Finding a reliable gas heater for warehouses, garages, and industrial spaces requires evaluating BTU output, efficiency, mounting options, and fuel type. This article highlights five top gas-powered options designed for large areas, emphasizing ceiling-mount or wall-mount installations, high heat output, and durable construction. Use this guide to compare models from Reznor and similar brands, and consult installation requirements before purchase.
Summary of chosen products:
- Reznor UDXC-150 — 150,000 BTU, Natural Gas, ceiling mount, quiet forced air
- Reznor UDXC-400 — 400,000 BTU, Natural Gas, ceiling mount, quiet forced air
- Reznor UDXC-45 — 45,000 BTU, Propane, ceiling mount, quiet forced air
- Reznor UDXC-150 (Propane) — 150,000 BTU, Propane, ceiling mount, quiet forced air
- L.B. White Tradesman 170N — 125,000–170,000 BTU, Natural Gas, portable unit, industrial use
Reznor UDXC-150 Natural Gas Ceiling Mount Heater

The Reznor UDXC-150 is a natural gas unit designed for indoor spaces such as garages and warehouses. It delivers 150,000 BTU with an 83% thermal efficiency rating and includes mounting points suitable for ceiling installation. Its quiet forced-air operation helps maintain comfortable temperatures without excessive noise in busy work environments. Ideal for spaces requiring steady heat over large footprints, with installation options that fit high ceilings and open bays.
Reznor UDXC-400 Natural Gas Ceiling Mount Heater

Designed for large spaces, the Reznor UDXC-400 provides 400,000 BTU with the same 83% efficiency as smaller models. This unit is suitable for expansive warehouses or factories that require robust heat delivery. Like other UDXC models, it uses threaded-nut retainers for four suspension points, enabling ceiling-mount installation and flexible mounting configurations to maximize heat coverage while minimizing floor space usage.
Reznor UDXC-45 Propane Ceiling Heater

The UDXC-45 operates on propane and provides a compact 45,000 BTU output appropriate for smaller bays or supplemental heat in larger facilities. It supports ceiling mounting with four suspension points and a low static propeller fan for quiet operation. This model is suitable where natural gas lines aren’t available, offering flexible fuel options for varying facility layouts.
Reznor UDXC-150 Propane Ceiling Heater

The propane version of the 150,000 BTU Reznor unit mirrors the natural gas model’s features, including four suspension point mounting and a ceiling-hanging design. It provides reliable heat for spaces that require robust energy delivery with the convenience of propane as a fuel source. The unit is designed to maintain comfortable temperatures across large warehouse sections while keeping noise levels minimal.
L.B. White Tradesman 170N Portable NG Heater

The L.B. White Tradesman 170N offers 125,000–170,000 BTU/h with natural gas, designed for portable use on construction sites, garages, shops, and warehouses. It features direct-fired technology for high fuel efficiency and a rugged build to withstand demanding environments. The unit includes ignition and diagnostic capabilities for quick troubleshooting, and its portability allows temporary heating where fixed installations are impractical.
Buying Guide: Key Considerations For Gas Warehouse Heaters
Heat output and efficiency: Larger warehouses require higher BTU ratings. Look for models with 150,000 BTU or more for expansive areas and check sustained efficiency ratings around 83% or higher. Beam-width and airflow patterns affect coverage; select units with appropriate fans and ducting options.
Fuel type and flexibility: Natural gas units are common in industrial settings with reliable gas lines. Propane units offer flexibility where gas lines aren’t available but can incur higher operating costs. Consider a model that suits your fuel availability and maintenance capabilities.
Mounting options and space fit: Ceiling-mount units save floor space in busy warehouses, workshops, and garages. Verify mounting hardware availability and compatibility with your building’s structure. For portable needs, portable or semi-permanent units provide adaptability for seasonal or shifting layouts.
Installation and safety: Proper ventilation and venting are critical. Confirm compliance with local codes and required venting configurations (vertical or horizontal). Assess service access for routine maintenance, ignition checks, and filter or fan servicing.
Durability and service: Industrial environments demand robust construction and reliable diagnostics. Look for powder-coated housings, durable heat exchangers, and accessible diagnostic indicators. Check warranty terms and availability of replacement parts or service support in your area.
Noise and comfort: Quiet operation helps reduce job-site fatigue and improves work conditions. Compare dB ratings and fan speeds when evaluating models positioned near work areas or offices.
Brand and compatibility: Reznor remains a prominent option for ceiling-mounted gas heaters. Consider the availability of compatible mounting kits, spare parts, and dealer support to ensure long-term reliability.
Installation cost and lifecycle: Beyond unit price, factor in installation, venting, gas line work, and potential permits. Review total cost of ownership, including maintenance intervals and fuel costs over time, to guide a balanced decision.