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Sometimes issues like cloudy or unbalanced water can make owning a hot tub more stressful than soothing. Many hot tub owners hesitate to change their water due to perceived high costs, but the reality is, it’s much more affordable than you might think.
The misconception about water costs
One common concern among hot tub owners is the cost of changing the water. Many believe that refilling their spa can be a costly affair, often quoting figures as high as $50, $150 or even $300. However, the actual cost is surprisingly low.
The average cost of municipally-supplied water in the U.S. is around 1.5 cents per gallon, including sewer/discharge fees. This means filling a standard 400-gallon hot tub costs approximately $6. Even in areas with higher water costs, like San Diego, where water costs about 1.82 cents per gallon, it will only set you back $7.28 to fill a 400-gallon spa.
“By having the client provide their water bill, or by looking up water costs online, we can calculate the cost,” says Tim Rodger, water care expert with The Spa Marvel Company. “It always comes down to about 1.5 cents per gallon.”
Calculating the real cost
But what about heating the spa water once it’s been refilled? Let’s break down the costs with a practical example.
Water Cost: Filling a 400-gallon hot tub with municipal water (including sewer charges) costs around $6.
Heating Cost: Heating your spa from 62°F (typical tap water temperature) to 104°F takes about 6 hours with
