How much does it cost to operate a swim spa monthly?

There are a lot of variables that determine monthly operating costs. Some of these variables include climate, how often the swim spa is used, filtration cycles, cost per kilowatt hour in the area, is it a 110v or 220v system and whether or not the spa is foam filled or recovers the waste heat off of the motors. As you can see there are many factors in determining your monthly costs. Most swim spas cost about a dollar a day which is pretty reasonable considering the benefits. A dollar a day is usually based on using the spa 30 minutes a day, 5 days a week in a cold climate.
San Antonio having relatively inexpensive power and higher outside temps. will make your swim spa operating cost low.