You can replace the hose by removing the compressor. The compressor is attached to the system with hoses, so it can be moved aside once you get the compressor detached. This isn't easy to do, but it is doable. I've done it several times. The first time took me 2 days trying to figure out how the air pump tube fits thru the compressor bracket and connects to both the solenoids above the compressor and the air tube to the converter without it getting in the way of the compressor brace to the exhaust manifold. The last time I did it 4 weeks ago it only took 4 hours.
It's such a pain that I'd first try removing the fan belt tensioner and the belt. Then you can access the heater hose clamp on the water pump thru a window in the compressor bracket. If the clamp screw is turned the wrong way, then you're out of luck and the compressor and bracket have to come off.
Taking the compressor off and putting it back on makes you want to meet the engineer that designed the bracket. The fuel lines and a air pump tube go thru a hole in the bracket, preventing the bracket from coming off with the compressor still attached. If only the braket had a notch instead of a hole it would be alot easier. Getting the compressor off wouldn't be so hard if one bolt didn't hit the valve cover, forcing you to remove all of the bolts from the bracket (including the 2 nuts attaching it to the water pump and the torqx head bolt under the compressor pulley) and prying the bracket and compressor forward until the bolt comes out. Getting everything back on is even more fun. Warning!! Don't let young childeren, pets or wives into the gargage when you are doing this. Just the look on your face will scare them!!
Good luck!
Dennis