Condensing Solo Boilers

Instinct Solo

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Triangle Tube brings you the Instinct, the future in high-efficiency condensing boilers.
  • NEW - Market-leading Warranty Program with up to 6-Years Parts, 3-Years Labor Allowance and 10-year Primary Heat Exchanger Warranty
  • Stainless Steel Fire Tube Heat Exchanger
  • Industry Leading Performance with 5+ GPM Hot Water while Fully Condensing
  • Turndown ratio up to 8:1
  • Efficiency Rating of 95%
  • CTRLMAX Control System with 60 Second Set-up
  • 3 in 1 Universal Vent Adapter
  • ASME Certified
  • Natural Gas or Propane
Pestige Solo Condensing Boiler

Prestige Solo

Pestige Solo Condensing Boiler Icon
High efficiency wall mounted gas condensing boiler. 95% energy efficient. Available in a broad range from 80 to 399 MBTU.
  • NEW - Market-leading Warranty Program with up to 6-Years Parts, 3-Years Labor Allowance and 10-year Primary Heat Exchanger Warranty
  • 439 Stainless Steel Fire Tube Heat Exchanger
  • Turndown ratios up to 5.5:1
  • South Coast Air Quality Management District Listed
  • Efficiency Rating of 95%
  • ASME Certified
  • Energy Star Listed
  • Natural Gas or Propane
  • 60 Second Set-up
  • Integrated Cascade Function for up to 6 Boilers
Challenger Solo Condensing Boiler

Challenger Solo

Challenger Solo Condensing Boiler Icon
High Efficiency Space Heating in a Compact Package
  • Energy efficient with up to 92.3% AFUE
  • ASME Stamped Heat Exchanger
  • Low NOx- 2012 SCAQMD certified
  • Indirect Water Heater Compatible
  • Dual material heat exchanger with glycol compatible copper waterways
  • Advanced control with near 4:1 modulation and standard outdoor reset
  • Twin pipe (PVC, CPVC, PP, or AL29-4C) or Concentric venting
  • Compact size for closet installation
  • Whisper-quiet operation
  • EZ-Install piping bracket

Product Comparison

Model Fuel Input Modulation (mbh) Turndown AFUE DOE Heating Capacity (mbh) Net AHRI Rating (mbh)
Instinct 110 NG/LP 13 to 110 8 : 1 95% 102 89
Instinct 155 NG/LP 19 to 155 8 : 1 95% 142 123
Instinct 199 NG/LP 24 to 199 8 : 1 95% 184 159
Prestige 80 NG/LP 16 to 80 5 : 1 95% 74 64
Prestige 110 NG/LP 20 to 110 5.5 : 1 95% 102 89
Prestige 155 NG/LP 28 to 153 5.5 : 1 95% 142 123
Prestige 175 NG/LP 31 to 170 5.5 : 1 95% 157 137
Prestige 250 NG/LP 43 to 240 5.5 : 1 95% 222 193
Prestige 299 NG/LP 72 to 299 4.1 : 1 95% 278 242
Challenger 50s NG/LP 13.5 to 51 3.8 : 1 95% 46 40
Challenger 85s NG/LP 23 to 84 3.7 : 1 94% 75 65
Challenger 105s NG/LP 29 to 106 3.7 : 1 94% 94 82
Challenger 125Hs NG/LP 33 to 125 6.3 : 1 95% 111 97
Challenger 150s NG/LP 33 to 145 4.4 : 1 92.3% 129 112

Product Comparison

Model Fuel Input Modulation (mbh) Turndown Combustion Efficiency Thermal Efficiency Net AHRI Rating (mbh)
Prestige 399 NG/LP 72.5 to 399 5.5 : 1 94.1% 95.1% 330,000
Find our larger boiler sizes here