Noritz TTS Series 6-Unit Tankless Water Heater System with Storage Tank
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This Noritz TTS Series system pairs six tankless water heaters with a storage tank, providing up to 1,199,400 BTU/hr for large commercial hot water loads. Multiple units give redundancy and balanced heating, and the layout keeps the footprint small for its capacity.
The assembly runs on natural gas or LP. It measures 107 in. high, 135.75 in. wide and 38.5 in. long, and weighs 1,480 lb, a size and mass to account for when laying out the mechanical room.
Highlights
Six tankless heaters combined with a storage tank
Up to 1,199,400 BTU/hr combined capacity
Redundancy if one unit is offline
Equalized heating performance across units
Natural gas or LP operation
Specifications
Brand | Noritz |
Model | TTS-TWST6 |
Units | 6 |
Capacity | Up to 1,199,400 BTU/hr |
Storage | Storage tank included in system |
Fuel | NG or LP |
Series | TTS Series |
Height | 107 in. |
Width | 135.75 in. |
Length | 38.5 in. |
Weight | 1,480 lb |
Good to know
Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.

