In today’s mechanical rooms, space is often at a premium. Whether it’s a retrofit project, a tight utility room, or a renovation with limited clearance, system designers are being asked to do more with less. That’s where the P-K Compact, an indirect-fired water heater comes in.
Designed to deliver reliable hot water performance while minimizing floor space, the P-K Compact combines efficient heat transfer, flexible installation options, and durable construction—all in a compact form factor, built for real-world applications.
Designed for Tight Spaces
One of the standout features of the P-K Compact is its small footprint and vertical design, making it ideal for installations where space constraints would otherwise limit system options. The unit is engineered to fit through standard doorways and into confined mechanical rooms without sacrificing performance.
This makes the P-K Compact a strong solution for:
- New build and retrofit projects for district energy, campus, steam/hot water building loops
- Multi-family and commercial buildings
- Mechanical rooms with limited clearance
Smart Form Factor, Flexible Setup
Beyond size, the P-K Compact is designed with installer flexibility in mind. Multiple piping and connection options allow the unit to adapt to a variety of system layouts, helping simplify installation and reduce labor time.
Our applications team frequently works with contractors and engineers to implement special configurations that align with jobsite constraints while maintaining proper flow, heat transfer, and system efficiency.
Built for Durability
The P-K Compact features a robust cast iron and USA-made steel bonnet options, in high-quality heat exchanger materials, designed to withstand demanding operating conditions over the life of the system. These materials help support efficient heat transfer, corrosion resistance, and long-term reliability—key factors in maintaining consistent performance.
Best Practices Backed by Experience
Proper sizing, piping, and setup are critical to getting the most out of any indirect-fired water heater. That’s why Patterson-Kelley emphasizes best practices developed through decades of field experience. From correct piping layouts to proper system integration, our teams support engineers and contractors every step of the way.
A Compact Solution with Full Support
Like all Patterson-Kelley products, the P-K Compact is designed and assembled in the United States and backed by a knowledgeable applications and service team. It’s a space-saving solution that doesn’t cut corners—offering dependable performance, flexible design, and expert support from concept to commissioning.
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