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HOW DOES A SOLAR POOL HEATER WORK?

solar pool heater pool equipment plumbing diagram
solar pool heater diagram, how solar pool heating works

Operating a solar pool heater is straightforward and integrates seamlessly with your existing pool equipment once installed. The solar pool heater itself contains no mechanical parts but utilizes your pool's water pump to circulate water through the solar panels and PVC plumbing lines.  

 

Here’s how a solar pool heater works:

 

1. Pool water is initially pumped from your pool through the filtration equipment.

2. The water is then directed to the solar pool heater panel array.

3. As the cooler pool water enters the solar panels, it travels through riser tubes from the bottom to the top header pipes. During this process, the solar panels absorb and transfer heat stored from the sun to the pool water. 

4. The now-warmed water returns gently to the swimming pool, gradually increasing the pool water temperature until the desired level is achieved

 

Components of a solar pool heater system include:

 

Solar Pool Panels: Absorb solar heat and transfer it to the pool water.

Feed & Return PVC Plumbing Lines: Transport pool water to and from the solar array. 

Pool Filter: Removes debris before water enters the solar panels.

Pool Pump: Circulates water through the filter, solar panels, and back to the pool.

3-way Flow Control Valve: Controls the directional flow of pool water (on or off).

2-way Flow Control Valves: Manage the directional flow of pool water through the solar pool heater’s feed and return PVC plumbing lines.

Solar Pool Heater Array Layout
solar pool heater bottom end plumbing diagram

You can fully automate the daily operation of a solar pool heater by adding a solar pool auto-control package (including a controller, sensors, and a motorized flow valve) to your Deluxe kit. On sunny days, the automatic controller directs pool water to the solar pool heater array. The solar pool control box utilizes two thermal sensors: one near the solar pool heater array to sense solar radiant temperature and another in the pool water to measure current water temperature. Using this data, the auto controller decides when to divert pool water through the solar panels and when to bypass them.  

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