The all-new modulating Delta gas-fired, sealed combustion heater is now available from Triangle Tube. It provides efficient, comfortable hydronic heat, while simultaneously providing domestic hot water. Available in two sizes: the PG-150 modulates from 90,000 to 150,000 Btu/hr., and the PG-199 modulates from 135,000 to 199,000 Btu/hr.

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