2 Ton Rheem RHMVY2421MEACNJ Modulating Air Handler
The Rheem RHMVY2421MEACNJ takes Rheem's premium Endeavor Line modulating air handler and pairs a 2 ton capacity with a wider 21-inch cabinet and a larger medium coil. More coil face area supports enhanced airflow and dehumidification, driven by a truly variable-speed Constant CFM motor and a factory-installed EEV — an ideal EcoNet communicating indoor match for R-454B inverter comfort, with an included PlusOne A2L refrigerant sensor.
Is the RHMVY2421MEACNJ the Right Air Handler?
Like the compact 17.5-inch model, this unit serves 2 ton (24,000 BTU) R-454B systems and operates across roughly 500 to 800 CFM in cooling — but its wider 21-inch cabinet houses a larger medium coil. That extra coil surface can improve latent (moisture) removal and give the system more airflow headroom, which is valuable in humid climates or homes where dehumidification is a priority.
The trade-off is footprint: the 21-inch cabinet needs more installation width than the 17.5-inch version, though both share the same compact 42.5-inch height. Choosing between the two 2 ton models comes down to available space versus the benefits of the larger coil, so confirm the fit alongside a Manual J load calculation.
Ideal for: 2 ton R-454B systems where enhanced coil face, airflow, and dehumidification are preferred over the smallest possible cabinet.
Matched outdoor unit: Pair it with the 2 Ton Rheem RP19AY24AJVCA Inverter Heat Pump. Tight on space? Consider the compact 17.5-inch RHMVY2417SEACNJ.
Recommended applications are general guidelines only. Actual system requirements depend on the matched outdoor unit, insulation, duct design, and your local design temperatures. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Air Handler | RHMVY2421MEACNJ — 2 Ton Endeavor Line Modulating Air Handler |
|---|---|
| Nominal Capacity | 2.0 Tons / 24,000 BTU |
| Cabinet Size | 21 in. W × 42.5 in. H (wider cabinet, medium coil) |
| Blower Motor | 1/3 HP truly variable-speed Constant CFM ECM, modulating (300–1300 RPM) |
| Rated Airflow | ~500–800 CFM (cooling) with a matched 2 ton R-454B system |
| Indoor Coil | Factory-installed medium aluminum coil with Electronic Expansion Valve (EEV) |
| Line Connections | Liquid 3/8 in., Vapor 3/4 in. (copper sweat) |
| Refrigerant | R-454B (low-GWP A2L) |
| Refrigerant Detection | Factory-installed PlusOne A2L sensor with mitigation (included) |
| Controls | EcoNet Enabled communicating board with PlusOne Bluetooth diagnostics |
| Installation | 4-way convertible — upflow, downflow, horizontal left/right |
| Electrical | 208/240V, 1 Ph, 60 Hz — MCA 4, Max Breaker 15A (blower only); accepts field-installed heat kits |
| Shipping Weight | ~118 lbs. |
| Warranty | 10-Year Parts Limited Warranty (registration required) |
The larger medium coil provides additional face area compared with the compact 17.5-inch model, supporting strong airflow and moisture removal while retaining the same precise EEV metering, EcoNet communicating control, and included A2L refrigerant detection.
Airflow & Design Features
Airflow & Efficiency
- Larger medium coil for enhanced airflow and dehumidification
- Truly variable-speed Constant CFM modulating blower
- Electronic Expansion Valve for precise refrigerant metering
- Rated ~500–800 CFM for a 2 ton system
- Part of 18+ SEER2 R-454B inverter systems
- Less than 2% cabinet air leakage at 1-inch H2O
Controls, Safety & Serviceability
- EcoNet Enabled communicating control board
- PlusOne Bluetooth diagnostics and dip-switch-free commissioning
- Included PlusOne A2L refrigerant detection sensor
- Rugged 21-inch steel cabinet with room for the medium coil
- 4-way convertible with 1.0-inch foil-faced insulation
- Slide-out blower and molded corrosion-resistant drain pan
Specifications & Manuals
Product documentation includes technical specifications, installation instructions, a parts list, and warranty information to assist with equipment selection, installation, and service.
Frequently Asked Questions
How is the RHMVY2421MEACNJ different from the 17.5-inch 2 ton model?
Both are 2 ton modulating air handlers, but this model uses a wider 21-inch cabinet and a larger medium coil for more face area, airflow headroom, and dehumidification. The 17.5-inch RHMVY2417SEACNJ is the more compact option.
What is the benefit of the medium coil and 21-inch cabinet?
A larger coil face lowers air-side pressure drop and improves latent moisture removal, which helps comfort in humid conditions and gives the modulating blower more airflow capacity when needed.
What refrigerant does the RHMVY2421MEACNJ use?
It is designed for R-454B, a low-GWP A2L refrigerant with about 78% lower global warming potential than R-410A, used in Rheem's current inverter systems. It is not intended for older R-410A equipment.
What is an Electronic Expansion Valve (EEV) and why does it matter?
The EEV precisely controls refrigerant flow into the coil based on measured suction conditions, maintaining target superheat. Compared with a fixed metering device, it improves efficiency and supports full heat-pump operation in both heating and cooling.
Can I add electric heat to this air handler?
Yes. Field-installed RXBH auxiliary electric heater kits are available and include circuit breakers that meet UL and cUL requirements for service disconnect, providing supplemental or backup electric heat.
What is the blower-only electrical requirement for the RHMVY2421MEACNJ?
With the blower only (no electric heat), it operates on 208/240V, single-phase, 60 Hz with a minimum circuit ampacity of 4 amps and 15-amp maximum overcurrent protection. Adding an electric heat kit increases the circuit requirement per the installation instructions.
RHMV Technical Specifications
Rheem Warranty Certificate
