A. O. Smith ProLine XE power vent gas tanks

A. O. Smith Canada publishes the ProLine XE Power Vent for homes where conventional chimney venting is not an option: air is drawn from inside the home and a blower forces the exhaust outside. The line can be vented with 2 in, 3 in or 4 in ULC S636 PVC, CPVC or polypropylene pipe, which A. O. Smith Canada describes as an industry-leading energy-efficient power vent line. Because it draws combustion air from inside the home, it is not a sealed-combustion design, and the model's installation manual controls the full venting requirements.

The manufacturer states UEFs up to 0.73 for the line and describes the ProLine models as residential water heaters with commercial-grade quality. The Canadian site links a specification sheet, installation manual, wiring diagram and the residential warranty sheet, all cited here. A. O. Smith Canada states a 6-year limited tank and parts warranty for the line, with an 8-year limited tank and parts warranty on the HPVL and HPVX models; those model-specific terms are read from the linked warranty sheet rather than restated beyond the manufacturer's published line.

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. The 0.73 UEF is the line maximum published by A. O. Smith Canada and is not converted to a legacy EF. Whether CANRO supplies a ProLine XE Power Vent for a project is confirmed at consultation, and CANRO names A. O. Smith among the brands it services on its own pages.