Tuttnauer 3870EA Autoclave Review: The Large-Capacity Workhorse Worth Considering?

If your clinic, surgical center, or dental lab is drowning in sterilization bottlenecks, you already know the pain: undersized autoclaves that can't handle full wrapped instrument trays, long cycle times that slow your turnover, and the never-ending cost of service calls on aging equipment. The Tuttnauer 3870EA was built to solve exactly that problem — but is a used or refurbished unit worth the investment? We break it all down.

Product Overview

The Tuttnauer 3870EA is a large-format, fully automatic tabletop/floor-standing steam sterilizer designed for high-volume clinical environments. The "38" in the model number refers to the chamber diameter (approximately 38 cm), while "EA" denotes the Electric, Automatic configuration — meaning the door opens and closes automatically under program control, reducing operator error and improving throughput.

Designed for: Hospitals, ambulatory surgery centers, dental laboratories, veterinary clinics, and medical device reprocessing departments that process large or bulky wrapped loads daily.

Key specs at a glance:

• Chamber type: Pre-vacuum (B-type capable), gravity, and liquid cycles
• Door mechanism: Fully automatic motorized door
• Control system: Digital microprocessor with printout port for cycle documentation
• Load format: Handles both wrapped and unwrapped instruments, pouches, packs, and hollow instruments with prevacuum
• Compliance: Designed to meet FDA and CDC sterilization guidelines for wrapped instrument processing

Compared to the Tuttnauer 2340M — a popular smaller tabletop unit found in solo dental offices — the 3870EA operates in a different class entirely. It's closer in scope to a Midmark M11 on steroids, or a Pelton & Crane Delta Q scaled up for bulk processing.

Hands-On Experience

Setup and Installation

The 3870EA is not a plug-and-play countertop unit. It requires a dedicated water supply line, a drain connection, and in most configurations, a 208–240V single-phase electrical connection. Installation should be handled by a qualified biomedical technician or a Tuttnauer-certified service provider.

That said, once commissioned, the digital control panel is straightforward. Cycle selection is menu-driven, and the built-in printer (or USB data port, depending on the firmware version) makes regulatory documentation easy — a major plus for facilities subject to Joint Commission or state health department inspections.

Daily Use

In a busy environment, the 3870EA earns its keep. The automatic door is a genuine workflow upgrade over manual models — operators initiate the cycle, walk away, and return to a door that opens when sterilization and drying are complete. This matters more than it sounds when your staff is managing multiple rooms simultaneously.

Cycle times vary by program. A standard gravity cycle for unwrapped instruments runs efficiently, while a full pre-vacuum cycle for wrapped packs takes longer but provides the penetration needed for complex hinged instruments and porous loads.

The chamber capacity accommodates full-size instrument cassettes and wrapped surgical kits that smaller units simply can't handle. Facilities processing orthopedic trays, laparoscopic equipment containers, or large dental surgery setups will notice an immediate difference.

Standout Features

• Automatic door system — Reduces door-seal wear from improper manual operation and removes a common operator error point
• Pre-vacuum cycle — Essential for hollow instruments (handpieces, cannulas, tubing) and wrapped porous loads; not available on gravity-only units
• Cycle documentation — Built-in printout or data logging satisfies regulatory record-keeping requirements without external integrations
• Large chamber footprint — Handles loads that require multiple runs on a smaller unit, improving overall department throughput

Pros and Cons

Pros

• Large chamber handles bulk and wrapped loads in a single cycle
• Automatic door reduces operator fatigue and seal wear
• Pre-vacuum capability validates for complex instrument geometries
• Digital controls with cycle logging for compliance documentation
• Tuttnauer is a globally recognized brand with established service networks
• Refurbished units available at a fraction of new cost

Cons

• Requires professional installation (water, drain, dedicated electrical circuit)
• Larger footprint than tabletop units — not suited for small operatories
• Consumables (door gaskets, filters, biological indicators) are an ongoing cost
• Service and parts can be expensive if purchased outside a service contract
• Older units may lack modern connectivity (Wi-Fi logging, EHR integration)

Performance Breakdown

Who Should Buy the Tuttnauer 3870EA

• Ambulatory surgery centers that reprocess wrapped surgical packs and need documented cycle logs for accreditation
• Multi-operatory dental practices or labs that currently run two or three small autoclaves and want to consolidate sterilization
• Veterinary hospitals performing surgical procedures and processing large instrument sets
• Hospital CSSD departments looking for a supplemental unit to handle overflow during peak periods
• Refurbished equipment buyers who want a proven platform with an established parts supply chain

Who Should Skip This

• Solo practitioners or single-operatory offices — the capacity is overkill, and the installation requirements don't make sense for low-volume use. A Tuttnauer 2340M or Midmark M9 will serve you better.
• Facilities with no in-house biomedical support — without a service relationship, repairs on a larger unit can be costly and time-consuming
• Buyers seeking plug-and-play simplicity — if you need something running this week with no infrastructure work, look at smaller tabletop autoclaves instead
• Environments requiring Class B (EN 13060) full compliance — verify the specific unit's cycle validation with the seller before purchasing

Alternatives Worth Considering

Tuttnauer 3850EA / 3545EA

Tuttnauer's own smaller automatic models. If your volume is lower or your space is limited, these deliver the same automatic door and digital controls in a reduced chamber size. Widely available on the used market at lower price points.

