| ★ |  DIY Space Cooler! "Peltier" AC Air Cooler - 100w/200w 12v (12715 peltier module) - no ice needed! | | 1.2K | Estados Unidos | |
| 15 |  DIY "PEX COIL" Solar Water Heater! - High temps! - No crimping! - Sunsafe! - PEX Made Easy! | | 54.9K | Estados Unidos | 90 |
| 16 |  DIY "TWO STAGE" Indirect Evap Air Cooler! No added Humidity! brand new! 2 fans/2 pumps/2 radiators! | | 13.4K | Estados Unidos | 90 |
| 8 |  2-Stage Air Cooling System w/radiator! (extended version) Make an AC Air Cooler! at home DIY | | 11.5K | Estados Unidos | 91 |
| 3 |  Deluxe DIY Air Cooler! w/Built-in Radiator & Air Filter! AC/DC 12V! Low Temps (360 nozzle) solar op. | | 10.7K | Estados Unidos | 93 |
| 4 |  DIY Two-Stage "5 Gallon Bucket Air Cooler!" w/radiator and variable speed fan! strongest cooling! AC | | 10.7K | Estados Unidos | 93 |
| 2 |  DIY 12V Air Cooler! very cold air! 20w (AC or DC) - Radiator w/Stand + Hi-Speed.Fan! modular design! | | 10.1K | Estados Unidos | 94 |
| 13 |  Electronic Cooling | Peltier module 🤯🔥 | | 7.6K | Sri Lanka | 90 |
| 18 |  12v 400 Watt DIY Space Heater! (UPGRADE) - quieter/faster/stronger! side-by-side w/500w Store Model | | 5.0K | Estados Unidos | 90 |
| 10 |  DIY Air Cooler! "Table Fan" Air Cooler (conv.) *w/radiator 3-spd - very quiet drops temp 20 degrees! | | 4.0K | Estados Unidos | 91 |
| 5 |  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 | 92 |
| 19 |  DIY "Suitcase Style" Solar Power Generator! AC/DC/USB smart charging (P2 Ext. Version) Portable Pwr | | 938 | Estados Unidos | 90 |
| 7 |  DIY Thermo-Electric Generator! Generate Electricity w/candles! run lights, radios, fans! Peltier Pwr | | 911 | Estados Unidos | 91 |
| 1 |  12V Peltier "Personal Space" Air Cooler! DIY Peltier Air Cooler! (6.5a) can be solar/battery powered | | 799 | Estados Unidos | 96 |
| 11 |  Thermo-Electric Generators! Make Electricity W/Fire! Peltier Powered! w/lots of experiments! DIY | | 738 | Estados Unidos | 91 |
| 6 |  DIY "personal space" novelty air heater! (burner+copper+fan) fan is heat powered! easy space heating | | 557 | Estados Unidos | 92 |
| 17 |  Homemade Air Heater. AC/DC Powered. 150F/65C. Ceramic/Alum. "Ripple' Air Heater (solar/batt. option) | | 462 | Estados Unidos | 90 |
| 9 |  12v High-Speed Desk Fan with DIY stand! AC/DC Pwrd. (solar/battery) - very high airflow! | | 398 | Estados Unidos | 91 |
| 20 |  DIY Candle Powered Desk Fan! (using a strip of copper and a brick) tealight powered 3-speed easy DIY | | 317 | Estados Unidos | 89 |
| 12 |  DIY 12v Space Heater (w/2 heating elements!) 150F(65C) dual fans, AC/DC power solar/batt/car options | | 307 | Estados Unidos | 90 |
| 14 |  DIY "Indirect" Evap AIr Cooler! Produces Cold/Dry Air (No Humidity!) - AC/DC - can be solar powered! | | 1 | Estados Unidos | 90 |