1. What is an Above Ground Pool Heater Calculator?

Definition: This calculator determines the required heater size (in BTU/h) needed to heat an above ground pool based on volume, desired temperature increase, and heating time.

Purpose: It helps pool owners and professionals select the appropriately sized heater for their above ground pool.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Size — Required heater capacity (BTU/h)
• Volume — Pool water volume (gallons)
• ΔT — 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 by the desired temperature in the specified time.

3. Importance of Proper Heater Sizing

Details: Correct heater sizing ensures efficient operation, proper temperature maintenance, and avoids unnecessary energy costs.

4. Using the Calculator

Tips: Enter your pool volume in gallons, desired temperature increase, and how quickly you want to heat the pool (default 24 hours). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical ΔT for pool heating?
A: Most people heat pools 10-20°F above the current water temperature.

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 reasonable heating time?
A: 24 hours is standard, but 12-48 hours are common depending on heater size and urgency.

Q4: Does this account for heat loss?
A: No, this calculates heating needs only. Add 20-30% more BTU for heat loss in cooler climates.

Q5: Can I use this for in-ground pools?
A: The formula works, but in-ground pools typically need larger heaters due to greater heat loss.