It is easy to assume that hot tubs are meant for decent to warm weather. While some hot tubs cannot handle colder temperatures, others have the right water heater that can fight off snow and ice. Inflatable hot tubs meant for winter use need extra insulation and protection to keep air sealed in. With the right hot tub, you can enjoy warm water even when everything else is frozen around you.
They don’t usually use real water jets, but instead use fans to “blow” the air around (also because of the 120 volt outlet), which causes them to cool down much faster than a regular hot tub. This cooling effect is only made worse by the fact that the materials they are made from lose heat much faster than the materials used on a regular hot tub. All in all, you aren’t likely to get more than 15 minutes to a half an hour of good heat out of an inflatable hot tub.