The purpose of this question is not very clear to me. But yes, A product's title in the product page is within h1 tags. And so is a page's title in the page render.
How did you search for h1 tags in your homepage's source code?
I did a quick search on the source code of your homepage and found 4 instances of h1.
For your home page your main statement is on an H1 tag. However it also looks like you also did some formatting of the content of the home page, or pasted in pre-formatted content. It contains another H1 as well as several bits of hidden formatting. You may want to tidy that up.
Your product pages place the title inside an H1 tag, which is perfect.