The Problem
Abington Heights needed a rooftop air handler that could hit ASHRAE 90.1 energy recovery requirements and carry state-of-the-art controls — without putting maintenance staff on ladders every time a filter needed changing, and without paying custom-AHU money to get there.
The Solution
Specify the Daikin Rebel Applied Air Handling Unit, Model DAHA. A single-tier unit with a dedicated Energy Recovery Wheel segment, built to standard AHU casing strength, leakage, and insulation ratings — priced under what a two-tier unit costs to buy and install.
The Result
A single-tier unit that matches two-tier casing strength and ratings, at less than two-tier cost — plus six advantages most standard AHU manufacturers don’t offer.
Ladder-Free Design
A growing library of TriState HVAC success stories — more case studies are added as they’re completed.
Weight Savings
With a single supply air tunnel, DAHA units are up to 5,000 lbs lighter, reducing structural steel requirements on roofs.
One-Piece Shipping
Unlike two-tier units that ship in multiple pieces, DAHA units ship as a single unit, preventing future leak points.
Internal Pipe Portals
Hydronic piping connections are made inside the unit, avoiding external pipe chases and extra roof curbs.
Standard ECM Fan Arrays
Equipped with ECM fan arrays for resilience and simplicity, avoiding single points of failure.
Factory-Mounted Controls
Each unit includes pre-installed controls for fan speed and dampers, with options for additional components, ensuring readiness before shipping.
Bottom Line
Code-compliant energy recovery, zero maintenance requiring a ladder, and lower pricing than two-tier units.