The term "hot tub" is often used interchangeably with "Jacuzzi," but there is a subtle difference between the two. A hot tub refers to a large tub filled with hot water used for relaxation or hydrotherapy, while Jacuzzi is a brand name that has become synonymous with hot tubs. Essentially, all Jacuzzis are hot tubs, but not all hot tubs are Jacuzzis.

The cost of running a hot tub in the UK depends on several factors, including the size of the hot tub, the temperature at which it's set, the frequency of use, and the energy efficiency of the model. On average, it can cost between £20 to £50 per month to run a hot tub in the UK, including electricity, water, and maintenance expenses.

Whether investing in a hot tub is worth it depends on your personal preferences and lifestyle. Hot tubs can provide numerous benefits, including stress relief, relaxation, and improved muscle and joint health. However, they also require ongoing maintenance and can incur additional costs. Consider factors such as your budget, available space, and how often you'll use the hot tub before making a decision.