{"product_id":"reznor-udx-125000-btu-natural-gas-unit-heater","title":"Reznor UDX 125,000 BTU Natural Gas Unit Heater - NUDX125","description":"\u003ch2\u003eReznor UDX 125,000 BTU Natural Gas Unit Heater - NUDX125\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=\"54s1hy\" data-start=\"27\" data-end=\"338\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"70\"\u003eEfficient small‑space propane heating\u003c\/strong\u003e\u003cbr data-start=\"70\" data-end=\"73\"\u003eThe \u003cstrong data-start=\"79\" data-end=\"144\"\u003eReznor UDX 45,000 BTU Propane Unit Heater (NUDX45, N1036536R)\u003c\/strong\u003e delivers \u003cstrong data-start=\"154\" data-end=\"184\" data-is-only-node=\"\"\u003eefficient 45 k BTU heating\u003c\/strong\u003e for \u003cstrong data-start=\"189\" data-end=\"256\"\u003eworkshops, garages, utility rooms, or smaller commercial spaces\u003c\/strong\u003e, offering strong warmth without oversizing. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10mqow0\" data-start=\"340\" data-end=\"566\"\u003e\n\u003cstrong data-start=\"342\" data-end=\"376\"\u003eSolid efficiency for daily use\u003c\/strong\u003e\u003cbr data-start=\"376\" data-end=\"379\"\u003eWith about \u003cstrong data-start=\"392\" data-end=\"424\"\u003e83 % AFUE thermal efficiency\u003c\/strong\u003e, it strikes a \u003cstrong data-start=\"439\" data-end=\"487\" data-is-only-node=\"\"\u003egood balance of fuel economy and heat output\u003c\/strong\u003e, helping manage propane costs over time. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"yv62f\" data-start=\"568\" data-end=\"814\"\u003e\n\u003cstrong data-start=\"570\" data-end=\"604\"\u003eDurable commercial‑grade build\u003c\/strong\u003e\u003cbr data-start=\"604\" data-end=\"607\"\u003eFeatures a \u003cstrong data-start=\"620\" data-end=\"683\"\u003eTCORE2 titanium‑stabilized aluminized steel heat exchanger\u003c\/strong\u003e for \u003cstrong data-start=\"688\" data-end=\"728\" data-is-only-node=\"\"\u003elong service life under frequent use\u003c\/strong\u003e, ideal for commercial or workshop environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"y3gnqa\" data-start=\"816\" data-end=\"1039\"\u003e\n\u003cstrong data-start=\"818\" data-end=\"845\"\u003eQuiet, reliable airflow\u003c\/strong\u003e\u003cbr data-start=\"845\" data-end=\"848\"\u003eThe \u003cstrong data-start=\"854\" data-end=\"899\"\u003eaxial propeller fan and power‑vent design\u003c\/strong\u003e promote effective circulation with \u003cstrong data-start=\"935\" data-end=\"958\" data-is-only-node=\"\"\u003elow noise operation\u003c\/strong\u003e, making it comfortable in busy workspaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"wf3p1n\" data-start=\"1041\" data-end=\"1260\"\u003e\n\u003cstrong data-start=\"1043\" data-end=\"1070\"\u003eService‑friendly design\u003c\/strong\u003e\u003cbr data-start=\"1070\" data-end=\"1073\"\u003ePower‑venting and external gas connection improve installation flexibility, while diagnostic LEDs aid in \u003cstrong data-start=\"1180\" data-end=\"1221\"\u003equick troubleshooting and maintenance\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"qdnsck\" data-start=\"1262\" data-end=\"1460\"\u003e\n\u003cstrong data-start=\"1264\" data-end=\"1297\"\u003eFlexible installation options\u003c\/strong\u003e\u003cbr data-start=\"1297\" data-end=\"1300\"\u003eCan be \u003cstrong data-start=\"1309\" data-end=\"1341\"\u003eceiling‑mounted or suspended\u003c\/strong\u003e to suit layout needs, and includes options for different venting configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"100\" data-end=\"374\"\u003e\u003cstrong data-start=\"100\" data-end=\"160\"\u003eQ1: What space size is the Reznor UDX45 heater best for?\u003c\/strong\u003e\u003cbr data-start=\"160\" data-end=\"163\"\u003eA: With \u003cstrong data-start=\"171\" data-end=\"220\"\u003e45,000 BTU input and up to ~37,300 BTU output\u003c\/strong\u003e, it’s suited for \u003cstrong data-start=\"238\" data-end=\"299\"\u003esmall to medium garages, workshops, and commercial spaces\u003c\/strong\u003e needing efficient propane heating. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"376\" data-end=\"570\"\u003e\u003cstrong data-start=\"376\" data-end=\"419\"\u003eQ2: What fuel type does this model use?\u003c\/strong\u003e\u003cbr data-start=\"419\" data-end=\"422\"\u003eA: It operates on \u003cstrong data-start=\"440\" data-end=\"463\"\u003eliquid propane (LP)\u003c\/strong\u003e using the factory‑specified propane configuration (SKU N1036536R). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"572\" data-end=\"751\"\u003e\u003cstrong data-start=\"572\" data-end=\"607\"\u003eQ3: How efficient is the UDX45?