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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.
Standard Features
Product Note
Reznor UDAP is the legacy model of the Reznor UDX
Across multiple Reznor UDX models from 45,000 to 150,000 BTU, owners report fast heat-up times such as raising a 950 sq ft garage from 35°F to 70°F in 15–20 minutes, heating a 60x40x16 shop from 58°F to 70°F in 35 minutes, and maintaining 60°F in -11°F weather in a 35,000 cubic foot space, with one unit running flawlessly for three seasons. Installation is frequently described as straightforward—including a four-hour install with a duct lift and simple replacement of older units lasting nearly 20 years—though one buyer noted an incorrect conversion kit and another cited poor delivery placement despite good packaging.
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