4 Factors And 2 Calculations To Estimate Pool Heating Requirements

Imagine yourself immersing in the hot springs of Japan in the midst of a cold New Year’s night. Having to relax in a warm pool on cold days is a really great idea. If you don’t have natural hot springs near your pool, then installing a pool heater is the best thing you can do. Heaters work every day of the year, of course, and that’ll come in handy when the weather is unpleasantly cooler any time of the year.

Getting your pool to the desired warmth will not be an easy decision to make. However, once you study the different factors affecting your pool, you will likely select the matching pool heater with the right power output. The most difficult factors to quantify and judge is the interplay of the different factors regarding pool usage and heat loss.

So, how are heaters rated? The power output of pool heaters is measured in BTUs per hour. All manufacturers, primarily the popular and ever-reliable Hayward brand, base their standards on BTUs. For heavy duty use, Hayward pool heaters are rated 100,000 BTUs, 150,000 BTUs and 250,000 BTUs per hour.

Here are the factors you should consider before buying a pool heater:

Pool size – Consider two things: pool surface, because that’ll likely be affected by heat loss, and volume of water inside the pool to be heated.

Frequency of pool usage – How often is the swimming pool operational? It takes more energy to heat a pool that has become cold than too keep a pool constantly warm. So if you use a pool intermittently, like during the weekend only, then you need a larger heater.

Desired temperature – The air temperature is going to affect how much heating is required. Take the lowest temperature on the coldest month of your swimming season and subtract it from you’re desired temperature. Greater power output from Hayward pool heaters is needed for greater temperature differences.

Location of pool – The pool’s surface is constantly cooled by the wind, so it makes sense to warm a pool that’s been sheltered by the wind. A sheltered pool will take shorter time to heat and cost lower energy to maintain heated. Additionally, heat is constantly radiated to the cooler environment, so you should cover your indoor or outdoor pool during the initial warming process, and while not in use. Studies show uncovered pools can lose 4 to 5°F overnight. Pool covers decease that by half.

Heating formula:

Heating needed = [(water volume in gallons x 8.34) x (temperature difference)] / 24

The heat loss factor is between 4 and 7 in a sheltered location with 2 to 5-mph winds:

Heat loss from surface alone = (heat loss factor) x (temperature difference in °F) x (surface area in ft2)

The two calculations are added for a good estimate of heating requirements. Small factors like location, ground temperature, and specific pool activities can accumulate, increasing or decreasing heating requirements. In effect, larger Hayward heaters may make up for any unexpected scenarios.

Calculating your pool heating requirements may be a big and complex task, but, fortunately, there are different Hayward pool heaters for your specific heating needs. Visit Poolproducts4less.com.


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