Tuttnauer 3870EA Autoclave Review: Is This Large-Capacity Sterilizer Worth It?

Running a busy surgical suite, dental group practice, or veterinary clinic means one thing: downtime on your sterilizer is not an option. If you've been searching for a large-chamber autoclave that can handle high-volume loads without babysitting every cycle, the Tuttnauer 3870EA has likely come across your radar — and for good reason. This review breaks down exactly what you get, who should buy it, and whether the used market pricing makes sense for your facility.

Product Overview

The Tuttnauer 3870EA is a large-format, fully automatic steam sterilizer designed for mid-to-high volume medical, dental, veterinary, and laboratory environments. The model number tells you most of what you need to know: 38 refers to the chamber diameter in centimeters, 70 is the chamber depth in centimeters, and EA stands for Electrical Automatic — meaning the unit runs complete sterilization cycles with minimal operator intervention beyond loading and unloading.

Key Specifications at a Glance:

Tuttnauer is one of the most respected names in sterilization globally — their equipment is found in hospitals, clinics, and universities across more than 120 countries. The 3870EA sits in their mid-to-large benchtop/floor-standing range, comparable in scale to the Midmark M11 but with significantly greater chamber capacity.

Hands-On Experience

Setup and Installation

The 3870EA is not a plug-and-play tabletop unit. It requires a dedicated electrical circuit (typically 208–240V) and ideally a water feed and drain connection for streamlined operation, though reservoir-fed models exist. Plan on professional installation — either your biomedical engineering team or a certified Tuttnauer service technician.

Initial setup involves filling the reservoir (if applicable), running a Bowie-Dick or vacuum leak test (on pre-vacuum models), and confirming cycle parameters match your load types. The digital control panel is straightforward once you've oriented yourself with the manual, and Tuttnauer's documentation is thorough and well-organized.

Daily Use

In clinical operation, the 3870EA's automatic cycle management is where it earns its reputation. Load the trays, select your cycle type, press start — the unit handles the entire sequence: heat-up, sterilization hold, exhaust, and drying. Cycle times vary depending on load and temperature selection, but gravity cycles at 134°C typically complete in the 45–60 minute range including drying.

The large chamber accommodates multiple tray configurations simultaneously, which is essential in high-throughput environments. Where smaller autoclaves force you to run back-to-back cycles just to keep up with instrument demand, the 3870EA often clears the backlog in a single run.

Standout Features

• High chamber volume — handles cassettes, pouched instruments, and wrapped packs that won't fit in smaller units
• Fully automatic cycle management — reduces operator error and training burden
• Tuttnauer's proven reliability — units from the early 2000s are still in clinical service with proper maintenance
• Parts availability — unlike some obscure brands, Tuttnauer maintains a strong aftermarket parts and service network across North America

Pros and Cons

Pros

• Large 79-liter chamber handles high-volume loads efficiently
• Automatic operation minimizes training requirements and human error
• Tuttnauer is a globally recognized brand with decades of clinical use
• Strong parts and service support network
• Used units available at significant savings over new
• Durable stainless steel chamber construction

Cons

• Requires dedicated electrical circuit — not a simple plug-in install
• Larger footprint than many practices anticipate; measure your space carefully
• Used units may require service/calibration before clinical use
• Not suitable for flash sterilization (designed for complete packaged cycles)
• Older units may lack USB data logging (important for Joint Commission compliance in some facilities)

Performance Breakdown

Build Quality — 9/10

Tuttnauer's stainless steel chamber construction is genuinely heavy-duty. Units from the late 1990s and early 2000s continue to perform reliably when maintained — that's a testament to build quality rarely seen in medical equipment. Gaskets and solenoid valves are wear items that need periodic replacement, but the core chamber and frame are built to last decades.

Sterilization Reliability — 9/10

When properly calibrated and maintained, the 3870EA delivers consistent, validated sterilization cycles. It meets FDA Class II requirements and is compatible with biological and chemical indicator monitoring protocols. That said, any used unit should be validated with spore tests before returning to clinical use — this is standard practice regardless of brand.

Ease of Use — 8/10

The automatic EA designation means operators don't need to manually manage cycle phases. The control interface is functional rather than flashy — no touchscreen, but the digital display and membrane keypad are reliable and easy to read. Training a new staff member takes about 30 minutes.

Value for Money — 8/10

New, the 3870EA lists in the $10,000–$15,000 range depending on configuration. Used listings regularly appear in the $1,000–$8,500 range, with price heavily dependent on age, condition, service history, and whether the seller has tested it. That represents exceptional value for a high-capacity, brand-name sterilizer — IF you factor in potential service costs before clinical deployment.

Parts and Service Availability — 9/10

This is Tuttnauer's strongest advantage over second-tier brands. Door gaskets, solenoid valves, heating elements, and control boards are available through Tuttnauer directly, multiple biomedical distributors, and third-party parts suppliers. You're not hunting for obsolete components.

