OTG vs Microwave vs Air Fryer: Which to Buy in India (2026)
Some links are affiliate links — if you buy through them we may earn a small commission at no extra cost to you. We only recommend products we'd use ourselves.
OTG vs Microwave vs Air Fryer: What Is the Real Difference?
An OTG, a microwave, and an air fryer all cook food, but they heat it in three different ways. An OTG uses top and bottom heating coils for baking and grilling. A microwave uses electromagnetic waves to reheat and cook fast. An air fryer uses a fan and hot air to crisp food with little oil.
I get this question almost every week from friends setting up a new kitchen. You have a small counter, one free plug point, and a budget. So which one earns its place first? The honest answer is that the three machines are not really rivals. Each does one job better than the others.
Once you know what each is built for, the choice gets simple. Let me break down how they work, what they cost in India, and which one fits your cooking.
The short version. Buy a microwave if you mostly reheat and defrost. Buy an air fryer if you want crispy snacks with less oil. Buy an OTG if you bake cakes, breads, or want to grill and toast a lot. A convection microwave is the one machine that tries to do a bit of all three.
Side-by-Side Comparison: Specs, Price, and Best Use
A microwave is the cheapest to run per task and the fastest for reheating. An OTG is the largest and best for baking, but it is the slowest and needs preheating. An air fryer is the smallest and crisps food fast with little oil. Price, capacity, and power draw all differ a lot between the three.
Here is how the three appliances stack up on the things that matter most when you buy in India.
| Feature | OTG | Microwave | Air Fryer |
|---|---|---|---|
| How it heats | Top & bottom coils (radiant heat) | Electromagnetic waves excite water in food | Fan circulates hot air around the food |
| Typical power | 1200–2000 W | 700–1200 W | 1200–1800 W |
| Common capacity (India) | 20–60 L | 20–32 L | 2–6 L |
| Typical price (India) | ₹3,000–₹25,000 | ₹5,000–₹25,000 | ₹3,000–₹15,000 |
| Best at | Baking, grilling, toasting, roasting | Reheating, defrosting, quick cooking | Crisping, low-oil frying, frozen snacks |
| Preheat needed? | Yes, usually | No | Little or none |
| Oil for frying | Some | Not for frying | Little to none |
Capacity gap: Air fryers in India sell mostly in the 1–6 litre range, while OTGs run from 20 up to 60 litres — so an OTG can hold a full cake tin, but an air fryer cannot. (Source: Crompton.)
You can browse current models here: OTGs on Amazon, convection microwaves on Amazon, and air fryers on Amazon. Popular India picks include the Philips HD9252/90 and the budget Pigeon Healthifry for air fryers, Bajaj and Agaro for OTGs, and Samsung or LG for convection microwaves.
Which One Is Best for Baking, Reheating, and Frying?
For baking cakes and breads, an OTG wins because its coils give even, steady heat. For reheating leftovers and defrosting, a microwave wins on speed. For crispy fries, tikka, and frozen snacks with little oil, an air fryer wins. No single machine is best at all three jobs.
Think about what you cook most. That decides the winner for you.
For baking: An OTG is the trusted choice. As LG India puts it, an OTG gives even heat distribution that is ideal for crispy crusts and well-cooked insides in baked goods. If you bake cakes, cookies, or pizza often, an OTG with a 30 litre or larger capacity is the safe pick.
For reheating: Nothing beats a microwave. It heats from within the food and finishes in a few minutes with no preheat. Cold dal, last night's sabzi, or a plate of rice are ready fast.
For frying-style cooking: An air fryer is the modern favourite. It crisps samosas, fries, and paneer tikka using a spoon of oil or less. Crompton notes that air fryers cook much faster than OTGs and use little to no oil. For a deeper look, see our guide on what an air fryer can cook beyond frying.
Which Uses the Least Electricity?
A microwave usually uses the least electricity per task because it runs for only a few minutes and draws 700 to 1200 watts. An OTG draws the most power, 1200 to 2000 watts, and runs longer because it must heat the whole cavity. An air fryer sits in between but finishes faster than an OTG.
Watts alone do not tell the full story. What matters is watts multiplied by time. A microwave may pull 1000 watts, but it runs for two minutes. An OTG may pull 1500 watts and run for 40 minutes with preheat. That is why the microwave is the cheapest per reheating job.
Power draw, side by side: Microwaves run at 700–1200 W, OTGs at 1200–2000 W, and air fryers at 1200–1800 W — so the OTG is the heaviest on your meter for long bakes. (Source: Indian appliance specs, Crompton/Hindustan Times.)
If your monthly bill worries you, read our breakdown of air fryer electricity cost in India for the rupee math.
Is Air-Fried Food Actually Healthier?
Air-fried food uses far less oil than deep frying, so it can lower fat intake. But air frying is still high-heat, dry cooking, so it can form acrylamide in starchy foods like potatoes. Air frying is healthier than deep frying for fat, but it is not acrylamide-free, and the same caution applies to OTG baking and toasting.
This is the honest part most ads skip. An air fryer is a real win on oil. You can crisp fries or pakoras with a teaspoon of oil instead of a deep pan. That cuts fat, and that is a genuine health benefit.
But high, dry heat has a catch. The European Food Safety Authority states that acrylamide in food potentially increases the risk of developing cancer for consumers in all age groups. Acrylamide forms above 120°C through the same browning reaction that turns food golden, so it appears in fried, baked, roasted, and toasted starchy foods — in an air fryer and in an OTG alike.
