I live in Virginia Beach Va area. A single family home, 1750 sq. ft. Trying to decide between a carrier 2.5 tons, 15 sere, R-410, Digital Thermostatnot replacing lines, Air handleler $5,750. Vs. a Trane 2.5 tons, 15 sere, R410, Digital thermostat, 1 year maintenance $5950. For both unit, Use existing ductwork. Seal any leaks. Use existing refrigirant tubing. Tubing to be flush with R-410 kit. Units to be wire from the disconnects. Any takers.