10 Ingenious Homemade Air Conditioner Ideas

Categories: DIY, Tech

There are all kinds of DIY air conditioners you can make at home. Some are easier to make than others, but they all work quite well. The 5 we came up with will keep you cool, and they only cost a few cents per day to run. Most of them can be made for $15 or less.

Here’s what one of our readers had to say about one of the AC’s below “I know from personal experience. Using this little contraption in place of our AC last Summer saved us $$200 a month”

These are meant to be room, or space coolers. Some of them can be used in your car if the AC is not working, or to keep your pets cool if they ride with you. You could can even hook some of them up to a solar panel and save even more!

These homemade air-conditioner designs take the mystery out of cold-air production. Some are complicated, some are cheap and simple, some run on alternative energy, and the last one is so out there that you'll just have to try it.

The California Cooler is a revival of an old technology driven by an insight that's overlooked in these days of engineered indoor environments: Cool air keeps things cool. In the days before refrigerators, pantries in Northern California homes had outside vents that preserved perishables throughout cool nights. With this project, you can bring them back.


  Afraid your baby's seat is getting too hot? A cooler, a bilge pump, freezer packs and tubing will keep you and your baby cool.


  Consider these two facts: Evaporation cools things, and bottles can't sweat like people. If they could, they would be able to keep their own contents cool. Here's a way to give your drinks their own perspiration system.


  This is a $10 air-conditioner built around an ice chest. The coolant is, you guessed it, ice. It's practical and cheap, but even if you don't plan to make one, click through to read the back story of how it was conceived. The main character is an electric truck circa 1979, with cameos by store-bought $500 portable A/Cs and a Tesla Roadster.


  Air conditioners can dump hundreds of gallons of water each year. With a pump and some creative pipe work, you can channel that otherwise wasted water into your garden.


  The mastermind behind these instructions built an air conditioner to circumvent a rule in the office. Apparently, they can't use A/C, but fans are just fine. So, this DIYer rigged an A/C by pumping cold water in an ice chest through copper tubing positioned in front of a fan blade.

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