I recently purchased an OTG for my home bakery. And I did lots and lots of research on questions like

What type of otg should I buy?

What should be the ideal capacity?

Which brand otg should I buy?

Should convection fan be included or not?

And most important should I go for otg or microwave.

At last, I decide to buy Borosil Prima 42 liters otg. As it is for my home bakery. I need to bake 2 to 3 cakes simultaneously.

Now coming back to your question. If you are buying An otg for your own use you can buy any capacity between 30 to 40 liters. It also depends upon the number of members in your family. Ideally, 40 liters is just enough for 4 to 6 members.

But do not go below 30 liters. An otg below 30 liters capacity is just won’t work.

You can also look in for additional features like convection fan or stay on function.

Hope your query is solved.

Now after working in this field for past 3 years and working with many ovens. I can confidently comment on one thing. Your org should always be above 50 liters. All the devices that are below have heating problem. All of them. Specially bajaj Otgs. Please choose wisely.