MRCOOL VersaPro® 3.5 Ton Horizontal Packaged Heat Pump (R-454B) — MPH421HO13C
Overview
The MRCOOL® VersaPro® MPH421HO13C is a packaged heat pump engineered for demanding year-round heating and cooling in a compact horizontal configuration. It’s rated at 13.4 SEER2 and uses R-454B refrigerant to support lower-GWP installs. A power-painted galvanized steel cabinet helps resist weather and corrosion, while aluminum tubing/fin coils support efficient heat transfer and long-term durability. Built-in safeguards help protect against pressure extremes and coil temperature issues.
Highlights
- Efficient packaged performance: 13.4 SEER2 / 11.2 EER2.
- Matched capacity: 40,500 BTU cooling and 40,500 BTU heating.
- Airflow: 1430 CFM listed.
- Refrigerant: R-454B (lower GWP than older refrigerants).
- ECM condenser fan: ECM condenser fan motor listed at 1/3 HP.
- 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: MPH421HO13C
Performance & Electrical
| Capacity | 3.5 Ton |
| Cooling Capacity | 40,500 BTU |
| Heating Capacity | 40,500 BTU |
| Efficiency | 13.4 SEER2 • 11.2 EER2 • HSPF2-4: 6.7 |
| Airflow | 1430 CFM |
| Power | 208/230V • 1 Phase • 60 Hz |
| Max Fuse / Breaker | 40A |
| Minimum Circuit Ampacity | 29.9A |
| Refrigerant | R-454B • 95 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 • 1/3 HP |
| Blower Motor | PSC • 1/4 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.
FAQs
What efficiency ratings does this unit have?
13.4 SEER2, 11.2 EER2, and HSPF2-4 6.7.
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 40A max fuse/breaker and 29.9A 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 95 oz.
What are the unit’s capacities and airflow?
Cooling: 40,500 BTU. Heating: 40,500 BTU. Airflow listed at 1430 CFM.
