{"product_id":"reznor-udx-350000-btu-natural-gas-unit-heater","title":"Reznor UDX 350,000 BTU Natural Gas Unit Heater - NUDX350","description":"\u003ch2\u003eReznor UDX 350,000 BTU Natural Gas Unit Heater - NUDX350\u003c\/h2\u003e\n\u003cp\u003eReznor 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.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e83% AFUE Efficiency\u003c\/li\u003e\n\u003cli\u003eTCORE2 titanium stabilized aluminized steel heat exchanger\u003c\/li\u003e\n\u003cli\u003eMulti-try, direct spark ignition with time lockout\u003c\/li\u003e\n\u003cli\u003eVibration\/noise isolated fan and venter motors designed for low noise operation\u003c\/li\u003e\n\u003cli\u003eExternal status indicating LED that blinks if there is a problem that needs service\u003c\/li\u003e\n\u003cli\u003e7-segment display board that shows fault code for quick and easy troubleshooting\u003c\/li\u003e\n\u003cli\u003eOptional integrated downturn nozzle and integrated vertical louvers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"17hrno4\" data-start=\"27\" data-end=\"333\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"76\"\u003eMaximum heating power for very large spaces\u003c\/strong\u003e\u003cbr data-start=\"76\" data-end=\"79\"\u003eWith \u003cstrong data-start=\"86\" data-end=\"107\"\u003e350,000 BTU input\u003c\/strong\u003e, this model is built for \u003cstrong data-start=\"133\" data-end=\"186\" data-is-only-node=\"\"\u003eheavy-duty commercial and industrial environments\u003c\/strong\u003e—ideal for large warehouses, factories, and aircraft hangars where consistent high-output heat is critical. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kwildw\" data-start=\"335\" data-end=\"565\"\u003e\n\u003cstrong data-start=\"337\" data-end=\"369\"\u003eReliable efficiency at scale\u003c\/strong\u003e\u003cbr data-start=\"369\" data-end=\"372\"\u003eDelivering around \u003cstrong data-start=\"392\" data-end=\"407\"\u003e82–83% AFUE\u003c\/strong\u003e, it offers \u003cstrong data-start=\"419\" data-end=\"467\" data-is-only-node=\"\"\u003estrong energy performance for its size class\u003c\/strong\u003e, helping balance fuel costs with powerful heating output. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zaq16l\" data-start=\"567\" data-end=\"810\"\u003e\n\u003cstrong data-start=\"569\" data-end=\"608\"\u003eEngineered for long-term durability\u003c\/strong\u003e\u003cbr data-start=\"608\" data-end=\"611\"\u003eThe \u003cstrong data-start=\"617\" data-end=\"680\"\u003eTCORE2® titanium-stabilized aluminized steel heat exchanger\u003c\/strong\u003e is designed to withstand demanding, high-use environments—key for industrial reliability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3qg38t\" data-start=\"812\" data-end=\"1026\"\u003e\n\u003cstrong data-start=\"814\" data-end=\"846\"\u003eHigh airflow \u0026amp; wide coverage\u003c\/strong\u003e\u003cbr data-start=\"846\" data-end=\"849\"\u003eWith airflow reaching up to \u003cstrong data-start=\"879\" data-end=\"915\"\u003e~4,400+ CFM and ~90 ft air throw\u003c\/strong\u003e, it ensures \u003cstrong data-start=\"928\" data-end=\"961\" data-is-only-node=\"\"\u003ebroad, even heat distribution\u003c\/strong\u003e across expansive spaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"escex9\" data-start=\"1028\" data-end=\"1245\"\u003e\n\u003cstrong data-start=\"1030\" data-end=\"1062\"\u003eQuiet operation for its size\u003c\/strong\u003e\u003cbr data-start=\"1062\" data-end=\"1065\"\u003eDespite its output, \u003cstrong data-start=\"1087\" data-end=\"1130\"\u003evibration-isolated fan and motor design\u003c\/strong\u003e helps keep noise levels manageable—important for active work environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ofq8xo\" data-start=\"1247\" data-end=\"1461\"\u003e\n\u003cstrong data-start=\"1249\" data-end=\"1293\"\u003eSmart diagnostics \u0026amp; maintenance-friendly\u003c\/strong\u003e\u003cbr data-start=\"1293\" data-end=\"1296\"\u003eFeatures like a \u003cstrong data-start=\"1314\" data-end=\"1355\"\u003e7-segment display and LED diagnostics\u003c\/strong\u003e make troubleshooting faster, reducing downtime and service costs. \u003cspan class=\"\" data-state=\"delayed-open\" aria-describedby=\"radix-_r_2l_\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"104\" data-end=\"366\"\u003e\u003cstrong data-start=\"104\" data-end=\"154\"\u003eQ1: What size area can the Reznor UDX350 heat?\u003c\/strong\u003e\u003cbr data-start=\"154\" data-end=\"157\"\u003eA: With \u003cstrong data-start=\"165\" data-end=\"210\"\u003e350,000 BTU input and ~290,500 BTU output\u003c\/strong\u003e, it’s designed for \u003cstrong data-start=\"230\" data-end=\"293\"\u003elarge warehouses, factories, garages, and commercial spaces\u003c\/strong\u003e requiring high-capacity heating. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"368\" data-end=\"580\"\u003e\u003cstrong data-start=\"368\" data-end=\"411\"\u003eQ2: How efficient is the Reznor UDX350?\u003c\/strong\u003e\u003cbr data-start=\"411\" data-end=\"414\"\u003eA: It delivers up to \u003cstrong data-start=\"435\" data-end=\"461\"\u003e82–83% AFUE efficiency\u003c\/strong\u003e, balancing strong heat output with energy savings for commercial applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"582\" data-end=\"786\"\u003e\u003cstrong data-start=\"582\" data-end=\"631\"\u003eQ3: What fuel type does this unit heater use?