I have been reading that one can have a 19i installed for the same price as a 14i because of current high efficiency unit incentives (tax credit, Trane rebates, poco rebates, etc.). I was wondering if a lot of people are not taking advantage of these incentives and why not. One of the main reasons I ask is that my brother wants me to replace his unit. The only problem is that I will more than likely not be able to get him the tax credits and rebates. I recently changed career paths, but I do still have connections in the HVAC field. I can still get the equipment from my old company. Also, my state allows a home owner to pull a mechanical permit for the job. I will likely only charge $1500 over the equipment cost. This will cover slab, drain pan, duct board, disconnects, my time, etc.