WOW THIS THING IS AT 195 TO 200 DEGREES!!! My 8ft by 8ft Solar Water Heater for my pool using 216 drilled aluminum cans, two 4×8 sheets of OSB, two 4×8 sheets of silver back poly board, six 8 ft 2×4’s boards, four 8 ft 2×2’s, 20 cans of black flat spray paint, 160 ft of Pex Line and brass Pex fittins/Pex nails. The end result will show the full build with four sheets of 2×8 Plastic Lexan attached and sealed on the edges with formed rubber. I attached the lumber together using hex deck screws. The entire box is sealed with 100% silicon. The in and out hose fittings are plastic because the chlorine in the pool was deteriorating the brass fittings. I also spray painted the hoses black. I used a small low flow centrifugal force fountain pump for the water flow. The water coming out of the hose is around 110 degrees on an 80 degree day and around 150 degrees in the box. The box is connected to post in the ground using nuts and bolts so I can rotate the box at different angles during the day, depending where the sun is in the sky. Hope you like my videos and share them as well. Any questions just ask. Thank you.


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  1. I just built mine and I was finally able to get the plexiglass to cover. Is it because I didn't have the plexiglass the water wasn't getting hot? I used Pex 100 foot tubing, sprayed with black paint and it's in the sun but the water has been coming out at the same temp it's pulling in. I read that the water flow should be normal and not slow. But after a week with 90 deg temp here in philly, i'm not seeing the hot water. How long should it be in the sun before the water feels hot?

  2. Install a t-bar with a shut-off on the return line to the pool… a couple dollars and you can clean up all that hanging hose.

  3. If you increased the flow, you would get more heat transfer from the tubing to the water. It may not come out steaming hot but it will increase your pool temperature faster being that more water it being pushed through exchanging heat from the tubing and cycling through the pool more often.

  4. Hi i have a 16×48 intex pool and i make a pool heater with 100ft black rubber garden hose but o dont see to much diference what do you recomend me?

  5. This is the future. It's like looking at the first locomotives in the early 19th century. Imagine a large roof with tubing like this, feeding hot water into underground insulated storage tanks. That'll store enough heat for free central heating for the entire winter. The only expense would be the trivial amount of electricity required for the pump, which would itself be powered via EV solar panels.

  6. Very cool build. I'm wondering how many years it lasted? Pex is max rated for 200 degrees, so I wonder if it shortened the life going past that on super hot days?

  7. Hi Mike – Is this still running well for you? Are you sure the drilled aluminum cans are causing an increase in temps?

  8. Hey! how is the system holding up ? do you still use it, also can you give me a rough estimate on the cost?

  9. out of all the folks i watched on you tube i think your are producing the hottest water,my 24ft round 52inch high pool is getting installed in june. i plan on making a replica of your solar heater,great job guy. appreciate u putting this out here for us to learn from.

  10. How fast did it ake to warm your pool at the flow rate you are using. We are in Colorado and have built the solar as you describe now how long to get the glacier water to warm LOL We have lots of sun so it will be able to run all day hot.

  11. how many feet of hose did you use? are the cans just empty pop/beer cans, painted black?
    thanks. from Orillia Ontario

  12. Pex line is rated at 180 degrees. How is it holding up? Also, I've read the fittings burst much sooner. Please advise.

  13. Hey Mike, just wondering what the voltage of the centrifugal pump is that would not be too less or too much. We built ours from using your videos. We are in Newfoundland, Canada so we get a lot of rain, fog and overcast.

  14. Looks good Mike. What size line/tubing did you use 1/2"? what would you say your total cost would be for that build? I'm going to try it as well. Thanks for the posts!


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