Investors & landlords

I have read your synopsis of HVAC. When you itemize an invoice, there are two parts in my case, a heater and an AC for a two bedroom apartment. Each apartment has their own units. Each part is under $2500, therefore is this a 27.5 year depreciation or can it be depreciated under the bonus depreciation rules? I would also add that the building is owned by 3 people so my total portion is $1698.

Thank you.