How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 10 min read · Independent comparison
• Instant Pot 4Qt — best for small kitchens and one-to-four-person households; pick this if you want a genuine 6-in-1 appliance with 1500 watts, EvenCrisp Technology, and a ClearCook window rather than a single-purpose gadget.
• AKSDTH 2 — best for round-basket owners who hate scrubbing; pick this if you own a 3–5 qt air fryer and want two BPA-free silicone liners that are dishwasher safe and rated to 450 °F.
• Umilife Cutting board Compatible — best for Breville Smart Oven Air Fryer owners short on counter space; pick this if you want a bamboo board with heat-resistant silicone feet to reclaim the space above your oven.
• Redfly 2 — best for square-basket air fryers in the 4–5 qt range; pick this if you want two dishwasher-safe silicone liners with a 7-inch bottom diameter and a 428 °F heat rating.
This is an air fryer first, but the "6-in-1" label is not marketing fluff. It air fries, bakes, roasts, broils, dehydrates, and reheats, and Instant Pot notes there is little to no preheating time involved. That last part matters more than people expect: with a lot of air fryers you stand around waiting for the unit to come up to temperature before food even goes in. The 4-quart basket is the other headline number. That is roughly enough for up to four servings, which lands it squarely in the sweet spot for students, singles, couples, and small families.
The feature I would actually use every day is the ClearCook window paired with an internal light. If you have ever owned an air fryer without a window, you know the drill — you pull the basket out to check on food, heat escapes, and cooking time stretches. Being able to look in without opening anything keeps the cook cycle honest and makes it much easier to catch food before it goes past golden. On the crisp side, EvenCrisp Technology is the mechanism behind that deep-fried crunch with a fraction of the oil, which is the whole reason most people buy an air fryer in the first place.
The specs are reassuring for a compact unit: 1500 watts on standard 120 V, UL and ULC listed, with overheat protection and auto shutoff built in. Temperature range runs from a low of 90 °C up to 400 °F, so dehydrating fruit or reheating leftovers is genuinely on the table. Controls are push-button with custom program options, which I read as "you can save your own settings" rather than fiddle with dials every time. The basket is non-stick and dishwasher safe, and the body measures about 12.87 by 10.12 by 10.24 inches — small enough to live on the counter without eating the whole thing. It ships with the air fryer body, basket, and cooking tray.
The trade-off is capacity and material. Four quarts is not a big-air-fryer number, so if you are cooking for five or more, or you like to batch-cook a full sheet of vegetables at once, you will be doing it in rounds. And the exterior is plastic, which is worth knowing if you specifically want a stainless-steel look on your counter. In my opinion, neither of those matters much for the buyer this is aimed at — the person cooking two to four portions who wants one appliance to cover air frying, baking, roasting, broiling, dehydrating, and reheating.
AKSDTH 2
This is not an air fryer — it is the accessory that makes you actually want to use the one you own. You get two reusable silicone pot liners in red and blue, sized to fit round baskets in the 3 qt to 5 qt range, including 4, 4.2, 4.5, and 4.8 qt models. The top measures 8 inches across and the bottom 6.75 inches. The pitch is simple and, in my opinion, correct: if cleanup is a chore, you skip air frying. Drop one of these in, cook, and the basket itself stays largely free of grease and residue.
The comparison AKSDTH makes is against disposable parchment paper liners, and it is a fair one on safety grounds. Parchment is flammable, and loose paper near a hot element is a real hazard. Silicone sidesteps that entirely, and since you reuse it, it is the kind of accessory that stops being a purchase and starts being part of the routine. Beyond the air fryer, these work in a microwave, oven, skillet, or steamer, and the description notes they can double as a fruit plate. That versatility is why I would recommend them to anyone with a round 3–5 qt basket.
The honest trade-off: these are round, so they will not sit flush in a square basket, and they are sized to a specific range — if your air fryer is outside 3–5 qt, skip them. The manufacturer also lists the item weight at 0.2 g, which is obviously a listing quirk rather than the real weight of a two-piece silicone set; I would not read anything into it either way. Treat this as a consumable-style accessory, not a permanent fixture, and it does its job well.
This is the odd one out in a good way. It is not an air fryer or an air fryer liner — it is a bamboo cutting board designed to sit on top of your countertop oven, and it is specifically built to be compatible with the Breville BOV800XL, BOV845BSS, and BOV860BSS Smart Oven Air Fryer models. The idea is that the flat top of your oven is wasted real estate. Umilife turns it into counter space and workspace at the same time.
