| Product | Rating | Price |
|---|---|---|
 1. Instant Pot Vortex Plus ClearCook 6 Qt Air Fryer Instant Pot Best Overall | Check Price | |
| 2. Instant Pot Vortex Plus XL ClearCook 8 Qt Air Fryer Instant Pot Best Large Capacity with Window | Check Price | |
 3. Ninja Crispi Pro Glass Air Fryer 6 Qt (AS101CY) Ninja Best Premium Glass Air Fryer | Check Price | |
| 4. Ninja Crispi Glass Air Fryer 4 Qt (FN101GY) Ninja Best Compact Glass Air Fryer | Check Price | |
 5. Breville BOV900BSS Smart Oven Air Fryer Pro Breville Best Oven-Style Viewing Window | Check Price |
Detailed Reviews
Instant Pot
1. Instant Pot Vortex Plus ClearCook 6 Qt Air Fryer
Pros
- ClearCook window lets you monitor food without opening the basket
- 6-in-1 functions: crisps, broils, roasts, dehydrates, bakes, and reheats
- Customizable program option for precise time and temperature control
Cons
- 6-quart capacity may not suit households regularly cooking for five or more
- Window accumulates grease over time and requires cleaning to stay clear
Instant Pot's ClearCook window is the main differentiator here — you can check doneness without opening the basket and releasing heat. Six cooking modes span the full range from crisping to dehydrating, and a customizable program lets you dial in your preferred settings. A practical pick for households that want convenient food monitoring alongside genuine multi-mode versatility.
Instant Pot
2. Instant Pot Vortex Plus XL ClearCook 8 Qt Air Fryer
Pros
- ClearCook window and clear panels for hands-free food monitoring
- 8-in-1 functions including custom program options
- 8-quart capacity for larger family meals
Cons
- Larger and heavier than the 6 Qt model
- Requires more counter and storage space than compact air fryers
The XL ClearCook expands the 6 Qt model's formula with an 8-quart interior and two additional cooking modes. ClearCook windows and custom program options carry over from the smaller sibling. The larger cavity is the main reason to choose it — if you regularly cook four or more servings per batch, the added capacity pays off quickly.
Ninja
3. Ninja Crispi Pro Glass Air Fryer 6 Qt (AS101CY)
Pros
- 1800W power with a 450°F maximum temperature for high-heat crisping
- 6-in-1 functions: max crisp, air fry, bake, roast, recrisp, and dehydrate
- Includes 2.5-quart inner containers for organized batch cooking
Cons
- Higher price than the compact Ninja Crispi 4 Qt
- Glass construction is heavier than plastic-body basket air fryers
The Ninja Crispi Pro's glass-body design is the standout feature — the transparent cooking vessel lets you monitor food throughout the entire cook cycle. At 1800W and up to 450°F, it reaches high crisping heat quickly. The included 2.5-quart containers help organize smaller items within the 6-quart cooking space.
Ninja
4. Ninja Crispi Glass Air Fryer 4 Qt (FN101GY)
Pros
- PFAS-free glass construction with no fluoropolymer coatings
- 450°F maximum temperature in a compact 4-quart footprint
- Includes both 4 Qt and 6 Cup containers for flexible batch sizes
Cons
- 4-in-1 function set (max crisp, bake, air fry, recrisp) is narrower than larger models
- 4-quart capacity is not suited for family-sized meals
The compact Ninja Crispi suits one- or two-person households that want glass-body air frying without a large countertop footprint. PFAS-free glass construction means no fluoropolymer coatings on the cooking surface. At 4 quarts with 6-cup containers included, it handles individual portions and small-batch cooking efficiently.
Breville
5. Breville BOV900BSS Smart Oven Air Fryer Pro
Pros
- Oven-style door with a built-in glass window for continuous food monitoring
- 13 cooking functions in a countertop convection oven format
- Convection heat Breville rates at up to 30% faster than conventional baking
Cons
- Larger countertop footprint than any basket-style fryer in this list
- Higher price than the basket and glass-body models here
The Breville BOV900BSS approaches the viewing window differently than the basket fryers here — its oven-style glass door provides continuous visibility throughout the cook cycle without any special window technology. With 13 cooking functions and convection heat, it suits households that want food monitoring alongside genuine multi-function versatility in a countertop oven format.
