Kamado Joe Classic II vs Classic III: Which Grill Is Right For You?

Choosing between the Kamado Joe Classic II and Classic III can feel overwhelming. Both are exceptional ceramic grills that deliver outstanding results, but they have distinct differences that may make one better suited to your outdoor cooking style. In this comprehensive guide, we'll walk you through everything you need to know to make an informed decision.

Understanding the Kamado Joe Classic Range

Before diving into the specifics, it's helpful to understand where these models fit within Kamado Joe's lineup. The brand offers grills in three series (I, II, and III) across different sizes:

• Classic Joe: 18-inch diameter, ideal for typical households and gardens
• Big Joe: 24-inch diameter, perfect for larger families or entertaining
• Joe Junior: 13.5-inch diameter, designed for portability

Both the Classic II and Classic III are 18-inch models, making them the most popular choice for home use. They offer ample cooking space without dominating your patio or garden.

Key Differences Between Classic II and Classic III

Now let's explore what sets these two models apart and what those differences mean for your cooking.

 

The SloRoller Hyperbolic Smoke Chamber

What it is: The Classic III's headline feature is the revolutionary SloRoller, a three-part cast aluminium smoking chamber designed using Harvard scientific principles.

How it works: The hyperbolic shape creates cyclonic airflow patterns that circulate smoke and heat in rolling waves around your food. This results in up to 20 times more smoke contact than traditional setups.

Practical implications: If you're passionate about low-and-slow smoking—brisket, ribs, pulled pork—the SloRoller delivers noticeably deeper smoke flavour and more even cooking. The smoke penetrates the meat more effectively, giving you authentic barbecue results.

Important limitation: The SloRoller is designed for temperatures up to 260°C (500°F). Above this, the Teflon coating can be damaged. For high-heat grilling, you'll swap it out for the heat deflector plates.

Classic II alternative: The Classic II uses traditional ceramic heat deflector plates for indirect cooking and smoking. They work excellently, just without the enhanced smoke circulation. You can also purchase the SloRoller separately if you later decide you want this feature.

 

The Divide & Conquer Flexible Cooking System

Classic II: Features a 2-tier system with 460 square centimetres (250 square inches) of cooking space.

Classic III: Upgraded to a 3-tier system, providing more height options and greater versatility.

Practical implications: The extra tier in the Classic III gives you more flexibility when cooking multiple dishes simultaneously at different heights. This is particularly useful when using accessories like rotisseries, where the additional clearance over the charcoal makes a real difference. The taller ceramic dome (7cm higher than the Classic II) creates this extra space.

However, it's worth noting that you can only maximise the cooking surface when not using the SloRoller—when it's in place, you'll have four half-moon grate positions available rather than six.

 

The Charcoal Management System

Classic II: Uses a traditional charcoal grate at the bottom of the firebox.

Classic III: Features a stainless steel charcoal basket (also called a "Kick Ash Basket").

Practical implications: The charcoal basket provides several real-world benefits. It lifts the charcoal slightly, improving airflow for better combustion and temperature control. Cleaning becomes significantly easier—simply lift the basket and give it a shake to drop ash and small charcoal pieces into the drawer below.

The basket also includes a divider, allowing you to create two-zone cooking (direct and indirect heat) without using the half-moon heat deflectors. This is brilliant for cooking items that need different heat levels simultaneously.

The Classic II can be upgraded with a charcoal basket purchased separately if this feature appeals to you.

 

The Cart and Build Quality

Classic II: Heavy-duty rolling cast iron cart with locking wheels. Functional and stable, though the frame has some flex when closing the heavy lid.

Classic III: Premium heavy-duty powder-coated galvanised steel cart with more robust, thicker legs. The stiffer frame eliminates flex but may not adapt as well to uneven surfaces. Includes a useful storage shelf between the legs (perfect for storing your SloRoller and accessories) and integrated cable management slots for temperature probes.

Practical implications: The Classic III cart feels more substantial and luxurious. The storage shelf keeps accessories organised and protected. If you use digital temperature controllers, the cable management is a thoughtful touch. However, on slightly uneven paving, the Classic II's slight flex can actually help it sit more stably.

 

The Wheels

Classic II: Smaller diameter wheels that can struggle on uneven surfaces or when moving between different paving levels.

Classic III: Larger 10cm wheels that roll much more smoothly across decking, gravel, grass, or uneven patio surfaces.

Practical implications: If you plan to move your grill regularly or your garden has varied surfaces, the Classic III wheels make life noticeably easier.

 

The Side Shelves

Classic II: Originally HDPE plastic shelves (now upgraded to aluminium on newer models). The plastic versions were durable but could melt if hot grill grates were placed directly on them.

Classic III: Powder-coated aluminium shelves from the start. Heat-resistant, more durable, and maintenance-free with an attractive finish.

Practical implications: The aluminium shelves on the Classic III won't melt, scratch less easily, and look more premium. If purchasing a new Classic II, verify it includes the aluminium shelves rather than the older plastic ones.

Price Difference and Value Consideration

The Classic III typically commands a premium over the Classic II. The price difference reflects the additional features: the SloRoller system, upgraded cart, larger wheels, third cooking tier, and charcoal basket.

Is it worth it? This depends on your priorities:

• If you're passionate about smoking and want the ultimate smoke flavour, the SloRoller justifies the investment
• If you value premium build quality and modern conveniences (better wheels, storage shelf, cable management), the Classic III delivers
• If you're primarily interested in grilling and occasional smoking, the Classic II offers exceptional performance at a lower price point

Remember, many Classic III features can be added to the Classic II separately (charcoal basket, SloRoller), though buying them individually will likely cost more than the price difference between models.

