Deductions & credits

Thank you. Regarding the cost basis, the reason I asked this is because TurboTax instructions at this section say the basis is what the cost was including whatever you spent to acquire it. For financed properties, it's whatever debt you took on to acquire it. Given that we had costs associated with the initial purpose, and then refinanced twice using no-cost refinancing, which means we had the cost of this refinance rolled into our loan balance each time and the loan amount already reflects this debt.  If I can't include refinance costs then do I go back to the original loan and include those costs to acquire the house, or do I use the amount from the most recent refinance and deduct the closing costs that were rolled in?  As for the capital improvements, I recently asked TT Support about an HVAC improvement we did last year and I was told to add this as a capital improvement. I was asking them for clarification on whether it was an expense or a capital improvement, but I didn't ask whether that meant to add it to my original cost basis or if it meant I needed to add a separate HVAC Asset entry on the Home Office Asset Summary page in addition to the house asset. My understanding was that I needed to add the HVAC as it's own Asset entry, which represents the capital improvement made to my house. I may have completely misunderstood how to do this, which is why I need some clarification. Are you saying that's not the way to do this?