Can I take my stove if I leave another in its place

Please clarify what you mean by "upgrade" - did you buy the stove and install it yourself, and if so, were you not reimbursed by the land lord? What happened to the original stove? In general you need to leave the apartment as it was when you moved in plus any improvements that you did not pay for yourself. So if you bought the stove with your own money and were not reimbursed for it, and assuming you installed it yourself, it would seem OK to take it with you as long as you replace it with the original one.

Um, start at the beginning please?
Did the old stove break, the LL promised a new one, never did, and so you bought one?
Technically you should put the old one back in when you leave, but if the one you do put in is maybe a little better, you'd probably get away with it.
If this is a question of a stove that worked but you were promised an 'upgrade' as you say, that never happened, then no, you could easily get into trouble for getting rid of a perfectly good. You should have worked on the promise when it occurred. In that case, I would deal honestly and directly with the LL now, while you can both keep calm about it.

Agreed, we need more background on why you replaced the stove, whether you had permission to, etc. Generally any fixtures added to rental premises become the property of the landlord. And a stove is considered a fixture.

Also, ANY question on law needs to include your general locale as laws vary by area.

I had a purchase agreement with him for a year where I was to take of things. The original stove worked but not well. I got a great deal on high end model and put it in. I am not buying the house, when I leave I was going to take my stove with me and put one back that is closer to his old model.

I can take my improvements back, I have receipts, and will not be leaving holes where things should be. I take my stove and make sure there's a working stove there as I had found it. The original stove was the original stove from 1972, and anything else I put in there is better.

There will be a stove there, just not my $1200 stove. I have the receipt. The original stove didn't work well and he still will end up with a stove better than what he start with.

First when posting a follow-up question or info, please use the Answer options at the bottom of the page rather than the Comments.

So you had a contract for sale and you are walking away from it? Without knowing where you are we can't check local laws. But if he knows you put in a new stove, he may sue you if you take it with you and he may win.

A contract to purchase is not the same as a rental.

And some items are considered part of the home and/or the sale.

What exactly are the terms of the contract if you don't buy, I will assume you will be in breach of the contract at some point for non purchase ?

Was the stove listed on the sale contract as being included in the sale of the home