How Long Should it Take to Heat a Pool

by Celestial Solar | Apr 17, 2023

If you own a pool, then you know it’s common to feel the temperature of the water before you go in. When the water is cold, you feel less excited to go in. However, that is why having a pool heater can make your swimming experience more enjoyable. Warmer water means a longer swimming session. But how long will it take to heat your pool? Let’s take a look at the different types of pool heaters and see how long it will take to heat your pool to the desired temperature.


Overview of Heating a Swimming Pool 

Your swimming pool can provide many benefits. Whether you use it for relaxation, muscle rehabilitation, or the main oasis for a party, you want the water to be comfortable. A cold pool can turn away people instantly. That is why having a heated pool is sought after for many pool owners. The last thing you want is to swim in cold water.


The process of heating your pool is fairly straightforward. The difficult part you will have is determining which type of pool heater you want to install. The main types of pool heaters are:

The ability to heat your pool means a longer swimming season and swimming sessions. Even on cold nights, a heated pool can still be enjoyed the same way as it is on a hot summer day. That is why people buy pool heaters. However, which pool heater is the most efficient in heating your pool? That is a factor that affects purchasing habits for consumers. Let’s take a look.


 How long Does it Take to Heat Your Pool 

As a general rule of thumb, it can take anywhere from 8-48 hours to increase the temperature of an average size pool (around 15,000-20,000 gallons) by 10-15 degrees Fahrenheit. In addition, there are also calculations you can use to get a better understanding of how long it will take to heat your pool depending on the type of heater you use.


Despite different heating efficiencies, you must remember that each type of pool heater comes with its own costs, with a gas heater being the most expensive and a solar pool heater being the least expensive. In addition, there are many external factors that affect the heating process.


Factors Affecting Heating Time 

While the efficiency of a pool heater can vary based on the type you have, the heating time is all affected by the same factors no matter which pool heater you have. Several factors can affect the time it takes for a pool heater to heat a pool which include:

A temperature thermometer.

  • The size of the pool is a crucial factor since larger pools require more time to heat up.
  • The outdoor temperature also plays a role as it affects the heat loss from the pool. Windy conditions, for example, can cause heat to escape from the pool more quickly, leading to longer heating times.
  • The initial temperature and desired temperature of the pool water can impact the heating time, with colder water taking more time to heat up.
  • The usage of a pool cover can significantly reduce heating time by preventing heat loss and retaining the warmth in the pool water.



The time it takes to heat a swimming pool can vary depending on several factors such as pool size, weather conditions, and heating system efficiency. However, it is important to ensure that your pool heating system is optimized and fits your needs to achieve the best results. Choosing the right pool heater for your needs has several purchasing factors.


If you’re looking for a reliable and efficient solar pool heating system, look no further. Our team of experts can help you choose the best system for your needs and ensure a timely installation. Don’t let a cold pool ruin your summer fun, contact Celestial Solar today!


Additional Reading 

Top 5 Benefits of Solar Pool Heating

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Even when outdoor temperatures are on the mild side, you can make sure your pool is warm enough to go swimming. Solve that problem with solar pool heating!
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