Rheem 4 Ton R-454B Packaged Heat Pump — RHPCYB048ACT000AAAA0
The Rheem RHPCYB048ACT000AAAA0 is a 4-ton Commercial Classic Series packaged heat pump that provides both R-454B air conditioning and reverse-cycle heat-pump heating from one self-contained rooftop or slab-mount cabinet. Wired for 208/230V 3-phase power, it delivers 45,500 BTU/h AHRI net cooling at 10.6 EER2 / 13.4 SEER2 and supplies approximately 47,000 BTU/h of heat-pump heating at 47°F, with capacity that tapers as outdoor temperatures fall. Built around a single-stage scroll compressor, all-microchannel coils, a reversing valve with demand defrost, factory refrigerant leak detection, and a direct-drive ECM blower with convertible downflow or horizontal airflow, it is a compact all-electric heating-and-cooling solution for small-commercial spaces on 208/230V 3-phase service.
Is a 4-Ton Heat Pump the Right Size?
This heat pump pairs 45,500 BTU/h of net cooling with reverse-cycle heating from the same refrigerant circuit, so it is sized primarily on the cooling load. For many light-commercial buildings 4 tons suits roughly 1,600 to 2,400 sq ft, though occupancy, ventilation, and heat gain move the real requirement. Its heating output at 47°F is approximately 47,000 BTU/h and declines in colder weather.
Because a heat pump's capacity drops as it gets colder, most commercial installations add a field-installed electric heater kit for supplemental heat below the balance point and for emergency heat during defrost. Size the cooling side from a commercial load calculation, then size the backup electric heat to cover the building's design heating load. Confirming the load (rather than using floor area alone) keeps the compressor off short cycles and protects comfort and humidity control.
Ideal for: Mid-size retail, restaurants, clinics, and professional office suites on 208/230V 3-phase power that want all-electric, no-gas heating and cooling — especially in mild-to-moderate climates or where building electrification is a goal.
Cooling only? If you don't need heat-pump heating, the 4-ton RACC 208/230V 3-phase straight-air package unit is the cooling-only equivalent. Need the other voltage? See the 4-ton 460V 3-phase heat pump.
Recommended applications are general guidelines only. Actual cooling and heating requirements depend on insulation, ventilation, occupancy, solar gain, climate, and design temperatures. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Model Number | RHPCYB048ACT000AAAA0 |
|---|---|
| Product Type | Commercial Classic Series Packaged Heat Pump (Cooling + Heating) |
| Nominal Cooling | 4 Tons — 45,500 BTU/h AHRI net cooling |
| Cooling Efficiency | 10.6 EER2 / 13.4 SEER2 |
| Heat-Pump Heating | approximately 47,000 BTU/h at 47°F (declines at lower outdoor temperatures) |
| Refrigerant | R-454B (A2L, factory charged — approx. 143 oz) |
| Compressor | Single-Stage Scroll Compressor with Reversing Valve |
| Defrost | Demand defrost |
| Nominal Airflow | 1,600 CFM — direct-drive ECM, convertible downflow or horizontal |
| Electrical | 208/230V, 3-Phase, 60 Hz |
| Minimum Circuit Ampacity | 25 A |
| Max Overcurrent Protection | 35 A |
| Manufacturer Warranty | 5-Year Compressor / 1-Year Parts (Commercial) |
The RHPCYB048ACT000AAAA0 ships as one factory-assembled, wired, and run-tested cabinet with R-454B charged — set it, connect power and ducting, and commission. Add a field-installed electric heater kit for supplemental and emergency backup heat. Need cooling only? See the matching 4-ton RACC straight-air unit, browse more Rheem equipment, or the full packaged unit lineup.
Unit Features
Cooling, Compressor & Coils
- Single-stage scroll compressor factory-charged with low-GWP R-454B refrigerant
- Reverse-cycle heat-pump operation delivers both cooling and heating from one system
- MicroChannel outdoor and indoor coils with TXV metering and a solid-core filter drier
- Factory-installed A2L refrigerant leak detection with automatic mitigation
- Rated 10.6 EER2 / 13.4 SEER2 at 45,500 BTU/h AHRI net cooling
- Demand-based defrost with high- and low-pressure protection and Smart Logic
- Cooling operation to 125°F ambient; convertible downflow or horizontal airflow
- 18-gauge galvanized cabinet with forkable base rails and gasket-protected panels
Heat-Pump Heating, Controls & Serviceability
- Heat-pump heating of approximately 47,000 BTU/h at 47°F, tapering as outdoor temperature drops
- Reversing valve with demand defrost for efficient cold-weather heating
- Field-installed electric heater kits available for supplemental and emergency backup heat
- Direct-drive constant-torque ECM indoor blower delivering 1,600 nominal CFM
- CoreCommand control with PlusOne diagnostics and dual 7-segment LED display
- Ships with four disposable 2 x 16 x 16 in. filters; MERV 8 and MERV 13 available
- 208/230V, 3-Phase, 60 Hz power: 25 A minimum circuit ampacity, 35 A maximum overcurrent protection
- Ships wired and run-tested; pre-wired for a field- or factory-installed economizer
Specifications & Manuals
Product documentation includes RHPC 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.
Frequently Asked Questions
What cooling and heating does the RHPCYB048ACT000AAAA0 provide?
It delivers 45,500 BTU/h AHRI net cooling (10.6 EER2 / 13.4 SEER2) and about 47,000 BTU/h of heat-pump heating at 47°F, with output that declines as it gets colder. Size it from a commercial load calculation and add electric backup heat for the coldest design conditions.
What power does the RHPCYB048ACT000AAAA0 require?
It is wired for 208/230V, 3-Phase, 60 Hz and needs a 25 A minimum circuit ampacity with a 35 A maximum overcurrent protection device. The other-voltage build is the 4-ton 460V 3-phase version (RHPCYB048ADT000AAAA0).
Does a heat pump need backup heat?
In most commercial applications, yes. A heat pump's output falls as the outdoor temperature drops, so a field-installed electric heater kit is typically added for supplemental heat below the balance point and for emergency heat during defrost. The right backup size depends on your climate and design heating load.
Is this a cooling-only unit or does it heat too?
It both heats and cools. A reversing valve lets the refrigerant cycle run in reverse to provide heating as well as cooling, all-electric, with no gas. If you only need cooling, the 4-ton RACC 208/230V 3-phase straight-air package unit is the cooling-only equivalent.
Can this unit be installed downflow and horizontal?
Yes. Airflow is field-convertible between vertical downflow (for curbed rooftop openings) and horizontal side-flow, so the same unit works on a curb or a slab with side duct connections.
Is it charged with R-454B and does it have leak detection?
Yes. It is factory-charged with low-GWP R-454B (an A2L refrigerant, approximately 143 oz) and includes a factory-installed refrigerant leak detection system that triggers a fault and mitigation sequence if a leak is sensed.
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