What Size Pool Heater Do I Need – Complete Guide

What Size Pool Heater Do I Need

Pool heaters permit you to unlock your pool in early spring and expand the swimming period even into the fall. They’re a considerable effort, so do some research before buying one. What size pool heater do I need?

The surface area of the pool, the beginning temperature, air temperature, preferred water temperature, and how rapidly you would like it to heat all play a part in influencing the actual size of the heater you will need in the pool.

You can select the correct size heater for the pool and its requirements by considering various aspects. So, unless you select the pool heater carefully, you might waste a great deal of time and resources in the long run.

In this article, you’ll learn what size pool heater do I need. And also, learn pool heater size calculator, pool heater size chart, and others.

What Size Pool Heater Do I Need?

When are you trying to figure out what size pool heater do I need? The size of your pool will determine the best pool heater for you. Larger pools require larger heaters, while smaller pools require smaller heaters.

Whenever you plan on simply allowing the pool to relax between uses, a quicker heater may be preferable because it will warm it up more quickly. You did not have to stand by as long between deciding to swim and entering the pool this way.

You’ll need a good-sized pool heater to enjoy your pool conveniently at the required temperatures. To find out what size pool heater do I need? Use a pool size calculator to determine your pool size, and then pick the heater that matches that size.

When it comes to pool heaters, there are a few points to think about:

1. Size Of Pool Heaters

The implementation will probably never work if you don’t purchase the correct size heater for the pool. When selecting the correct heater, the pool’s area must be considered, as well as the distinction between the amplified air temperature and the pool’s temperature.

Wind exposure, moisture levels, and the coldest nighttime temperatures can all impact the pool heating system’s performance.

2. Efficiency

It’s all about the cost of performance (COP) when it comes to performance (COP). The greater the COP, the more energy-capable the pump is. A heat pump pool heater is typically tested with an outside temperature of 81 degrees to determine the COP.

The normal COP range is 3.0 to 7.0, implying that it operates at a 550 per cent capability – one power supply is converted into three-seven units of heat.

3. Cost

Cost is another essential factor to think about it. Heat-pump pool heaters can be up to 81% less costly than propane gas heaters. For these variables, it’s best to have an expert size and insert your pump.

The estimated cost of a pool heater and its liabilities range from $1350 to $9700, so it’s crucial to evaluate your options before settling on a unit that’s right for you. It usually necessitates some research, but it will save you a lot of money and time before you invest.

4. Environmental factors to consider

The majority of pool heaters are eco-friendly. Advanced gas and propane heaters are more energy-efficient than older versions and far more convenient than an oil heater.

Heating systems are even more eco-friendly than natural gas and propane, and solar heaters are the most cost-effective and ecologically friendly choice. However, they are also the cheapest in power.

As a pool owner, there are also other options for using a pool heater

  • To let the pool cool down when not being used, switch on the heater before swimming to bring the temperature back up to your desired level.
  • Leave the heater on, allowing your pool to be prepared for a swim every time.

Also Read: How Much Does It Cost To Heat A Pool?

Pool Heater Size Calculator

There are the following steps you must follow:

Step.1: Calculate Your Pool Surface Area (Length x Width)

Calculate Your Pool Surface Area

The first stage in determining which size pool heater to purchase is to calculate the pool’s surface area. Many pool owners believe that the gallon capacity of the pool determines your heater size.

If you have a big pool, the temperature has more area to break away from and, as a result, there is much more water to warm. As a result, the heater must be large enough to compensate for the pool’s size and surface area.

Step.2: Divide Your Pool Surface area by 3

When you’ve calculated the pool’s surface area, magnify it by 3. It is the smallest BTU size that is suggested for that surface area. Proceeding with the 16 x 32 pool as an instance, dividing by 3 returns 512.

As a result, for a 16 x 32 pool, a standard size heater of 512,000 BTUs (British Unit Thermal) is suggested. Remember that this is only a suggested minimum size. We would never go that low, but we may have to go quite a greater distance.

When it comes to propane heaters, it is always a good idea to go big. A pool heater’s role is to replace the heat lost through evaporation at the pool’s surface. The majority of heat loss occurs in the dark.

No reason to compensate for the loss without needing a solar cover. So when a larger BTU capacity comes in handy.

Step.3: Think about your variables

Recognize all factors that can influence the effectiveness of the heater, like whether you have a solar shield, the air velocity, and how you swim, once reaching a choice.

Based on the user’s tastes, we might suggest the 300 k or 350 k BTU design for a 16 x 32 pool with no solar shield. Therefore, all considered are heat loss, evaporation, and unpredicted windy situations. Pool owners who choose to swim at bedtime are also considered.

In the aspect of giving high-quality heat in the minor period, using a sunlight blanket in combination with the heater is the most excellent duo. You may not require a 350K BTU heater with a sunlight blanket.

You could opt for a heater with a temperature range of 250–300 degrees Fahrenheit. Investing in a sunlight blanket rather than a bigger heater is often more cost-effective.

Pool Heater Size Chart

What size pool heater do I need? It depends upon the size of the pool. Below is the chart that will help buying the best pool heater.

Pool Heater Size Chart

FAQS: What Size Pool Heater Do I Need?

Good pool heaters enable you to swim year-round, despite the weather or environment. Electric pool heaters are a great suggestion because they avoid the hassles of propane heaters.

The ideal electric pool heater is the Hayward HP21404T Heat Pro and Fibro Pool FH055 Heater. It is dependable, energy-efficient, and will increase the water temperature, enabling you to use your pool whenever possible.

Increase the pool's surface area by the temperature increase. The heater's needed Btu-per-hour result is calculated by multiplying the outcome by 12. Depending on an average wind speed of 3.5 miles per hour, this figure shows the heater outcome required to heat the pool to the appropriate temperature in 24 hours.

The Bottom Line

When you’ve considered everything, you’ll be able to determine what size pool heater do I need? The BTU (British Thermal Unit) calculates the minimum effort the pool heater consumes to heat your pool to the appropriate temperature.

However, pool heater working costs should be considered when determining your choice. Also, the heater’s volume must be determined by how warm you want the pool to be and how quickly you would like it to warm up.