Direct Fired systems are very efficient and safe for space heating applications. Very well suited for the following:
When you need a heating solution for large volumes of ventilation air, then direct fired units may be the right solution offering:
Not recomended for schools or high occupancy areas due to the normal aldehyde smells that result from natural gas combustion.
Indoor-Outdoor Direct Fired Gas Heating Makeup Air System
Indoor/Outdoor Direct Fired Gas Makeup Air System - High Discharge Temperature
High Capacity, Indoor/Ooutdoor Horizontal Direct-Fired Makeup Air System, Dual Blower Model
High Capacity, Indoor/Ooutdoor Vertical Direct-Fired Makeup Air System, Dual Blower Model
Indoor/Outdoor, Direct Fired Gas Heating/Makeup Air System for Commercial / Industrial Use