Peerless® PUREFIRE®

Products » Residential Boilers » Peerless® PUREFIRE®

The Peerless® PUREFIRE® gas-fired condensing boiler is a high-efficiency boiler for residential applications and is available for either natural or LP gas. The direct vent, sealed combustion boiler has an ultra-high efficiency - up to 93.3% - and is ENERGY STAR® approved! The PUREFIRE®, available in five residential sizes has ASME and ETL certifications for both the U.S. and Canada and is the most thoroughly tested high efficiency boiler on the market! A unique condensate system with built-in neutralizer component and float switch protection is a top feature of the boiler.

Other great features include a high grade stainless steel burner and heat exchanger, 120 volt convenience outlet and LoNOx operation for the good of the environment. The PUREFIRE®’s fully modulating burner assures dependable operation and maximum boiler efficiency. Zero clearance to combustibles, easy access to controls and leveling legs are other standard features that allow for ease of installation and maintenance. Boilers are easily converted from LP to natural gas and from natural gas to LP without any additional parts. The PUREFIRE® is equipped with a full one-year parts and labor warranty (see “Warranty” section on this site for complete details).

State-of-the-Art Control Board

All Peerless® PUREFIRE® gas boilers are equipped with a state-of-the-art control board that offers modern technology such as an outdoor reset control with an additional outdoor temperature sensor and is cascade capable for operation of up to 16 units as a single module. The control board also has built-in technology for domestic hot water priority and an energy saving heat recovery function that improves hot water performance and reduces off cycle losses. Standby temperature of domestic hot water is controlled by economic low fire operation. Additionally, the control board’s LCD status display module uses plain English for easy-to-read status and troubleshooting text while a switch to "system test mode" enables contractors to manually control the firing rate.

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Type: Residential
Construction: Stainless Steel
Fuel: Gas-Fired (Natural or LP)
Input: 50 to 210 MBH
Output: 46 to 193 MBH
Venting: Sealed Combustion, Direct Vent
Trim: Water
Combustion: Direct Spark


  • Up to 93.3% AFUE
  • Gas-Fired Condensing Boiler
  • Fully Modulating Burner
  • Factory Tested, Pre-Mixed Gas Burner Technology
  • ASME and ETL Certified for U.S. and Canada
  • Outdoor Reset Capability
  • State of the Art Control Board
  • Cascade Capable—up to 16 Boilers


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Peerless® PUREFIRE® Gas Series
Model Number Input, MBH Heating Capacity3,MBH NET I=B=R Ratings Water1, MBH AFUE3, %
Min Max
PF-50 16 50 46 40 91.6
PF-80 20 80 74 64 92.7
PF-110 27.5 110 102 89 93.0
PF-140 35 140 131 114 93.0
PF-210 42 210 193 168 93.3

1 Net water ratings based on an allowance of 1.15.

2 Consult factory before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.

3 Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government test. Before purchasing this appliance, read important information about its estimated annual energy consumption or energy efficiency rating that is available from your retailer.

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PF-50, 80, 110 & 140


Peerless® PUREFIRE® Boiler Dimensions

Boiler Model Number Dimensions
PF-50 13-1/2" 17-3/16" 29-1/2" 3-1/8" 4-7/8" 2-7/16" 4-1/2" 5-1/8" 3" 1" N/A
PF-80 13-1/2" 17-3/16" 29-1/2" 3-1/8" 4-7/8" 2-7/16" 4-1/2" 5-1/8" 3" 1" N/A
PF-110 19-1/16" 17-3/16" 29-1/2" 3-1/8" 7-5/8" 2-7/16" 4-1/2" 5-1/8" 3" 1" N/A
PF-140 19-1/16" 17-3/16" 29-1/2" 3-1/8" 10-1/2" 2-7/16" 4-1/2" 5-1/8" 3" 1" N/A
PF-210 16-9/16" 17-3/16" 40-1/2" 1" 3" 3/4" 1-3/4" 4-1/2" 3" 6-1/2" 3-9/16"

Carton Dimensions & Shipping Weights

Boiler Model Number Length Width Height Approximate Shipping Weight (lbs.)
PF-50 21" 16" 36" 88
PF-80 21" 16" 36" 88
PF-110 21" 23" 36" 108
PF-140 21" 23" 36" 118
PF-210 21" 24" 48" 165

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