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  • Weil Mclain Ultra 105 CT High Efficiency Boiler Propane or Natural Gas 383-500-722

    Brand & Part #: Weil-McLain 383500722 SKU #: wei383500722

    UPC #: 672619200005

    Availability : In stock

    Only 2 left

    Regular Price: Was: $5,258.00


    You Save $1,795.00 (34%)

    Helpful Information



    Series 3 Ultra CT Boilers

    Note: Product Title reflects this boiler's IBR Net Output Rating

    Key Features

    • Gas fired water boiler with cast aluminum heat exchanger
    • Venturi mixing body mixes air and gas providing higher efficiency
    • Designed to operate in low temperature condensing applications
    • Outdoor reset and domestic hot water priority standard
    • Negative regulated gas valve precisely delivers gas to the boiler
    • Electronic control module automatically adjusts blower speed and gas flow rate in response to environment
    • Modulates with 5 to 1 turndown ratio
    • Variable speed motor matches combustion output to heating need
    • High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications.
    • Propane Conversion Orifice included for LP Gas Applications

    NOTE: May require the use of a lift gate. Please note the product weighs 207 lbs. 


    Fuel Type: Propane
      Natural Gas
    AFUE % 94%
    System Type: Hydronic (Water)
    Features: Condensing
      EI/Spark Ignition
      Direct Vent
    Vent Size: 2"
    Water Connection: 1"
    Gas Connection: 1/2"
    BTU Input: 105000
    DOE Rating: 94000
    IBR Rating: 81000
    Warranty: Limited 15 Year Warranty on Heat Exchanger/ 1-year on parts
    Depth (Inches): 19-15/16"
    Height (Inches): 43-1/16"
    Width (Inches): 22-13/16"
    Vent Type: PVC
    Boiler Type: High Efficiency
    Application: Heating

    Additional Info

    Additional Info

    MPN 383500722
    Brands Weil-McLain
    Fuel Type Natural Gas
    BTU Input 100,000 - 125,000
    BTU Output 75,000 - 100,000
    Availability Available to Ship Immediately
    Special Shipping Group boilerover


    Customer Reviews (2)

    Heat exchanger cracked at 6 yr markReview by Jon
    Junk - no warranty at 6 years... (Posted on 6/29/2015)
    Heat exchanger crackedReview by Jktimm
    Very easy to install, and economical to run. Heat exchanger cracked after 5 years, no one to cover warranty. (Posted on 9/16/2014)
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