Located in East Stroudsburg, Pennsylvania, Harsco Industrial Patterson-Kelley is a recognized market leader and major producer of heat transfer equipment. Our hot water boilers and water heaters are installed in institutional, commercial, and industrial building applications such as schools, offices, apartment buildings, dormitories, hospitals, and hotels.
Harsco Industrial Patterson-Kelley serves the commercial heating industry with the best-known and most respected products in the field. Customers look to us for expert engineering support and in-depth understanding of their unique applications, and we meet the needs of their most challenging applications by applying our expertise and unmatched resources to every project.

P-K SONIC®
- Size Range: 650-4000 MBTU
- Unique stainless alloys resist corrosive condensation
- Patented DUET™ Technology Up to 60% smaller than the leading competition
- Reliable, easy to use NURO® Control maximizes boiler plant efficiency
- Certified low NOx performance
- Full modulation burner with at least 5:1 turndown
- Variable speed combustion air blower
- Fits through an existing 36” doorway
- Barely audible, even at high fire
- Actual net thermal efficiencies may be achieved up to 99%
- 4 digital inputs
- Lead/lag cascade control w/outdoor reset
- MODBUS RS-485 communication protocol
- Natural Gas, Liquid Propane, and Dual Fuel Options
- Stainless Steel Watertube Heat Exchanger

P-K MACH®
- Size Range: 300-4000 MBTU
- Equipped with the latest touch-screen technology, the NURO™ Touch-Screen Control
- All-purpose boiler suitable for condensing and non-condensing systems
- Revolutionary new, fully independent cast sectional heat exchanger
- Unique aluminum alloy resists corrosive condensate
- Full modulation burner with at least 5:1 turndown (10:1 Turndown on sizes, ”750-2000MBTU”)
- Extremely low electrical energy consumption increases potential savings
- Actual net thermal efficiencies may be achieved up to 99%
- Natural Gas, Liquid Propane, and Dual Fuel Options
- Optional build for outdoor boiler applications (750-2000 MBTU sizes only)

P-K STORM®
- Size Range: 650-6000 MBTU
- Natural Gas fired
- Up to 97% thermal efficiency
- 316L Stainless Steel Watertube Design
- Full Modulation burner with up to 10:1 turndown
- Cabinet and heat exchanger design reduces repair and maintenance costs
- Outdoor capable
- Variable speed combustion air blower
- NURO Touch-Screen Control
