This guide highlights top gas-fired heaters ideal for warehouses, shops, and large industrial spaces. Below are five high-capacity options, featuring natural gas and propane models to fit different layouts and venting needs. Each entry includes a quick snapshot, practical use cases, and key features to compare performance and installation considerations. Use the buying guide at the end to weigh power, efficiency, mounting, and fuel access when selecting your solution.
| Product | Fuel | BTU |
|---|---|---|
| Reznor UDXC-150 Natural Gas | Natural Gas | 150,000 |
| Reznor UDXC-400 Natural Gas | Natural Gas | 400,000 |
| Reznor UDXC-150 Propane | Propane | 150,000 |
| Reznor UDXC-250 Propane | Propane | 250,000 |
| L.B. White Tradesman 170N NG | Natural Gas | 125,000-170,000 |
Reznor 150,000 BTU Natural Gas Unit Heater
The Reznor UDXC-150 is a ceiling-mount gas heater designed for garages, shops, warehouses, and factories. It operates on natural gas and delivers 150,000 BTU with an 83% thermal efficiency rating. The unit supports ceiling-mounted installation with four threaded-nut retainers for suspension, enabling flexible placement in open workspace layouts. This model prioritizes quiet forced-air operation and a low static pressure design to maintain airflow with minimal noise.
Reznor 400,000 BTU Natural Gas Unit Heater
Designed for larger spaces, the UDXC-400 natural gas heater delivers 400,000 BTU with 83% efficiency. It’s suitable for industrial settings such as warehouses and factories. Like its smaller sibling, it features four suspension points for ceiling mounting and is optimized for quiet forced-air distribution. High-capacity units are ideal for rapidly elevating temperatures in expansive work areas while maintaining controllable fuel consumption.
Reznor 150,000 BTU LP Gas Unit Heaters
The UDXC-150 propane heater provides robust heat for indoor spaces where propane is preferred or readily available. It maintains 150,000 BTU with 83% thermal efficiency and uses threaded-nut retainers for four suspension points, enabling ceiling-mount or wall installation depending on brackets used. Propane versions are commonly employed where natural gas service is limited or unavailable.
Reznor 250,000 BTU LP Gas Unit Heater
The UDXC-250 propane model delivers 250,000 BTU for high-demand spaces such as large warehouses or workshops. It features the same ceiling-mount readiness with four suspension points and efficient forced-air distribution. Its propane design enables flexible installation in facilities without natural gas access, though proper storage and handling considerations apply for propane systems.
L.B. White Tradesman 170N NG Portable Heater
The L.B. White Tradesman 170N portable natural gas heater offers a broad heat range from 125,000 to 170,000 BTU/hour, making it suitable for construction sites, garages, shops, and warehouses. Direct-fired technology delivers high thermal output with up to 99.97% fuel efficiency in some configurations. Its portable design supports quick relocation, while a durable build helps withstand demanding environments. Built-in diagnostic support aids maintenance and reliability in busy work sites.
Buying Guide
- Fuel type: Natural gas units are convenient where gas service is already installed; propane units offer flexibility where gas lines are unavailable. Consider local fuel costs and availability when deciding between natural gas and propane.
- BTU and space: Larger spaces require higher BTU outputs. Match the unit’s BTU rating to the space size, insulation level, ceiling height, and desired temperature rise to avoid over- or under-heating.
- Mounting options: Ceiling-mount units save floor space and improve air distribution for open layouts. Verify mounting brackets or kits are available for your chosen model.
- Efficiency and venting: Look for units with high thermal efficiency (around 83% is common for many Reznor units). Ensure venting compatibility (vertical/horizontal) and local code compliance for safety and performance.
- Durability and serviceability: Industrial environments demand rugged construction and accessible service diagnostics. Consider corrosion resistance, warranty coverage, and availability of replacement parts.
- Installation considerations: Check clearances from combustibles, electrical supply requirements, and whether professional installation is required by code. For portable models, ensure stable placement and proper ventilation in outdoor or semi-outdoor spaces.
- Maintenance: Regular inspection of burners, ignition systems, and venting reduces downtime. Favor models with straightforward diagnostics and user-friendly maintenance access.
- Safety features: Look for flame safeguard controls, overheat protection, and shutoff mechanisms. Adequate ventilation and carbon monoxide awareness are essential in enclosed spaces.