The engineering detail that makes it work is the feet. Four heat-resistant silicone feet raise the board about 0.4 inches off the oven surface. That gap does two things: it creates an airflow channel so heat does not get trapped against the oven and damage it, and it keeps the board from sliding around. The bamboo itself is heat resistant, and Umilife states it will not warp or crack. It is a solid board with no engraved text or logo, which keeps it clean-looking, and the side handles make it easy to grab whether you are using it as a cutting surface or as a serving tray for cookies or bread coming straight off the oven.
So who is this for? Someone who owns one of those Breville Smart Oven Air Fryer models and is short on counter space. The trade-off is exactly the specificity that makes it work: it is sized and shaped for a particular family of ovens, it is not compatible with every air fryer or toaster oven out there, and it does not cook anything. If you want a place to set hot trays, store oven mitts and liners, and gain a cutting surface above your oven, it earns its spot. If you have a different oven, measure first or look elsewhere.
Redfly 2
Redfly's two-pack is the square-basket counterpart to the AKSDTH liners, and the shape is the whole reason it exists. Square liners fit square baskets properly — no curled corners, no wasted space, no liner folding in on your food. These are built for 4–5 qt square baskets and are listed as compatible with Gourmia, Cosori, Power XL, and Ninja air fryers, among others. You get two liners in gray and black.
The measurements are unusually well documented, which I appreciate. Bottom diameter is 7 inches, top diameter is 7.9 inches, height is 2.1 inches, and the material is 0.12 inches thick. Redfly explicitly tells you to measure your basket before buying, and I would second that — a liner that is too big will not seat, and one that is too small defeats the purpose. Like the AKSDTH set, these are made of 100% BPA-free food-grade silicone, non-toxic and non-stick, scratch resistant, non-deformable, and colorfast. Heat resistance tops out at 428 °F, which is plenty for air frying, and the raised lines on the base serve the same heat-circulation purpose.
Two usage notes from the manufacturer are worth repeating because they cause most of the complaints people have with silicone liners. First, do not leave the liner in the basket during preheating — it can get pulled up or distorted by the airflow. Second, put food in it before you cook; an empty liner can be lifted by the heat. Redfly also mentions a slight odor when the liner is brand new, which is normal and typically goes away after one wash. Cleaning is dishwasher safe, with a warm-water soak suggested if you hand wash.
The trade-off is fit specificity and the learning curve. If you own a round basket, these are the wrong shape for you. And if you ignore the preheat guidance, you will have a frustrating first cook. The upside is a liner that sits flat, keeps grease and residue out of the basket, and replaces flammable parchment paper with something reusable. For square 4–5 qt air fryer owners, I would recommend it.
How We Picked
We compared the published specifications and features for each product — capacity, wattage, materials, heat resistance, dimensions, cleaning requirements, and stated compatibility — and ranked them against how people actually use air fryers and their accessories. This ranking is our independent editorial opinion, based on those specs alone. No brand paid for placement, and no product was included or ordered for any reason other than how its design and features fit real-world use.
what is the best air fryer under $150
In my opinion it is the Instant Pot 4Qt VORTEX. It is the only true air fryer in this group, with six cooking functions, a 4-quart basket for up to four servings, 1500 watts, a ClearCook window with internal light, and a dishwasher-safe non-stick basket. If you specifically want liners or an oven accessory instead, the AKSDTH, Umilife, and Redfly picks cover those needs.
No, but it changes your routine. A silicone liner like the AKSDTH or Redfly two-pack keeps grease and food residue out of the basket entirely, and both are dishwasher safe. The AKSDTH liners fit round 3–5 qt baskets, while the Redfly liners are square and built for 4–5 qt baskets. Match the shape to your basket before buying.
Parchment paper liners are flammable, which is the main argument both AKSDTH and Redfly make for switching to silicone. Silicone liners are reusable, non-stick, and rated for high heat — up to 450 °F for AKSDTH and 428 °F for Redfly. Over time you also stop rebuying disposable liners.
Measure your basket, then check the stated dimensions. AKSDTH fits 3–5 qt round baskets with an 8-inch top and 6.75-inch bottom. Redfly fits 4–5 qt square baskets with a 7-inch bottom, 7.9-inch top, and 2.1-inch height. If your basket falls outside those ranges, neither set is the right fit.
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See also: best air fryer under $100, best air fryer under $50, AODPWEN 2 vs Onader Air Fryer Basket