TAKING ROOF MEASUREMENTS
SOLAR POOL HEATING
After calculating how many solar pool panels your pool requires and the total square footage needed for 100% heating coverage, the next step is to measure your roof. Recording these measurements will verify the available space and help determine how many panels can realistically fit on your roof or structure before purchasing a solar kit.
Roof B
Roof A
In the example above, detailed measurements were taken of the roof areas best suited for installing the solar pool panels: the Southwest roof (Roof A) and the Southeast roof (Roof B).
Note: If your roof has obstacles (vents, chimneys, skylights, etc.), be sure to include them in your measurements.
After recording the measurements, we calculated the available square footage of each roof by multiplying the vertical length by the horizontal width.
Roof A:
Because the roof vents are close to the peak on Roof A, we used a 20' vertical length (VL) and 27' horizontal width (HW) to calculate available space:
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20' VL × 27' HW = 540 ft² available
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240" VL × 324" HW
Roof B:
Roof B has a skylight, so we used a 15' vertical length (VL) and 25' horizontal width (HW):
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15' VL × 25' HW = 375 ft² available
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180" VL × 300" HW
The Techno-Solis solar pool heating panel comes in three standard sizes: 4'×12', 4'×10', and 4'×8'. All panels are 48" wide, with a 3" mounting gap between collectors—51" total per panel.
Solar pool panels are typically installed side-by-side in a horizontal row, with each panel requiring 51" of width. The total array width should also include a minimum 3" of clearance on both sides of each row to allow space for the PVC feed and return lines.
Using the System Sizing Calculator, we determined we needed six Vortex 4' × 12' solar pool panels. Based on the space requirements chart above, this requires 12' 6" of vertical length and 26' of horizontal width.
In the examples above, we calculated the available square footage for Roof A and Roof B and confirmed that both roofs can fit six 4' × 12' panels. Because Roof A faces southwest and is closer to the pool equipment, it was chosen as the best installation location. Roof B can serve as a backup option or as space for additional panels in the future to increase heating performance.
