| ★ |  DIY Pad-less Evap. Humidifier (w/"lighted" water-tank) 12-16 hr run 500-1200 sq. ft. no pad/no mold! | | 821 | Estados Unidos | |
| 13 |  I made my whole-home humidifier slightly less terrifying | Technology Connections @technologyconnections | 637.0K | Estados Unidos | 88 |
| 15 |  DIY Solar Water Heater! - Deluxe "Aluminum backed" COPPER COIL Solar Water Heater! 175F Full Instr. | | 29.7K | Estados Unidos | 88 |
| 5 |  DIY Evap Air Cooler! (Simple "Box Fan" Conversion) - Homemade Evap Air Cooler! New Design! Easy DIY | | 23.4K | Estados Unidos | 88 |
| 1 |  DIY "TWO STAGE" Indirect Evap Air Cooler! No added Humidity! brand new! 2 fans/2 pumps/2 radiators! | | 13.4K | Estados Unidos | 90 |
| 9 |  Deluxe DIY Air Cooler! w/Built-in Radiator & Air Filter! AC/DC 12V! Low Temps (360 nozzle) solar op. | | 10.7K | Estados Unidos | 88 |
| 2 |  DIY Two-Stage "5 Gallon Bucket Air Cooler!" w/radiator and variable speed fan! strongest cooling! AC | | 10.7K | Estados Unidos | 89 |
| 7 |  DIY 12V Air Cooler! very cold air! 20w (AC or DC) - Radiator w/Stand + Hi-Speed.Fan! modular design! | | 10.1K | Estados Unidos | 88 |
| 17 |  Your room air is drier than you think 👀💨 | | 3.3K | India | 87 |
| 16 |  High Power DIY Ceramic Air Heater! Output Air 200F/93C! (w/adj-speed fans) 18/20a AC/DC solar/bat op | | 2.1K | Estados Unidos | 88 |
| 20 |  DIY Space Cooler! "Peltier" AC Air Cooler - 100w/200w 12v (12715 peltier module) - no ice needed! | | 1.2K | Estados Unidos | 87 |
| 10 |  DIY "personal space" novelty air heater! (burner+copper+fan) fan is heat powered! easy space heating | | 557 | Estados Unidos | 88 |
| 11 |  DIY Water Filter! Purifies Fast! easy to maintain! "shake style" filter! -made w/304 Stainless Steel | | 452 | Estados Unidos | 88 |
| 3 |  12v High-Speed Desk Fan with DIY stand! AC/DC Pwrd. (solar/battery) - very high airflow! | | 398 | Estados Unidos | 89 |
| 18 |  This Air Conditioner Operates Without Electricity ❄️😱 | | 359 | Brasil | 87 |
| 19 |  DIY Candle Powered Desk Fan! (using a strip of copper and a brick) tealight powered 3-speed easy DIY | | 317 | Estados Unidos | 87 |
| 6 |  Cheap home cooling with this simple setup - And energy efficient | The Solar Powered Engineer - Neil Dev255 @thesolarpoweredengineer | 158 | Reino Unido | 88 |
| 4 |  Humidifier & Diffuser: Must-Have Decor for a Cozy Home! #Diffuser #Humidifier #Decor | | 115 | Estados Unidos | 89 |
| 14 |  Cheap AC with Water. Cooling Home and Terrace by Evaporation. | epSos.de @funny-video-youtube-channel | 14 | Países Bajos | 88 |
| 8 |  DIY "Indirect" Evap AIr Cooler! Produces Cold/Dry Air (No Humidity!) - AC/DC - can be solar powered! | | 1 | Estados Unidos | 88 |
| 12 |  DIY Pool Heater! EASY & WORKS GREAT! #diy #pool | Creative Redneckin' @creativeredneckin7258 | 0 | Estados Unidos | 88 |