How We Picked
We identified candidates by focusing on models where a viewing window is a core design feature rather than an incidental add-on. That narrowed the field to purpose-built ClearCook basket fryers from Instant Pot, glass-body fryers from Ninja’s Crispi line, and oven-style countertop fryers with integrated glass doors. For each model, we reviewed manufacturer specifications, confirmed function counts and capacity figures against official product pages, and examined verified owner feedback for patterns related to window clarity, ease of cleaning, and cooking performance over time. Independent kitchen testing coverage informed our assessment of convection power and temperature accuracy. No products were physically evaluated by our team — our process relies on publicly available specifications, owner experience data, and independent expert analysis. We weighted viewing functionality alongside cooking performance, since a window that fogs immediately on first use offers no real benefit regardless of how well the fryer cooks.
Buying Guide
Window Type and What You Can Actually See
Not all viewing windows work the same way. The Instant Pot ClearCook models integrate a window panel into the basket drawer, positioned so you can see the food from above without pulling the basket open. The Ninja Crispi line takes a different approach — the cooking vessel itself is made of glass, making the entire body transparent from the side. The Breville BOV900BSS uses a standard oven-style glass door. Each design affects what you see: a top-view window shows browning progress directly; a side-view glass vessel is useful for monitoring thicker cuts; an oven door provides an angle view across the whole interior.
Capacity for Your Cooking Volume
Six quarts — shared by the Instant Pot Vortex Plus ClearCook 6 Qt and the Ninja Crispi Pro — handles two to three adult portions comfortably for most recipes. The Instant Pot Vortex Plus XL steps up to 8 quarts for four or more servings per batch. The Ninja Crispi 4 Qt is well-suited to one or two people who want a compact footprint over maximum volume. Matching capacity to your actual cooking frequency matters — buying a larger fryer than you regularly fill means longer preheat times, more surface area to clean, and a bigger appliance taking up counter space every day.
Cooking Functions and Maximum Temperature
A higher function count expands what the fryer handles beyond basic crisping. Both Instant Pot ClearCook models and the Ninja Crispi Pro cover six functions; the Instant Pot XL extends to eight with custom program options. The compact Ninja Crispi handles four core modes: max crisp, bake, air fry, and recrisp. All Ninja Crispi models reach 450°F, which is useful for high-heat applications like chicken skin or thick-cut fries. The Breville BOV900BSS tops the function count at 13, making it the most versatile pick here if breadth of cooking tasks matters more than the glass-body viewing approach.
Build Materials and Safety
Two distinct material philosophies appear in this list. The Instant Pot ClearCook models use a conventional basket structure with a window panel, while the Ninja Crispi line centers the entire cooking vessel on glass — specifically PFAS-free glass in the 4 Qt model. PFAS-free construction avoids fluoropolymer coatings on cooking surfaces, which is the primary reason buyers seek it out. The Breville BOV900BSS uses a Brushed Stainless Steel exterior. Glass cooking vessels require care to avoid impact damage, but they do not degrade with high heat the way some coated surfaces can over extended use.
Cleaning the Viewing Window
A viewing window is only useful when it stays clear, and every glass surface accumulates grease and steam with regular cooking. For basket-style models like the ClearCook line, the window panel is accessible when the basket is extended and wipes down easily with a damp cloth after each cook. Glass-body fryers like the Ninja Crispi allow you to clean the outer vessel surface directly. Regardless of model, cleaning after every greasy cook — especially chicken wings or breaded items — prevents buildup from hardening and becoming harder to remove over time.
Tips for Keeping Your Window Air Fryer Working Well
A few habits preserve both the window clarity and the performance of viewing-window air fryers over time. Avoid abrasive scrubbers or scouring pads on glass cooking vessels or window panels — scratches reduce visibility permanently and cannot be reversed. Use a soft cloth or non-abrasive sponge with mild dish soap instead, and clean the glass after every greasy session before residue hardens. Pat food dry before loading, particularly proteins and breaded items — moisture vapor from wet food fogs the window faster and produces softer, less crispy surfaces. For longer cook cycles, check the window at the midpoint rather than monitoring it from start to finish; steam buildup during active cooking is normal and temporarily reduces visibility even on a spotlessly clean surface. If you are still deciding between a basket-style fryer with a window and a full oven-style model with a door window, our overview of air fryers for all cooking styles walks through both approaches.