Subject has HERO for new energy efficient forced air unit and ducting in the amount of $20,000. It was installed this month. Comps used were recently remodeled in the last 2-3 years and 2 of them have newer forced air units. Went back 3 years with no parameters in the same city and did not find one comp with HERO. Went to a neighboring city and found HERO tax assessment in the amount is $3500 for windows. Talked to the agent of the sale in a neighboring city with PACE and he said the property will not sell unless the sellers pay for the $3500 tax assessment before closing or give a credit in that amount. Based on this information, would straight line depreciation seem to make sense? Or how would one approach this situation for adjustments of the assessment? thank you in advance.