Tuttnauer 3870EA Review: The Gold Standard for High-Volume Sterilization

If your practice is consistently maxing out a smaller autoclave — waiting on cycles, falling behind on instrument turnover, or running sterilization late into the afternoon — the Tuttnauer 3870EA is likely already on your radar. This fully automatic, large-capacity steam sterilizer is a workhorse trusted by dental offices, surgical centers, veterinary clinics, and hospital departments worldwide. But is it the right fit for your workflow, and is the price justified? We break it all down.

Product Overview

The Tuttnauer 3870EA is a Class B-capable, fully automatic gravity and pre-vacuum autoclave with a 15" × 30" chamber — one of the largest tabletop sterilizers in its class. It is designed for facilities that need high-throughput sterilization of unwrapped instruments, wrapped packs, pouched items, and hollow loads.

Tuttnauer is an Israeli-American manufacturer with over 90 years in the sterilization industry. The 3870EA sits at the upper end of their tabletop lineup, competing directly with Midmark M11 and Ritter M9 units — though it outclasses both on raw chamber volume.

Hands-On Experience

Setup and Installation

The 3870EA requires a standard 120V/20A outlet and either a plumbed water line or manual reservoir filling. Facilities with plumbing connections will find the setup straightforward; a licensed technician should handle the initial installation, drain connections, and cycle validation. First-time calibration and documentation for JCAHO or state compliance is well-supported by Tuttnauer's technical team.

The front-panel interface is intuitive: a clear LCD display, cycle selection buttons, and a lockable door with a safety interlock that prevents opening under pressure. Operators with minimal training can master daily operation within one shift.

Daily Use

In a dental or surgical environment where instrument sets rotate every 30–60 minutes, the 3870EA's 30" depth is its defining advantage. A full tray load that would require two runs in a smaller unit clears in one cycle. Gravity cycles complete in roughly 60 minutes including drying; pre-vacuum cycles for porous or complex hollow instruments take 70–80 minutes.

The automated water management system minimizes operator intervention — a meaningful quality-of-life improvement versus semi-automatic models that require manual water additions between cycles. The built-in printer (on models so equipped) produces cycle records for compliance documentation without additional software.

Standout Features

• Pre-vacuum capability: Penetrates complex hollow instruments and wrapped porous loads more reliably than gravity-only units
• Automatic door seal: Reduces wear-related leaks that plague manual bayonet-style doors
• Validation-ready: Supports biological indicator (BI) testing protocols required by OSHA and most state dental boards
• Self-contained reservoir option: Useful for facilities without direct plumbing access

Pros and Cons

Pros

• Exceptionally large chamber for a tabletop unit — processes full surgical instrument sets in one cycle
• Fully automatic operation reduces staff errors and oversight burden
• Pre-vacuum cycles handle a broader range of load types than gravity-only competitors
• Robust build quality consistent with Tuttnauer's long-standing industrial reputation
• Wide service network; parts and certified technicians are readily available nationwide
• Strong resale value — used units retain pricing well

Cons

• High upfront cost: new units list above $10,000; even used/refurbished units run $6,000–$8,000
• Physically heavy — requires a reinforced countertop or dedicated cabinet
• External plumbing connection is strongly preferred; reservoir-only use increases maintenance frequency
• Larger footprint than many competing tabletop units (factor this into your operatory layout)
• Cycle times are not faster than smaller units — the advantage is capacity per cycle, not speed

Performance Breakdown

Who Should Buy the Tuttnauer 3870EA

• High-volume dental practices running 10+ operatories that need instrument sets turned over quickly throughout the day
• Oral and maxillofacial surgical centers sterilizing cassettes, forceps sets, and wrapped packs in the same workflow
• Veterinary hospitals with mixed loads including hollow instruments and wrapped surgical drapes
• Hospital central sterile departments needing a reliable tabletop unit for satellite sterilization areas
• Facilities replacing an aging Statim or M9 that have outgrown its capacity and need a validated upgrade path

