# Quick Answer: What Size Heater Do I Need For My Pool?

## 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.

## 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.

## What size pool heater do I need for a 50000 gallon pool?

For inground pools less than 20,000 gallons, small gas heaters like the Raypak 206K BTU output are suitable. Pools up to 30,000 gallons should look at the Pentair 300K BTU or higher, and pools over 50,000 gallons should look at the Hayward 500K BTU.

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## Can a pool heater be too big?

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 average life of a pool heater?

You can expect a gas or heat pump pool heater to last 8 to 11 years, with an average of 10 years. Regular usage and maintenance is key to a longer lifespan.

## 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.

## What is the best pool heater for inground pools?

Here, the best pool heaters to keep your water temperature constant for the whole swimming season.

• Best Overall: Hayward W3H150FDN Universal H-Series 150,000 BTU Pool and Spa Heater, Natural Gas.
• Best Solar: Smart Pool S601 Pool Solar Heaters.
• Best Electric: Ecosmart US SMART POOL 27 Electric Tankless Pool Heater.

## 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.

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## Is solar pool heating worth it?

You can significantly reduce swimming pool heating costs by installing a solar pool heater. They’re cost competitive with both gas and heat pump pool heaters, and they have very low annual operating costs. Actually, solar pool heating is the most cost-effective use of solar energy in many climates.

## Are electric pool heaters loud?

Swimming pool heaters do make noise, but if your heater begins whistling, it’s time to put on your detective hat. If you have problems with either of those, you may hear whistlingâ€”the whistling noise results from the burners. Check your gas pressureâ€”low pressure can noise in the burners.

## 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 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.