High-Performance Commercial Heating for Plumbing Professionals
Engineered solutions for domestic hot water, hydronic heating, and gas infrastructure—designed to simplify installations and exceed the most stringent building codes.
🔥 Condensing Water Heating Systems
LLA’s condensing water heating solutions deliver exceptional efficiency and compact performance for both domestic hot water and comfort heating in commercial and institutional facilities.
Hospitals
Schools
Commercial Buildings
Apartment Buildings
Patterson-Kelley
MACH n’ ROLL
300–1050 MBH | Up to 95% Efficiency
- Compact solution for DHW and space heating
- Perfect for tight spaces or retrofit projects
- Wall-mount capable
- Built-in reliability with low NOx emissions
Patterson-Kelley
HiDRA
800–1000 MBH | Up to 97% Efficiency
- Integrated 128-gallon DHW storage
- Ultra-efficient hybrid system with high recovery rates
- Plug-and-play setup for fast installation
- Significant energy savings
Patterson-Kelley
SOLIS
1000–3000 MBH | Up to 97% Efficiency
- High-output condensing boiler
- Easily scalable for multi-unit plant rooms
- Low-maintenance design with simple service access
- Smart controls for energy optimization
Patterson-Kelley
SONIC
650–1000 MBH | Up to 97% Efficiency
- Ultra-quiet operation
- Compact footprint for space-limited mechanical rooms
- Integrated diagnostics and advanced controls
- ASME-rated for commercial compliance
We Engineer It. You Approve It.
From heat load calculations to complete system design, we handle the heavy lifting—so your team can move faster. Accardi delivers submittal-ready packages that engineers can sign off on with confidence.
Non-Condensing Water Heaters
Boiler REPLACEMENTS
SIMPLE HOT WATER LOOPS
HIGH DEMAND MECHANICAL ROOMS
Patterson-Kelley
MODU FIRE
750–2000 MBH | Up to 88% Efficiency
- Modular firing for precise load tracking
- Redundant burner arrays for reliability
- Simplifies multi-unit staging
- Proven in commercial applications for 20+ years
Patterson-Kelley
VELOX
750–2000 MBH | Up to 85% Efficiency
- Efficient atmospheric system
- Minimal electrical and control complexity
- Great for cost-conscious retrofits
- Dependable, long-life performance
💧 Water Heaters
Gas-Fired Commercial Systems
LLA’s gas-fired water heating systems supply reliable hot water for high-occupancy environments like hotels, dormitories, and multi-family residences.
Use Cases:
Multifamily, hotels, dormitories, rec centers, dining and foodservice
Benefits:
- Gas-fired durability with rapid recovery rates
- Seamless integration with recirculation systems
- Low maintenance requirements
- Reliable long-term performance for high-usage sites
️ ♨ Heat Exchangers
Our compact, high-efficiency heat exchangers are ideal for indirect domestic water production and process integration, including steam-to-water and water-to-water setups.
Mechanical rooms
DHW storage loops
steam plant conversions
radiant systems
Patterson-Kelley
DURATION
Braze Plate, Water-to-Water | Up to 85 GPM
- Space-saving design
- Corrosion-resistant construction
- Efficient DHW production
- Excellent for apartments and modular buildings
Patterson-Kelley
COMPACT
Steam-to-Water & Water-to-Water | Up to 420 GPM
- Built for high-volume buildings
- Excellent energy transfer efficiency
- Ideal for schools, hospitals, and labs
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.
Gas Systems
Integrated Components
LLA provides integrated gas solutions to ensure stable pressure, safety, and uninterrupted fuel supply for commercial and industrial facilities.
Use Cases:
New gas infrastructure, pressure drops, energy plant upgrades, LL-152 compliance
Systems Include:
- Gas Boosters – Maintain pressure during peak demand
- Gas Regulators – Stabilize downstream pressure
- Gas Shut-off Valves – Fail-safe emergency control
- Safety Monitoring – Real-time alerts and BMS integration
️Heat Trace & Freeze Protection
Thermon
Protect critical piping and maintain water temperature in all conditions with LLA’s heat trace systems.
Use Cases:
- Freeze protection for outdoor pipes
- Hot water temperature maintenance
- Grease waste line temperature maintenance
- Roof & gutter ice melt
- Snow melting for driveways, ramps, and walkways
Benefits:
- Prevents freeze damage and costly repairs
- Maintains water temps without full recirculation
- Automated snow and ice melt for safer access
- Remote monitoring for preventative action
Aftermarket Services & Support
Maintain peak performance, extend equipment life, and ensure code compliance with LLA’s full-service support.
Services Include:
- Routine preventative maintenance
- Local law compliance (LL-97 / LL-152)
- System retrofits and efficiency upgrades
- Emergency repair and diagnostic testing
Predictive Analytics
LLA equips your building with real-time system monitoring and predictive insights to prevent failures before they happen.
Key Advantages:
- Early detection of performance issues
- Data-backed troubleshooting for faster response
- Reduced unplanned downtime and service costs
- Longer equipment lifespan through proactive care
Customers Testimonials
Build the Right Plumbing System with LLA
Get expert guidance, fast quotes, and proven solutions for your next commercial plumbing project.