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A.O. Smith Vertex™ Power Vent Water Heater (Model GPHE-50)

  • 90% Thermal Efficiency
  • Endless Hot Water
  • Versatile Power Vent Design

Today’s homes demand more hot water than ever before, and the 90% efficient Vertex power vent gas water heater offers unprecedented levels of performance to meet the need. The 50-gallon Vertex delivers hot water output that rivals a 75-gallon atmospheric gas water heater. In fact, the fully condensing Vertex design is so advanced, it can deliver “endless hot water for showers”…a continuous flow of over 3 gallons per minute.* Yet Vertex is easy to install, with height, diameter and installation requirements similar to standard power-vent units.

Helical Internal Heat Exchanger

  • Positioned in the center of the tank, surrounded by water to virtually eliminate radiant heat loss from the chamber
  • Achieves 90% thermal efficiency which saves money on operating costs compared to a standard 78% efficient gas water heater

Power Vents Using PVC Pipe

  • Combined vertical and horizontal runs terminating through an outside wall. Vents using PVC, CPVC or ABS pipe. Canadian installations require ULC S636 approved PVC or CPVC pipe for venting.
  • 2” pipe, vents up to 25 equivalent feet
  • 3” pipe, vents up to 65 equivalent feet
  • 4” pipe, vents up to 128 equivalent feet

Modular Blower

  • Equipped with 120 volt, 60 Hz electrical system (rating 5 amps or less), 6-foot cord with standard 3-prong connector
  • 2" PVC pipe, elbows and condensate drain supplied to connect heat exchanger outlet to blower
  • PVC Vent Attenuation Assembly (VAA) supplied

Side-Mounted Hot and Cold Recirculating Taps

Allows Vertex to be installed as part of combination space heating/water heating applications or any system requiring a recirculating hot water loop, including radiant floor heating

Intelli-Vent™** Gas Control

  • Equipped with nearly indestructible silicon nitride hot surface ignitor — no standing pilot
  • Advanced electronics for more precise control of water temperature and easy to understand system diagnostics

Commercial Grade Glass Lining

  • A. O. Smith PermaGlas® Ultra Coat™ process provides superior protection against corrosion
  • Protects all interior tank surfaces including inside and outside of helical heat exchanger

Two Heavy-Duty Anode Rods

  • Provide maximum protection against corrosion

Green Choice® Gas Burner

  • Patented “Eco-Friendly” design reduces NOx emissions by up to 33% and meets less than 40ng/j requirements for low NOx emissions

CSA Certified and ASME Rated T&P Relief Valve

Maximum Hydrostatic Working Pressure: 150 PSI

Codes and Standards

  • Design-certified by UL (Underwriters Laboratories) according to ANSI Z21.10.3 - CSA 4.3 Standards
  • Meets or exceeds the thermal efficiency and standby loss requirements of the U. S. Department of Energy and ASHRAE/IESNA 90.1

Six Year Limited Tank and Parts Warranty

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Lead times vary, depending on the unit. Please contact us for pricing and product availability.

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GPHE-50 NG Vertex High Efficiency Power Vent Water Heater
50 gallon, Natural Gas, 76,000 BTU


*IMPORTANT: By purchasing this boiler from JupiterHeating.com, the customer is agreeing that the unit will be installed by a licensed, professional heating contractor; that the customer and installer will follow all local zoning regulations, as well as all manufacturer's installation instructions, policies, and warranty requirements; and that the customer has read and understood JupiterHeating.com's Terms of Sale.

Shipping for unit is $200 to anywhere in the continental United States (multiple units are shipped at no additional charge). The rate is based on residential delivery with a liftgate. This unit is strapped onto a pallet and shipped via LTL to minimize risk of shipping damage. Shipping savings may by possible for commercial delivery, or for not needing a liftgate. Contact Us for a custom shipping quote if any of those situations apply, or if you are located outside the continental United States.