I believe the 40 gallon tank became standard only within the last couple of years. If I am not mistaken, the 20 gallon tank is located under or near the sink. There is not room there for the 40 gallon tank.
My first 40-gal tank was under a dinette bench, and extended into the rear storage. My current 40 gallon tank is in the back storage area. You would need to find a space, then run water lines, and put the water pump someplace. You may be able to plumb from the new location to the existing pump placement, but I am not sure if that is feasible. Guess it wouldn't matter, though. You have to run the water to that point to tie-in to the existing plumbing.
Not an impossible job, but running a water line after the unit was built will be a bit of a challenge.
Good luck!
|