My ac and heater doesn't blow as hard as I want; is there an upgrade I can do or is that just how a 20 year old jeep is Gunna be?

 

More likely than not, a rodent has built a nest in the fan and/or plenum. Remove the fan, you'll know soon enough.

 

or your stock fan is just tired.

 

Does it blow on all speeds?

 

You can actually check this out without removal. Poke your noggin under the passenger side dash. Shine a light up at the vent with all the little squares. Move the upper heater control lever until that door opens and you're looking right into the blower fan.

 

could also be a clogged heater core or evap coil (dust and dirt) butwhen i took mine out in my 98 they were clean. i think if you are trying to compare it to a newer car its just not as much

 

Yeah everything is clean, it works good, I'm just wanting to make more power. Figured there would be something but I guess it's not necessary. Blows hard. I just wish I could feel it come from all of the vents when it's on bi level, the passenger vents barely blow at all when it's all the way up