Ooni Fyra

Ooni Karu vs Fyra – Single Fuel or Multi-Fuel?

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Are you grappling with the decision of choosing between the Ooni Karu and Fyra? Let’s knead through this topic and find out which Ooni pizza oven bakes your perfect pizza.

Ooni has transformed our pizza parties with their line of portable outdoor pizza ovens. These nifty ovens can fire up a restaurant-quality pizza in just minutes – talk about a backyard revolution!

This article is your guide through the nitty-gritty of Ooni Karu vs Fyra, helping you decide which oven aligns with your pizza preferences and lifestyle. From their design elements and fuel types to their cooking prowess and price points, we’ve got it all covered!

Ooni Karu vs Fyra Overview

So, what sets the Ooni Karu and Fyra apart? Let’s slice into their main features:

  • Fuel Type: Versatility is Karu’s middle name, juggling wood, charcoal, or gas (with an extra attachment). The Fyra, meanwhile, is a wood pellet only.
  • Size & Weight: Planning a pizza picnic? The Fyra is lighter, but Karu offers more choices with 12 and 16-inch models.
  • Design: Both flaunt a stylish stainless steel exterior but differ in ways that affect their usability and performance.
  • Price Tag: Your wallet also gets a say here. Generally, the Fyra is more budget-friendly, but let’s delve deeper to see the full picture.

Ooni Fyra vs Karu Spec

Fyra 12Karu 16Karu 12GKaru 12
FuelWood PelletsWood, Charcoal & Propane Gas (with adaptor)Wood, Charcoal & Propane Gas (with adaptor)Wood, Charcoal & Propane Gas (with adaptor)
Pizza sizeUp to 12″Up to 16″Up to 12″Up to 12″
Unboxed size29.2 x 15.1 x 28.6″32 x 19.6 x 33″29.7 x 28.7 x 16.5″30 x 15 x 31″
Heat up time15 mins15 mins15 mins15 mins
Max. temperature950°F950°F950°F950°F
Gas NoYes, with gas burnerYes, with gas burnerYes, with gas burner
MaterialPowder-coated carbon steelPowder coated carbon steel & Brushed 304, 409, 430, Stainless steelPowder-coated carbon steelBrushed 430 stainless steel
Stone type0,4″ cordierite stone0,6″ cordierite stone0,6″ cordierite stone0,6″ cordierite stone
Stone size13 x 13″16.7 x 24.5″13 x 13″13 x 13″
Opening height3.34″5.71″3.86″3.89″
Fuel consumption2.5lbs for 10 pizzas4.9lbs for 10 pizzas2.2lbs for 10 pizzas3.3lbs for 10 pizzas
Gas consumption1.1 lb/hr0.74 lb/hr0.74 lb/hr

Ooni Fyra vs Karu – What’s The Difference?

When it comes to choosing between the Ooni Fyra and Karu, it’s all about understanding their unique characteristics. Both are wood-fired pizza ovens, but they cater to different culinary styles and preferences.


The design of each Ooni pizza oven model – the Fyra, Karu 12, Karu 12G, and Karu 16 – is a blend of aesthetics, functionality, and innovation. Let’s delve into their design specifics:

Ooni Fyra 12

  • Appearance: Compact and efficient, the Fyra features a streamlined look.
  • Dimensions: With a 13.2″ cooking surface, it’s perfect for standard-sized pizzas.
  • Materials & Components: It’s crafted from powder-coated carbon steel with a 0.4″ (1cm) thick cordierite stone baking board. This combination ensures even heat distribution and retention.

Ooni Karu 12

  • Appearance: The Karu 12 presents a sleek, brushed stainless steel body, giving it a modern touch.
  • Dimensions: Offers the same 13.2″ cooking surface but with a thicker 0.6″ (1.5cm) cordierite stone baking board, enhancing heat management.
  • Materials & Components: The stainless steel construction not only adds to its durability but also aids in efficient heat control.

Ooni Karu 12G

  • Appearance: Similar to the Karu 12 but with a distinct powder-coated carbon steel body.
  • Dimensions: Features a 13.27” x 13.27” cooking surface, accommodating a wide range of pizza sizes.
  • Materials & Components: The 0.6″ (15mm) thick cordierite stone baking board is a standard feature, ensuring optimal heat distribution.

Ooni Karu 16

  • Appearance: A combination of powder-coated carbon steel and stainless steel gives it a robust yet stylish look.
  • Dimensions: Boasts a larger 16.7 x 16.7″ cooking surface, perfect for bigger pizzas.
  • Materials & Components: Equipped with a 0.6″ thick (15mm) cordierite pizza stone, it excels in heat retention and even cooking.

