Patterson Kelley 
PK HiDRA
Sizes: 800-1000 MBTU
Instantaneous Condensing Hot Water Heater. Up to 99% part load efficiencies with 5:1 turndown. Dedicated recirculating pump constantly mixes for consistent hot water output. Advanced NURO touch screen control system. 15-year warranty.
PK W MFD
Sizes: 750,000 – 2,000,000 BTU Input
Non-condensing, high-efficiency water heater with up to 85% efficiency, and a 5:1 turndown ratio. Simplified maintenance and easy inspection. 20 year guarantee against leakage.
PK Compact
Sizes: Custom
Options available for steam-to-water and water-to-water systems. Produces up to 250 GPM at 40F-140F. Double wall tube bundle construction available in copper or copper nickel.
Ludell 
Ludell Direct Contact Water Heater
Sizes: Custom
The Direct Contact Water Heater (DCWH) simplifies the heating process to one step. Unlike a typical boiler system, Ludell’s DCWH will produce 180 degree water up to 1,000 GPM instantly. That means on demand with no more waiting.
Heat & Power Products, Inc. represents the following quality manufacturers.
