I was driving past a house under construction and saw this device in its driveway. It was operating, making a continual noise. Does anyone know what this machine is and what it does?
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2It passes butter. – Chloe Nov 14 '19 at 21:21
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It looks like a fan-forced portable furnace, to blow warmed air into the cold building that is being built.
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Would this be called a mobile indirect fired air heater? The purpose is to have all combustion gasses exhausted out side while a heat exchanger warms the air delivered to the inside through the flex duct. I would never have known they existed with out your answer. – Kris Nov 14 '19 at 13:34
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@Kris It's definitely a mobile air heater, can't say about the rest of your description. – Mast Nov 14 '19 at 17:44