Search for used Tuttnauer autoclaves on eBay

Midmark Ritter M11 UltraClave

A strong U.S. market alternative with excellent domestic service support. The M11 is a gravity/steam-flush autoclave — not pre-vacuum — so it's best for unwrapped or single-pouch loads. If your instrument mix is simpler, the Midmark service network is a real advantage.

Pelton & Crane Delta Q

Another well-regarded dental and clinical autoclave in the large tabletop category. Good build quality and available refurbished. Worth comparing if the 3870EA is out of budget or unavailable in your region.

You can find a broader selection of used autoclaves and sterilization equipment on our site, along with disinfection equipment for supporting your reprocessing workflow.

Where to Buy

Used and refurbished Tuttnauer 3870EA units appear regularly on the secondary market. Pricing varies significantly based on condition, hours of service, and whether the unit has been inspected and tested by the seller.

Current listings we've spotted:

• Units from equipment dealers starting around $2,500 for as-is units requiring service
• Inspected and tested units from established medical equipment resellers in the $7,500–$8,500 range
• Units marketed with a 2-year warranty from established resellers represent the strongest value if you're buying without an in-house service team

Search current eBay listings for the Tuttnauer 3870EA — filter by "Sold Listings" to benchmark real market prices, and prioritize sellers with documented service history or a stated return policy.

On Amazon, search for Tuttnauer large autoclaves to compare new and refurbished options with fulfillment by established medical equipment vendors.

Buyer tip: Always request the cycle count log or service records when purchasing a used autoclave. Units with documented preventive maintenance histories are significantly lower-risk than units sold "as-is, untested."

Frequently Asked Questions

Q: What is the chamber size of the Tuttnauer 3870EA? The 3870EA features a large-format chamber designed for high-capacity instrument processing. The "38" in the model designation refers to the chamber diameter in centimeters. Confirm exact interior dimensions with the seller, as configurations vary slightly between production runs.

Q: Does the 3870EA perform pre-vacuum cycles? Yes. The EA-series Tuttnauer units support pre-vacuum (also called pre-vac or B-type) cycles, which are required for validating wrapped loads, hollow instruments, and porous items like textiles. This distinguishes it from gravity-only units in smaller configurations.

Q: Is a used or refurbished Tuttnauer 3870EA safe to use? A professionally refurbished unit that has been inspected, had consumables replaced (door gasket, filters), and had cycles verified with biological indicators is appropriate for clinical use. Never place a purchased unit into service without running a full biological indicator validation cycle. Consult your infection control officer.

Q: What maintenance does the 3870EA require? Routine maintenance includes monthly door gasket inspection, chamber cleaning with approved autoclave cleaner, filter replacement per manufacturer schedule, and annual preventive maintenance by a certified biomedical technician. Biological indicator testing should be performed weekly per CDC guidelines.

Q: Can I use distilled water only, or does it have a built-in water system? The 3870EA is designed to operate with distilled or deionized water to prevent mineral buildup in the chamber and plumbing. Some configurations connect to a central distilled water supply line. Confirm the water supply requirements for your specific unit during installation planning.

Q: How do I verify the 3870EA is compliant with my facility's sterilization standards? The unit should have documentation of its sterilization cycle validation (Bowie-Dick test results, biological indicator logs). Verify that the cycle programs align with your facility's infection control policies and the manufacturer's IFU (Instructions for Use) for your instrument types.

Final Verdict

The Tuttnauer 3870EA is a serious piece of clinical infrastructure — not a casual purchase. For high-volume facilities that need reliable, validated sterilization of wrapped loads and large instrument sets, it delivers exactly what it promises. The automatic door, pre-vacuum cycles, and documentation capabilities make it one of the more capable units available on the refurbished market.

At $2,500–$8,500 for a used unit versus $15,000+ new, the value case is compelling — provided you budget for professional installation and a service relationship. Our recommendation: if your department is outgrowing smaller tabletop units and you have the infrastructure to support it, the 3870EA is a proven workhorse worth serious consideration. ```