High Efficiency Boilers

Triangle Tube High Efficiency Boilers

High Efficiency Boilers

ACVMAX, User-friendly Control System

Choose from 6 standard heating applications to set up the boiler in 60 seconds or less

  • Finned Tube
  • Baseboard Cast Iron
  • Baseboard Radiators
  • High Mass
  • Radiant Low Mass
  • Radiant Fancoil

Integrated Cascade

  • Joins up to 6 boilers
  • Master boiler automatically recognizes linked boilers
  • Meets simultaneous DHW & Space Heating calls
  • Full Parallel Modulation
  • Automatic Duty Cycling

Intelligent Troubleshooting

  • Describes lockouts in plain English & suggests solutions
  • Records sensor readings for 24 hours
  • Stores last 8 errors.
High Efficiency Boilers cut-away-view

Multiple Zone Control

  • Accepts 2 space heating calls with independent outdoor reset curves
  • Simultaneously heat dual temperature heating systems with built-in mixing valve control
  • Manage up to 2 space heating zones and 1 DHW zone without an external zone control panel

Multiple Circulator Control

  • Presets allow for quick configuration of 4 circulator outputs
  • Circulator outputs fully configurable for custom applications

439 Stainless Steel Heat Exchanger

Our proven Firetube heat exchanger is not only corrosion resistant; it‘s also designed to maximize heat transfer with low thermal stress. That results in peace of mind with unparalleled reliability and longevity.

Low Maintenance Design

The condensate washes combustion residue away when streaming down the tubes for high efficiency and reduced maintenance.

“Tank-in-Tank” Technology (Combi)

The Prestige Excellence Combination Boiler incorporates our 14 gallon indirect fired water heater in the cabinet that is capable of producing 180 GPH of domestic hot water. Heating and Hot water perfectly integrated into one unit.

Installation Flexibility

Prestige works as the ideal solution for any installation by offering the widest range of venting and termination options available.

High Water Content

  • Provides stable temperature control
  • Low sensitivity to water flow changes
  • Reduces short cycling
  • Adapts to large or small heating loads

Reliable Low Maintenance Design

  • High-performance burner design
  • ASME Stamped
  • Low NOx
  • 2012 SCAQMD Certified
  • 12-year history of reliable performance


  • 2″, 3″, & 4″ diameters depending on model
  • PVC, CPVC, SS & Polypropylene materials
  • Flexible Polypropylene for chimney chases
  • Concentric (299/399 only) or twin pipe
  • Extended vent lengths up to 100 feet
  • Common vent for multiple boilers (299/399 only)


  • Traditional PVC/CPVC/PP/SS piping elbows
  • Flush-mount PVC for twin pipes
  • Flush-mount Stainless Steel for twin pipes
  • Single hole Concentric Termination for twin pipes
  • Horizontal Concentric Termination (299/399 only)
  • Horizontal and Vertical Common Vent Terminations (299/399 only)