You would not BELIEVE the level of detail that legal regulations go into when allowing the placement of oxygen in the home. it has to be so far in distance from this and that, any concentrator must be plugged directly into a wall outlet rather than an extension, can't be near a heater of course, tanks must be stored thus and so. Our house has both a gas stove and water heater, which made for even more things to have new-to-me laws about. 90% of the oxygen man's initial setup and delivery process was spent going over all of these laws I must now learn and follow, with the rest of the time explaining the actual complicated delivery systems. I do understand why this must be so, but was a little surprised at how thoroughly the law had addressed the issue.