Maximizing Refi for BRRRR

[Jesse Mitchell]

Morning BiggerPockets world.

I am currently on the first R and trying to plan my renovation in a way that maximizes my appraisal ( as expected)...

I have the opportunity to save about a grand on my rehab by having a used HVAC system installed.  It is a 7 yr old Lennox system and the new option for a grand more would be a GMC unit.  So my question to anybody out there is how much weight would a new HVAC have on the appraisal vs a used HVAC?  I personally feel that the Lennox still has a better long term usage than a new GMC but as I said, right now the main goal is maximized appraisal price.

Thoughts?

Thanks!