Questions about turning a primary residence in to a rental

[Therese V.]

We are buying a new home and will be turning our primary residence in to a rental property. I have the following questions, thanks for any help in answering them!

1. We have taken the home office deduction each year, how will this affect turning it to a rental? Or, no affect at all?

2. We bought a new HVAC system that we still owe some money on (0% interest so decided payments were better). Can we start taking the payments as a deduction in any way once this officially is rented?

3. After we officially move to the new home, can all maintenance and any repair all be deducted?

4. Any other things I need to factor in to changing a primary residence to a rental?