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Landscape tubing
Our very simple, DIY solar pool heater uses a photovoltaic (PV) module to provide free power when the sun shines, which is when you want the pump to run. It also uses a small, DC submersible pump and some black landscaping tubing.
You can also use the existing pump to run your DIY system, but be aware of the extra cost for electricity to run the pump. If you place your tubing on a roof, you can add a lot of strain to the existing pump. This could shorten the life of the pump and could also make a rather large increase in the amount of electricity used by the pump. As well, you want the solar pool heater to run during the daylight hours. This is often when electricity cost the most and may not coincide with your optimal pump running hours. A PV panel and small submersible pump could pay for itself in just one season.
Materials for Solar Heater
12 VDC Submersible Pump
submersible 12 VDC pump - around $40
solar PV panel - around $130
1,000 feet of 1/4", black, plastic landscape tubing - around $30
joiners and junctions for tubing
mounting for tubing (optional)
Solar Heater Assembly
cut tubing into lengths. Don't make tubes too long (100') as water will get too hot before it comes out. Better off making parallel tracks and keeping them shorter.
arrange tubes and make connections. Using "T" joiners and junctions, assemble your panel.
optional - mount tubing to a sheet of plywood painted black. You can also just lay the tubes on the ground near the pool. If placed on cement, they will pick up heat reflected from the cement.
place panel in sun. You can lay the panel on the ground or slant it towards the sun. Try to keep the panel low to the ground to reduce pressure on the pump (head). If you want to put the panel on a roof, you may need to purchase a more expensive pump that can handle the pressure (head).
connect tubing to the pump
Aim PV panel at the sun and connect to the pump. Drop pump in water.
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