Lousy Blower Motor Output

2003 Hyundai Sonata, 40K, 6 cyl, the blower motor does not appear to be along the firewall in the engine compartment. Is it under the dash somewhere? This car is too hot to be comfortable in even with the AC on high all day. This problem has been with the car since I bought it new in '03. I am going to check if there is something blocking the blower somehow. Works fine, other than pathetically low output. Would like to hear other suggestions.