A. O. Smith ProLine XE power direct vent gas tanks

A. O. Smith Canada publishes the ProLine XE Power Direct Vent as a sealed-combustion gas storage water heater for homes where a chimney is not available and combustion air should not be drawn from the living space. The manufacturer states the sealed combustion chamber design eliminates the need for a flammable-vapour (FV) sensor, because combustion air comes from outside the home rather than from the room. An ultra-quiet blower moves the exhaust, and A. O. Smith Canada describes the ProLine XE models as residential water heaters with commercial-grade quality.

Venting is flexible: A. O. Smith Canada states the line can be vented with 2 in, 3 in or 4 in ULC S636 PVC, CPVC or polypropylene pipe up to 180 equivalent feet. The Canadian site links a specification sheet, installation manual, wiring diagram and the residential warranty sheet, all cited here, and states a 6-year limited tank and parts warranty. Because it is a sealed-combustion design it can suit tighter installations where an atmospheric or power vent unit drawing room air is not appropriate.

This page is written at family level because the per-model capacities, first-hour ratings and inputs sit in the linked Canadian specification sheet, which is the source used before any model row is published. A. O. Smith Canada does not print a numeric efficiency for the line on the product page, so none is recorded here. Whether CANRO supplies a ProLine XE Power Direct Vent for a project is confirmed at consultation, and CANRO names A. O. Smith among the brands it services on its own pages.