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HollowPlasticBalls

Methodology

How our calculators do the math

Every estimate is transparent. Here are the exact formulas, constants, and assumptions behind each calculator — no black boxes.

Constants used

  • 1 acre = 43,560 ft²
  • 1 m² = 10.7639 ft²
  • 1 ft³ = 7.48052 US gallons
  • 1 m³ = 264.172 US gallons
  • 1 in = 1/12 ft; 1 mm = 1/304.8 ft
  • Coverage density: 10 balls/ft² (108/m²), forming a 91% layer — per AWTT published data

Evaporation & water-loss savings

The evaporation calculator estimates the water a cover keeps in the basin each year:

  1. Convert surface area to ft² (acres × 43,560, or m² × 10.7639).
  2. Convert the annual evaporation depth to feet (inches ÷ 12, or mm ÷ 304.8). Presets: arid ≈ 60 in/yr, moderate ≈ 40 in/yr, humid ≈ 25 in/yr, or enter a custom depth.
  3. Gross annual loss (ft³) = area (ft²) × evaporation depth (ft/yr).
  4. Water saved = gross loss × reduction %. The slider defaults to 88% and is capped at Armor Ball®'s up to 90% reduction.
  5. Convert to gallons (× 7.48052) and m³ (÷ 264.172).
  6. Dollars saved = (gallons ÷ 1,000) × your $/1,000 gal, or m³ × your $/m³.

Simple payback (optional) = your estimated installed project cost ÷ annual dollars saved. We never pre-fill pricing.

Coverage & units needed

The coverage calculator sizes the order:

  • Balls needed ≈ surface area (ft²) × 10 (or area in m² × 108).
  • Example: a 1-acre pond = 43,560 ft² × 10 ≈ 435,600 balls.

This is a planning estimate; final quantities are confirmed on quoting to account for pond geometry, walls, freeboard, and equipment areas.

Heat-loss ROI

The heat-loss calculator estimates heating-cost savings from R-2 floating insulation:

  • Annual saving = your current annual heating cost × heat-loss reduction %.
  • Reduction defaults to 70% (the figure AWTT cites for Armor Ball®; up to ~75% for AQUA).
  • Simple payback (optional) = estimated installed project cost ÷ annual saving.

Assumptions & limitations

  • Results are planning estimates, not guarantees. Real performance depends on climate, wind, sunlight, water chemistry, and site conditions.
  • Performance figures (up to 90% evaporation reduction, R-2 insulation, up to 70% heating-cost reduction, 10 balls/ft²) are per AWTT published data.
  • Calculations run in your browser; no data is stored, and pricing is never fabricated.

Want a site-specific engineering assessment instead of an estimate? Request a quote and AWTT will size and confirm performance for your site.

FAQ

About the methodology

Are the calculator results guarantees?
No. They are transparent planning estimates based on the formulas and confirmed Armor Ball® performance figures below. Actual results depend on local climate, wind, and site conditions; AWTT confirms quantities and performance on quoting.
Where do the performance figures come from?
The default reduction figures — up to 90% evaporation reduction, up to 70% heating-cost reduction (up to ~75% for AQUA), and 10 balls/ft² coverage — are per AWTT published data.
Do the calculators store or price my project?
No. Calculations run entirely in your browser, and we never pre-fill or fabricate pricing — payback is only shown if you enter your own estimated project cost.

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