Using Oxygen at Home - What You Need to Know
Mar 04, 2021·Liquid oxygen is kept chilled inside a small, insulated case. The liquid warms and becomes a breathable gas when you need to breathe in. Liquid oxygen cases are smaller and easy to carry around. You can refill your small liquid oxygen case from a big tank kept in your home. Your oxygen delivery service will fill your large tank every 1 to 2 weeks.