Condensing Solo Boilers

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
Prestige Cascade Condensing Solo Boiler

Prestige Cascade

Prestige Cascade Condensing Solo Boiler Icon
Prefabricated boiler manifolds with capacities from 500,000 Btu/hr. to 2 million Btu’s in two different piping arrangements.
  • Joins 2 to 5 Prestige Boilers for Maximum Inputs of 500 to 2000 MBH
  • Utilizes the Prestige heat exchanger for up to 96% AFUE
  • Multi-function rack mounts and joins boilers to provided manifolds
  • Turndown ratio of up to 18 to 1
  • Common vent available for 2 or 3 boilers
  • Hydraulic junction minimizes head loss, provides air separation, and eliminates system debris through the built-in drain
Keystone Condensing Solo Boiler

Keystone Boiler

Keystone Condensing Solo Boiler Icon
The Keystone high-efficiency gas boilers is a powerful solution for large residential and light commercial applications.
  • 7 Boiler models from 399 to 1,200 MBH
  • Stainless steel heat exchanger
  • ASME Stamped Heat Exchanger
  • Thermal efficiencies of up to 97%
  • Turndown ratios up to 10:1
  • Compact footprint
  • Boilers 500MBH and greater are CSD-1 compliant
  • Low Nox - 2012 SCAQMD Certified
  • Large color touch screen display
  • Cascade up to 8 units for a capacity of 4,800 MBH

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