You can deduct all your sales tax that you can prove with receipts, in which case you can include the stove.
Or, you can use the IRS standard amount which is based on your income and where you live. The only thing you can add to the standard amount is sales tax paid to buy or build a home, make a major renovation to a home, or for purchase of a motor vehicle or airplane. The term "major purchase" is not really correct and, in my opinion, should not be used.
