Table of Contents

**Heat Pump Sizing Chart – Inground Pools**

Pool Size (Feet) | Summer 4 BTU’s | Spring & Fall 5 BTU’s |
---|---|---|

Up To 10,000 Gallons 12′ x 24′ | 50,000 BTU | 50,000 BTU |

Up To 15,000 Gallons 14′ x 28′ | 85,000 BTU | 85,000 BTU |

Up To 20,000 Gallons 16′ x 32′ | 85,000 BTU | 110,000 BTU |

Up To 25,000 Gallons 18′ x 36′ | 110,000 BTU | 125,000 BTU |

## How Many Btu Do You Need for a 15000 Gallon Pool?

**Pools up to 15,000 gallons should look at the pentair 125k btu or higher**, and 20,000 gallon above ground pools should look at the raypak 150k btu. Pools in very windy or colder areas, or those that don’t use a pool cover should consider installing one size larger.

How many btus do i need for my pool? Determine btus needed to maintain your pool’s temperature to maintain the temperature, you need about 10 btus per hour, per square foot of surface, per degree above the air temperature. That means keeping a pool with a surface area of 300 square feet at 80 °f 60 °f weather would require 60,000 btu per hour.

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.

## How Many Btus Do I Need for a 15000 Gallon Pool?

Pools up to 15,000 gallons should look at the pentair 125k btu or higher, and 20,000 gallon above ground pools should look at the raypak 150k btu.

## How Do I Know What Heater to Buy for My Pool?

Btu output you can approximate what type of btu heater you need for your pool by multiplying your pool’s water capacity in gallons by the weight of a **single gallon** of water (8.3 pounds). The answer is the number of btus you need to raise the pool water by 1 degree.

## How Many Btu Heat Pump Do I Need for a 15000 Gallon Pool?

For reference, a 16 x 32 pool is roughly around 15,000 gallons of water. Looking at the chart above, we can see that **15,000 gallon pools require a heat pump with 90,000 btus**, which is right in line with our 92,160 btu figure.

What size pool heater do i need for 15000 gallons? **Pools up to 15,000 gallons should look at the aquapro 77k btu or higher**, and 20,000 gallon above ground pools should look at models like the tropical 115k btu. Pools in very windy or colder areas, or those that don’t use a pool cover should consider installing one size larger.

**The easiest way to calculate BTUs**

Pool Size | Gas Heater Size | Heat Pump Size |
---|---|---|

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 |

12 x 24 ft | 100,000 – 150,000 BTU | 70,000 – 85,000 BTU |

16 x 32 ft | 200,000 – 250,000 BTU | 110,000 – 120,000 BTU |

How do you size a heat pump for a pool? Find the volume of your pool, and pick a heat pump model with heating increase of 0.25 and above. The higher the number, the faster your pool heats up. For example, if you have an 50,000l pool then the **minimum recommended size would** be the 18kw model (0.27c per hour).

## How Many Btu Do I Need for My Inground Pool?

**Btu needed to maintain temperature to maintain the temperature, you need about 10 btus per hour, per square foot of surface**, per degree above the air temperature. That means keeping a pool with a surface area of 300 square feet at 80 f (27 c) degrees in 60 f (15 c) degree weather would require 60,000 btu per hour.

## What Size Heater Do I Need for My in Ground 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.

How do i know what size heater i need for my pool? Here’s the math: to heat your pool by 20 degrees in just 12 hours (i.e. Half the time), multiply the number of **btus per hour** by two. In our example this means that to heat your pool by 20 degrees in 12 hours you would need a heater with a capacity of 120,000 btus per hour.