Nominal Capacity vs. Actual Capacity: Why Does My Air Fryer's Capacity Direkt zum Inhalt

Nominal Capacity vs. Actual Capacity: Why Does My Air Fryer's Capacity Differ from What I Expected?

  In today's fast-paced life, air fryers have become a handy assistant in many household kitchens. However, many users discover a significant discrepancy between the nominal capacity and the actual...


In today's fast-paced life, air fryers have become a handy assistant in many household kitchens. However, many users discover a significant discrepancy between the nominal capacity and the actual usable capacity of their air fryers after purchase. This discrepancy often leads to an unsatisfactory user experience, leaving them confused and disappointed. As a company deeply involved in manufacturing air fryers, HYSapientia understands the prevalence and importance of this issue.


Why does this happen? What is the difference between nominal capacity and actual capacity? How can these issues be avoided when selecting and using an air fryer? Drawing from our extensive experience in producing and using air fryers, HYSapientia aims to delve into these questions, helping you make more informed purchasing decisions and optimize your user experience, ensuring a more seamless use of your air fryer.


The Difference Between Nominal Capacity and Actual Capacity

Defining Nominal Capacity and Actual Capacity

The nominal capacity of an air fryer is the volume indicated by the manufacturer on the product manual or packaging, usually measured in liters (L). This figure represents the maximum theoretical capacity based on the inner chamber's volume. The actual capacity, however, refers to the volume that users can effectively utilize during practical use. The actual capacity is often smaller than the nominal capacity because space needs to be left for hot air to circulate evenly during cooking, ensuring optimal cooking results.


Why There Is a Discrepancy

When designing air fryers, considerations for the circulation and flow of hot air necessitate leaving some space unoccupied, which makes this portion of the capacity unusable. Additionally, the internal structure of air fryers usually includes racks, baskets, and other accessories that occupy part of the space, thereby reducing the actual usable capacity compared to the nominal capacity. During cooking, food might expand or move around, requiring enough space to accommodate these changes; otherwise, cooking efficiency and quality might be compromised.


Common Differences Between Nominal and Actual Capacities

Understanding the difference between nominal capacity and actual capacity is crucial when selecting an air fryer. For instance, a 24L digital large air fryer oven is well-suited for large families or frequent gatherings. Despite having multiple racks and accessories inside, its actual usable capacity remains close to 23 liters, which can easily handle large volume cooking needs, ensuring each meal provides sufficient food for the entire family.


A 15L 8-in-1 digital air fryer oven, with a nominal capacity of 15 liters, is more suitable for medium-sized families. Its actual usable capacity is about 14 liters, designed to cook an entire chicken or multiple dishes simultaneously, making it ideal for family gatherings. Such air fryers often come with features like a rotisserie and dual-layer racks, enhancing the versatility and convenience of cooking.


For small families or individuals, a 6.5L 8-in-1 digital air fryer is an excellent choice. Though equipped with racks and baskets, it still offers a usable capacity of 6 liters. This model does not take up much kitchen space while meeting daily cooking needs, such as roasting chicken wings or vegetables, making it very suitable for busy urbanites. Users find that by arranging the food properly, they can fully utilize the capacity, achieving efficient cooking.


Observing Capacity in Actual Use

Many consumers tend to overestimate the actual capacity of their air fryers during the first use, leading to overcrowded food and compromised cooking results. It is recommended that users initially reduce the amount of food and gradually increase it to find the optimal usage. HYSapientia users generally believe that arranging the food properly and following the correct cooking sequence can significantly enhance the actual usable capacity.


How to Determine the Suitable Capacity of an Air Fryer

Choosing the Right Capacity Based on Family Size and Cooking Needs

Selecting an air fryer with a suitable capacity for your family is crucial. For small families (1-2 people), a 6.5-liter air fryer is appropriate as it meets daily needs without occupying too much kitchen space. Medium-sized families (3-4 people) can opt for a 15-liter air fryer, which is sufficient for family gatherings and daily cooking. For large families or gatherings, a 24-liter air fryer can meet large volume cooking needs, making it very suitable for family reunions or parties.


When buying an air fryer, consider the kitchen space and cooking requirements. Ensure that the selected air fryer does not take up excessive kitchen space while having the necessary features, such as a rotisserie and baking functions, to meet various cooking needs. Additionally, choosing a reputable brand that offers good after-sales service ensures a worry-free usage experience.


Testing and Verifying Air Fryer Capacity

Before purchasing or during use, some simple methods can be employed to test the actual capacity of an air fryer. First, specific quantities of food can be used for testing. For example, placing a certain amount of fries in the air fryer and observing its cooking effect and capacity utilization. If the food is too crowded, reduce the amount to find the best usage method.


Additionally, measuring tools can be used to measure the internal space of the air fryer, calculating the actual usable capacity. This method helps users more accurately understand the actual capacity of the air fryer, better planning their cooking.


Adjusting and Adapting to a Smaller Capacity Air Fryer

When purchasing a smaller capacity air fryer, users may need to make some adjustments to fully utilize its actual capacity and ensure even heating of the food for optimal cooking results.


Batch Cooking

When needing to cook a large amount of food, the simplest and most effective method is to do it in batches. For example, when cooking fries, they can be divided into several batches. This ensures that each batch is evenly heated and does not become overcrowded, affecting the cooking results. Although this may slightly increase the cooking time, it ensures that each batch of food achieves the ideal crispiness and texture.


Adjusting Food Cutting Method

The size and shape of food significantly impact the cooking results. When using a smaller capacity air fryer, cutting the food into appropriate sizes helps better utilize the internal space. For example, cutting potatoes into smaller chunks instead of placing them whole in the air fryer increases the food’s contact with hot air, ensuring even heating and allowing more food to fit, improving cooking efficiency.


Properly Arranging Food Position

When placing food in the air fryer, try to avoid overlapping and ensure that each piece has enough space to contact the hot air. Larger pieces of food can be placed at the bottom, with smaller pieces on top, saving space and ensuring even heating for all food items.


Using Dividers and Racks

Some air fryers come with dividers and racks that help better utilize the internal space. For instance, dividers can separate different types of food, allowing simultaneous cooking without interference. Racks can elevate food, ensuring better contact with hot air and improving cooking efficiency.


Flexibly Adjusting Cooking Time and Temperature

Smaller capacity air fryers may require adjustments to cooking time and temperature. Due to the smaller space, food may heat faster, so cooking time may need to be reduced, or temperature lowered to avoid overcooking. Checking the food occasionally during cooking ensures it achieves the best results.


Exploring and Experimenting

Each air fryer’s performance and characteristics may vary slightly. Users can find the best usage method through multiple trials and experiments. Trying different foods and cooking methods, noting the most effective time and temperature settings, provides a reference for future use.



The difference between the nominal capacity and actual capacity of an air fryer often leaves users confused and disappointed. However, by properly utilizing internal space, choosing the appropriate food cutting method, and selecting the suitable capacity based on family needs, users can significantly improve the actual usage of their air fryers. Although these adjustments may require some trial and adaptation, they ultimately lead to a better cooking experience.


Here, we strongly recommend our carefully designed series of air fryers. Whether for large capacity family gatherings or convenient daily use, our products meet your needs. Our air fryers excel in capacity design and functionality, providing an excellent user experience. Equipped with intelligent temperature control systems and multiple cooking modes, every dish achieves optimal results. The convenient interface and easy-to-clean design make cooking simpler and more enjoyable.


We hope HYSapientia's advice and methods help you better choose and use air fryers, achieving a healthy and delicious cooking experience. Choose our 10-in-1 air fryer now and enjoy the convenience and efficiency of cooking!


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