XTherm

1005A-4005

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Efficient & Reliable

The proven XTherm – vertical modulating condensing heater in sizes 999 to 4000MBTU – combines time-honored high-recovery copper fin technology with cutting edge control and combustion advancements. This product allows for broad installation flexibility, easy commissioning, and long-term reliability.

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MODEL SIZES

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  • product image
    • XTherm
      WH7-1005A
    • Input Rate
      999 MBTU/h
    • Thermal Efficiency
      97%
    • Sustainability Standout
    • Condensing
    • Indoor & Outdoor
    • ASME
    • Cascade
      Up to 8
    • Energy Type
      Gas
    • Turndown
      7:1
    • Venting
      Category IV
    • Voltage
      120VAC
    • 1-Phase
    • Max Water Flow
      70 GPM
  • product image
    • XTherm
      WH7-1505A
    • Input Rate
      1,500 MBTU/h
    • Thermal Efficiency
      97%
    • Sustainability Standout
    • Condensing
    • Indoor & Outdoor
    • ASME
    • Cascade
      Up to 8
    • Energy Type
      Gas
    • Turndown
      7:1
    • Venting
      Category IV
    • Voltage
      120VAC
    • 1-Phase
    • Max Water Flow
      70 GPM
  • product image
    • XTherm
      WH7-2005A
    • Input Rate
      1,999 MBTU/h
    • Thermal Efficiency
      97%
    • Sustainability Standout
    • Condensing
    • Indoor & Outdoor
    • ASME
    • Cascade
      Up to 8
    • Energy Type
      Gas
    • Turndown
      7:1
    • Venting
      Category IV
    • Voltage
      120VAC
    • 1-Phase
    • Max Water Flow
      70 GPM
  • product image
    • XTherm
      WH7-3005
    • Input Rate
      3,000 MBTU/h
    • Thermal Efficiency
      97%
    • Sustainability Standout
    • Condensing
    • Indoor & Outdoor
    • ASME
    • Cascade
      Up to 8
    • Energy Type
      Gas
    • Turndown
      10:1
    • Venting
      Category IV
    • Voltage
      120VAC
    • 1-Phase
    • Max Water Flow
      190 GPM
  • product image
    • XTherm
      WH7-3505
    • Input Rate
      3,500 MBTU/h
    • Thermal Efficiency
      97%
    • Sustainability Standout
    • Condensing
    • Indoor & Outdoor
    • ASME
    • Cascade
      Up to 8
    • Energy Type
      Gas
    • Turndown
      10:1
    • Venting
      Category IV
    • Voltage
      120VAC
    • 1-Phase
    • Max Water Flow
      208 GPM
  • product image
    • XTherm
      WH7-4005
    • Input Rate
      4,000 MBTU/h
    • Thermal Efficiency
      97%
    • Sustainability Standout
    • Condensing
    • Indoor & Outdoor
    • ASME
    • Cascade
      Up to 8
    • Energy Type
      Gas
    • Turndown
      7:1
    • Venting
      Category IV
    • Voltage
      120VAC
    • 1-Phase
    • Max Water Flow
      230 GPM