Hi Julie, the cost and ability to deliver to residences and the cost to deliver the dewars around the US varies so much that you might just ask your own oxy place what the cost would be. The tanks do vent, and if they are adjusted wrong (like they were in a class I was in) they can build an iceberg on top of the tank. Liquid oxy itself is much more dangerous than compressed oxy. However, all things taken into consideration, if you are using one of the larger torches on a daily basis, then I would think it might be a good thing.
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Pam
"It is easier to perceive error than to find truth, for the former lies on the surface and is easily seen, while the latter lies in the depth, where few are willing to search for it." Johann Wolfgang Von Goeth
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