What size pool heater do I need for a 21000 gallon pool?
What size pool heater do I need for a 21000 gallon pool?
Heat Pump Sizing Chart – Above Ground Pools
| Pool Size (Feet) | Summer 4 BTU’s | Spring & Fall 5 BTU’s |
|---|---|---|
| Up To 13,000 Gallons Up To 24′ Round or 15′ x 30′ Oval | 50,000 BTU | 65,000 BTU |
| Up To 17,000 Gallons Up To 27′ Round or 18′ x 33′ Oval | 65,000 BTU | 85,000 BTU |
| Up To 21,000 Gallons Up To 30′ Round or 18′ x 40′ Oval | 85,000 BTU | 110,000 BTU |
What size pool heater do I need for 20 000 gallons?
For pools of up to 20,000 gallons, small heat pumps like the Hayward 95K BTU output are suitable. Pools up to 30,000 gallons should look at the AquaCal 120K BTU or higher, and 40,000 gallon inground pools should look at models like the Pentair 140K BTU.
What size pool heater do I need for a 21 round pool?
The easiest way to calculate BTUs
| Pool Size | Gas Heater Size | Heat Pump Size |
|---|---|---|
| 18 ft Round | 100,000 – 150,000 BTU | 50,000 – 70,000 BTU |
| 21 ft Round | 100,000 – 175,000 BTU | 50,000 – 85,000 BTU |
| 24 ft Round | 200,000 – 250,000 BTU | 50,000 – 110,000 BTU |
| 27 ft Round | 200,000 – 250,000 BTU | 100,000 – 120,000 BTU |
What size heater will be required to heat the water in a swimming pool?
The pool’s surface area divided by three gives you the minimal BTU size recommended for that particular surface area. Continuing the example above with the 15 x 30 pool, after dividing by 3, you get 150. Therefore, the minimum size heater that is recommended for a 15 x 30 pool is 150,000 BTUs.
What size pool heater do I need for a 18 pool?
Recommended Gas-Fueled Pool Heater Size Based on Pool Size
| Pool Size: | Recommended Heater Size: |
|---|---|
| 16′ x 32′ | 250,000 BTU |
| 18′ x 36′ | 325,000 BTU |
| 20′ x 40′ | 400,000 BTU |
How do I choose a pool heater?
Calculate the pool surface area in square feet by multiplying the length and the width of your pool. Then, use this formula to figure out the BTUs you’ll need your heater to put out: pool area (sq. ft.) x temperature rise x 12.
How much can a pool heater heat a pool?
Pool heaters can operate between 80-95 percent efficiency; if we conservatively estimate using 80 percent as an average, a 400,000 Btu heater will actually output only 320,000 BTU’s per hour.
