MRCOOL VersaPro® 4 Ton Horizontal Packaged Heat Pump (R-454B) — MPH481HO13C
Overview
The MRCOOL® VersaPro® MPH481HO13C delivers high-capacity heating and cooling in a compact horizontal packaged unit. Built around a durable, power-painted galvanized steel cabinet and corrosion-resistant aluminum tubing/fin coils, it’s designed for long service life with steady comfort and quiet operation. It uses R-454B refrigerant and includes safeguards to help protect the system from abnormal pressure and coil temperature conditions.
Highlights
- Efficiency: 13.4 SEER2 / 11.4 EER2.
- Capacity: 46,500 BTU cooling and 46,000 BTU heating.
- Airflow: 1620 CFM listed.
- Refrigerant: R-454B (lower GWP than older refrigerants).
- Components: Scroll compressor, ECM condenser fan motor, PSC blower motor.
- Aux heat ready: optional heat strips available (5 / 7.5 / 10 / 15 / 20 kW).
- Controls: standard 24V thermostat.
What’s Included
- Packaged heat pump unit: MPH481HO13C
Performance & Electrical
| Capacity | 4 Ton |
| Cooling Capacity | 46,500 BTU |
| Heating Capacity | 46,000 BTU |
| Efficiency | 13.4 SEER2 • 11.4 EER2 • HSPF2-4: 6.7 |
| Airflow | 1620 CFM |
| Power | 208/230V • 1 Phase • 60 Hz |
| Max Fuse / Breaker | 45A |
| Minimum Circuit Ampacity | 36A |
| Refrigerant | R-454B • 97 oz |
| Sound Level | 80 dBA |
| Min Ambient Cooling | 32°F |
| Min Ambient Heating | -0.4°F |
Connections & Components
| Control Type | 24V Thermostat |
| Drain Connection | 3/4" |
| Compressor | Scroll (non-inverter) |
| Condenser Fan | ECM • 1/4 HP |
| Blower Motor | PSC • 1/2 HP • 3 Speeds |
| Metering Device | Piston |
| Auxiliary Heat | Not included • Optional: 5 / 7.5 / 10 / 15 / 20 kW |
Dimensions & Weight
| Net | 42.06" W × 58.5" D × 33.06" H • 454 lb |
| Gross | 42.24" W × 59.25" D × 34.07" H • 472 lb |
Documents & Downloads
Important
- Aux heat: Optional heat strip kits are available (5 / 7.5 / 10 / 15 / 20 kW); not included.
- Warranty: Base coverage listed as 5-year parts / 5-year compressor. Registered coverage listed as 10-year parts / 10-year compressor.
- Electrical: Confirm breaker sizing, wire gauge, and disconnect requirements per local code and the install manual.
- Prop 65: This product includes a Proposition 65 warning.
FAQs
What efficiency ratings does this unit have?
13.4 SEER2, 11.4 EER2, and HSPF2-4 6.7.
What size area is a 4 ton packaged heat pump typically used for?
Sizing depends on insulation, windows, ceiling height, climate, and duct design. A 4-ton system is commonly selected for larger homes/spaces, but the right choice comes from a load calculation (Manual J) and duct evaluation.
Does it support auxiliary electric heat strips?
Yes. Auxiliary heat is available in 5 / 7.5 / 10 / 15 / 20 kW sizes (not included).
What are the electrical requirements?
Listed as 208/230V, 1-phase, with 45A max fuse/breaker and 36A MCA. Always verify requirements in the installation manual and local electrical code.
What is the refrigerant and charge amount?
Refrigerant is R-454B, with a factory charge listed at 97 oz.
What are the unit’s capacities and airflow?
Cooling: 46,500 BTU. Heating: 46,000 BTU. Airflow listed at 1620 CFM.
