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Rheem Tanked Natural Gas Direct Vent
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Rheem Performance Direct Vent 50 Gallon Natural Gas Water Heater with 6 Year Limited Warranty

SKU: 644400

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Product Details

Rheem 644400

PERFORMANCE direct vent water heaters use outside air for combustion, offer longer venting options and a coaxial vent for easy installation.


  • Collection Performance
  • UPC 020352644400
  • Online Product ID 10769999
  • Height 59.5"
  • Diameter 21.75"
  • Oversized yes
  • Warranty 6 years
  • Sink Length 26.188"
  • Capacity (gal.) 50
  • Fuel Type Natural Gas
  • Unit Of Measure Each
  • Application Residential
  • First Hour Recovery Rate 79 gph
  • Heating Capacity 36000 Btu/hr
  • Height To Vent Connection 68''
  • Ignition Type Piezo
  • Install Location Indoor
  • Number Of Back To Back Showers 1
  • Recovery Rate At 90 Deg F 36.4 gph
  • Safetylist AHRI Certified, CSA Certified
  • Tank Height 59.5''
  • Uniform Energy Factor Uef 0.61
  • Vent Size 6''
  • Vent Type Direct Vent
  • Shipping x W:22.75"x H:70.56" 177 lbs.

Additional information

  • FHR: 78 gal
  • Recovery: 36.4 gph at a 90 deg F rise
  • Adjustable coaxial vent allows flexibility of installation, can swivel 360 deg and uses outside air for combustion and requires no electrical power
  • Aluminum vent and cap base to prevent staining of building exterior
  • Longer venting options available, see chart on reverse
  • Exclusive air/fuel shut-off device
  • Maintenance free - no filter to clean
  • Disables the heater in the presence of flammable vapor accumulation
  • Meets 40 ng/J NOx requirements
  • Premium grade anode rod provides long-lasting tank protection
  • Temperature and pressure relief valve included
  • Low lead compliant
  • Exclusive Rheemglas tank lining resists corrosion and prolongs tank life
  • Heat saving flue baffle design
  • Gas control and combination thermostat
  • Piezo ignition
  • High temperature silicone bands reduce venting installation time
  • Internal air tube for reduced footprint
  • EverKleen patented system fights sediment build-up

About This Brand

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