Arrive at customers house for leaking water heater. Gave customer options to replace unit. Customer chose bronze option. Install 50 gallon Rheem water heater with expansion tank and re-piping copper. Advised customer that he will need a chimney liner to pass inspection. Customer will seek his own liner company before inspection. Customer also brought a slow drain to my attention. Gave options to snake drain with snake. Drain worked for a bit after snaking but seems to be a small blockage further out. advised customer of this problem he said he will monitor it and will call us back if problem worsens.