Both models share the same core engineering. Here is a breakdown of where they differ, and how to match each to a household's actual cooking needs.
ENSIEN's air fryer range currently consists of two models the EN AF 4.0L and the EN AF 5.5L. Both are built on the same 360° rapid air circulation platform and the same BIS-certified safety standard. The decision between them comes down to three factors: capacity, power delivery, and one feature exclusive to the larger unit.
A Shared Engineering Platform
Before comparing what's different, it's worth establishing what's identical. Both the EN AF 4.0L and EN AF 5.5L use the same feather-touch LED control panel, the same 7 preset cooking programs, and the same 80°C-200°C temperature range with a 1-60 minute timer and preheat function. Both include automatic cutoff as a safety feature, a non-stick dishwasher-safe basket, a 2-year manufacturer warranty, and BIS certification under IS 302 Part 2.
In other words: the cooking experience, how you operate the unit day to day is consistent across both models. The differences are about scale, not usability.
Where the Two Models Diverge
| Specification | EN AF 4.0L | EN AF 5.5L |
| Capacity | 4.0L | 5.5L |
| Power Rating | 1200W | 1350W |
| Viewing Window | No | Yes |
Capacity and Power
The EN AF 5.5L carries 1.5 additional liters of cooking capacity over the EN AF 4.0L, paired with a higher 1350W power rating to maintain consistent air circulation across the larger chamber. This combination is what allows the 5.5L to handle bigger batches a whole chicken, a full tray of vegetables, or multiple portions without extending cook times disproportionately.
The Viewing Window
The EN AF 5.5L is currently the only model in the range with a viewing window, allowing users to monitor food as it cooks without opening the basket and interrupting the air circulation cycle. For users who prefer visual confirmation over relying on timers alone, this is a meaningful point of difference.
The two models share an identical control experience. The choice is really a question of how much you cook, and how often you cook for others.
Which Model Fits Which Household
The EN AF 4.0L is the better fit for individuals, couples, or small households of up to three people, and for kitchens where counter space is limited. Daily cooking, reheating, snacks, small portions is where this model is most efficient.

The EN AF 5.5L is built for larger households, families, or anyone who cooks in batches or entertains regularly. The added capacity and power reduce the need to cook in multiple rounds, and the viewing window adds a layer of convenience for longer cooking sessions.

Making the Decision
Neither model is a "better" product in absolute terms they're sized for different situations. A useful way to decide: think about how many people you typically cook for in a single sitting, and whether counter or storage space is a constraint. If the answer points toward higher volume, the EN AF 5.5L's added capacity and power will save time. If daily use is smaller-scale, the EN AF 4.0L delivers the same core technology in a more compact footprint.