P-K Thermific VELOX®

P-K Thermific VELOXTM Non-Condensing Boilers

Models: N750, N1000, N1500, N1700, N2000

Completely packaged, the P-K THERMIFIC VELOXTM boiler requires only five connections for easy installation, even on combustible floors.

When it comes to small size, but big output, the P-K THERMIFIC VELOXTM boiler is hard to beat – even the largest model can be moved through a 30″ doorway!

Multiple units can be installed in tandem in small areas to meet virtually any heating load, making it ideal for retrofitting. Its state-of-the-art vertical design, utilizing a radial-fired, fan-assisted burner and heat exchanger, is the key to efficient performance. This design enables it to operate at a CSA certified thermal efficiency of 85% as a Category I non-positive, non-condensing appliance

Model Documents
General Documents

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NURO® Touch-Screen Control System

Turndown energy usage

All of our boilers are equipped with the most intuitive interface in the industry, the NURO® Touch-Screen Control. Designed to maximize efficiency, the NURO® Control System monitors and modulates the combustion and ignition of the boiler to maintain the desired outlet temperature.


  • Up to 85% efficiency
  • Venting Category I
  • Completely packaged design
  • Compact/modular design allows multiple units to be installed in tandem
  • Vertical burner/heat exchanger design
  • Unique integral finned copper water tubes
  • High heat transfer ratio
  • Lo-Hi-Lo operating controls on some models
  • Operates quietly, below OSHA standards
  • CSA (AGA/CGA) certified and ASME approved


  • Highest achievable thermal efficiency level for non-condensing, gas-fired boiler
  • Does not produce highly corrosive condensate in either the heat exchanger or vent system when operated at recommended temperatures
  • Needs only five connections to install
  • Low installation costs
  • Low operating costs/lower fuel bills
  • Low maintenance
  • Compact to clear 30″ doorway
  • Sealed combustion design eliminates large air louvers and permits boiler installation in a negative pressure environment or adjacent to refrigerants
  • Optional hot water supply boilers constructed for domestic water use
  • Burner can be quickly and easily removed from the exchanger for cleaning or inspection
  • High heat transfer ratio and fast response to load requirements
  • Easy access, ideal for retrofits in inaccessible locations
  • 5 Year Warranty

Contact us to learn more about the Patterson-Kelley difference.

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