1. What is a Swimming Pool Heater Size Calculator?

Definition: This calculator estimates the required heater size (in BTU/h) for a swimming pool based on surface area and desired temperature increase.

Purpose: It helps pool owners and professionals determine the appropriate heater capacity to maintain comfortable water temperatures.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Size} \) — Heater capacity (BTU/hour)
• \( \text{Surface Area} \) — Pool surface area (square feet)
• \( \Delta T \) — Desired temperature increase (°F)
• \( 12 \) — Standard factor for pool heat loss

Explanation: The formula accounts for heat loss through the pool surface and the energy needed to raise the water temperature.

3. Importance of Proper Heater Sizing

Details: Correct heater sizing ensures efficient operation, prevents energy waste, and maintains consistent water temperature.

4. Using the Calculator

Tips: Enter the pool surface area in square feet and the desired temperature difference between the pool and ambient air. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical ΔT value for pools?
A: Most pools use ΔT of 10-20°F depending on climate and desired comfort level.

Q2: Does this account for heat loss from wind?
A: The standard factor includes average wind conditions. For windy areas, consider increasing ΔT by 10-20%.

Q3: How do I measure pool surface area?
A: For rectangular pools: length × width. For circular pools: π × radius². For irregular shapes, approximate or consult a professional.

Q4: Should I round up the heater size?
A: Yes, it's recommended to round up to the nearest standard heater size available.

Q5: Does this work for saltwater pools?
A: Yes, but saltwater pools may require corrosion-resistant heaters.