When equipping a warehouse or large workshop, a reliable gas-fired heater can keep critical areas warm while controlling operating costs. This article highlights five top-rated commercial gas heaters suited for warehouses, garages, and industrial spaces. Each model is evaluated on heating capacity, efficiency, mounting options, and versatility for natural gas or propane use.
| Product | Fuel Type | BTU | Mounting | Key Benefit |
|---|---|---|---|---|
| Reznor UDXC-150 (Nat Gas) | Natural Gas | 150,000 | Ceiling or Wall (brackets sold separately) | Solid mid-range option with efficient output |
| Reznor UDXC-175 (Nat Gas) | Natural Gas | 175,000 | Ceiling or Wall (brackets sold separately) | Higher capacity for larger spaces |
| Reznor UDXC-400 (Nat Gas) | Natural Gas | 400,000 | Ceiling or Wall (brackets sold separately) | High-demand warehouses or workshops |
| Reznor UDXC-150 (Propane) | Propane | 150,000 | Ceiling or Wall (brackets sold separately) | Flexible fuel option with strong efficiency |
| Reznor UDXC-250 (Propane) | Propane | 250,000 | Ceiling or Wall (brackets sold separately) | Higher propane heating capacity |
The following sections profile each product’s capabilities, helping facility managers compare options for space heating, energy efficiency, and installation flexibility. All models discussed are part of the UDXC line and designed for industrial or commercial environments.
Reznor UDXC-150 Natural Gas Ceiling Mount Heater

The UDXC-150 natural gas unit offers a practical balance of heating output and efficiency for medium-sized warehouses or workshops. It delivers 150,000 BTU with an 83% thermal efficiency rating, suitable for spaces requiring steady, reliable warmth. The unit is designed for ceiling mounting or wall installation using compatible brackets (sold separately), enabling flexible placement in utility corridors or bays. Its compact footprint helps maximize floor space while delivering consistent forced-air heating.
Reznor UDXC-175 Natural Gas Ceiling Mount Heater

The UDXC-175 increases heating capacity to 175,000 BTU while maintaining an 83% thermal efficiency rating. This model is well-suited for larger warehouses or production floors that require robust heat output without escalating energy use. Like the 150,000 BTU version, it’s a natural gas unit designed for ceiling or wall mounting with appropriate suspension hardware (sold separately). The design prioritizes quiet operation and durable construction for demanding environments.
Reznor UDXC-400 Natural Gas Ceiling Mount Heater

The UDXC-400 is designed for high-demand spaces needing substantial heat, delivering 400,000 BTU. This unit is built to maintain comfortable temperatures in large warehouses, factories, and workshops, with an 83% efficiency rating. Ceiling or wall mounting options remain flexible with mounting hardware sold separately. The high-output design supports rapid temperature rise and uniform distribution across expansive areas, making it a common choice for industrial facilities with stringent climate control requirements.
Reznor UDXC-150 Propane Ceiling Mount Heater

This propane variant provides flexibility for facilities with propane infrastructure or where natural gas is unavailable. The UDXC-150 propane model offers 150,000 BTU and the same 83% thermal efficiency rating, with two heat output levels to adapt to mild or colder days. It uses ceiling or wall mounting configurations depending on bracket choices, allowing installation in corner zones or along maintenance aisles to optimize airflow across large spaces.
Reznor UDXC-250 Propane Ceiling Mount Heater

The 250,000 BTU propane model delivers a higher heat output for larger footprints within a warehouse or shop setting. It maintains the same efficient design and ceiling/wall mounting versatility, with the confidence of a robust propane-powered solution. This unit is suitable for facilities needing rapid temperature escalation or maintaining heat across extended production lines, while keeping energy usage within economical limits for propane systems.
Buying Guide
Key considerations when choosing a commercial gas heater for warehouse use:
- Space size and layout: Larger spaces benefit from higher BTU units (e.g., 400,000 BTU) or heaters clustered in zones. Consider ceiling height and airflow patterns to avoid cold spots.
- Fuel availability: Natural gas offers cost efficiency in many markets, while propane is ideal where natural gas lines are unavailable. Verify local supply options and continuity.
- Ventilation and vent type: Most units support vertical or horizontal venting. Check building codes for venting requirements and indoor air quality considerations.
- Installation flexibility: Ceiling-mount vs. wall-mount options impact space usage and maintenance access. Ensure brackets or mounting kits are compatible with chosen model.
- Efficiency and operating costs: An 83% efficiency rating indicates solid energy use; higher BTU does not always mean lower operating costs if space doesn’t require it.
- Maintenance access and serviceability: Look for units with readily accessible service panels and vendor support for parts and service.
- Noise and durability: Forced-air blowers should minimize disruption in work environments. Durable housings support long service life in industrial settings.
These factors help determine whether a mid-range capacity unit (150k–175k BTU) or a high-output model (250k–400k BTU) best fits a warehouse’s heating profile. When evaluating propane versus natural gas variants, consider ongoing fuel costs, delivery logistics, and installation constraints to optimize total cost of ownership.