Hot tub vs swim spa: Which costs more to run? It's a larger body of water than what's in a hot tub, so a swim spa will cost you a bit more for both electrical and maintenance. But how much more? Watch the video to find out from Carmen and Vanessa, who recently made the switch from hot tub and swim spa. Spoiler alert - despite the higher costs, the couple agree that the swim spa is totally worth it! The Water Is Calling 💧 #wateriscalling #hydropool #swimspa #hottub #maintenance #finance | Aaron