Upon my arrival in Rollingwood, Tx., I recovered 17pounds of r410a, pressure tested the ac system with 400psi nitrogen, calculated how much refrigerant the ac system needed needed per piping and capacity which came out to 24 lbs of r410a. I pulled a good vacuum and then recharged the ac system with the 24 pounds of r410a, set up the dip switches correctly, set up the thermostats properly per static pressure and set the blower up to stop when the ac system satisfies in cooling and heating to prevent the ac system for over humidifying the space. I also replaced the filters on all the ac systems. After all the repairs I tested the ac system and made sure it was cooling properly.