Engineered Heating & Steam Solutions for Mechanical Professionals
High-efficiency boilers, valves, and clean steam systems — designed for performance, scalability, and reliability in the most demanding commercial and industrial environments.
Commercial Heating Solutions:
🔥 Condensing Boiler Systems
Engineered for high-efficiency heating in commercial and institutional facilities. From retrofits to new construction, our lineup features compact, scalable solutions with up to 97.5% thermal efficiency.
Hospitals
Schools
Commercial Buildings
Apartment Buildings
Patterson-Kelley
SOLIS
300–8000 MBH | Up to 97.5% Efficiency
- High-capacity condensing boiler
- Scalable design for large facilities
- Reduced fuel consumption
- Ideal for schools, hospitals, and commercial buildings
Patterson-Kelley
SONIC
300–8000 MBH | Up to 97.1% Efficiency
- Ultra-low NOx condensing system
- Compact footprint
- Stainless steel heat exchanger
- Great for high-spec, emission-conscious projects
Patterson-Kelley
MACH
300–8000 MBH | Up to 95.1% Efficiency
- Modular platform for easy expansion
- Flexible venting options
- Built-in redundancy with multiple burners
- Supports cascading in multi-boiler installations
Patterson-Kelley
STORM
300–8000 MBH | Up to 97% Efficiency
- High turndown ratio
- Quiet operation
- Fast startup and responsive controls
- Fits demanding retrofit or replacement scenarios
Designed by Experts. Delivered On Time.
Our in-house team works closely with your specs to ensure the system is code-compliant, properly sized, and ready for install. Riser diagrams, CAD files, and equipment schedules included.
Non-Condensing Boilers
Built for rugged performance in applications where condensing is not required. Perfect for high-temp or steam-driven systems.
Boiler REPLACEMENTS
SIMPLE HOT WATER LOOPS
HIGH DEMAND MECHANICAL ROOMS
Patterson-Kelley
MODU FIRE
750–2000 MBH | 85.8% Efficiency
- Durable design for high-demand hydronic systems
- Field-proven technology
- Excellent combustion control
- ASME-rated reliability
Patterson-Kelley
VELOX
750–3000 MBH | 85.8% Efficiency
- Optimized for consistent output
- Energy-saving heat transfer design
- Low maintenance components
- Great for industrial plants or large campuses
Low-Pressure & High-Pressure Steam Boilers
1.5HP–150HP | 80% Efficiency
- Packaged systems for ease of install
- Supports critical heating processes
- Built to handle demanding steam loads
- Ideal for healthcare, industrial, and government facilities
RTK Valves & Actuation
Precision flow control for liquid and steam systems. Engineered for throttling, mixing, or shut-off in demanding mechanical applications.
Features:
- Energy-efficient electronic actuators
- Class 4 shut-off valves (½” to 12″, up to 900#)
- Seamless BMS integration
- Built to handle high-pressure and temperature
Heat Exchangers & Clean Steam Systems (Maxi-Therm®)
Delivering steam-to-hydronics or clean steam for sterile or energy-optimized applications. Fully skidded and easy to install.
Clean steam for hospitals and pharma
DHW systems with minimal footprint
Skid-packaged for fast install
Available 1–400 PSI with integrated pumps
We Handle the Details.You Focus on the Job
Avoid rework and RFIs. Accardi provides commercial water heating and boiler systems that arrive fully coordinated with your site requirements and install sequence.
Aftermarket Services
Ensure longevity, compliance, and peak performance for your critical systems.
Services Include:
- Routine preventative maintenance
- Burner upgrades & system retrofits
- Local Law compliance checks
- On-call service techs with decades of expertise
Customers Testimonials
Ready to Build or Upgrade a Mechanical System?
Get expert help choosing the right boilers, valves, and heat systems for your next project.