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P-K STORM® Condensing Boilers
P-K STORM® Condensing Boilers
P-K STORM® Condensing Boilers
P-K STORM® Condensing Boilers
P-K STORM® Condensing Boilers

    P-K STORM® Condensing Boilers

    Patterson-Kelley continues to transform the commercial boiler industry by offering the highest quality, most efficient, condensing products available. Our newest stainless-steel condensing boiler is designed for maximized comfort during those long cold winter days, without sacrificing savings.

    Built to transform the commercial boiler market, this top-of-the-line, highly efficient condensing boiler is designed to provide long-term savings in energy costs. The P-K STORM® is AHRI Certified at 97.1% thermal efficiency with 10:1 mechanical turndown capabilities.

    Features:

    • 650-8000 MBTU
    • Up to 97% thermal efficiency
    • 316L Stainless steel coil ensures maximum corrosive resistance and durability
    • Full modulation burner with up to 10:1 mechanical turndown
    • Cabinet and heat exchanger design reduce repair and maintenance costs
    • Outdoor Capabilities
    • Variable speed combustion air blower
    • Certified at 3.5 inch Water Column minimum gas pressure
    • Low pressure drops across the unit
    • The compartmentalized design produces an efficiency of heat transfer in each section

    Models: ST1250, ST1500, ST1750, ST2000, ST2500, ST3000, ST3500, ST4000, ST5000, ST6000, ST8000

    Specification
    • Standard 10:1 Mechanical Turndown 
      10:1 Turndown Technology Increases Efficiency and Reduces Operating Cost

      Patterson-Kelley has achieved higher turndown with a unique mechanical process that allows the gas valves to control boiler performance without increasing excess air. This results in building flexibility and efficiency.

      This method delivers a 10:1 turndown rate while preserving a high dewpoint, which helps maintain high condensation levels. This higher turndown capability will provide designers the ability to match input to building loads without sacrificing efficiency and reliability. No more nuisance flame failures that have traditionally plagued high turndown boilers.

      Outdoor Technology Options Available On Models ST1250-ST2000

      Factory assembled and tested for outdoor installations with efficiencies up to 97% and a 10:1 mechanical turndown rate, outdoor models come assembled from the factory without requiring time in the field to make conversions. For buildings with limited indoor space, this option on the P-K STORM® is ready for any predicted forecast.

      NURO® Touch-Screen Control SystemTurndown 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.

    Technical specification
    • Unique ref.p-k-storm-condensing-boilers
    • Product familyCommercial Boilers
    • Product groupCondensing Boilers
    • TypeObject (single object)
    • Date of publishing2026-01-07
    • Edition number1
    Related
    • Designed inUnited States
    • Manufactured inUnited States
    Classification
    • BIMobject CategoryHVAC - Boilers
    • IFC classificationBoiler
    • ETIM CodeEG015210
    • ETIM NameBoilers and heaters
    • Uniclass 2015 CodePr_60_60_08
    • Uniclass 2015 DescriptionBoilers
    • CSI MasterFormat 2014 Code23 52 16
    • CSI MasterFormat 2014 TitleCondensing Boilers
    • OmniClass Number23-33 11 13
    • OmniClass TitleCondensing Boilers

    Region availability

    North America Asia
    Anguilla
    South Korea
    Antigua and Barbuda
    Aruba
    Barbados
    Belize
    Bermuda
    British Virgin Islands
    Canada
    Caribbean Netherlands
    Cayman Islands
    Collectivity of Saint Martin
    Costa Rica
    Cuba
    Curaçao
    Dominica
    Dominican Republic
    El Salvador
    Greenland
    Grenada
    Guadeloupe
    Guatemala
    Haiti
    Honduras
    Jamaica
    Martinique
    Mexico
    Montserrat
    Nicaragua
    Panama
    Puerto Rico
    Saint Kitts and Nevis
    Saint Lucia
    Saint Pierre and Miquelon
    Saint Vincent and the Grenadines
    Saint-Barthélemy
    Sint Maarten
    The Bahamas
    Trinidad and Tobago
    Turks and Caicos Islands
    U.S. Virgin Islands
    United States
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