DIY Solar Water Heater! – Solar Thermal COPPER COIL Water Heater! – Easy DIY (Full instr.) 170F



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DIY Solar Water Heater. A Homemade “flat panel” COPPER COIL Solar Water Heater. Easy DIY. Full Instructions. super hot temps (sustained at 165F+). fast hot water. no electricity needed. easily hooks up to standard water tap/garden hose. reaches temps well over 150F (water pasteurization temp) so it works to clear/kill any pathogens (if a non-municipal source is used). it’s super portable so it’s good for camping/off-grid/emergency as well as everyday use. couple of notes: water flow rate verified with a measuring cup and a stopwatch. (roughly 1 oz. of hot water every 1 to 1.5 seconds and scaled up – one gallon every 2-3 minutes or 20-30 gallons per hour). about the copper tubing: a 50 foot roll of tubing is much cheaper than smaller rolls connected. *only $24.95 for 50 ft (but $17 for a 20 ft roll and $10 for a 10 ft roll). the glass is just standard window glass and the paint is flat black. it’s thin flat design allows it to be easily stored in a closet, under the bed etc… *”seal it” according to your climate conditions and whether you plan to leave it outside.
UPDATE: (06/01/2018)… if interested, here’s a youtube video link to my other (most current) copper coil water heater. It’s of a similar design but is lined with aluminum sheeting and uses larger diameter coil.

42 thoughts on “DIY Solar Water Heater! – Solar Thermal COPPER COIL Water Heater! – Easy DIY (Full instr.) 170F

  1. Nice water heater for my pool. Do you know at what speed/rate is the water going into the coil to get those temperatures out of it? Why much time does the water need to spend inside the coil to get really hot out of it? I am trying to build my system with 1/2" copper tubing and would consider replacing the tubing with 1/4" coil, as you suggest to get hotter water "faster" due to the smaller diameter tubing.

  2. Now if you install glass ball on top of copper coil pipe at right distance so the glass ball can act as convex lens, it will increase efficiency of water heating. A smaller version of this glass ball, watch video "Spherical Solar Energy Generator Rawlemon – BTF".

  3. La tubería de cobre es la mas efectiva pero su precio es bastante alto. Existen mangueras de riego casero que si se pintan con aerosol negro funcionan de la misma manera que el cobre pero con la desventaja de que puede llegar a agrietarse y quebrarse con muchos ciclos de luz y calor. Pero aun así podríamos tener agua caliente tanto en verano como en invierno. Sólo es cosa de un poco de ingenio y paciencia. México agosto 2018.

  4. Cool idea, cause running you hot water tank cost about 75 bucks a month running it on electric> if you can put a timer switch on it save ya some big bucks , like time you use hot water dishes showers at late evenings NO NEED OF IT RUNNING 24 hours a day

  5. I am trying to build your design. love it. I purchased a sheet metal. screwed it onto the 5/8s plywood shiny side up. but I had major trouble trying to bend the coil to space it apart a bit so sun would pass between and reflect off the sheet metal. however my BIG QUESTION is that Id like to build a TANKLESS solar water heater. Looking at your temperature as it comes out. it appears to come right through it and come out at 150 degrees. so can this design work without a tank? to be used as a TANKLESS Water heater: You can contact me at (Jin Ion ) On Facebook my profile picture is a modern stylized Egyptian scarab, beetle with piano key wings. So if you can help me with a little info… I am currently working on mine. got all the materials and trying to build it.. Irony is I have TWO solar water heaters out back but they are 9 feet long X 3 feet Wide and 8 inches tall. hardly any coper inside it and the copper as far as I feel the company build solar water heaters are a GIMICK!! Especially when i see the way you designed yours.. it works.. theirs just supposedly help lower the power bill of the average homes water heater that heats water all day and night using electric 247 for a household that might take 3 to 8 showers a day depending on how many kids you have and how many sneak off to avoid a shower as kids often do. Anyway, Im really hoping I can go Tankless instant solar water heater..

  6. فكرة جيدة لاكن الخشب عازل للحرارة ممكن وضع صاج من الحديد يكون افضل والحرارة تكون اعلا بكثير من ارضية الخشب ولكم مني كل الإحترام .

  7. I remember this guy who had a. Giant(4' across 18" deep ) bird bath looking thing next his pool that had a huge copper spool in it. And his pool pump was hooked up to it and his pool was a jacuzzi it would stay 100° like it was nothinhg ….. His uncle was a contractor who put the pool in and didnt want to pay to heat the pool …he lived next to phoenix college ….

  8. Good afternoon! I live in Brazil, I wonder if I install a 100 Liters reservoir I get the effect of thermosifao cold water leaving the reservatoria pass on the plate and return warm? Thankful.

  9. What's the volume versus the flow? or is it contentions heated to 150 degrees all day long if it is a flowing. Or, are we talking about a gallon of hot water heated up one at a time? AND if so what's the time to heat to 150 degrees per gallon. , Just a wondering if you could take a long shower or is the flw to slow.

  10. Thinking about putting copper tubing coil in a water tank. The hot water will circulate through the copper coil heating the water. When the water gets hot the circulation will stop until it cools or you use some hot water putting cold water in.

    The water will be heated using coraplast with water running through it from a pipe on one end out of a pipe on the other end.

  11. Just curious on how you would control the temperature, remember that we usually set up the heaters around 120 F to avoid scalding, I found this same set up in older building roofs for the same purpose but they compliment them with mixing and control valves.

  12. This is awesome. I'm building it this weekend to use as a pool heater this summer. Can you please tell me how thick the 20×20 wood is that you zip tie the copper pipe to? Also what are the lengths of the square dowels and what is the thickness of the glass? Thanks!

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