Reznor Gas and Hydronic Unit heaters

Reznor unit heaters are among the leaders in unit heater design and ease of service. From the direct vent Reznor gas unit heater to the boiler fired hydronic hot water unit heaters.
Both are equally effective in my mind. Though I would prefer the hydronic unit over the gas model, if I was designing the system. In many cases, tubing is not installed at the time the floor was prepped and poured. I have also used these hydronic unit heater as a source of secondary heating in large shop, dock or warehouse locations where opening outside doors are necessary.

The units pictured are smaller residental unit heaters, sized correctly for the application.