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Automatic Pool Covers: Costs, Benefits and Maintenance

An automatic swimming pool cover is widely regarded as the ultimate multi-function pool accessory. Combining an impenetrable ASTM-certified safety barrier with superior thermal insulation, an automatic cover operates at the touch of a button or turn of a key. By stopping evaporation, it slashes heating bills by up to 70 percent, reduces chlorine degradation, and keeps leaves and dirt out of the water. However, automatic covers require significant upfront investment, specialized track alignment, and routine mechanical care.

9 min read, updated September 2026

Key takeaways

  • ASTM F1346 certification ensures the cover can support 485 pounds, preventing accidental child drownings.
  • Stops water evaporation, saving 60 to 75 percent in seasonal heating costs and thousands of gallons of water.
  • Reduces chlorine consumption by 50 percent by blocking ultraviolet photolysis from the sun.
  • Under-track systems recess beneath coping for rectangular pools; top-track systems fit freeform pools.
  • Tracks and pulleys must be flushed with water and lubricated bi-annually to prevent cable breakage.

Under-Track vs Top-Track Mounting Systems

Automatic pool covers operate via an electric motor or hydraulic drive mechanism rotating a heavy-duty aluminum roll tube housed inside a recessed pit at the deep end. The mechanism guides the reinforced vinyl cover across the pool using two parallel guide tracks:

  • Under-Track Systems: Mounted directly beneath the pool coping stones on rectangular pools. The track is completely hidden from view when the cover is retracted, delivering clean, modern architectural lines.
  • Top-Track Systems: Mounted directly on top of the pool deck surface. Top-track systems are primarily used on freeform or kidney pools, where the rectangular cover rolls out across the entire pool deck surround.

Thermal and Chemical Energy Economics

Water evaporation is the primary culprit behind both heat loss and water loss in swimming pools. Evaporation accounts for over 70 percent of total heat energy dissipated from a pool. Because an automatic cover forms an airtight seal over the water, evaporation drops to virtually zero when closed.

Annual Cost Savings with an Automatic Pool Cover

Expense CategoryUncovered Pool (Annual)Covered Pool (Annual)Estimated Annual Savings
Gas / Heat Pump Heating$1,500 - $3,000$450 - $900$1,050 - $2,100
Chemical Sanitizer & Acid$600 - $1,000$250 - $400$350 - $600
Make-up Water (Evaporation)$150 - $300$20 - $40$130 - $260
Filter Pump Run Time$400 - $700$250 - $450$150 - $250

Model your potential evaporation savings with our Pool Water Loss Calculator and evaluate heating costs with the Pool Heater Sizing Calculator.

Essential Maintenance and Cover Pump Protocol

Rainwater accumulating on top of a closed automatic cover adds immense physical weight. Just one inch of rain across a 16x32 pool weighs approximately 2,600 pounds. An automatic cover pump must be placed in the center of the cover whenever rain is forecast to pump standing water off the fabric and prevent motor vault flooding.

automatic pool covers cost FAQs

Can an automatic pool cover replace a fence for building codes?

In many jurisdictions, an ASTM F1346 certified automatic safety cover is approved as an alternative to a four-sided pool isolation fence. Check with your local city building department to verify municipal codes.

How long does the vinyl fabric of an automatic cover last?

Quality reinforced PVC fabric lasts 5 to 8 years before requiring replacement. Regular chemical balancing and keeping chlorine under 4 ppm preserves fabric flexibility.

Why does my automatic cover close crooked?

Crooked movement indicates unequal rope tension. Ropes stretch over time, causing one side to lag behind. Adjust the brake clutches inside the motor mechanism to restore parallel tracking.