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What Are 10 Things to Look For When Buying Your First Autoclave?

In any medical, dental, or veterinary clinic, infection control is the absolute baseline of patient trust and safety. At the heart of that protocol sits your autoclave—the powerhouse responsible for turning around your instruments between patients. Choosing the right autoclave isn’t just a matter of picking a model off a shelf. Between varying chamber volumes, cycle times, and an overwhelming array of features, narrowing down your criteria can save you a massive headache.

In this article, we’ll walk through 10 essential factors to evaluate when buying your first autoclave. With this checklist, you’ll better understand the features you need and ensure your practice is fully compatible with the equipment you choose.

What Will You Be Putting Into It?

First and foremost, choosing an autoclave requires a quick internal assessment. Looking at what your daily workflow produces is a crucial step in your buying journey. Focus on these two key areas:

  • Quantity: How many instruments do you use per day, and how quickly do you need them turned around? Your daily volume determines which specifications should take priority.
  • Type: Consider the types of instruments you process daily. Do you use complex tools with lumens or porous materials (like dental handpieces)? Do you have unique tools requiring a dedicated cycle? Or is your setup mostly standard items that don’t require specialized settings?

Knowing your daily inventory is vital. Some autoclaves are built for heavy-duty, standard loads, while others offer specialized, gentle cycles for delicate instruments.

Which Class is Right For You?

Autoclaves fall into distinct categories, or classes based on how they handle air removal:

  • Gravity Displacement (Class N): Relies on gravity to push air out through steam displacement. Best suited for unwrapped, non-porous solid instruments (depending on local regulations).
  • Pre-Vacuum (Class B): Features a vacuum pump that extracts air forcefully before steam is introduced. This ensures deep steam penetration, making it ideal for wrapped loads, porous items, and complex instruments with lumens.
  • Class S: A versatile middle-ground option. By incorporating partial vacuum features, Class S models achieve better steam penetration than basic Class N models without the higher price tag of a full Class B pre-vacuum system. This makes them an affordable choice for clinics with specific sterilization needs.

Tip: Always check your local and regional regulatory standards. In many jurisdictions, Class B autoclaves are mandatory for wrapped instruments and handpieces.

How Big of a Chamber Do You Need?

Depending on your practice, bigger isn’t always better. While a massive chamber holds more, it can waste energy if left half-empty. Look for a chamber size that comfortably accommodates your largest instrument sets and peak daily loads without excess space. Pay close attention to internal rack and tray configurations—how a chamber is laid out dictates how efficiently you can load it.

What Kind of Cycle Times Do You Need?

Time is money in a busy clinical environment. Remember that total cycle time includes the pre-heat phase, pressure pulses, sterilization phase, and drying phase. Faster cycle times mean quicker instrument turnaround, keeping your practice moving smoothly without equipment bottlenecks.

What Kind of Available Space Do You Have?

Where will your sterilizer live? Counter space is often tight in reprocessing rooms. Map out your clinic flow in advance to ensure the autoclave fits securely on your counter or floor while leaving ample room for dedicated dirty and clean set-down areas.

Bonus Tip: If you run a high-volume practice, consider buying two smaller autoclaves instead of one large unit. This gives you energy savings on smaller loads, staggered cycle times, and a built-in backup if one machine needs servicing.

Would Manual or Automatic Be Better?

Your autoclave‘s interface directly impacts operational efficiency:

  • Manual Autoclaves: Budget-friendly, but required tasks fall on your team—such as manually setting cycle parameters, monitoring timing, and unlocking the door at the end of the run.
  • Automatic Autoclaves: Automate nearly the entire workflow. They feature preset and customizable cycles accessible at the touch of a button. They also manage the drying process automatically by popping the door or operating an enclosed drying cycle.

While manual units work reliably on a budget, automatic units save staff time and reduce human error over the long run.

How Does It Log Data?

Accurate cycle record-keeping is required in most jurisdictions. Modern regulatory bodies and accrediting organizations require traceable proof of sterilization. Look for an autoclave that simplifies data logging—whether through physical receipt printers, USB data exports, or network connectivity for remote digital tracking. Automatic record-keeping saves hours of administrative work and keeps you audit-ready.

Does It Offer Helpful Accessories?

Don’t overlook the accessory options. Extra trays, specialized racks, or cassette stands help maximize internal chamber space and improve workflow. Optional printer attachments or external water treatment systems can also streamline operations. Investing in the right accessories upfront often yields major efficiency gains.

What Are the Maintenance and Warranty Like?

Preventative maintenance is critical to protecting your investment. Factor in the cost and ease of replacing routine consumables, such as door gaskets and bacterial filters. Look for a comprehensive warranty and buy from a trusted supplier known for fast, responsive technical support.

What is the Total Cost?

An autoclave is a long-term capital investment. Beyond the sticker price, consider the total cost of ownership over the machine’s lifespan:

  • Initial purchase price and necessary accessories
  • Installation or utility modification costs
  • Routine maintenance and replacement parts
  • Energy and water usage

Doing thorough financial research upfront ensures the unit fits both your current capital budget and your ongoing operational expenses.

Final Thoughts

Choosing the right autoclave comes down to balancing your practice’s specific needs—space, budget, workflow, and volume. Having a clear checklist eliminates guesswork and prevents the fatigue of sorting through endless specification sheets.

If you have questions about choosing your first autoclave or need tailored recommendations, Sterilizer Autoclave Solutions is here to help! Give us a call at 704-966-1650 Option 3 to speak directly with one of our expert technicians.


As always if you have any questions about this process or anything else please feel free to contact us and take advantage of our “FREE TECH SUPPORT.”

We also offer FREE VIRTUAL TECH SUPPORT to “See and Talk” with a “Real Time Live Technician” for any problems you may be in need of help with.

You can also use our “FREE MAINTENANCE PROGRAM”. Take the guesswork and worrying about what unit is due for maintenance and which maintenance cycle it is time for. We will keep track of all your autoclaves and let you know when it’s time for anything.


You can get started on your autoclave search from our website here!

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