Which One Should You Choose?

Choose the Classic II if:

• You're new to kamado grilling and want to start with excellent quality at a more accessible price
• Your focus is primarily on high-heat grilling with occasional smoking
• You prefer a simpler setup with fewer components to manage
• Budget is a primary consideration
• You value proven, established technology

View the Kamado Joe Classic II

Choose the Classic III if:

• You're passionate about smoking and want the best possible results
• You regularly cook multiple items simultaneously at different temperatures
• You appreciate premium build quality and the latest innovations
• You want the convenience features (storage shelf, better wheels, cable management)
• You plan to use numerous accessories and want maximum flexibility
• You're making a long-term investment in your outdoor cooking setup

View the Kamado Joe Classic III

Essential Accessories to Consider

Whichever model you choose, these accessories will enhance your Kamado Joe experience:

For Pizza Enthusiasts

• DoJoe Pizza Oven Insert: Transforms your Classic Joe into a dedicated pizza oven, maintaining temperatures between 200-370°C for authentic results
• Pizza Stone for Classic Joe: A more affordable option for excellent pizza results

For Rotisserie Cooking

• JoeTisserie for Classic: Self-basting rotisserie system perfect for whole chickens, lamb legs, or pork roasts

Cooking Surfaces

• Cast Iron Half-Moon Griddle: Ideal for breakfast, fajitas, or delicate items
• Cast Iron Cooking Grate: Superior heat retention for perfect sear marks
• Stainless Steel Cooking Grate: Durable alternative for everyday grilling
• Soapstone for Classic Joe: Even heat distribution for pizzas, breads, and delicate fish

Temperature Management

• Heat Deflector Plates: Essential for indirect cooking (included with both models)
• Flexible Cooking Rack for Classic: Expand your cooking configurations
• Grill Expander: Add additional cooking levels

Fuel and Flavour

• Kamado Joe Big Block XL Lump Charcoal: Premium charcoal produces less ash and burns longer
• Wood Chunks: Available in Hickory, Apple, Oak, Maple, and Pecan for distinctive smoke flavours

Protection

• Kamado Joe Classic Cover: Weather-resistant protection to keep your investment in pristine condition
• Classic Stand Alone Cover: For grills without carts

Cleaning and Maintenance

• Charcoal Basket for Classic (for Classic II owners): Upgrade to easier ash management
• Accessory Rack: Keep your tools organised

Final Thoughts

Both the Kamado Joe Classic II and Classic III are exceptional grills that will serve you well for years. The Classic II remains a fantastic choice, offering the core kamado experience that has made the brand famous. The Classic III represents the evolution of that excellence, incorporating user feedback and technological advances.

Your decision should be guided by how you plan to use your grill. If smoking is your passion and you want every advantage, the Classic III's SloRoller and enhanced features justify the premium. If you're looking for outstanding all-round performance with excellent value, the Classic II won't disappoint.

Whatever you choose, you're investing in a grill that can smoke, sear, roast, bake, and grill with precision and versatility. Welcome to the Kamado Joe family—your outdoor cooking is about to reach new heights.

Frequently Asked Questions

Can I add the SloRoller to a Classic II later?
Yes, the SloRoller is available as a separate accessory and is compatible with Classic II models. However, purchasing it separately typically costs more than the price difference between the Classic II and III.

Will accessories designed for the Classic II fit the Classic III?
Yes, both models share the same 18-inch diameter, so all Classic Joe accessories are interchangeable between Series I, II, and III models.

How long does the ceramic on these grills last?
With proper care, the ceramic shell should last for decades. Kamado Joe offers a comprehensive warranty, and the ceramic is designed to withstand countless heating and cooling cycles.

Can I use the Classic III without the SloRoller?
Absolutely. The Classic III functions perfectly with the traditional heat deflector plates for indirect cooking. You'll swap between the SloRoller (for low-and-slow smoking) and deflectors (for higher-heat indirect cooking or when you need maximum cooking space).

Which model is better for beginners?
Both are excellent for beginners. The Classic II offers a slightly simpler setup with fewer components to learn. However, the Classic III's features don't add significant complexity, and you'll appreciate them as your skills develop.

How much charcoal do these grills use?
Kamado grills are exceptionally fuel-efficient. A full load of lump charcoal can last for multiple cooking sessions, and for low-and-slow smoking, you might use only a few kilograms for a 12-hour cook.

Do I need to season my Kamado Joe before first use?
Yes, it's recommended to do a "break-in" cook at around 120°C for an hour with just charcoal (no food) to cure the gaskets and ceramics properly.

What's the difference between the Classic and Big Joe?
Size. The Classic has an 18-inch diameter grate (460 sq cm cooking space), while the Big Joe offers 24 inches (793 sq cm). Everything else is proportionally similar. The Classic suits most households, while the Big Joe is ideal for larger families or frequent entertaining.

Can these grills be left outside year-round?
Yes, the ceramic construction handles all weather conditions. However, using a waterproof cover will protect the metal components (hinges, bands, cart) and extend their lifespan, especially in the UK and Irish climate.

Is the Classic III worth the extra cost?
If you're serious about smoking or want the latest features and premium build quality, yes. If you're primarily grilling with occasional smoking, the Classic II offers tremendous value. Consider how you'll use the grill most often to guide your decision.

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Ready to start your Kamado Joe journey? Browse our full range of Kamado Joe grills and accessories at Creative Gardens. Visit us at our centres in Donaghadee, Bushmills, Galgorm, or Logwood, where our expert team can help you choose the perfect grill and accessories for your needs. Contact us today or explore our outdoor cooking collection online.