Rheem 12.5 Ton R-454B Commercial Packaged Air Conditioner — RACDYB150ADG000AAAA0
The Rheem RACDYB150ADG000AAAA0 is the 460V three-phase build of Rheem's 12.5-ton Commercial Renaissance Classic Series rooftop unit, the largest in the RACD line, delivering 142,000 BTU/h AHRI net cooling at 11.0 EER and 14.2 IEER on R-454B. Like the 208/230V version it uses two tandem scroll compressors for staged capacity, but its 460V wiring cuts each compressor's draw to about 8.8 A from 22.4 A, a real advantage when a 460V service feeds several large rooftops. It keeps the 5,000 CFM belt-drive VFD blower and convertible downflow or horizontal cabinet.
Is a 12.5-Ton Package Unit the Right Size?
As the largest single unit in the RACD line, this 12.5-ton rooftop is matched to loads approaching 142,000 to 148,000 BTU/h, often roughly 5,000 to 7,500 sq ft of commercial space. Its tandem compressors also give real staging on big zones, so it can run at part capacity for much of the season instead of cycling one large stage.
Even at 12.5 tons, load drivers such as dense occupancy, ventilation air, and process heat determine whether one unit is right or the zone needs multiple systems. The tandem compressors give staging tolerance for varying loads, but a real commercial load analysis is still what confirms the capacity. Correct sizing keeps staging useful and avoids the humidity problems that come with a grossly oversized single unit.
Ideal for: The largest zones in schools, arenas, warehouses, and industrial complexes fed from 460V three-phase power, where multiple large rooftops share one service.
Need more capacity? Need more than 12.5 tons? Move up to Rheem's larger commercial rooftops and pair them with a 15–25 ton roof curb, or browse the full packaged air conditioner category.
Recommended applications are general guidelines only. Actual capacity requirements depend on insulation, ventilation, occupancy, solar gain, ceiling height, and local design temperatures. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Model Number | RACDYB150ADG000AAAA0 |
|---|---|
| Product Type | Commercial Renaissance Classic Series Straight-Air (Cooling-Only) Packaged Air Conditioner |
| Nominal Capacity | 12.5 Tons — 148,000 BTU/h (142,000 BTU/h AHRI net cooling) |
| Rated Efficiency | 11.0 EER / 14.2 IEER |
| Refrigerant | R-454B (A2L, factory charged — approx. 168 oz) |
| Compressor | Two tandem scroll compressors (two stages of cooling) |
| Nominal Airflow | 5,000 CFM — belt-drive blower with standard VFD, convertible downflow or horizontal |
| Electrical | 460V, 3-Phase, 60 Hz |
| Minimum Circuit Ampacity | 31 A |
| Max Overcurrent Protection | 35 A |
| Manufacturer Warranty | 5-Year Compressor / 1-Year Parts (Commercial) |
The RACDYB150ADG000AAAA0 ships as one factory-assembled, wired, and run-tested cabinet, so there is no field refrigerant line set to braze — it arrives charged with R-454B and ready to set, connect power and ducting, and commission. For curbed rooftop installs, pair it with the matching 7.5–12.5 Ton Rheem 14 in. roof curb (RXKG-DDD14). Browse more Rheem equipment or the full packaged air conditioner lineup for related sizes and voltages.
Unit Features
Cooling, Compressor & Coils
- Two tandem scroll compressors (two stages of cooling) factory-charged with low-GWP R-454B refrigerant
- Two stages of cooling for part-load operation, quieter running, and improved humidity control
- MicroChannel outdoor condenser and MicroChannel indoor evaporator coils for efficient heat transfer
- TXV refrigerant metering with a solid-core liquid-line filter drier
- Rated 11.0 EER / 14.2 IEER at 148,000 BTU/h nominal (142,000 BTU/h AHRI net) cooling
- High- and low-pressure protection with built-in Smart Logic and internal compressor overload
- Cooling operation to 125°F ambient; two condenser fans on a propeller condenser section
- 18-gauge galvanized cabinet with forkable base rails and an industry-standard footprint and connections
Airflow, Controls & Serviceability
- Belt-drive forward-curved centrifugal blower delivering 5,000 nominal CFM
- Standard variable frequency drive (VFD) blower control with variable-pitch pulleys and a quick-adjust belt system
- Convertible airflow — vertical downflow or horizontal side-flow
- PlusOne ServiceSmart access: Qwik-Change Flex-Fit filter rack, Qwik-Slide blower assembly, and Qwik-Clean composite drain pan
- PlusOne Diagnostics with dual 7-segment LED display and overflow condensate sensor
- External lockable gauge ports; ships wired and run-tested with four disposable filters (MERV 8 / MERV 13 available)
- 460V, 3-Phase, 60 Hz power: 31 A minimum circuit ampacity, 35 A maximum overcurrent protection, two compressors at 8.8 A RLA each
- Field-installed accessories include economizers, hot-gas reheat/HumidiDry, roof curbs, hail guards, and smoke detectors
Specifications & Manuals
Product documentation includes RACD series technical specifications, installation instructions, and warranty information to assist with equipment selection, installation, and service. This unit carries a Rheem limited warranty; see the warranty document above for full coverage terms and conditions.
Frequently Asked Questions
What size space will the RACDYB150ADG000AAAA0 cool?
It is matched to commercial cooling loads near 148,000 BTU/h (142,000 BTU/h AHRI net), which often lands around roughly 5,000 to 7,500 sq ft of commercial space. Because occupancy, ventilation, glazing, and internal heat gain move the real load, size it with a commercial load calculation rather than floor area alone.
Why choose the 460V RACDYB150ADG000AAAA0 over the 208/230V model?
On 460V, 3-Phase, 60 Hz this unit draws far less current — a 31 A minimum circuit ampacity and 35 A maximum overcurrent protection (two compressors at 8.8 A RLA each) — versus the 208/230V build. That eases wiring and breaker sizing where a 460V service feeds several rooftops. If your panel is 208/230V, order the 208/230V three-phase 12.5-ton version instead.
Is this a two-stage unit, and does it have a VFD?
Yes. Every RACDYB unit provides two stages of cooling, and a variable frequency drive (VFD) on the belt-drive blower is standard. The tandem scroll compressors stage together to hold comfort and improve humidity control at part load.
Can this package unit be installed downflow and horizontal?
Yes. Airflow is field-convertible between vertical downflow (for curbed rooftop openings) and horizontal side-flow. A matching 14 in. Rheem roof curb (RXKG-DDD14) is available for 7.5–12.5 ton RACD units.
Does this unit include heat?
This is a cooling-only (straight-air) packaged air conditioner. Electric resistance heater kits are available as accessories on the RACD platform; if built-in heating is required, a gas/electric or heat-pump package unit is the better starting point.
How is the 12.5-ton different from the 7.5–10 ton RACD units?
Besides its higher 142,000 BTU/h AHRI net capacity and 5,000 CFM blower, the 12.5-ton is the only RACD size that uses two tandem scroll compressors rather than a single two-stage scroll. It is rated 11.0 EER / 14.2 IEER (slightly below the 11.2 / 14.8 of the smaller sizes) and ships with larger 2 x 20 x 25 in. filters.
RACDYB 7.5-12.5 Ton Straight Cool Package Installation ManualRACDYB 7.5-12.5 Ton Straight Cool Package Technical SpecificationsRheem Residential & Commercial Warranty 
