AO Smith Vertex Power Direct Vent 75-Gallon Gas Water Heater
AO Smith Vertex Power Direct Vent 75-Gallon Gas Water Heater Review
The AO Smith Vertex Power Direct Vent 75-Gallon Gas is A.O. Smith's premium 75-gallon condensing gas tank with power direct-vent venting. Higher BTU output and longer service life than typical 75-gallon atmospheric tanks.
Specs: 75 gallons stored, 100,000 BTU input, UEF 0.86 condensing, 150-gallon FHR, 8-year tank warranty. Sealed direct-vent PVC venting. ENERGY STAR certified.
The Vertex 75-gal combines large capacity + high BTU + condensing efficiency in one unit. Recovery rate ~95 gph at 90°F rise — substantially faster than typical 75-gallon atmospheric units (~70 gph). The combination handles 5+ person households with overlapping demand without the install complexity of tankless conversion.
About $1,700 unit, $3,400 installed including direct-vent piping. For households considering very-large-capacity solutions, the Vertex 75-gal sits between standard 75-gallon atmospheric ($2,200 installed, slower recovery) and parallel tankless install ($7,500+, endless hot water).
- Natural gas combustion — faster recovery than electric resistance at comparable tank size
- UEF 0.89 — above federal minimum EF 0.62; solid efficiency for a non-condensing gas unit
- 75-gallon capacity — right-sized for 3–4 person households with standard usage patterns
- 165-gallon first-hour rating — handles morning-rush simultaneous demand without shortfall
- High 100K BTU input — rapid recovery for large-volume commercial-residential applications
- Tank standby heat loss — tankless or heat-pump alternatives eliminate this continuous efficiency gap