Who Should Skip This

• Solo practitioners or small offices with low daily instrument volume — the operating cost and footprint won't pencil out vs. a Midmark M9 or Tuttnauer 2540
• Budget-constrained buyers who can't support $6,500+ for a used unit or ongoing service contracts
• Facilities without adequate countertop support — this unit requires a solid surface rated for significant weight
• Practices needing rapid small-batch sterilization — the Statim cassette sterilizer is faster for single-set turnaround despite lower total capacity

Alternatives Worth Considering

Tuttnauer 2540M (Semi-Automatic)

At roughly half the price of the 3870EA, the 2540M is a proven workhorse for medium-volume practices. It lacks pre-vacuum cycles and requires manual water management, but for offices that don't need the full 15×30" chamber, it delivers reliable sterilization at a lower entry point. Browse used dental sterilization equipment →

Midmark M11

The M11 is a direct competitor with a comparable chamber (11" × 18") and a loyal following in the dental market. It's often priced lower than the 3870EA on the used market and has an excellent service network. The trade-off: significantly less chamber volume and no pre-vacuum capability on base models.

Pelton & Crane OCM

A common sight in older dental offices, the OCM is gravity-cycle only but extremely durable. If your load types don't require pre-vacuum and your volume is moderate, used OCM units can be had for under $2,000. For complex wrapped loads or hollow instruments, it's not adequate. See our full medical autoclave buying guide for a deeper comparison.

Where to Buy

Used and refurbished Tuttnauer 3870EA units are actively available on the secondary market. Current listings we've found:

• Search Tuttnauer 3870EA on eBay — Sellers including ewz-surplus ($7,800), buyhitek ($7,500), and youelectric ($6,350) have active listings. Always verify cycle count history, last service date, and whether the unit includes a working printer module.
• Search Amazon for Tuttnauer 3870EA — New and dealer-refurbished units appear periodically; useful if you need warranty coverage.

When purchasing used, request the service history log and insist on a pre-purchase inspection by a certified biomedical equipment technician. Verify that the chamber has no pitting corrosion, the door gasket seals cleanly, and the heating elements pass a functional test cycle before finalizing any purchase.

For related equipment needs, browse our disinfection and sterilization equipment section for complementary items.

Frequently Asked Questions

What is the chamber capacity of the Tuttnauer 3870EA? The 3870EA has a chamber measuring approximately 15 inches wide by 30 inches deep, giving it roughly 70 liters of usable volume — among the largest available in a tabletop-format autoclave.

Does the Tuttnauer 3870EA require plumbing? It can operate with an internal water reservoir, but external plumbing is strongly recommended for high-volume use. Reservoir-only operation requires more frequent refills and drain cycles, increasing operator burden and potential for mineral buildup.

Is the Tuttnauer 3870EA FDA-cleared? Yes. The 3870EA carries FDA 510(k) clearance for use as a steam sterilizer in healthcare settings. Always verify that any used unit you purchase retains its original documentation and has not been modified in ways that void its clearance.

What cycles does the Tuttnauer 3870EA run? Standard cycles include gravity sterilization (121°C and 134°C), pre-vacuum (134°C), liquid cycle, and unwrapped instrument cycles. The pre-vacuum cycle is the key differentiator from entry-level autoclaves.

How long do cycles take? Gravity cycles run approximately 45–60 minutes including drying. Pre-vacuum cycles typically complete in 70–80 minutes. Exact times vary by load density and the facility's steam quality.

What maintenance does the 3870EA require? Weekly tasks include cleaning the chamber, checking the door gasket, and inspecting the strainer. Monthly or quarterly tasks include replacing the water filter, running biological indicator tests, and inspecting the heating elements. Annual preventive maintenance by a certified technician is recommended and often required for compliance documentation.

Final Verdict

The Tuttnauer 3870EA is a genuinely excellent autoclave for facilities that have the volume to justify it. Its large chamber, pre-vacuum capability, and fully automatic operation make it one of the most productive tabletop sterilizers on the market — and Tuttnauer's service network means you won't be stranded when it needs attention. Used units in the $6,300–$7,800 range represent solid value if thoroughly inspected before purchase. If your practice is consistently bottlenecked on sterilization capacity, this is the unit that removes that bottleneck. ```