\u003c\/strong\u003e\u003cbr data-start=\"631\" data-end=\"634\"\u003eA: The UDX350 runs on \u003cstrong data-start=\"656\" data-end=\"671\"\u003enatural gas\u003c\/strong\u003e and can be \u003cstrong data-start=\"683\" data-end=\"712\"\u003econverted to propane (LP)\u003c\/strong\u003e using an optional conversion kit. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"788\" data-end=\"1012\"\u003e\u003cstrong data-start=\"788\" data-end=\"838\"\u003eQ4: Is the UDX350 suitable for industrial use?\u003c\/strong\u003e\u003cbr data-start=\"838\" data-end=\"841\"\u003eA: Yes, it’s built for \u003cstrong data-start=\"864\" data-end=\"901\"\u003ecommercial and industrial heating\u003c\/strong\u003e, including workshops, distribution centers, and large open facilities. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1014\" data-end=\"1244\"\u003e\u003cstrong data-start=\"1014\" data-end=\"1059\"\u003eQ5: What makes the Reznor UDX350 durable?\u003c\/strong\u003e\u003cbr data-start=\"1059\" data-end=\"1062\"\u003eA: It features a \u003cstrong data-start=\"1079\" data-end=\"1142\"\u003eTCORE2 titanium-stabilized aluminized steel heat exchanger\u003c\/strong\u003e, designed for \u003cstrong data-start=\"1157\" data-end=\"1203\"\u003ecorrosion resistance and long service life\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1246\" data-end=\"1474\"\u003e\u003cstrong data-start=\"1246\" data-end=\"1304\"\u003eQ6: How powerful is the airflow and heat distribution?\u003c\/strong\u003e\u003cbr data-start=\"1304\" data-end=\"1307\"\u003eA: The unit delivers up to \u003cstrong data-start=\"1334\" data-end=\"1390\"\u003e~4,400+ CFM airflow with an air throw around 90 feet\u003c\/strong\u003e, ensuring even heating across large spaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1476\" data-end=\"1689\"\u003e\u003cstrong data-start=\"1476\" data-end=\"1516\"\u003eQ7: Does the UDX350 operate quietly?\u003c\/strong\u003e\u003cbr data-start=\"1516\" data-end=\"1519\"\u003eA: Yes, it includes a \u003cstrong data-start=\"1541\" data-end=\"1598\"\u003elow-noise axial fan and vibration-isolated components\u003c\/strong\u003e, reducing operational noise in large environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1691\" data-end=\"1933\"\u003e\u003cstrong data-start=\"1691\" data-end=\"1736\"\u003eQ8: Is installation and maintenance easy?\u003c\/strong\u003e\u003cbr data-start=\"1736\" data-end=\"1739\"\u003eA: The heater is designed with \u003cstrong data-start=\"1770\" data-end=\"1844\"\u003eexternal gas connections, LED diagnostics, and a digital control board\u003c\/strong\u003e, making installation and troubleshooting simple. \u003cspan class=\"\" data-state=\"delayed-open\" aria-describedby=\"radix-_r_35_\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"wbpy8\" data-start=\"81\" data-end=\"279\"\u003e\n\u003cstrong data-start=\"83\" data-end=\"117\"\u003eKeep airflow components clean:\u003c\/strong\u003e Regularly remove dust from propeller fan, louvers, and intake areas to maintain strong air throw (≈90 ft) and efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1it8eiq\" data-start=\"280\" data-end=\"482\"\u003e\n\u003cstrong data-start=\"282\" data-end=\"316\"\u003eInspect heat exchanger yearly:\u003c\/strong\u003e Check the TCORE2® aluminized steel exchanger for cracks or corrosion to ensure safe, high-output operation (≈83% efficiency). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"b0146l\" data-start=\"483\" data-end=\"664\"\u003e\n\u003cstrong data-start=\"485\" data-end=\"518\"\u003eVerify ignition \u0026amp; gas system:\u003c\/strong\u003e Test direct spark ignition, gas pressure, and connections to prevent startup failures and uneven heating. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"133h3ye\" data-start=\"665\" data-end=\"829\"\u003e\n\u003cstrong data-start=\"667\" data-end=\"695\"\u003eMaintain venting system:\u003c\/strong\u003e Ensure power vent and flue are unobstructed to avoid heat loss and dangerous exhaust buildup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1facndd\" data-start=\"830\" data-end=\"1008\"\u003e\n\u003cstrong data-start=\"832\" data-end=\"867\"\u003eCheck electrical \u0026amp; diagnostics:\u003c\/strong\u003e Monitor LED indicators and control board for faults; tighten wiring connections to prevent downtime. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13fdzqs\" data-start=\"1009\" data-end=\"1186\"\u003e\n\u003cstrong data-start=\"1011\" data-end=\"1047\"\u003eInspect fan \u0026amp; motor performance:\u003c\/strong\u003e Listen for unusual noise and ensure vibration-isolated motors run smoothly for consistent airflow.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Reznor","offers":[{"title":"Default Title","offer_id":43530466394186,"sku":"NUDX350","price":3023.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/2387\/2074\/files\/udx-1_10_984f1fad-8e46-4f16-a616-713f2eda4044.jpg?v=1776777765","url":"https:\/\/wen0d6-q0.myshopify.com\/es\/products\/reznor-udx-350000-btu-natural-gas-unit-heater","provider":"Power Gear for Every Journey","version":"1.0","type":"link"}