What Size Pool Heaters are Suitable for 20000 Gallons Water?

As same like the swimming pools, the swimming pool heaters also comes with various sizes which starts from small range as 100 BTU’s to the largest 400,000 BTU’s output per hour. The smaller size heaters are slower to heat the swimming pools and they will operate more often to keep up with the output of larger heaters.

The larger size heaters are a small bit efficient than the smaller pool heaters. The use of pool cover to retain the heat and installing the fences or other wind obstruction can reduce the demands on the pool heater and also they will affect the pool heater size.

There are many types of pool heater are available in the market-based on the type of fuel they used for running. The gas pool heaters are one of the type of water pool heaters, by using which you can heats a 400 BTU and it is usually used for fast heating of water pools as approximately 15 to 30 minutes of heating of an attached hot tub.

A smaller size pool heaters can also used to heat the spa, which will take longer time to heat the pool. If you are using a spa solar blanket cover which can reduce the heat up time by few minutes. On the other hand, the custom-made insulated spa tops can keep most of the heat inside the spa and have it ready for the moment which you want to use it.

If you want to know the correct size of your pool heater, then you need to use the anticipated usage of the patterns. If you will be heating the pool intermittently on the week, then you need a fast heat up and the gas heaters which only add 1-2 degrees of heat per hour to the average pool. The large size heater are consider as the best one for using this usage pattern.

If you are expect to be maintaining a temperature by setting thermostat and may be missing a few degrees in the weekends and evening, then a smaller size pool heaters can used for heating it. The smaller size heater have to run more often to maintain the heat such as compared to a larger heater, which is slightly less efficient than smaller ones.

Here we are list out the some of the common size of heaters with its surface area coverage and the amount of water gallons in the pool,

  • 100 to 200 BTU heaters are having up to 300 sq ft area and suitable for 1000 gallons to 1000 gallons,
  • 200 to 300 BTU heaters are having up to 500 sq ft area and suitable for 10,000 gallons to 20,000gallons,
  • 300 to 400 BTU heaters are having up to 800 sq ft area and suitable for 20,000 gallons to 40,000 gallons,
  • 400 BTU heaters are having up to 1200 sq ft area and suitable for 40,000 gallons to 80,000 gallons.

You can buy a correct size heater for your pool.

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