https://www.openlearning.com/u..../sauerwynn-slphw7/bl
Patio Heater Electric Infrared Heats Objects and People by Emitting Invisible Warming Waves Patio heater electric infrared emits invisible warming waves to heat objects and people. They are particularly useful in smaller spaces where the furniture is close to each other. They are great for garages and workshops where a convection heating system would not be efficient. Some models feature smart technology which can be controlled remotely. Efficient Patio heaters emit radiant i
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