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"Provides several great upgrades for ores, provided they are on fire when they pass through."
The Heat Condenser is a Unique-tier raised upgrader that was released in the Second Sacrifice Update. According to the in-game description, the upgrader is supposed to upgrade ores that are on fire and can be used several times.
This upgrader has a unique design with two conveyors in one. The first conveyor is a bit raised but is on a lower elevation than the Conveyor Ramp. When the ore hits the beams, the ore is directed to the left right before it falls onto the second conveyor which is on ground level. Due to the pipes on the conveyor, large ores cannot pass through.