may vary significantly based on fleet size and service contracts. The Zena’s value lies in its ability to autonomously shuttle materials 24/7, freeing staff for higher-value tasks. Because the robot is typically bundled with multi-year maintenance agreements, the total cost of ownership includes ongoing service and potential battery replacement. No public resale market exists, so depreciation is difficult to gauge; used units, if available, are likely sold through private channels or returned to the manufacturer.

Who Is It For?

Best for: - Hospitals requiring HIPAA-compliant medication transport with locking compartments - Hotels offering contactless room service with integrated elevator control - Healthcare facilities seeking to reduce staff walking time for linen/meal delivery

Not for: - Facilities with steep ramps or outdoor sidewalks (indoor-only navigation) - Applications needing item selection or dexterous manipulation (no robotic arm) - Budget-constrained small clinics (undisclosed, likely enterprise-priced)

Alternatives & Comparison

The Aethon Zena competes in the indoor logistics AMR space with robots from Savioke, Diligent Robotics, and Omron.

Verdict: For hotel room-service delivery with secure compartments, the Savioke Relay is a cheaper, more hotel-focused alternative. If manipulation and nurse-assistance is needed, Moxi is the clear choice despite higher cost. The Zena excels in hospital logistics with its four lockable bins and robust LiDAR navigation, but its lack of public pricing makes cost comparisons difficult. Buy the Zena if you need a dedicated hospital cart and can negotiate a direct contract.

Use Cases & Capabilities

Hospital Material Transport

The Zena navigates hospital corridors autonomously, using 360° LiDAR to avoid obstacles and staff. Its four lockable compartments can carry up to 45 kg of supplies such as lab samples, instruments, or pharmacy orders. Integration with hospital elevators and access controls allows cross-floor deliveries. The robot reduces staff walking time and can operate continuously for 10 hours. However, it cannot load or unload itself; staff must place items in the bins.

Medication Delivery

With lockable bins, the Zena enables secure transport of unit-dose medications from pharmacy to nursing floors. The Zena RX variant offers faster obstacle avoidance for these critical deliveries. Staff can use an interface to assign delivery routes, and the robot docks automatically for charging. The 10-hour battery ensures it covers multiple shifts. The lack of arms limits it to cart-based delivery only, requiring hand-off to nurses.

Hotel Room Service

In hospitality settings, the Zena delivers meals, toiletries, or linens directly to guest rooms. Guests can unlock their compartment via a code or app, maintaining privacy. The robot can ride elevators and navigate carpeted hallways with its 360° LiDAR. It reduces late-night staffing costs and enhances contactless service. However, it cannot handle bulk luggage or outdoor tasks.

Linen Delivery

The Zena efficiently moves fresh or soiled linens between laundry facilities and patient care areas. Its 45 kg payload handles large linen bags, and multiple compartments allow sorting by type. Continuous operation reduces turnaround time for clean linens. Staff can summon the robot as needed via a call system. Its flat-floor restriction means it won't cross loading docks or outdoor ramps.

History & Background

Aethon, founded in 2004 in Pittsburgh, Pennsylvania, pioneered autonomous mobile robots for hospitals with the TUG line. The Zena was first introduced in 2014 as a hotel-specific alternative, using the same navigation core but with a slim, lockable compartment design suitable for room service. In 2017, Aethon was acquired by ST Engineering, a Singapore-based defense and technology group, which expanded the robot’s reach into Asian markets. A pharmacy-specific variant, the Zena RX, was released in 2019 to handle unit-dose medication deliveries. As of 2026, the Zena platform is in its first generation and continues to be sold or leased to healthcare and hospitality enterprises.

Buying Used — What to Check

Verify battery health Battery degradation can significantly reduce runtime and incur replacement cost; ask for charge cycle count.

Request service history Service contracts may not be transferable, leaving you without manufacturer support or software updates.

Check software integration status Hospital IT integration (elevator control, access systems) may be tied to the original facility licensing.