Pool Heater Sizing By Gallons

In order to make an informed decision about what size of pool heater you need for a given application you need to know the following.

Pool heater sizing by gallons. The exact time needed to change the pool temperature will vary based on evaporation rate convection losses thermal radiation losses and conduction losses explained more below. Heater efficiency is the ratio of output to input typically displayed as a percentage. The heater input is the energy still in btu s that is used to generate the output heat. Up to 300 sq ft.

Hayward s pool heater saves money by being the most energy efficient solution for any pool spa. Btus per hour required are. For rapid comfort we offer the universal solution. In fact a lot of pool professionals will recommend that you oversize your pool heater by a slight margin to compensate for things like unexpected weather changes future pool upgrades hot tub spa fountains etc.

Another example if your pool is 15 000 gallons. Average length x average width x average depth x 7 5 volume in gallons. It s designed for ultimate performance comfort and durability while being environmentally responsible. 1 the volume of your pool 2 the temperature of the water you like to swim in.

I mean the gallon size is important just in a roundabout way. In fact there are some websites that do use the number of gallons. 1 the volume of the pool. Heater sizing charts often express the required heater output necessary to achieve the desired temperature rise for the pool s surface area or volume see chart 1 below for a generic example.

Most heater sizing charts assume a 24 hour heat up time. In order to make an informed decision about what size of pool heater you should get you will need to know the following information. Sizing and buying a pool heater is more complicated than just knowing how big your pool is. The heater output or btu is the energy that the heater will transfer to the pool water.

Sizing your heater is a complicated matter and more often than not you will be fine with a slightly oversized pool heater. 10 000 gals to 20 000 gals. This calculator is approximate because it doesn t account for the many factors that impact heat loss in the swimming pool. 27 x 5 206 140 562 btus.

100 200 btu heaters. Because heaters are rated by their input however you must know the heater efficiency to determine what size heater is required to do the job. Surface area of pool. When you are determining which size pool heater to buy the first step is calculating your pool s surface area.

15 000 x 8 33 124 950 divide by 24 5 206 pool is at 55 f and required temp is 82 f so rise is 82 55 27. A lot of pool owners assume that you use your pool s gallon size to determine your heater size. Pool heater sizing considerations. It is a good idea to add an extra 15 20 to the heating capacity you arrive at to make up for inefficiencies in the system.