The recurring costs
Chemicals. A typical Central Texas pool consumes chlorine, acid, and bicarb year-round, with the heaviest demand from roughly May through September. Salt pools shift the cost from liquid chlorine to salt, cell wear, and electricity, not to zero.
Electricity. The pump is usually the largest energy consumer on the property after the HVAC. A single-speed pump running long hours in summer costs meaningfully more per month than a variable-speed pump doing the same turnover slowly.
Water. Evaporation in a hot, windy Central Texas summer is real, and a heated pool or an active water feature loses more.
Service or your time. Either you pay a professional or you buy the test kit, the chemicals, the brush, and the Saturday.
The scheduled maintenance most owners forget
Filter cleans — cartridges quarterly, DE typically two to three times a year here depending on trees, pollen, and bather load.
Filter media replacement. Cartridges are consumables, not permanent parts. DE grids wear out too.
Salt cell cleaning quarterly on salt pools, and cell replacement on a multi-year cycle.
Mastic and expansion joint maintenance, which is cheap on schedule and expensive after water has been getting behind the coping for two years.
The replacement clock
Pumps, heaters, salt cells, actuators, cleaners, lights, and controllers all have service lives. None of them fail at a convenient time, and in Central Texas heat and hard water they rarely beat the optimistic end of their range.
Plaster and pebble surfaces have a lifespan too. Aggressive water shortens it dramatically; balanced water is the cheapest surface insurance that exists.
The honest way to budget is to treat the equipment pad like a roof: know roughly what everything costs to replace and roughly how old it is, and set money aside annually instead of reacting.
Where owners actually waste money
Running the pump far longer than turnover requires, at full speed, all summer.
Buying chemistry from a store based on a strip reading instead of a full panel — usually resulting in stabilizer or calcium being added to a pool that already had too much.
Deferring a filter clean until pressure damages the pump or the water goes cloudy and needs a chemical rescue.
Cheap surface work. A replaster done over unresolved water chemistry fails early, and you pay twice.
