Our home fragrance collection includes classic reed diffusers with scents such as sandalwood, lemon and cherry blossom, as well as electric diffusers that can be set with timers to release scent as a light mist. We like that it has a hand-crank recharging option, red flashing lights in case of emergencies, and fold-up legs, as well as a handle on top. Make as many collector plates as you want and place them around the south-facing area to generate heat.

With the temperature plummeting, you must be thinking about ways to not only keep your house warm but also save a few bucks on heating bills. Too many products come out that are still using the old MicroUSB charging standard, so this is a very welcome feature. It has a weatherproof rating of IPX4, and its rechargeable battery has an impressive capacity rating of 6,400 mAh.Flaws but not dealbreakers: As with every other model we tested, we’d prefer that the UST 30-Day Duro were better protected against the elements; it has a weatherproof rating of IPX4, which means it’s protected against splashes of water but not dust. Installing the hot air collector on a vertical surface is recommended to get the best angle between the panel and the sun. The fan takes the cold air from your room and passes it through the coil to heat it and radiate it around.

The first and second numbers of an IP rating denote, respectively, how protected the product is against dust (on a scale of 0 to 6) and water (on a scale of 0 to 8) exposure.It’s powered by six D batteries (not included), allowing the lamp to stay lit on its highest brightness setting for at least 60 days before the batteries must be replaced—which is something we verified in our testing.