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Laars Mascot ST Condensing Water Heaters

The Mascot ST is a wall mounted condensing tankless water heater packed with features that easily satisfies the hot water needs of the modern home. Powering the Mascot ST is an advanced stainless steel condensing heat exchanger using the latest in combustion technology. The heat transfer tubes are constructed with corrosion resistant stainless steel and are precisely aligned to maximize heat transfer. This combination results in a system that delivers a quick heating response, exceptional efficiency and years of reliable service.


  • High Efficiency (0.95 Energy Factor)
  • 10:1 Modulation
  • Low NOx emissions
  • Reliable stainless steel condensing heat exchanger
  • Vent up to 100ft in PVC, CPVC or Polypropylene
  • Laars Water Heaters must be installed and serviced by a licensed contractor.
    When commissioning a water heater you will need an electrician and gas technician with combustion analyzer and manometer to properly set up your new appliance.
    $200 minimum order of any Laars parts. No returns are accepted.

    Wall-Mount 199MBH Condensing Tankless Water Heater w/o pump - Natural Gas

    Part No: MSTWW199NA1XX

    $1708.88 each

    Wall-Mount 199MBH Condensing Tankless Water Heater w/o pump - Propane

    Part No: MSTWW199PA1XX

    $1708.88 each


    Toll Free: (866) 361-4782

    Fax: 206-274-1501

    17420 Vashon Hwy SW
    PO Box 2270
    Vashon, WA 98070

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