4 Ton Rheem 19 SEER2 R-454B Modulating Inverter Heat Pump System
This complete 4 ton Rheem system pairs the RP19AY48AJVCA inverter heat pump condenser with the RHMVY4821SEACAJ modulating air handler for a factory-matched, EcoNet communicating system rated at 19 SEER2. Built on low-GWP R-454B refrigerant, it brings coordinated variable-speed heating and cooling to larger homes, running long, efficient cycles that keep temperature and humidity even across a bigger footprint.
Is a 4 Ton Heat Pump System the Right Size?
A 4 ton (48,000 BTU) system is built for larger homes, often in the range of roughly 2,000 to 2,600 square feet. Because both the compressor and blower modulate from low to full output, this system avoids the blast-and-shutoff behavior of single-stage equipment and instead settles into steady runs that improve comfort and dehumidification across a large area.
A larger home magnifies the cost of getting sizing wrong. Duct capacity, two-story stack effect, window load, insulation, and local design conditions all shape the requirement, so a Manual J calculation and a duct review should confirm capacity before selecting a 4 ton system over a 3 or 5 ton.
Ideal for: larger single-family homes and open-concept layouts with elevated heating and cooling demand.
Need more capacity? Step up to the 5 Ton Rheem 17.5 SEER2 Inverter Heat Pump System. For a smaller load, compare the 3 Ton 20 SEER2 System.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, ambient conditions, duct design, window load, and your local design temperatures. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | RP19AY48AJVCA — 4 Ton Inverter Heat Pump Condenser |
|---|---|
| Indoor Air Handler | RHMVY4821SEACAJ — 4 Ton Modulating EcoNet Air Handler |
| System Efficiency | 19 SEER2 / 12.0 EER2 / 8.5 HSPF2 (AHRI Ref. 215576396) |
| Nominal Capacity | 4.0 Tons / 45,500 BTU |
| Refrigerant | R-454B (low-GWP A2L), factory-charged condenser |
| Outdoor Compressor | Inverter-driven variable-speed scroll (40–100%, 115% overdrive) |
| Indoor Blower | 3/4 HP truly variable-speed Constant CFM modulating ECM |
| Controls | EcoNet Enabled communicating system with PlusOne Bluetooth diagnostics |
| Backup Heat | Accepts field-installed RXBH electric heat kits (UL/cUL disconnect) |
| Electrical | 208/230V, 1 Ph, 60 Hz (condenser MCA 24 / Max Breaker 40A; air handler on a separate circuit) |
| Warranty | 10-Year Parts & 10-Year Conditional Unit Replacement (registration required) |
This AHRI-certified matched system pairs a factory-charged 4 ton inverter condenser with a modulating air handler that accepts field-installed electric heat kits for supplemental or backup heating.
System Components & Features
RP19AY48AJVCA Outdoor Heat Pump
- Top-tier Endeavor Prestige efficiency, 19 SEER2 in this match
- Inverter variable-speed scroll compressor sized for large homes
- 45,500 BTU capacity with 115% overdrive capability
- Low-GWP R-454B, ~78% lower GWP than R-410A
- Swept Wing fan and sound blanket, as low as 59 dBA
- PlusOne refrigerant detection and Bluetooth diagnostics
RHMVY4821SEACAJ Indoor Air Handler
- Truly variable-speed Constant CFM modulating blower
- Factory-installed aluminum coil with Electronic Expansion Valve
- Rated ~1,000–1,600 CFM cooling airflow
- EcoNet Enabled with dip-switch-free Bluetooth commissioning
- Included PlusOne A2L refrigerant detection sensor
- Accepts field-installed RXBH electric heat kits
Specifications & Manuals
Product documentation includes condenser and air handler technical specifications, installation information, product literature, and warranty details to assist with equipment selection, installation, and service.
Frequently Asked Questions
What does the 4 ton RP19AY48AJVCA and RHMVY4821SEACAJ system include?
It includes the RP19AY48AJVCA 4 ton inverter heat pump condenser and the RHMVY4821SEACAJ 4 ton modulating air handler, certified together under AHRI Reference Number 215576396.
Why is the 4 ton system rated 19 SEER2 instead of 20?
Rated efficiency depends on the specific condenser and coil combination. The 4 ton match is AHRI-certified at 19 SEER2, while the 2 and 3 ton pairings reach 20 SEER2. All share the same Endeavor Prestige design and 8.5 HSPF2 heating.
Can this system include backup electric heat?
Yes. The RHMVY4821SEACAJ air handler accepts a range of field-installed RXBH electric heater kits, which include circuit breakers meeting UL and cUL requirements, to provide supplemental or backup heat.
What electrical service does the 4 ton system require?
The outdoor condenser operates on 208/230V single-phase power with a minimum circuit ampacity of 24 amps and 40-amp maximum breaker. The air handler is powered on a separate circuit, sized larger if an electric heat kit is added.
What size home is a 4 ton system for?
A 4 ton system delivers 48,000 BTU and typically suits larger homes around 2,000 to 2,600 square feet. A Manual J load calculation and duct review confirm the right capacity for your home.
What line set sizes does this 4 ton system use?
The RP19AY48AJVCA condenser and RHMVY4821SEACAJ air handler both use a 3/8-inch liquid line and a 7/8-inch vapor line. Follow the installation instructions for line length limits and any additional refrigerant charge.
RP19AY Technical SpecificationsRP19AY Installation InstructionsRP19AY BrochureRHMV Technical Specifications
Rheem Warranty Certificate
