Weil McLain Ultra Boilers

Weil McLain Series 3 Ultra gas boiler 93% AFUE rating, highest efficiency comfort heating, models UG-80, UG-105, UG-155, UG-230, UG-310. The Weil Mclain Ultra Boiler is a 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.

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  • Ultra 80 - 62,000 BTU Output High Efficiency Boiler (Nat Gas) View Specs
    • SKU: 383-500-720
    • Brand: Weil Mclain

    $3,129.95 / each

    In Stock! (1 Available) Ships in 24-48 Hrs
  • Ultra 80 - 62,000 BTU Output High Efficiency Boiler (Propane) View Specs
    • SKU: 383-500-721
    • Brand: Weil Mclain

    $3,184.95 / each

    In Stock! (2 Available) Ships in 24-48 Hrs
  • Ultra 105 - 81,000 BTU Output High Efficiency Boiler (Nat Gas or LP) View Specs
    • SKU: 383-500-722
    • Brand: Weil Mclain

    $3,469.95 / each

    In Stock! (6 Available) Ships in 24-48 Hrs
  • Ultra 155 - 123,000 BTU Output High Efficiency Boiler (Nat Gas or LP) View Specs
    • SKU: 383-500-723
    • Brand: Weil Mclain

    $3,899.95 / each

    In Stock! (8 Available) Ships in 24-48 Hrs
  • Ultra 230 - 183,000 BTU Output High Efficiency Boiler (Nat Gas or LP) View Specs
    • SKU: 383-500-724
    • Brand: Weil Mclain

    $4,399.95 / each

    In Stock! (4 Available) Ships in 24-48 Hrs
  • Ultra 299 - 234,000 BTU Output High Efficiency Boiler (Nat Gas or LP) View Specs
    • SKU: 383-500-725
    • Brand: Weil Mclain

    $6,259.95 / each

    In Stock! (1 Available) Ships in 24-48 Hrs
  • Ultra 399 - 317,000 BTU Output High Efficiency Boiler (Nat Gas or LP) View Specs
    • SKU: 383-500-726
    • Brand: Weil Mclain

    $7,469.95 / each

    Non-Stock Item Allow 2-3 Weeks to Ship Out