MRCOOL — Signature Series Split System (Multi-Position Air Handler + Heat Pump Condenser)
MRCOOL® Signature Series 48K (4 Ton) Heat Pump System — MCAEAMPEF48E21AA + MCAESHS4T4821AA
Overview
48K Class4 TonHeat Pump14.3 SEER211.2 EER27.5 HSPF2R-454BMulti-Position Air HandlerUpflow / Downflow / HorizontalECM BlowerAHRI Certified10-Year Parts Warranty
TheMRCOOL® Signature Series 48Kheat pump system pairs a4-ton multi-position air handlerwith asplit-system heat pump condenserfor year-round heating and cooling. The indoor unit supportsupflow, downflow, and horizontalinstalls, and both components useR-454B refrigerant.
Highlights
- All-season comfort:Heat pump condenser listed forheating + cooling.
- Efficiency ratings:Outdoor unit listed at14.3 SEER2,11.2 EER2, and7.5 HSPF2.
- Flexible installation:Air handler supportsupflow, downflow, and horizontalconfigurations.
- Service-friendly pairing:Outdoor unit lists150 ftmaximum line set length for flexible placement.
- Cold-weather note:Outdoor unit lists5°Fminimum ambient heating operation.
System Size
4 Ton (48K Class)
4 Ton (48K Class)
Efficiency
14.3 SEER2 • 7.5 HSPF2
14.3 SEER2 • 7.5 HSPF2
Line Sizes
3/8" Liquid • 7/8" Suction
3/8" Liquid • 7/8" Suction
Max Line Set
Up to 150 ft
Up to 150 ft
Performance varies by climate and installation. Manual J sizing is recommended.
What’s Included
- Multi-Position Air Handler:MCAEAMPEF48E21AA
- Heat Pump Condenser:MCAESHS4T4821AA
- Documentation (see Documents & Downloads)
Indoor Specs
Model:MCAEAMPEF48E21AA (Signature Series Multi-Position Air Handler)
| Unit Type | Air Handler |
| Configuration / Mount | Multi-Position (Upflow / Downflow / Horizontal) |
| Tonnage | 4 Ton |
| Airflow (CFM) | 1549 |
| Sound | 57 dB(A) |
| Refrigerant | R-454B |
| Metering Device | Orifice |
| Drain Connection Size | 3/4" |
| Line Sizes | Liquid 3/8" • Suction 7/8" |
| Blower Motor Type | ECM |
| Blower Motor | 3/4 HP • 5 Speeds • 1010 RPM |
| Filter | Replaceable • 20" × 24" × 1" |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Min Circuit Ampacity (MCA) | 7.2A |
| Max Fuse / Breaker | 10A |
| Aux Heat | Not included • Optional heat kit available (5 kW, 7.5 kW, 10 kW) |
| Certifications | UL Listed • CSA Listed • ETL Listed • AHRI Certified |
| Color | Grey |
| Dimensions (W×D×H) | 22" × 24.5" × 53.125" |
| Net Weight | 163 lb |
| GTIN / UPC | GTIN 00840255595896 • UPC 840255595896 |
| Proposition 65 | Yes |
Designed to work withSignature Series top discharge condensers.
Outdoor Specs
Model:MCAESHS4T4821AA (Signature Series Split System Heat Pump Condenser)
| Unit Type | Split System Heat Pump Condenser |
| Tonnage | 4 Ton |
| Cooling / Heating Capacity | 45,000 BTU / 45,000 BTU |
| Efficiency | 14.3 SEER2 • 11.2 EER2 • 7.5 HSPF2 |
| Airflow (CFM) | 4000 |
| Sound | 65 dB(A) |
| Inverter | No |
| Min Ambient (Cooling) | 59°F |
| Min Ambient (Heating) | 5°F |
| Refrigerant | R-454B • 144.6 oz |
| Max Line Set Length | 150 ft |
| Line Sizes | Liquid 3/8" • Suction 3/4" |
| Compressor | Scroll |
| Condenser Fan Motor | PSC • 1/3 HP |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Min Circuit Ampacity (MCA) | 30A |
| Max Fuse / Breaker | 50A |
| Certifications | UL Listed • CSA Listed • ETL Listed • AHRI Certified |
| Color | Grey |
| Dimensions (W×D×H) | 29.14" × 29.14" × 32.875" |
| Net Weight | 223 lb |
| GTIN / UPC | GTIN 00840255595827 • UPC 840255595827 |
| Proposition 65 | Yes |
Designed to work withSignature Series Multi-PositionorStud Mountair handlers.
Documents & Downloads
- Signature Series Multi-Position Air Handler (MCAEAMPEF48E21AA)
- Brochure (EN)
- Installation & User Manual (EN)
- Warranty (EN)
- Signature Series Heat Pump Condenser (MCAESHS4T4821AA)
- Brochure (EN)
- Installation & User Manual (EN)
- Warranty (EN)
- AHRI Certificate (PDF)
- EnergyGuide (PDF)
Important
- Heat pump operation:This pairing includes aheat pump condenserforheating + cooling.
- Minimum outdoor temps:Outdoor unit lists59°Fminimum ambient for cooling and5°Fminimum ambient for heating.
- Line sizes:Air handler lists3/8" liquidand7/8" suction. Outdoor unit lists3/8" liquidand3/4" suction.Verify the correct suction line size for the matched pairing in the installation manualbefore ordering line sets.
- Line set length:Outdoor unit lists up to150 ftmaximum line set length; verify long-line requirements in the install manual.
- Electrical:Both components are208/230V, 1-phase, 60 Hz. Verify breaker/fuse sizing per install manual and local code.
- Aux heat option:Air handler supports optional heat kits (listed as5 kW,7.5 kW, and10 kW) for added cold-weather comfort (sold separately).
FAQs
Does this system provide heating and cooling?
Yes. The outdoor unit is aheat pump condenser, so the system is listed forboth heating and cooling.
What installation positions does the air handler support?
The air handler ismulti-positionand supportsupflow, downflow, and horizontalconfigurations.
What refrigerant does it use?
Both components listR-454B.
What line sizes should I use?
Liquid line is listed as3/8". Suction line sizing shows a mismatch between the indoor (7/8") and outdoor (3/4") fields provided, soconfirm the correct suction line size for the matched pairingin the installation manual before selecting a line set.
How cold can it run in heating?
The outdoor unit lists a minimum ambient heating temperature of5°F.
What warranty coverage is included?
Warranty is listed as10-year limited parts, withlimited compressorcoverage referenced for the outdoor unit.
