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Guidelines for
Sizing a Solar Pool System

Guidelines for Sizing a Solar Pool System

1) The solar collector area is based on the surface area of the pool (length x width).

2) The solar pool collectors come in 3 sizes: 4x8, 4x10 and 4x12. Divide the gross collector area (32 sq. ft., 40 sq. ft., 48 sq .ft.) by the surface area of the pool to determine the size of the system.

3) The percentage of collector area to the surface area of the pool determines the length of your swimming season. 50% coverage = 6 months, 75% coverage = 8-9 months (75-95 degrees).

4) If you do not have a due south exposure you may also go with a southeast or west exposure. You may want to increase the collector area up to 25% if you are due west or east. A due east exposure will give you about a 6 month season.

5) For the most part a solar pool system will require a gas back up in the winter months because the days are shorter and the nights are colder.

6) Determine the ABC’s of solar.

A) The location of the collectors.
B) The location of the pool equipment.
C) The location of the piping between A and B.

7) Example: Pool area 15x30=450 sq. /48 sq. ft (Panel area)= 9.37 panels @100% coverage. 50%= 5 panels. 75%= 7 panels. Note: The maximum system size, facing south, is 80% coverage. Additional coverage will not increase your season.


1. Performance: The Florida Solar Energy Center (FSEC) is the National Test Center for certifying the thermal performance of all solar pool collectors sold in the United States. How many BTU's of energy per collector or per square foot?

2. Durability. How long will the material last? What are the Emmaqua test results from Atlas Weathering Services Group in New River, Arizona?

3. Solar Investment Value. This is the combination of Performance Plus Durability giving you the highest return on your solar investment.