Pool Heater Size Formula:
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Definition: This calculator estimates the required heating capacity for a swimming pool based on surface area and desired temperature increase.
Purpose: It helps pool owners and professionals determine the appropriate heater size for efficient pool heating.
The calculator uses the formula:
Where:
Explanation: The formula accounts for pool size and the energy needed to raise water temperature, with 1000 representing the BTU factor per square foot.
Details: Correct heater sizing ensures efficient operation, proper heating times, and avoids energy waste from oversized units.
Tips: Enter the pool surface area in square feet and the desired temperature increase in °F. All values must be > 0.
Q1: What's the 1000 factor in the formula?
A: This represents the approximate BTU requirement per square foot of pool surface area.
Q2: How do I measure pool surface area?
A: For rectangular pools: length × width. For circular pools: π × radius². For irregular shapes, break into regular shapes and sum.
Q3: What ΔT should I use?
A: Typical values range from 10-20°F depending on climate and desired temperature rise.
Q4: Does this account for heat loss?
A: This is a basic calculation. For pools with high heat loss (windy areas, uncovered), increase size by 20-30%.
Q5: Can I use this for saltwater pools?
A: Yes, but saltwater may require specific heater materials to prevent corrosion.