Combi Furnaces

Combi furnaces take care of both hot water and space heating needs for greater efficiency.

GF150

The GF150 is a merging of our TRX combi boiler with a high efficiency air…

GF200 (Discontinued)

The innovative GF200 is a unique Combi Furnace that offers a new dimension of comfort,…

High-Output Combi System

The NTI High-Output Combi System delivers all the advantages of a boiler and tank combination,…