# Question: How Many Btu For Pool Heater?

## How many BTUs do I need for a 20000 gallon pool?

20,000 gallons x 8.3 lbs / gallon = 166,000 lbs of water that needs to be heated. Since it takes one Btu to heat one pound of water by a single degree, we now know that raising this entire 20,000-gallon pool by one degree will require 166,000 Btu of heat energy.

## How do you size a pool heater?

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 40000 gallon pool?

EXAMPLE: To raise the temperature to a 40,000 gallon pool 2o per hour, the heater should be approximately twice the capacity of a Model DR or F650-WP – selecting a Model CLM150-WP (1,500,000 BTU).

## How many Btus does it take to heat a 40000 gallon pool?

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.

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## Can you oversize a pool heater?

A pool heater can be undersized: if it cannot replace the heat lost through evaporative cooling, the pool’s temperature will fall below the ideal. However, there is no such thing as oversizing a pool heater. The larger the heater’s output, the faster it heats the water in the pool, and it will not begin short-cycling.

## What is the best heater for a pool?

Best pool heaters 2021

1. Pentair 460737 MasterTemp: Best propane pool heater. (Image credit: Pentair )
2. EcoSmart Smart Pool 18: Best electric pool heater.
3. Hayward HeatPro HP21404T: Most economical pool heater.
4. Hayward H-Series H250FDN: Best natural gas pool heater.
5. SmartPool SunHeater S120U: Best solar pool heater.

## How much gas does a 400k BTU pool heater use?

For a typical size 400,000 BTU heater, that equals 4 gallons an hour. Currently, propane costs between \$4.50 to \$5 per gallon.

## What is a good pool size?

For a family of 8 people, a pool size of 18 by 36 feet is adequate. Even if you all decide to swim at the same time, there will be enough space for everyone. A rectangular shape is the best choice for this size of the pool. If there are six or less in your family, a pool size of 16 by 32 feet will be sufficient.

## How do I choose a pool heater?

Choosing the perfect pool heater will depend on where you live and what type of heat source is available to your home.

1. If you live in the north with access to natural gas, choose a gas heater.
2. If you live in the north with no natural gas, invest in a heat pump.
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## How fast do pool heaters work?

It depends on a few things to determine how long it takes a heat pump to heat a pool. However, overall a heat pump generally heats a pool after 24 to 72 hours by 20-degrees Fahrenheit. For smaller pools like a spa pool, the heat pump can heat a pool between 45 and 60 minutes.

## Should I heat my pool?

Taking into consideration the need to conserve energy and to minimize fuel consumption, any unnecessary pool heating should be avoided. You are the best judge of the kind of use you want out of your pool. Use of your pool for recreation, exercise, therapy or just general enjoyment obviously will require heating it.