1. What is BTU Calculation for Pool Heat Pumps?

The BTU (British Thermal Unit) calculation determines the heating capacity needed for a swimming pool heat pump. It accounts for pool volume and desired temperature rise to ensure proper sizing of the heating system.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Pool Volume \) — Total water volume in gallons
• \( Temperature Rise \) — Desired temperature increase in °F
• \( 8.33 \) — Weight of one gallon of water in pounds

Explanation: The formula calculates the energy required to heat a specific volume of water by a certain temperature difference.

3. Importance of Proper Sizing

Details: Correctly sizing your pool heat pump ensures efficient operation, proper heating performance, and energy savings. An undersized unit won't heat effectively, while an oversized one may cycle too frequently.

4. Using the Calculator

Tips: Enter your pool's total volume in gallons and the desired temperature rise in degrees Fahrenheit. For accurate results, measure your pool's exact volume rather than estimating.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine my pool's volume?
A: For rectangular pools: Length × Width × Average Depth × 7.5. For circular pools: Diameter × Diameter × Average Depth × 5.9.

Q2: What temperature rise should I use?
A: Typical rises are 10-20°F, but consider your climate and desired swimming temperature.

Q3: Should I add any safety factor?
A: It's common to add 10-20% to the calculated BTU for heat loss due to evaporation and wind.

Q4: How does this relate to heat pump tonnage?
A: 12,000 BTU = 1 ton. A 100,000 BTU heat pump would be about 8.3 tons.

Q5: What about heat pump efficiency (COP)?
A: This calculation gives raw BTU needs. Actual electrical input will be less due to heat pump efficiency (typically COP of 4-6).