1. What is an Inground Pool Heater Calculator?

Definition: This calculator estimates the required heater size (in BTU/h) for an inground pool based on surface area, desired temperature increase, and heating time.

Purpose: It helps pool owners and professionals determine the appropriate heater capacity for efficient pool heating.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Size} \) — Heater capacity (BTU per hour)
• \( \text{Surface Area} \) — Pool surface area (square feet)
• \( \Delta T \) — Desired temperature increase (°F)
• \( \text{Hours} \) — Desired heating time (hours)

Explanation: The formula calculates the energy needed to raise the pool temperature by multiplying area by temperature difference, then divides by time to get the required heating rate.

3. Importance of Proper Heater Sizing

Details: Correct heater sizing ensures efficient operation, prevents energy waste, and extends equipment lifespan while maintaining comfortable water temperatures.

4. Using the Calculator

Tips: Enter the pool surface area, desired temperature increase, and how quickly you want to heat the pool. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical ΔT for pool heating?
A: Most pools aim for a 10-20°F increase, depending on climate and season.

Q2: How do I measure my pool's surface area?
A: For rectangular pools: length × width. For circular pools: π × radius². For irregular shapes, break into regular sections.

Q3: What's a reasonable heating time?
A: 24-48 hours is typical for initial heating, 8-12 hours for maintenance heating.

Q4: Should I add a safety factor?
A: Yes, consider adding 10-20% to account for heat loss through evaporation and conduction.

Q5: Does this account for heat loss?
A: No, this is a basic calculation. For more accuracy, consider wind exposure, humidity, and pool covers.