Size Options

When it comes to choosing the right size for your pizza oven, Ooni offers a range of options to suit different needs and preferences. Here’s a breakdown of the size options for the Ooni Fyra and Karu models:

Ooni Fyra: The One-Size Wonder

  • Size Availability: The Fyra is available in a single size, capable of cooking pizzas up to 12 inches in diameter.
  • Pros: It’s a compact choice, ideal for those with limited space or who prefer simplicity.
  • Cons: The limitation to a 12-inch pizza might be restrictive for those looking to cook larger pizzas or multiple small ones simultaneously.

Ooni Karu: A Size for Every Need

  • Size Variations: The Karu series steps up the game with three size options.
    • Karu 12 & Karu 12G: Both can accommodate pizzas up to 12 inches, similar to the Fyra.
    • Karu 16: This larger model expands your cooking horizons with a capacity for 16-inch pizzas.
  • Pros: The range of sizes in the Karu series means more versatility and capacity. Whether you’re cooking for a small group or a large gathering, there’s a Karu to fit the bill.
  • Cons: With increased size comes the need for more space. The larger Karu models, especially the Karu 16, are heavier and require more storage space. Additionally, a larger size usually means a higher price tag.


The weight of your pizza oven plays a crucial role in its portability, ease of use, and stability. Let’s compare the weights of the Ooni Fyra and the various Karu models:

  • Ooni Fyra: This model is the lightest, weighing in at 22 lbs. Its lightweight nature makes it a breeze to move around, perfect for those who love to cook in different outdoor settings.
  • Ooni Karu 12: Slightly heavier than the Fyra, the Karu 12 weighs 26.5 lbs. This additional weight contributes to more stability during cooking while still maintaining reasonable portability.
  • Ooni Karu 12G: Weighing 34.17 lbs, the 12G version offers a more substantial presence, which can impact its ease of transportation but adds to the stability during use.
  • Ooni Karu 16: The heaviest of the lot, the Karu 16 tips the scales at 62.6 lbs. This weight makes it more suited for semi-permanent placements rather than frequent moving.

Fuel Options

The choice of fuel in a pizza oven significantly influences the taste, convenience, and cost of your pizza-making experience. Let’s explore the fuel options for the Ooni Fyra and Karu models and understand their impact.

Wood Pellets vs Wood/Charcoal

  • Wood Pellets: Used in the Ooni Fyra, these are small, compact, and provide a consistent heat source.
  • Wood/Charcoal: The Ooni Karu models offer the flexibility to use either wood or charcoal, giving you more control over the flavor profile.

Advantages and Disadvantages of Wood Pellets

  • Advantages:
    • Easy Availability: Wood pellets are widely available and easy to store.
    • Consistent Heat: They offer a steady heat source, crucial for even cooking.
    • Less Smoke: Ideal for environments where excessive smoke might be a concern.
  • Disadvantages:
    • Higher Price: Pellets can be more expensive than traditional wood or charcoal.
    • Subtler Flavor: They might not impart the same rich, smoky flavor as wood or charcoal.

Advantages and Disadvantages of Wood/Charcoal

  • Advantages:
    • Authentic Taste: There’s something about the flavor from wood or charcoal that’s hard to beat.
    • Lower Cost: Generally, wood and charcoal are more affordable than pellets.
    • Flexibility: Allows for experimenting with different woods for varied flavors.
  • Disadvantages:
    • More Effort: Requires more attention to maintain consistent temperature.
    • Variability: Can lead to fluctuations in heat, affecting cooking consistency.

Gas as an Alternative Fuel Source

  • The Ooni Karu series offers an additional option – gas, through an optional gas burner attachment.
  • Advantages:
    • Quick Ignition: Gas ovens heat up rapidly, saving time.
    • Precise Temperature Control: Allows for consistent cooking results.
    • Clean and Convenient: Gas is easy to use and leaves less residue.
  • Disadvantages:
    • Less Wood-Fired Flavor: Gas doesn’t impart the same smoky essence.
    • Additional Cost: The gas attachment and fuel add extra expenses.

Temperature Regulation

Both the Ooni Fyra and Karu models are capable of reaching temperatures over 900°F in less than 15 minutes, an ideal condition for cooking pizzas in about 60 seconds.

  • Fuel Source, Airflow, and Door: The temperature in each oven is regulated by a combination of the fuel source, airflow management, and the door’s design.
  • Fyra’s Gravity-Fed Hopper: It automatically feeds wood pellets into the oven, maintaining a consistent temperature for up to 20 minutes without needing a refill. This feature is a major convenience, especially for extended cooking sessions.
  • Karu’s Manual Fuel Tray: Requires more hands-on monitoring and refilling with wood or charcoal. While this means more effort, it also offers greater control over the cooking temperature, allowing for a more tailored pizza cooking experience.
  • Gas Burner Attachment for Karu: Features a dial for precise temperature adjustments. This attachment simplifies temperature control, provides consistent heat, and is easy to use, though it trades off the authentic wood-fired flavor.