The fix is simple and applies to all three machines. The US FDA advises cooking potatoes and fries to a golden yellow rather than brown, and toasting bread to a light colour, not dark — the darkest, most browned bits hold the most acrylamide. Cook to golden, not charred, and you cut the risk while keeping the crunch.
This is not magic. No countertop machine makes fried snacks a health food. An air fryer simply uses less oil. Eat fried items in moderation, whichever appliance you use.
Which Should You Buy First?
Buy a microwave first if your daily need is reheating and quick cooking for a busy household. Buy an air fryer first if you crave crispy snacks with less oil and have a small kitchen. Buy an OTG first if baking is your main hobby. A convection microwave is the best single-machine compromise when counter space is tight.
Here is how I guide friends, based on who they are.
- Pick a microwave if you live alone or reheat a lot — it is the fastest, lowest-effort option.
- Pick an air fryer if you love fried snacks but want less oil — great for couples and small families.
- Pick an OTG if baking cakes and breads is your thing — it gives the most baking space.
- Pick a convection microwave if you can buy only one machine — it reheats, bakes, and grills in one box.
- Check your counter and plug points before buying — an OTG needs the most space, an air fryer the least.
Still torn between two of them? These deeper comparisons help: air fryer vs OTG, air fryer vs microwave, and air fryer vs convection microwave.
The kitchen takes your mornings, afternoons, and evenings. Your family gets what's left.
InstaCuppa builds time-saving kitchen tools for busy Indian families — so the kitchen stops stealing the moments you can't get back.
More time for what matters.
🔥 InstaCuppa Best Sellers
InstaCuppa Portable Blender for Smoothie and Juices, Milk ShShop Now
InstaCuppa Premium Electric Chopper with 3 Unique AttachmentShop Now
InstaCuppa Portable Blender with 4000 mAh Rechargeable BatteShop Now
InstaCuppa Multipurpose Electric Kettle Cum Cooker with FreeShop Now
InstaCuppa Stainless Steel Thermos Flask Water Bottle with SShop Now
InstaCuppa Milk Frother for Coffee - Handheld Battery-OperatShop Now
InstaCuppa Rechargeable Mini Electric Chopper, Chops In LessShop Now
InstaCuppa Portable Electric Kettle With Temperature ControlShop Now
InstaCuppa Portable Multi Cook Electric Kettle with Non-SticShop Now
InstaCuppa Automatic Curd Maker Machine | Probiotic-Rich YogShop Now
InstaCuppa Automatic Water Dispenser for 20 Liter Cans with Shop Now
InstaCuppa Portable Electric Kettle, Travel Electric Water BShop Now
InstaCuppa Portable Blender for Smoothie and Juices, Milk ShShop NowInstaCuppa Premium Electric Chopper with 3 Unique AttachmentShop NowInstaCuppa Portable Blender with 4000 mAh Rechargeable BatteShop NowInstaCuppa Multipurpose Electric Kettle Cum Cooker with FreeShop NowInstaCuppa Stainless Steel Thermos Flask Water Bottle with SShop NowInstaCuppa Milk Frother for Coffee - Handheld Battery-OperatShop NowInstaCuppa Rechargeable Mini Electric Chopper, Chops In LessShop NowInstaCuppa Portable Electric Kettle With Temperature ControlShop NowInstaCuppa Portable Multi Cook Electric Kettle with Non-SticShop NowInstaCuppa Automatic Curd Maker Machine | Probiotic-Rich YogShop NowInstaCuppa Automatic Water Dispenser for 20 Liter Cans with Shop NowInstaCuppa Portable Electric Kettle, Travel Electric Water BShop Now
Frequently Asked Questions
OTG vs microwave vs air fryer — which should I buy first?
Buy a microwave first if you mostly reheat food, an air fryer first if you want crispy snacks with less oil, and an OTG first if you bake often. If you can buy only one machine, a convection microwave reheats, bakes, and grills in a single box and suits small kitchens best.
Can an air fryer replace an OTG for baking cakes?
An air fryer can bake small cakes, but it cannot replace an OTG for regular baking. Air fryers in India hold only 2 to 6 litres, so a full cake tin will not fit. An OTG holds 20 to 60 litres and gives steadier, more even heat for cakes and breads.
Is a convection microwave the same as an air fryer?
A convection microwave and an air fryer are not the same, but they overlap. Both use a fan to move hot air and can crisp food. A convection microwave also reheats with microwaves, which an air fryer cannot do. An air fryer crisps small batches faster, while a convection microwave does more jobs in one machine.
Which uses the least electricity — OTG, microwave, or air fryer?
A microwave usually uses the least electricity per task because it draws 700 to 1200 watts and runs only a few minutes. An OTG draws the most, 1200 to 2000 watts, and runs longer to heat its large cavity. An air fryer sits in between but finishes faster than an OTG.
Is air-fried food actually healthy?
Air-fried food uses far less oil than deep frying, so it can lower fat intake. But it is still high-heat, dry cooking and can form acrylamide in starchy foods. The European Food Safety Authority links dietary acrylamide to a potential cancer risk. Cook to a golden colour, not dark brown, and eat fried snacks in moderation.
Sources & References
- Acrylamide — European Food Safety Authority (EFSA)
- Acrylamide and Food Preparation — U.S. Food & Drug Administration (FDA)
- Air Fryers vs OTGs: Which One Should You Choose — Crompton
- Microwave Oven vs OTG Oven — LG India
Founder, InstaCuppa | Building kitchen tools that take the work out of busy Indian mornings.
InstaCuppa makes everyday kitchen tools — bottles, blenders, frothers, and kettles — designed for Indian homes. The goal is simple: take the work out of your mornings so a cold glass of water or a hot cup is never a chore.
