Turning sunlight into hot showers: best kits or hacks?

skier417957 · 2026-03-30T00:44:42Z

Been thinking about rigging up a solar water heater for the backyard (mostly for the garden hose and maybe the outdoor shower if I get ambitious). There’s a ton of info out there, but honestly, it’s a little overwhelming—some folks swear by the black hose-in-a-coil method, others are building these wild insulated tank setups with glass panels and copper pipes. I’m not looking to spend a fortune or get super technical, but I do want something that actually works and doesn’t fall apart after one summer. Has anyone here tried any of the simpler DIY setups? Like, is the coiled hose trick actually worth it, or does it just give you lukewarm water for five minutes and then go cold? I saw a video where someone used an old water heater tank painted black inside a wooden box with a glass top—looked cool but maybe overkill for what I need. Also, how much maintenance do these things need? I’m not super handy, so if it’s gonna leak all over or need constant fiddling, probably not for me. If you’ve built one that you’d actually recommend (or even if you tried and it was a total flop), I’d love to hear about it. Any tips on materials that hold up better in the sun? Or ways to keep the water from getting gross if it sits too long? Just trying to figure out if this is worth the effort or if I should just stick with cold hose water and tough it out. Anyone got stories or advice?

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Solar Water Heating

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- Flexible stainless is pricey, but I’ve seen it hold up way better than PEX in direct sun. Did a run with it last year—no sag, zero leaks, but man, those fittings are a wallet killer.
- Black steel’s solid, but unless you’re religious about paint and checks, rust sneaks up fast.
- Copper’s great for the hot spots, but costs keep climbing.
- Anyone tried aluminum with a good UV wrap? I keep hearing mixed things—some folks swear by it, others say it’s not worth the hassle.

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Turning sunlight into hot showers: best kits or hacks?

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