{"product_id":"reznor-udx-300000-btu-natural-gas-unit-heater","title":"Reznor UDX 300,000 BTU Natural Gas Unit Heater - NUDX300","description":"\u003ch2\u003eReznor UDX 300,000 BTU Natural Gas Unit Heater - NUDX300\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=\"1208fs0\" data-start=\"27\" data-end=\"300\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"66\"\u003eBuilt for serious heating demands\u003c\/strong\u003e\u003cbr data-start=\"66\" data-end=\"69\"\u003eWith \u003cstrong data-start=\"76\" data-end=\"97\"\u003e300,000 BTU input\u003c\/strong\u003e, this unit is engineered for \u003cstrong data-start=\"127\" data-end=\"180\" data-is-only-node=\"\"\u003elarge commercial, industrial, or warehouse spaces\u003c\/strong\u003e, delivering powerful and consistent heat output where smaller units fall short. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18scvhc\" data-start=\"302\" data-end=\"560\"\u003e\n\u003cstrong data-start=\"304\" data-end=\"339\"\u003eStrong efficiency for its class\u003c\/strong\u003e\u003cbr data-start=\"339\" data-end=\"342\"\u003eOperating at around \u003cstrong data-start=\"364\" data-end=\"376\"\u003e83% AFUE\u003c\/strong\u003e, it strikes a solid balance between \u003cstrong data-start=\"413\" data-end=\"462\" data-is-only-node=\"\"\u003efuel efficiency and high-capacity performance\u003c\/strong\u003e, making it a practical choice for long operational hours. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"wszmc5\" data-start=\"562\" data-end=\"785\"\u003e\n\u003cstrong data-start=\"564\" data-end=\"594\"\u003eDurability you can rely on\u003c\/strong\u003e\u003cbr data-start=\"594\" data-end=\"597\"\u003eThe \u003cstrong data-start=\"603\" data-end=\"646\"\u003eTCORE2® aluminized steel heat exchanger\u003c\/strong\u003e is designed for longevity under demanding conditions—ideal for environments with heavy-duty usage. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ia9m4v\" data-start=\"787\" data-end=\"1002\"\u003e\n\u003cstrong data-start=\"789\" data-end=\"827\"\u003eSmart diagnostics \u0026amp; easy servicing\u003c\/strong\u003e\u003cbr data-start=\"827\" data-end=\"830\"\u003eFeatures like a \u003cstrong data-start=\"848\" data-end=\"895\"\u003e7-segment display board and LED diagnostics\u003c\/strong\u003e simplify troubleshooting, reducing downtime and maintenance costs. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"720pl0\" data-start=\"1004\" data-end=\"1229\"\u003e\n\u003cstrong data-start=\"1006\" data-end=\"1040\"\u003eQuiet, low-vibration operation\u003c\/strong\u003e\u003cbr data-start=\"1040\" data-end=\"1043\"\u003eDespite its size, the unit uses \u003cstrong data-start=\"1077\" data-end=\"1123\"\u003evibration-isolated motors and an axial fan\u003c\/strong\u003e to maintain relatively low noise levels—important for workspaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1iz7bje\" data-start=\"1231\" data-end=\"1433\"\u003e\n\u003cstrong data-start=\"1233\" data-end=\"1264\"\u003eEfficient heat distribution\u003c\/strong\u003e\u003cbr data-start=\"1264\" data-end=\"1267\"\u003eWith airflow reaching \u003cstrong data-start=\"1291\" data-end=\"1333\"\u003e~3,800+ CFM and up to 90+ ft air throw\u003c\/strong\u003e, it ensures wide and even heat coverage across large areas. \u003cspan class=\"\" data-state=\"delayed-open\" aria-describedby=\"radix-_r_21_\"\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=\"94\" data-end=\"347\"\u003e\u003cstrong data-start=\"94\" data-end=\"145\"\u003eQ1: What size space can the Reznor UDX300 heat?\u003c\/strong\u003e\u003cbr data-start=\"145\" data-end=\"148\"\u003eA: With \u003cstrong data-start=\"156\" data-end=\"201\"\u003e300,000 BTU input and ~249,000 BTU output\u003c\/strong\u003e, it’s ideal for large commercial, industrial, or warehouse spaces requiring powerful, consistent heating. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"349\" data-end=\"546\"\u003e\u003cstrong data-start=\"349\" data-end=\"399\"\u003eQ2: How efficient is the Reznor UDX300 heater?\u003c\/strong\u003e\u003cbr data-start=\"399\" data-end=\"402\"\u003eA: It offers up to \u003cstrong data-start=\"421\" data-end=\"444\"\u003e83% AFUE efficiency\u003c\/strong\u003e, delivering strong heat output while minimizing energy waste. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"548\" data-end=\"739\"\u003e\u003cstrong data-start=\"548\" data-end=\"600\"\u003eQ3: What type of fuel does this unit heater use?\u003c\/strong\u003e\u003cbr data-start=\"600\" data-end=\"603\"\u003eA: The NUDX300 operates on \u003cstrong data-start=\"630\" data-end=\"645\"\u003enatural gas\u003c\/strong\u003e and can be converted to propane with an optional kit. