Rheem G72-300A 72 Gallon Natural Gas Commercial Water Heater 300000 Max BTU Input

- Item #: BCI2143220

Offer Ends

Originally $6,265.62, You Save 20%
Free Shipping!
2 In Stock
Ships in 1 to 2 business days, by December 24th


Please select a finish

Earn 5,012 points with the purchase of this product Learn More

and earn 350pts

Questions about Rheem G72-300A?

Contact us for advice or more details. Our product specialists are here to help.

Universal Heavy Duty Collection Commercial Natural Gas Water Heater with 72 Gallon Tank

The Universal Heavy Duty collection of water heaters is an excellent choice for commercial retrofits. Its compact size and multiple water connections simplify installations. Need installation flexibility? This water heater has water inlets and outlets on top, front, and rear.

Minimize Down Time

The stainless steel burner assembly slides out like a drawer for quick inspection and maintenance. Factory installed brass drain valve features full-port, full flow which allows faster draining and servicing. Multiple magnesium anode rods ensure corrosion resistance for longer tank life.

Save money

The Direct Spark-to-Pilot ignition is designed to save energy and only ignites the pilot when there is a call for heat.

Patented Technology

Patented multi-flue design using a proprietary steel formulation, combined with two coats of porcelain enamel, and the results equal a superior heat exchanger.

System Sentinel

Rheem's exclusive diagnostic system. It watches over the water heater and verifies system operation sequence by sequence via LED lights.

ASME Construction

This water heater is constructed in accordance with the requirements of the ASME Boiler and Pressure Vessel Code, Section IV Part HLW.


  • Ideal for retrofits
  • Maximum Temperature Setting: 180 degrees F
  • Water Inlets: Top, Front, and Rear
  • Water Outlets: Top, Front, and Rear
  • Stainless Steel Burner
  • Sentinel LED Diagnostic System
  • Multiple magnesium anode rods
  • Direct Spark-to-Pilot ignition System
  • Factory installed full-port, full flow brass drain valve
  • ASME Construction


  • Tank Capacity: 72 Gallons
  • Thermal Efficiency: 80%
  • Performance:
    • Recovery at 60 degree rise: 485 Gallons/Hour
    • Recovery at 70 degree rise: 416 Gallons/Hour
    • Recovery at 80 degree rise: 364 Gallons/Hour
    • Recovery at 90 degree rise: 323 Gallons/Hour
    • Recovery at 100 degree rise: 291 Gallons/Hour
  • Max BTU Input: 300000
  • Warranty: 3 Year Limited Tank
  • Altitude Certification: 5000 ft. above sea level

Rheem has been manufacturing water heaters since the 1930's, with coast to coast distribution by 1936. Their product offerings cover commercial and residential heating, cooling, solar water heating systems, conventional storage-style water heaters, tankless water heaters, replacement parts and accessories. Rheem's manufacturing facilities are ISO 9001 certified, with four facilities in the United States. Choose an industry leader that is respected for reliability. Choose Rheem.

Additional Rheem Links

Our SKU: Rheem G72-300A

This product is listed under the following manufacturer number(s):

  • Rheem G72-300A

*Denotes a finish or option that has been discontinued

Rheem G72-300A Product Specifications

Specification Sheet
Installation Sheet
ANSI Approved Yes
ASME Approved Yes
Altitude Certification 5000
CSA Listed Yes
Capacity (Gallons) 72
Diameter 26.25
Fuel Type Natural Gas
Gas Connection 3/4"
Height to Gas Connection 7
Height to Temperature and Pressure Relief Valve 58.625
Height to Vent 71
Max BTU Input 300000
Maximum Temperature 180
Minimum Clearance Rear 6
Minimum Clearance Side 6
Minimum Clearance Top 12
Minutes to Recover Contents 15
Recovery 323
Required Vent Size 8"
Series Universal Heavy Duty
Shipping Weight 630
Tank Height 64.125
Thermal Efficiency 80
Voltage 120
Warranty 3 Year Limited Tank
Water Connection 1-1/2"
Water Connection Center to Center 20
Water Pressure (Max) 160

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Buy the Rheem G72-300A at Build.com. Research Rheem G72-300A online. Find Rheem G72-300A features and specifications. Get the best deal by comparing the Rheem G72-300A today.

Recently viewed items
× Shipping Rates & Methods

The cost to ship items varies by item, shipment and shipping option.

Free Ground Shipping on Orders Over $49 *

Standard ground shipping transit time is 5-7 business days.

Free Freight Shipping on Orders Over $1500 *

Curb side delivery (also called freight or "LTL" shipping) is reserved for large, heavy, or oversized items like chandeliers, bathtubs, shower doors, etc. Items are palletized and loaded onto a large truck for shipment, and delivered to your curb by scheduled appointment. Transit time is 7-10 business days.

* For exact shipping costs, add the product(s) to your cart and enter your zip code. All offers pertain to the lower 48 states and do not include deliveries to Alaska, Hawaii or Canada.

Learn more about shipping rates and policies