1. What is a Pool Heater Sizing Calculator?

Definition: This calculator estimates the required heater size (in BTU/h) for swimming pools based on volume, 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:

• \( Size \) — Heater capacity (BTU/hour)
• \( Volume \) — Pool water volume (gallons)
• \( \Delta T \) — Desired temperature increase (°F)
• \( Hours \) — Desired heating time (hours)
• 8.34 — Weight of one gallon of water (lbs)

Explanation: The formula calculates the energy needed to heat the water volume through the temperature change in the specified time.

3. Importance of Proper Heater Sizing

Details: Correct heater sizing ensures efficient operation, prevents energy waste, and extends equipment lifespan while meeting heating requirements.

4. Using the Calculator

Tips: Enter pool volume in gallons, desired temperature increase in °F, and heating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the 8.34 factor in the formula?
A: This represents the weight of one gallon of water in pounds, needed to convert between volume and mass for heat calculations.

Q2: How do I find my pool's volume?
A: Use our Pool Volume Calculator or multiply length × width × average depth × 7.5 for rectangular pools.

Q3: What's a typical ΔT for pool heating?
A: Common values range from 10-30°F depending on climate and desired comfort level.

Q4: How does heating time affect the result?
A: Shorter heating times require larger heaters. Typical heating times range from 24-72 hours.

Q5: Should I add a safety factor?
A: Consider adding 10-20% to the calculated size for heat loss compensation and faster heating.