| ★ |  DIY "personal space" novelty air heater! (burner+copper+fan) fan is heat powered! easy space heating | | 557 | Estados Unidos | |
| 9 |  DIY Solar Thermal Water Heater! - COPPER PIPE Solar Water Heater! - Easy DIY (full Instr.) 150F+ | | 36.0K | Estados Unidos | 92 |
| 15 |  DIY Solar Water Heater! - Deluxe "Aluminum backed" COPPER COIL Solar Water Heater! 175F Full Instr. | | 29.7K | Estados Unidos | 91 |
| 13 |  DIY Two-Stage "5 Gallon Bucket Air Cooler!" w/radiator and variable speed fan! strongest cooling! AC | | 10.7K | Estados Unidos | 91 |
| 1 |  DIY Sand Battery for Air Heating at home! *with "Copper Heatsinks! & Clay Pot Option w/heat pwr fan! | | 8.2K | Estados Unidos | 93 |
| 18 |  Diy Solar Hot Water System Overview and Operation!!! | | 3.6K | Estados Unidos | 91 |
| 20 |  How to Heat "Sand Batteries" using a Parabolic Dish or Fresnel Lens! Free Heat! DIY Air Heating | | 3.2K | Estados Unidos | 91 |
| 11 |  How to Make a "Sand Battery" Air Heater at home (w/copper, candles, sand and loaf pans!) w/heat fan | | 2.5K | Estados Unidos | 92 |
| 14 |  DIY Sand Battery Air Heater! 12v Radiant Air Heater! 25-40 lbs/sand! 160F/72C home/vehicle/tent heat | | 2.3K | Estados Unidos | 91 |
| 19 |  DIY "Family Size" Parabolic Cooker! Supercharged! XL "Solar Sizzler" Replica! solar stove burner | | 2.2K | Estados Unidos | 91 |
| 2 |  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 | 93 |
| 8 |  Fun Summertime Projects! Make a Solar Stove Burner! Fast On-Demand Cooking. (vid comp) Parabolic DIY | | 1.7K | Estados Unidos | 92 |
| 17 |  Sand Battery Air Heater with Beeswax Candles! DIY Sand-based Heater! beeswax hotter/brighter/cleaner | | 1.6K | Estados Unidos | 91 |
| 4 |  DIY Forced Draft Rocket Stove! w/4020 fan (12v solar/batt) DIY Bio stove! precise temp control | | 1.5K | Estados Unidos | 93 |
| 3 |  Make a Sand Battery Air Heater at home! no-electricity needed! strong air heater! - w/fan! 300F/150C | | 1.3K | Estados Unidos | 93 |
| 10 |  DIY Space Cooler! "Peltier" AC Air Cooler - 100w/200w 12v (12715 peltier module) - no ice needed! | | 1.2K | Estados Unidos | 92 |
| 7 |  DIY Thermo-Electric Generator! Generate Electricity w/candles! run lights, radios, fans! Peltier Pwr | | 911 | Estados Unidos | 92 |
| 6 |  DIY Terracotta Air Heater! - New Design! 2 Pots w/copper foil lining, sand & beeswax candles! + fan | | 707 | Estados Unidos | 92 |
| 12 |  Homemade Air Heater. AC/DC Powered. 150F/65C. Ceramic/Alum. "Ripple' Air Heater (solar/batt. option) | | 462 | Estados Unidos | 91 |
| 5 |  DIY Candle Powered Desk Fan! (using a strip of copper and a brick) tealight powered 3-speed easy DIY | | 317 | Estados Unidos | 92 |
| 16 |  DIY 12v Space Heater (w/2 heating elements!) 150F(65C) dual fans, AC/DC power solar/batt/car options | | 307 | Estados Unidos | 91 |