what is the recommended temp
For all of these prospective spa users they can still enjoy the benefits of a spa, just at a lower water temperature for their safety, you may want to consult your physician to confirm what is a safe temperature. Optimal Temperature for a Hot tub. Manufacturers recommend 100 â 104 degrees is the optimal water temperature for your hot tub. This is to enjoy the most benefits from the hydrotherapy you can receive from your spa. Keeping the water temperature of your spa at this level will take a combination of the heating element. And the addition of a good sealing well insulated hot tub cover. If you already have a great hard top cover, you may want to look at a soft cover for the water surface.