Customer had concern with leaking humidifier. Stated that black buildup caused blockage in clear tubing. Customer removed and cleaned with pipe cleaners. Asked if issue is normal. Advised slight buildup and discoloration is normal but not a full clog. Inquired about hard water. Customer stated water filtration system had issues, advised those issues could cause worse buildup then normal pad quite used replaced in august but looks as if hadn’t been replaced in multiple years. Advised filter issues seems to be cause. Customer has issues with dryer vent. Dryer is in pamper room with vent inside wall. Wanted hard pipe to wall inlet. Advised dryer would need to be moved out to hard pipe. Roughly 4-5 inches pulled dryer out as rough ballpark. Customer was not satisfied and looking into a more rigid flex pipe to avoid buildup in pinched pipe., customer has insufficient return air upstairs. Interested in mini split installed in main hallway foyer to accommodate in heating and cooling seasons.