Enter the desired temperature rise, the size of the pool, and the heater output into the calculator to determine the time to heat the pool.
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Pool Heat Time Formula
The following formula is used to calculate the total time it takes to heat a pool.
T = S * 8.33 * t / HP
- Where T is the heat time in hours
- S is the size of the pool in gallons
- t is the desired temperature rise (F)
- HP is the heater output power (BTUs/hr)
Pool Heat Time
How long does it take to heat a pool?
The time it takes to heat a pool depends on three factors:
- The size of the pool. The larger the pool and larger the body of water the more time it will take to heat the pool.
- The needed temperature rise. The more temperature difference you need to acheive the longer it will take.
- The power output of the heater. A more powerful heater will reduce the time it takes to heat the pool.
Example Problem
How to calculate pool heat time?
- First, determine the size of the pool.
For this example, the pool has 30,000 gallons of water.
- Next, determine the temperature rise that needs to be achieved.
For this problem, we would like to raise the temperature 20 degrees F from where it is now.
- Next, determine the power output of the heater.
The power output for this heater is estimated to be 400,000 BTUs per hour.
- Finally, calculate the time to heat the pool.
Using the formula above, the pool heat time is calculated to be:
T = S * 8.33 * t / HP
T = 30,000 * 8.33 * 20 / 400,000
T = 12.495 hours