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"741\" data-end=\"962\"\u003e\u003cstrong data-start=\"741\" data-end=\"798\"\u003eQ4: Is the Reznor UDX300 suitable for commercial use?\u003c\/strong\u003e\u003cbr data-start=\"798\" data-end=\"801\"\u003eA: Yes, it’s designed for \u003cstrong data-start=\"827\" data-end=\"869\"\u003ecommercial and industrial applications\u003c\/strong\u003e, including workshops, garages, and large facilities. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"964\" data-end=\"1202\"\u003e\u003cstrong data-start=\"964\" data-end=\"1015\"\u003eQ5: What makes the UDX300 durable and reliable?\u003c\/strong\u003e\u003cbr data-start=\"1015\" data-end=\"1018\"\u003eA: It features a \u003cstrong data-start=\"1035\" data-end=\"1098\"\u003eTCORE2 titanium-stabilized aluminized steel heat exchanger\u003c\/strong\u003e, ensuring long-lasting performance and resistance to corrosion. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1204\" data-end=\"1404\"\u003e\u003cstrong data-start=\"1204\" data-end=\"1236\"\u003eQ6: Does it operate quietly?\u003c\/strong\u003e\u003cbr data-start=\"1236\" data-end=\"1239\"\u003eA: Yes, the unit includes a \u003cstrong data-start=\"1267\" data-end=\"1315\"\u003elow-noise axial fan with vibration isolation\u003c\/strong\u003e, making it quieter than many comparable heaters. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1406\" data-end=\"1658\"\u003e\u003cstrong data-start=\"1406\" data-end=\"1451\"\u003eQ7: Is installation and maintenance easy?\u003c\/strong\u003e\u003cbr data-start=\"1451\" data-end=\"1454\"\u003eA: The heater includes \u003cstrong data-start=\"1477\" data-end=\"1560\"\u003eexternal gas connections, diagnostic LED indicators, and a simple control board\u003c\/strong\u003e, making installation and troubleshooting straightforward. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1660\" data-end=\"1882\"\u003e\u003cstrong data-start=\"1660\" data-end=\"1715\"\u003eQ8: What are the key airflow and performance specs?\u003c\/strong\u003e\u003cbr data-start=\"1715\" data-end=\"1718\"\u003eA: It delivers up to \u003cstrong data-start=\"1739\" data-end=\"1789\"\u003e3843 CFM airflow with an air throw of ~94 feet\u003c\/strong\u003e, ensuring even heat distribution across large areas.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"10dzut7\" data-start=\"81\" data-end=\"264\"\u003e\n\u003cstrong data-start=\"83\" data-end=\"116\"\u003eClean air pathways regularly:\u003c\/strong\u003e Keep fan blades, louvers, and intake areas dust-free to maintain proper airflow and efficiency (≈83% AFUE). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17ut05t\" data-start=\"265\" data-end=\"443\"\u003e\n\u003cstrong data-start=\"267\" data-end=\"303\"\u003eInspect heat exchanger annually:\u003c\/strong\u003e Check for cracks or corrosion to ensure safe combustion and long lifespan of the TCORE2® exchanger. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1sgdijp\" data-start=\"444\" data-end=\"637\"\u003e\n\u003cstrong data-start=\"446\" data-end=\"487\"\u003eCheck gas pressure \u0026amp; ignition system:\u003c\/strong\u003e Verify proper operation of the direct spark ignition and gas connections to prevent misfires or inefficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"140vlfn\" data-start=\"638\" data-end=\"811\"\u003e\n\u003cstrong data-start=\"640\" data-end=\"667\"\u003eMonitor venting system:\u003c\/strong\u003e Ensure the power vent and flue are clear of obstructions to avoid heat loss and unsafe exhaust buildup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"404z2d\" data-start=\"812\" data-end=\"986\"\u003e\n\u003cstrong data-start=\"814\" data-end=\"849\"\u003eTighten electrical connections:\u003c\/strong\u003e Periodically inspect wiring, control board, and LED diagnostics for faults or loose connections. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"drr80n\" data-start=\"987\" data-end=\"1132\"\u003e\n\u003cstrong data-start=\"989\" data-end=\"1022\"\u003eLubricate and inspect motors:\u003c\/strong\u003e Keep fan and venter motors running smoothly to reduce noise and wear. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zrwnqs\" data-start=\"1133\" data-end=\"1290\"\u003e\n\u003cstrong data-start=\"1135\" data-end=\"1171\"\u003eSchedule professional servicing:\u003c\/strong\u003e Annual HVAC servicing helps maintain warranty compliance and peak performance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Reznor","offers":[{"title":"Default Title","offer_id":43530466328650,"sku":"NUDX300","price":2596.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/2387\/2074\/files\/udx-1_b0d565cc-0e72-4978-8669-098303aee00e.jpg?v=1776777761","url":"https:\/\/wen0d6-q0.myshopify.com\/products\/reznor-udx-300000-btu-natural-gas-unit-heater","provider":"Power Gear for Every Journey","version":"1.0","type":"link"}