MRCOOL — Signature Series (Stud Mount Air Handler + Heat Pump Condenser)
MRCOOL® Signature Series 24K Heat Pump System (Stud Mount) — MCAEAWPEF24D21AA + MCAESHS4T2421AA
Overview
24K Class2 TonHeat PumpStud Mount Air HandlerBetween-Stud InstallECM Blower14.3 SEER211.7 EER27.5 HSPF2R-454BAHRI Certified10-Year Parts Warranty
This system combines theMRCOOL® Signature Series 24K stud mount air handlerwith theSignature Series 2-ton heat pump condenserfor all-season heating and cooling. The stud mount air handler is designed tofit between standard wall studsand supportsfront or bottom returnoptions for flexible installs.
Highlights
- Space-saving stud mount:Designed for between-stud installation where a conventional air handler won’t fit.
- Return air flexibility:Air handler supportsfrontorbottomreturn configurations.
- Efficient airflow:High-efficiencyECM blower motorfor steady airflow and reduced energy use.
- All-season comfort:Heat pump condenser providesheating + cooling, with5°Fminimum ambient heating operation.
- Service-friendly:Outdoor unit lists sweat connection valves and an accessible gauge port for easier installation and maintenance.
System Size
2 Ton (24K Class)
2 Ton (24K Class)
Efficiency
14.3 SEER2 • 7.5 HSPF2
14.3 SEER2 • 7.5 HSPF2
Line Sizes
3/8" Liquid • 3/4" Suction
3/8" Liquid • 3/4" Suction
Min Ambient
5°F Heat • 59°F Cool
5°F Heat • 59°F Cool
Performance varies by climate and installation. Manual J sizing is recommended.
What’s Included
- Stud Mount Air Handler:MCAEAWPEF24D21AA
- Heat Pump Condenser:MCAESHS4T2421AA
- Documentation (see Documents & Downloads)
Indoor Specs
Model:MCAEAWPEF24D21AA (Signature Series Stud Mount Air Handler)
| Unit Type | Air Handler |
| Configuration / Mount | Stud Mount |
| Airflow Direction | Upflow |
| Tonnage | 2 Ton |
| Airflow (CFM) | 797 |
| Sound | 54 dB(A) |
| Refrigerant | R-454B |
| Metering Device | Orifice |
| Drain Connection Size | 3/4" |
| Line Sizes | Liquid 3/8" • Suction 3/4" |
| Blower Motor Type | ECM |
| Blower Motor | 1/3 HP • 5 Speeds • 1010 RPM |
| Filter | Replaceable • 15" × 19" × 1" |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Min Circuit Ampacity (MCA) | 2.5A |
| Max Fuse / Breaker | 3A |
| 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) | 20.5" × 15" × 36" |
| Net Weight | 88 lb |
| GTIN / UPC | GTIN 00840255595926 • UPC 840255595926 |
| Proposition 65 | Yes |
Designed to work withSignature Series top discharge condensers.
Outdoor Specs
Model:MCAESHS4T2421AA (Signature Series Split System Heat Pump Condenser)
| Unit Type | Split System Heat Pump Condenser |
| Tonnage | 2 Ton |
| Cooling / Heating Capacity | 22,000 BTU / 22,000 BTU |
| Efficiency | 14.3 SEER2 • 11.7 EER2 • 7.5 HSPF2 |
| Airflow (CFM) | 1950 |
| Sound | 60 dB(A) |
| Inverter | No |
| Min Ambient (Cooling) | 59°F |
| Min Ambient (Heating) | 5°F |
| Refrigerant | R-454B • 91.7 oz |
| Max Line Set Length | 100 ft |
| Line Sizes | Liquid 3/8" • Suction 3/4" |
| Compressor | Scroll |
| Condenser Fan Motor | PSC • 1/9 HP |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Min Circuit Ampacity (MCA) | 15.2A |
| Max Fuse / Breaker | 20A |
| Certifications | UL Listed • CSA Listed • ETL Listed • AHRI Certified |
| Color | Grey |
| Dimensions (W×D×H) | 23.6" × 23.6" × 25" |
| Net Weight | 144 lb |
| GTIN / UPC | GTIN 00840255595780 • UPC 840255595780 |
| Proposition 65 | Yes |
Designed to work withSignature Series multi-positionorstud mountair handlers.
Documents & Downloads
- Signature Series Stud Mount Air Handler (MCAEAWPEF24D21AA)
- Brochure (EN)
- Installation & User Manual (EN)
- Warranty (EN)
- Signature Series Heat Pump Condenser (MCAESHS4T2421AA)
- Brochure (EN)
- Installation & User Manual (EN)
- Warranty (EN)
- AHRI Certificate (PDF)
- EnergyGuide (PDF)
Important
- Stud mount configuration:Designed to fit between studs; supportsfrontandbottomreturn air (verify clearances in the install manual).
- Line sizes:Both components list3/8" liquidand3/4" suction.
- Line set length:Outdoor unit lists up to100 ftmaximum line set length; verify long-line requirements in the install manual.
- Minimum outdoor temps:Outdoor unit lists59°Fminimum ambient for cooling and5°Fminimum ambient for heating.
- 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,10 kW) for added cold-weather comfort (sold separately).
FAQs
What is a stud mount air handler?
A stud mount air handler is designed tofit between standard wall studs, helping solve installs where a traditional cabinet won’t fit in a closet/utility space.
Does this system provide heating and cooling?
Yes. The outdoor unit is aheat pump condenser, so the system is listed forheating and cooling.
What refrigerant does it use?
Both components listR-454B.
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.
