GSW Atmospheric vent gas tanks

GSW publishes the Atmospheric Vent as its entry-level gas water heater: air is drawn from inside the home and the exhaust is vented into a chimney or through the roof. The family is a natural-draft design, so it suits a home that already has a suitable chimney or approved vertical vent route; the model's installation manual controls the venting requirements.

The published feature set is aimed at durability and serviceability. GSW lists a glass-lined tank for protection against the corrosive effects of hot water, a heavy-duty anode rod for additional tank protection, and a turbulator dip tube that reduces sediment build-up at the bottom of the tank to prolong tank life. A piezoelectric ignitor lights the pilot without matches, a thermopile system provides a pilot that GSW says withstands environmental conditions such as downdrafts, and an LED indicator confirms the pilot is on and provides diagnostics and troubleshooting information. A thermostat allows easy temperature adjustment, and GSW describes maintenance as simple with an easy-to-access combustion chamber and a conveniently located drain valve.

The line is documented here at family level because the per-model capacities, first-hour ratings, inputs and UEF values sit in the linked Canadian spec sheet, which is the source used before any model row is published. The installation manual and the residential warranty sheet are linked alongside it. Whether CANRO supplies a given GSW Atmospheric Vent model for a project is confirmed at consultation, and CANRO names GSW among the brands it services on its own pages.