I agree, February 2001, Manufactured in Ft. Smith, AR.
You can find all that info here on almost every HVAC system and water heater: (Thought everyone knew about this.)
Totally free to use, absolutely OUSTANDING reference site. Consider a donation to help 'em out 
Most of us do. 
Yep 2001. Everybody should tap into BIC or similar
The four numbers after the 0801 are the manufactured date. According to the Building Intelligence Center, that would be week 8 of 2001.
Google or builders Intelligence works great for finding the age of appliances and equipment
Very Helpful and I use it all the time and have it pinned to my browser. I also donate some cash every year. https://www.building-center.org/