Tx Combi (Discontinued)

The Tx Combi is the perfect choice for high efficiency water tube combination boiler applications. This boiler provides both space heating and domestic hot water in one single appliance, providing all the heat you need in one compact and affordable package. The boiler is equipped with a primary loop pump and pre-assembled low loss header to make installation easy and super fast. Eligible for energy efficiency rebates.

Main Features

Low loss header manifold included

Easy to clean stainless steel heat exchanger

Integrated primary loop pump

Universal vent connections with embedded test port

DHW flow sensor with no moving parts

Quick connect components

Vents in PVC, CPVC or Poly Propylene


Input power, DHW18.9 - 151 MBH24.9 - 199 MBH
Input power, Heating18.9 - 80 MBH24.9 - 120 MBH
Heating capacity74 MBH111 MBH
Net AHRI Rating64 MBH96 MBH
DHW Flow Rate at 77°F T Rise3.5 GPM4.6 GPM
Installation typeIndoor Wall Hung (rack available for floor standing installation)Indoor Wall Hung (rack available for floor standing installation)
Weight98 lb120 lb
Gas connection1⁄2 in NPT female1⁄2 in NPT female
Water connections1 in female (sweat joint)1 in female (sweat joint)
DHW connections3⁄4 in NPT male3⁄4 in NPT male
Air Inlet2 in (max 100 ft), 3 in (max 150 ft)3 in (max 100 ft)
Flue2 in (max 100 ft), 3 in (max 150 ft)3 in (max 100 ft)

Manuals & Guides

Tx Series Combi Submittal


Tx Series Installation and Operation Manual


Tx, FTV and Vmax Series Argus Display Operating Guide


Tx Lx and Lx-WH Series Heat Exchanger Cleaning Instructions



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Install your boiler anywhere in the room using our floor stands.

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