\u003c\/strong\u003e\u003cbr data-start=\"607\" data-end=\"610\"\u003eA: It delivers around \u003cstrong data-start=\"632\" data-end=\"660\"\u003e~82–83 % AFUE efficiency\u003c\/strong\u003e, maximizing heat output with reduced energy waste. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"753\" data-end=\"985\"\u003e\u003cstrong data-start=\"753\" data-end=\"811\"\u003eQ4: What durability features does this heater include?\u003c\/strong\u003e\u003cbr data-start=\"811\" data-end=\"814\"\u003eA: It features a \u003cstrong data-start=\"831\" data-end=\"894\"\u003eTCORE2 titanium‑stabilized aluminized steel heat exchanger\u003c\/strong\u003e for long‑term durability and corrosion resistance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"987\" data-end=\"1226\"\u003e\u003cstrong data-start=\"987\" data-end=\"1028\"\u003eQ5: What are airflow and noise specs?\u003c\/strong\u003e\u003cbr data-start=\"1028\" data-end=\"1031\"\u003eA: The unit circulates air with an \u003cstrong data-start=\"1066\" data-end=\"1100\"\u003eaxial propeller fan (~629 CFM)\u003c\/strong\u003e and runs at a \u003cstrong data-start=\"1115\" data-end=\"1144\"\u003elow noise level (~40 dBA)\u003c\/strong\u003e — comfortable for workspace environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1228\" data-end=\"1500\"\u003e\u003cstrong data-start=\"1228\" data-end=\"1273\"\u003eQ6: Is installation and maintenance easy?\u003c\/strong\u003e\u003cbr data-start=\"1273\" data-end=\"1276\"\u003eA: Yes — the heater includes \u003cstrong data-start=\"1305\" data-end=\"1411\"\u003estatus LED, 7‑segment diagnostic display, multi‑try direct spark ignition, and external gas connection\u003c\/strong\u003e for straightforward service and troubleshooting. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1502\" data-end=\"1717\"\u003e\u003cstrong data-start=\"1502\" data-end=\"1559\"\u003eQ7: What are the electrical and venting requirements?\u003c\/strong\u003e\u003cbr data-start=\"1559\" data-end=\"1562\"\u003eA: It runs on \u003cstrong data-start=\"1576\" data-end=\"1613\"\u003e115 V single‑phase power (~2.4 A)\u003c\/strong\u003e and uses a \u003cstrong data-start=\"1625\" data-end=\"1642\"\u003e4″ power vent\u003c\/strong\u003e for safe venting of exhaust gases.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"18bc7od\" data-start=\"89\" data-end=\"239\"\u003e\n\u003cstrong data-start=\"91\" data-end=\"114\"\u003eClean air pathways:\u003c\/strong\u003e Regularly remove dust from the fan, louvers, and intake screen to maintain strong airflow and efficient heat distribution.\u003c\/li\u003e\n\u003cli data-section-id=\"10lg1b7\" data-start=\"240\" data-end=\"374\"\u003e\n\u003cstrong data-start=\"242\" data-end=\"269\"\u003eInspect heat exchanger:\u003c\/strong\u003e Annually check for cracks, corrosion, or soot buildup to ensure safe combustion and long service life.\u003c\/li\u003e\n\u003cli data-section-id=\"6dcssa\" data-start=\"375\" data-end=\"520\"\u003e\n\u003cstrong data-start=\"377\" data-end=\"412\"\u003eTest ignition \u0026amp; propane supply:\u003c\/strong\u003e Verify the direct spark ignition and propane pressure\/connections to prevent misfires and uneven heating.\u003c\/li\u003e\n\u003cli data-section-id=\"18h6axz\" data-start=\"521\" data-end=\"639\"\u003e\n\u003cstrong data-start=\"523\" data-end=\"546\"\u003eKeep venting clear:\u003c\/strong\u003e Make sure the power vent and flue are unobstructed to avoid exhaust buildup and heat loss.\u003c\/li\u003e\n\u003cli data-section-id=\"1ptca2l\" data-start=\"640\" data-end=\"781\"\u003e\n\u003cstrong data-start=\"642\" data-end=\"674\"\u003eCheck electrical components:\u003c\/strong\u003e Inspect wiring, controls, and diagnostic LEDs; tighten loose connections to prevent faults and downtime.\u003c\/li\u003e\n\u003cli data-section-id=\"1lxz13d\" data-start=\"782\" data-end=\"895\"\u003e\n\u003cstrong data-start=\"784\" data-end=\"822\"\u003eVerify conversion kit (N1036536R):\u003c\/strong\u003e Ensure proper installation and calibration for safe propane operation.\u003c\/li\u003e\n\u003cli data-section-id=\"16cv1es\" data-start=\"896\" data-end=\"1026\"\u003e\n\u003cstrong data-start=\"898\" data-end=\"930\"\u003eAnnual professional service:\u003c\/strong\u003e Scheduled servicing helps maintain efficiency, reliable performance, and warranty compliance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Reznor","offers":[{"title":"Default Title","offer_id":43530466885706,"sku":"NUDX125","price":1536.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/2387\/2074\/files\/udx-1_10_9c777823-8ba4-4bf8-a1f2-f5ebc698e5a8.jpg?v=1776777806","url":"https:\/\/wen0d6-q0.myshopify.com\/es\/products\/reznor-udx-125000-btu-natural-gas-unit-heater","provider":"Power Gear for Every Journey","version":"1.0","type":"link"}