Who Should Buy the Tuttnauer 3870EA

• Surgical centers and ASCs that need high-volume instrument throughput and require a documented service history from a trusted brand
• Multi-provider dental group practices running 8+ operatories where a smaller autoclave creates bottlenecks
• Veterinary hospitals with surgical suites needing flexible load configurations
• University or research labs requiring validated steam sterilization for media, glassware, and instruments
• Biomedical equipment resellers refurbishing units for resale — strong demand makes these a solid acquisition
• Budget-conscious buyers who need large-chamber capacity without paying new unit prices

Who Should Skip This

• Solo practices with low instrument volume — a Tuttnauer 2540 or Midmark M9 will meet your needs at a fraction of the cost and footprint
• Facilities without 208–240V capacity — if your space only has standard 120V outlets and you're not prepared for an electrical upgrade, this isn't the right unit
• Buyers who need immediate deployment without a service budget — any used autoclave should be serviced and validated before clinical use; if you need a turnkey solution, budget for a refurbished unit from a certified dealer
• Flash sterilization applications — the 3870EA is a packaged goods sterilizer, not designed for unwrapped instrument flash cycles

Alternatives Worth Considering

Tuttnauer 2540EA

The smaller sibling to the 3870EA, with a 25cm × 40cm chamber. If your volume doesn't justify the 3870EA's footprint or power requirements, the 2540EA offers the same brand reliability and parts availability at a lower price point — typically $400–$2,500 used.

Pelton & Crane OCM / Delta

Another workhorse in the dental and small surgical market. Pelton & Crane units are widely available used and have a comparable service network. They tend to run slightly smaller chambers than the 3870EA but may be easier to source locally.

Midmark M11

The M11 is often compared to Tuttnauer's mid-range offerings. It features a sealed chamber design (no reservoir to fill) and a strong reputation in dental environments. Used M11 units are plentiful. The chamber is smaller than the 3870EA, so consider your throughput needs carefully.

Browse our full guide to used autoclaves for more side-by-side comparisons across brands and chamber sizes.

Where to Buy

The Tuttnauer 3870EA is widely available on the used market. Here are the best current options:

eBay — The largest marketplace for used medical equipment. Active listings currently show units ranging from $1,000 to $8,500 depending on condition. Filter by seller feedback rating and look for listings that include photos of the control panel display and chamber interior. Sellers like heavywallequipment (USD $8,500 for refurbished/tested units) and others at lower price points represent the range you'll encounter.

• Search Tuttnauer 3870EA on eBay

Amazon — Less common for large autoclaves, but occasionally available through third-party medical equipment sellers.

• Search Tuttnauer 3870EA on Amazon

Buying Tip: Prioritize listings that include a stated service history, photos of a recent biological indicator test, or units sold by established biomedical equipment dealers. The $1,000 end of the market typically reflects cosmetically rough or untested units; budget an additional $300–$800 for professional inspection and calibration before clinical deployment.

Frequently Asked Questions

What does "3870EA" mean on a Tuttnauer autoclave? The numbers indicate chamber dimensions: 38cm diameter × 70cm depth. "EA" stands for Electrical Automatic, meaning the unit runs fully automatic sterilization cycles — you don't manually manage the heat-up, sterilization hold, or exhaust phases.

What power supply does the Tuttnauer 3870EA require? The 3870EA requires a 208–240V dedicated circuit, either single-phase or three-phase depending on the specific model configuration. Consult the unit's serial plate and contact a licensed electrician before installation.

How do I know if a used Tuttnauer 3870EA is safe to use clinically? Any used sterilizer should be validated before clinical use. Run a full Bowie-Dick test (for pre-vacuum models), check door gasket integrity, confirm the temperature and pressure gauges read accurately, and run a biological indicator (spore test) before sterilizing patient-care instruments. Many biomedical equipment service companies offer inspection and validation services.

What's the typical lifespan of a Tuttnauer 3870EA? With proper maintenance — annual service, gasket replacement every 1–2 years, and regular cleaning — these units routinely last 20+ years. Units from the late 1990s and early 2000s are still in clinical service, which speaks to the build quality.

Where can I find replacement parts for the Tuttnauer 3870EA? Tuttnauer maintains a North American parts and service network. Parts are also available through biomedical equipment distributors and third-party suppliers. Common wear items (door gaskets, solenoid valves, heating elements) are readily available and not prohibitively expensive.

Is the Tuttnauer 3870EA FDA cleared? Yes, Tuttnauer autoclaves are FDA Class II medical devices. The 3870EA complies with applicable sterilizer standards. Always verify the specific unit's documentation is intact when purchasing used — FDA registration and compliance documentation should transfer with the unit.

Final Verdict

The Tuttnauer 3870EA is a genuinely capable, large-chamber sterilizer from one of the most trusted names in the industry. For high-volume medical, dental, veterinary, or laboratory environments, it hits the right combination of chamber capacity, automatic operation, and long-term serviceability. The used market pricing — particularly in the $1,500–$4,000 range for units with documented service history — represents exceptional value compared to new unit costs.

Our recommendation: Buy from a seller who can provide a service history or offer a tested/validated unit, and factor in $300–$800 for professional inspection if you're purchasing an untested machine. Do that, and the 3870EA is one of the smartest investments you can make in high-volume sterilization capacity.

For more options in this category, see our full roundup of used autoclaves and medical disinfection equipment. ```