50-Gallon Ultra-Low NOx Power Direct Vent Residential Gas Water Heater

Model 8-50-MTPDT 400
Capacity (Gallons)
Fuel Source

  • ENERGY STAR® certified—0.88 UEF, 96% thermal efficiency
  • AiQ™ Adaptive Gas Control—Allows seamless switching between natural gas and liquid propane via a touch screen for maximum flexibility
  • Delivers 118-gallon first hour rating
  • 50-Gallon Ultra-Low NOx Power Direct Vent Residential Gas Water Heater
    Model 8-50-MTPDT 400
    Product Details
    • ENERGY STAR® certified—0.88 UEF, 96% thermal efficiency
    • AiQ™ Adaptive Gas Control—Allows seamless switching between natural gas and liquid propane via a touch screen for maximum flexibility
    • Delivers 118-gallon first hour rating
    • Powered Anode—Enhances protection against corrosion, ensuring long-lasting performance
    • Leak Detection Technology—Alerts homeowners immediately in case of a leak, ensuring quick response and minimizing potential damage
    • Power Direct Vent Design—Supports vertical and horizontal venting with PVC, CPVC, or polypropylene pipes for easy installation
    • Ultra-Low NOx Gas Burner—Complies with SCAQMD Rule 1146.2 and similar air quality standards, reducing NOx emissions to less than 14 ng/j for environmentally friendly operation
    • Blue Diamond® Glass Coating—Provides superior corrosion resistance compared to standard glass lining, extending the lifespan of the water heater
    • Side-Mounted Recirculating Taps—Enables combination space heating and water heating applications for added versatility
    • 8-year limited warranty

    • Reliance® Ultra-Low NOx Power Direct Vent Residential Gas Water Heaters are the perfect solution for homeowners seeking high performance, energy efficiency, and environmentally friendly operation. Designed with a top-fired Ultra-Low NOx gas burner, these water heaters comply with strict air quality standards, including SCAQMD Rule 1146.2, ensuring NOx emissions remain below 14 ng/j. This advanced technology not only reduces environmental impact but also delivers reliable, consistent hot water for your household needs. With a fully condensing design and a 0.88 UEF (96% thermal efficiency), these water heaters save money on operating costs while providing continuous hot water at a constant flow rate of 4 gallons per minute.

      Engineered for versatility and durability, Reliance® Ultra-Low NOx Power Direct Vent models are available in 50- and 75-gallon capacities, making them ideal for a variety of home sizes. Featuring smart technology like AiQ™ Adaptive Gas Control, leak detection alerts, and a powered anode for superior corrosion resistance, these water heaters are built to last. The Blue Diamond® Glass Coating further enhances durability, while side-mounted recirculating taps allow for combination space heating applications. With easy installation, code compliance, and a sleek design, Reliance® water heaters are the ultimate choice for modern, eco-conscious homeowners.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    50 Gallons
    Rated Storage Volume
    49 Gallons
    UEF
    0.88
    Thermal Efficiency
    96%
    Maximum BTUs
    100,000
    Power Source
    GAS
    Limited Tank Warranty
    8 Years
    Limited Parts Warranty
    8 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    First Hour Rating
    118 Gallons
    ASME Certified
    No
    Amperes
    5
    Destination Country
    US
    ENERGY STAR® Certified
    Yes
    Fuel Source
    MULTIPLE
    Height to T&P
    49.25
    Installation Type
    INDOOR
    Minimum BTUs
    100,000
    Application
    RESIDENTIAL
    Shipping Height 
    78.38
    Shipping Length 
    31.25
    Shipping Width 
    28.5
    Side Loop
    Yes
    Voltage
    120
    Dimension & Venting
    Type
    Water Heater
    Height
    66.75"
    Diameter
    22 in."
    Shipping Weight
    256 lbs
    Vent Type
    Power Direct Vent
    Height to Gas Valve
    65"