When considering an Ooni pizza oven, price plays a significant role. The cost of each oven varies based on its size, fuel type, and any additional accessories. Here’s a breakdown of the current prices and what you get for your money:

  • Ooni Fyra 12: Priced at $349, the Fyra is a compact and efficient option, perfect for those who value simplicity and ease of use with wood pellets.
  • Ooni Karu 12: At $299, the Karu 12 is surprisingly the most budget-friendly, offering the versatility of using wood, charcoal, or gas (with an attachment).
  • Ooni Karu 12G: This model comes in at $429, reflecting its additional gas functionality built into the design.
  • Ooni Karu 16: The largest of the lot, the Karu 16 is priced at $799, catering to those who need more cooking space and prefer a more robust set of features.
  • Gas Burner Attachment: The price for this accessory varies, but it’s an additional cost for those who opt for gas cooking with the Karu models.

Comparing Value and Quality

When comparing these ovens, it’s important to consider more than just the price. Here’s what each model offers:

  • Ooni Fyra: It provides great value for those who prefer the convenience of wood pellets and a lighter, more portable oven.
  • Ooni Karu 12: This model is an excellent choice for its price, offering flexibility in fuel choice and a balance of size and portability.
  • Ooni Karu 12G: The increased price accounts for the built-in gas functionality, appealing to those who prioritize ease and consistent temperature control.
  • Ooni Karu 16: With its higher price tag, this model is ideal for serious pizza enthusiasts or those who frequently entertain larger groups. The larger size and versatile fuel options justify the investment.
  • Gas Burner Attachment: For those who choose the Karu, this attachment adds convenience and precision, but at an extra cost.

Ooni Fyra vs Karu: Verdict

After delving into the details of the Ooni Karu and Fyra, it’s clear that each oven caters to different pizza-making preferences and lifestyles. Here’s a summary of their key differences and a guide to help you choose the one that best suits your needs.

Key Differences

  • Fuel Type: The Fyra is exclusively a wood pellet oven, offering ease and consistency, while the Karu models provide versatility with wood, charcoal, and an optional gas burner attachment.
  • Size and Portability: The Fyra is compact and lighter, ideal for small spaces and easy mobility. The Karu series, especially the Karu 16, offers larger cooking surfaces but at the expense of increased weight and size.
  • Temperature Control: The Fyra automates temperature regulation with its gravity-fed hopper, while the Karu requires more manual intervention, especially with wood or charcoal.
  • Price: The Karu 12 stands out as the most budget-friendly, whereas the Fyra, Karu 12G, and Karu 16 scale up in price with added features and size.


  • For the Casual Pizza Maker: If you’re new to pizza making, the Ooni Fyra is a great choice.
  • For the Versatile Home Chef: If you enjoy experimenting with different cooking styles and flavors, the Ooni Karu 12 is your match. It offers the flexibility of multiple fuel types at a reasonable price.
  • For the Entertainer or Enthusiast: If you often host pizza parties or are passionate about perfecting your pizza craft, the Ooni Karu 16 is worth the investment. Its larger size and fuel versatility cater to more ambitious pizza making.
  • For the Convenience Seeker: If you value ease and consistency, and are willing to invest a bit more, the Ooni Karu 12G with its gas functionality offers a balance of convenience and quality.

Best Overall

Ooni Karu 16


Cooks pizza in 60 seconds

Multi-fuel – gas and wood

Large cooking surface

Premium price

Best Value for Money

Ooni Karu 12


Cooks pizza in 60 seconds

Multi-fuel – gas and wood

Smaller cooking surface

Best Value for Convenience

Ooni Karu 12G


Cooks pizza in 60 seconds

Multi-fuel – gas and wood

Smaller cooking surface

Best for Portability

Ooni Fyra 12


Cooks pizza in 60 seconds

Multi-fuel – gas and wood

Smaller cooking surface

Wood pellets only

Smaller cooking surface

FAQs – Ooni Karu vs Fyra

Can I use gas as a fuel source in both the Ooni Karu and Fyra?

Only the Ooni Karu models are compatible with an optional gas burner attachment. The Fyra is designed exclusively for wood pellets and does not support gas.

What is the maximum pizza size I can cook in these ovens?

The Ooni Fyra and Karu 12 models can cook pizzas up to 12 inches in diameter. The Karu 16, however, can handle larger pizzas up to 16 inches.

How portable are the Ooni Karu and Fyra ovens?

The Ooni Fyra is lighter and more portable, making it great for travel. The Karu models are heavier, with the Karu 16 being the least portable due to its size and weight.

How long does it take for these ovens to reach cooking temperature?

Both the Ooni Karu and Fyra can reach temperatures over 900°F in 15 minutes or less, ideal for quick pizza cooking.

Are these ovens suitable for beginners in pizza making?

Absolutely. The Ooni Fyra is particularly beginner-friendly due to its ease of use. The Karu models, while offering more versatility, are still accessible to beginners who are willing to experiment a bit more.

Photo of author


Jeff is a pizza enthusiast with over 15 years of experience of working in pizzerias.