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Reznor model UDX gas-fired unit heaters are great for space heating applications. These units are power vented to eliminate heat losses up the flue pipe. Each heater features a two-tone black and white powder coated, scratch-resistant paint scheme and has clean rounded corners and edges with no visible screws or fasteners. For air circulation, the UDX series utilize an axial propellor fan.
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Product Note
Reznor UDAP is the legacy model of the Reznor UDX
Across multiple BTU sizes from 45,000 to 150,000, owners report fast heat-up times and strong performance, including raising a 60x40x16 shop from 58°F to 70°F in 35 minutes, heating 950 square feet from 35°F to 70°F in 15–20 minutes, and maintaining 60°F in -11°F conditions in a 35,000 cubic foot shop. Installations are frequently described as straightforward—sometimes completed in about four hours or by reusing existing mounts—with quieter operation than older units, though one customer received an incorrect conversion kit that was promptly replaced and another cited poor delivery placement.
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