Warranty & Registration Lookup
Register your Rheem product or verify your warranty terms and coverage.
Find a Pro
Put your water heater and heating and cooling system installation in good hands with a trustworthy, independent Rheem Pro.
Replace a Part
Find what you need to keep your Rheem equipment working perfectly.
Blogs
Read articles and industry news for homeowners and contractors.
Financing
Don’t let a limited budget keep you from getting the comfort equipment you need for your home or business.
FAQs
Get answers to all the most frequently asked questions (FAQs) about Heating, Cooling & Water Heating.
Who We Are
Learn more about Rheem, our history and our commitment to sustainability.
Sustainability
Learn about our commitment to doing good by our customers, our partners, our employees - and our planet.
Careers
Passionate, innovative thinkers work here, grow here and impact the next generation. We are driven to provide the perfect degree of comfort for homes and businesses.
Our Leadership
Find detailed profiles of our company's key executives, highlighting their professional backgrounds, expertise, and roles within the organization.
News Releases
Stay up to date with the latest news and press releases from Rheem Manufacturing and its family of brands.
Blogs
Read articles and industry news for homeowners and contractors.
svg-icon
Residential Products
svg-icon

Xtreme

MODEL GX90-715A
  • 3-Year limited tank warranty
  • 90-Gallon Capacity
  • 500,000-715,000 BTU/h
  • Low NOx performance, less than 40ng/J
  • Energy Saving Ignition System

SKUGX90-715A
ModelXtreme
FuelNatural Gas
Height68"
Single Shower Minutes41
Number Back To Back Showers4
CO2 Reduction CategoryNo Rating

Features & Benefits

  • Xtreme is an advanced line of fast recovery commercial gas water heaters. These products can deliver up to 693gallons per hour at 100 degree F rise.The small jacket diameter makes it a popular choice for retro fits and it is a versatile choice for new construction. Models range from 500,000-715,000BTU/h, with a maximum temperature setting of 180 degrees Fahrenheit.

Space Saver Design

  • Xtreme maximizes installation adaptability by offering models with front and rear inlet/outlet water connections. Short heights and small jacket diameters result in greater installation flexibility. 

System Sentinel LED Diagnostic System

  • Our exclusive diagnostic system, with glowing LED lights, verifies system operation sequence by sequence.

Multi-Flue TankDesign

  • Proprietary steel formulation, patented multi-flue design, and two coats of high temperature porcelain enamel maximize corrosion resistance and result in a superior heat exchanger design.

Automatic Flue Damper

  • Low profile design minimizes overall product height. Heavy duty vent hood supports are designed to withstand rigors of installation.

Specialized Burner Assembly

  • Each model features five premix burners mounted into a metal face plate and sealed with a Viton gasket. Innovative “quick release” manifold for easier service.

Direct Spark-to-Pilot Ignition System

  • Energy saving ignition that ignites pilot only when there is a call for heat. 

Round Premix Burners 

  • Precision burners are formed from high chromium stainless steel.

Low NOx Emissions

  • GX90-550 and GX90-640 meet low NOx emissions of less than 40 ng/J.

Full-port, Full-flow Drain Valve

  • Factory installed brass drain valve allows for faster draining and servicing.

Altitude Certifications

  • Standard Natural and LP models are certified up to 2,000 feet. High altitude models, 8,000 feet.

Anode Rods

  • Design utilizes multiple magnesium rods to ensure long life and corrosion resistance.

  • 3-Year limited tank warranty