High-Efficiency Heating Solutions for Plumbing Professionals

Smarter systems for hot water, heating, and gas applications—engineered to simplify installations and deliver consistent performance in demanding commercial settings.

🔥 Condensing Water Heating Systems

ACT’s condensing water heating solutions provide exceptional efficiency and a space-saving design, meeting the domestic hot water and comfort heating needs of busy facilities.

Hospitals

Schools

Commercial Buildings

Apartment Buildings

Patterson-Kelley

MACH n’ ROLL

300–1050 MBH | Up to 95% Efficiency

  • Compact unit for both DHW and comfort heating
  • Perfect for retrofits and space-limited rooms
  • Wall-mount capability
  • Reliable, low NOx performance

Patterson-Kelley

HiDRA

800–1000 MBH | Up to 97% Efficiency

  • Built-in 128-gallon DHW storage tank
  • Ultra-efficient hybrid system with fast recovery
  • Plug-and-play setup for rapid installation
  • Optimized for energy savings

Patterson-Kelley

SOLIS

1000–3000 MBH | Up to 97% Efficiency

  • High-output condensing solution
  • Flexible design for modular mechanical rooms
  • Simple service access reduces maintenance
  • Smart control system for energy management

Patterson-Kelley

SONIC

650–1000 MBH | Up to 97% Efficiency

  • Quiet, efficient operation
  • Compact size for constrained spaces
  • Integrated diagnostics and controls
  • ASME-rated for commercial compliance

We Handle the Engineering. You Approve the Design.

From heat load calculations to fully detailed submittals, ACT provides system-ready packages that make approvals straightforward and installation seamless.

Non-Condensing Water Heaters

Engineered for longevity and simplicity, ACT’s non-condensing heaters are perfect for legacy facilities and high-demand upgrades requiring low-maintenance performance.

Boiler REPLACEMENTS

SIMPLE HOT WATER LOOPS

HIGH DEMAND MECHANICAL ROOMS

Patterson-Kelley

MODU FIRE

750–2000 MBH | Up to 88% Efficiency

  • Modular firing adapts to system load
  • Redundant burner arrays for reliability
  • Streamlined staging in multi-unit setups
  • Trusted for long-term durability

Patterson-Kelley

VELOX

750–2000 MBH | Up to 85% Efficiency

  • Efficient atmospheric design
  • Low electrical and control complexity
  • Great for budget-sensitive retrofits
  • Dependable for decades in high-use sites

💧 Water Heaters

Gas-Fired Commercial Systems

Accardi’s commercial water heaters offer reliable hot water for high-occupancy and high-consumption environments with consistent delivery and thermal stability.

Use Cases: 
Multifamily, hotels, dormitories, rec centers, dining and foodservice 

Benefits: 

  • Fast recovery rates with gas-fired dependability
  • Compatible with recirculation system designs
  • Low-maintenance operation for busy facilities
  • Durable construction for continuous uptime

️ ♨ Heat Exchangers

High-performance, compact solutions for indirect domestic water heating and system integration. Perfect for both water-to-water and steam-to-water applications.

Mechanical rooms

DHW storage loops

steam plant conversions

radiant systems

Patterson-Kelley

DURATION

Braze Plate, Water-to-Water | Up to 85 GPM

  • Space-saving, corrosion-resistant build
  • Optimized for DHW production
  • Ideal for apartments and modular installations

Patterson-Kelley

COMPACT

Steam-to-Water & Water-to-Water | Up to 420 GPM

  • Handles high-volume building demands
  • Skid-mount options for rapid deployment
  • Exceptional thermal transfer efficiency
  • Great for hospitals, schools, and labs

We Handle the Details.
You Focus on the Job

Avoid rework and RFIs. ACT provides commercial water heating and boiler systems that arrive fully coordinated with your site requirements and install sequence.

Gas Systems

ACT Integrated Components

ACT Integrated Gas Solutions ensure steady pressure, reliable operation, and safety for your mechanical plant.

Use Cases: 
New gas infrastructure, pressure drops, energy plant upgrades, LL-152 compliance

Systems Include: 

  • Gas Boosters – Maintain system pressure during high demand
  • Gas Regulators – Ensure stable, code-compliant flow
  • Gas Shut-Off Valves – Provide emergency safety control
  • Safety Monitoring – Deliver real-time alerts and integration

️Heat Trace & Freeze Protection

Thermon

Thermon® heat trace systems protect exposed piping and maintain consistent temperatures, ensuring reliable operation even in freezing conditions.

Use Cases:

  • Outdoor pipe freeze protection
  • Hot water temperature maintenance
  • Grease waste line heating to 110 °F
  • Roof and gutter ice melt
  • Snow melting for ramps and walkways

 

Benefits:

  • Prevent costly pipe damage and repairs
  • Maintain water temperature without full recirculation
  • Automated snow and ice control for entrances
  • Remote monitoring for proactive management

Aftermarket Services & Support

Protect your investment and keep your systems compliant with ACT’s full-service maintenance and support team.

Services Include: 

  • Preventative maintenance programs
  • Local law compliance (LL-97 / LL-152)
  • System retrofits and efficiency upgrades
  • Diagnostics and emergency response

Predictive Analytics

ACT’s advanced analytics tools allow facility teams to monitor heating and hot water systems in real time, spotting issues before they affect performance or compliance. By analyzing trends and anomalies, you can prevent costly downtime and extend equipment life.

Key Advantages:

  • Early detection of performance or mechanical issues
  • Data-driven insights for faster troubleshooting
  • Reduced unplanned downtime and service costs
  • Extended lifespan of critical mechanical equipment

Customers Testimonials

The Velox-Retrofit™ allowed us to upgrade our heating system without the need for extensive venting modifications. It saved us time and money.
Mark D.
Building Owner
Installation was smooth, and the performance boost is noticeable. A smart choice for retrofits.
Susan P.
Retrofit Contractor
Compliance was a major concern, but the Velox-Retrofit™ met all requirements effortlessly.
Kevin L.
Compliance Officer

Let’s Build the Right Plumbing System for Your Facility

Get a tailored solution, fast turnaround, and decades of commercial plumbing experience behind your project.