Hot Water Heating


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P-K MACH® Dual Fuel Condensing Boilers

Models: C750-GG (750 MBTU), C900-GG (900 MBTU), C1050-GG (1050 MBTU), C1500-GG (1500 MBTU), C2000-GG (2000 MBTU), C2500-GG (2500 MBTU), C3000-GG (3000 MBTU), C4000-GG (4000 MBTU)

Just switch between Natural Gas/Liquid Propane – No adjustment. No modifications. Just flip the switch!

P-K MACH® dual fuel boilers can change from natural gas to liquid propane with the flip of a switch; allowing the boiler to run in emergency situations, which is crucial for school and healthcare environments. So when you’re in need of a reliable, efficient boiler…switch to P-K.

Easy as the flip of a switch

Many customers have relied on Harsco Industrial Patterson-Kelley’s MACH® condensing boilers for when they need a condensing boiler that is reliable, efficient and constructed of quality materials.  The P-K MACH® condensing boiler is an ideal choice for a wide variety of commercial and industrial building applications, including new construction as well as retrofit projects.

We have recently taken a step to improve on the success of the P-K MACH® boiler with the introduction of P-K MACH Dual Fuel boilers.

The P-K MACH® dual fuel boiler can easily be switched from natural gas to liquid propane, allowing the boiler to run even in emergency situations, which is often a crucial requirement for hospitals and schools.

Discounts for interruptible gas service may also be available in your area, allowing you to save extra money.



Sized to get in and fit in.

Installation time is reduced

There’s no rigging required to put your P-K MACH® condensing boiler in any room of your building, whether it’s the basement or the penthouse. All P-K MACH® condensing boilers fit through a standard 36 inch doorway or a standard elevator.

Our largest models (1,500,000 BTU/hr and larger) are equipped with wheels which means they can be moved by two people without a forklift.  The narrow design of all P-K MACH® condensing boilers allow them to navigate corners and hallways with ease.

P-K MACH condensing boilers are perfect for new installation and retrofit projects, requiring only 4 hook ups – gas, water, electric and venting.

Fire it up!

Your aluminum solution

P-K MACH® condensing boilers feature fully independent cast aluminum heat exchangers. Aluminum is easier to cast than other metals.  The result is increased heat transfer surface for higher efficiency.  The aluminum heat engine easily sheds condensate thanks to an aluminum oxide barrier that forms during use for extreme corrosion resistance.

The Heat Engine

The heart of the P-K MACH Condensing Boiler


P-K MACH® condensing boilers are CSA certified at 92% – 96% efficiency, with actual thermal efficiencies up to 99%. This can help qualify for federal, state and utility rebates.

NUROTouch-Screen Control System

Turndown energy usage

The P-K MACH® is equipped with the latest touch-screen technology, the NURO Touch-Screen Control. It provides the most intuitive interface in the industry. Designed to maximize efficiency, the NURO Control System monitors and modulates the combustion and ignition of the boiler to maintain the desired outlet temperature.


The NURO®‘s easy-to-use touch-screen interface provides simple step-by-step navigation for set-up, maintenance, custom adjustments, efficiency, help and more.


The true power of NURO®‘s intuitive software is in its simple step-by-step boiler set-up. Whether you are installing one boiler or more, the NURO®‘s makes it a snap. Whether installing a single boiler or cascading, with a simple touch, select from a variety of pre-configured settings for optimal system efficiency.

Configuring multiple boilers doesn’t get any easier than with NURO®. Since NURO® uses a computer with advanced software, just copy the settings to a USB stick, and transfer them to each boiler (two USB ports are available). This dramatically reduces set-up costs and time.


While most competitors have hardware driven controllers that are a costly hassle to upgrade and maintain, the NURO® provides the long-term ROI you’ve been waiting for. Our software driven computer allows for on-site upgrades to be easily made with minimal boiler knowledge. This reduces the amount of maintenance hours needed by expensive boiler technicians. Software upgrades provide long-term upgradability, which eliminates hardware replacement and costly service calls.


  • Fully modulating
  • Dual fuel – natural gas and liquid propane
  • Variable speed combustion blower
  • Dual modulating gas safety shut off / control valves
  • Aluminum alloy heat exchanger capable of operating in a fully condensing mode
  • Space-saving design
  • Complies with low NOx standards
  • Requires 120V electrical connection and less than 15 amps
  • Intelligent NURO® Control system


  • Offers two fuel options so the boiler can continue running, even in emergency situations
  • May be able to take advantage of discounts for continuous natural gas service
  • Small footprint to help conserve space in your facility
  • Reduced NOx emissions help to save the environment


For more information about this or any of our other products, please contact us or click here to find your authorized Harsco Industrial Patterson-Kelley representative.


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