MRCOOL — Signature Series (Stud Mount Air Handler + Heat Pump Condenser)
MRCOOL® Signature Series 36K Heat Pump System (Stud Mount) — MCAEAWPEF36E21AA + MCAESHS4T3621AA
Overview
36K Class3 TonHeat PumpStud Mount Air HandlerFront/Bottom ReturnECM Blower14.3 SEER211.7 EER27.5 HSPF2R-454BAHRI Certified10-Year Parts Warranty
This system combines theMRCOOL® Signature Series 36K stud mount air handlerwith a3-ton Signature Series heat pump condenserfor efficient heating and cooling year-round. The stud mount cabinet is designed tofit between standard wall studsand supportsfrontorbottom returnconfigurations for flexible installs.
Highlights
- Between-stud installation:Space-saving stud mount design for tight or unconventional installs.
- Flexible return air:Front or bottom return options to match your duct layout.
- Efficient airflow:ECM blower motor with multi-speed control for steady comfort.
- Cold-weather operation:Outdoor unit lists5°Fminimum ambient heating plus intelligent defrost.
- R-454B refrigerant:Modern, low-GWP refrigerant platform for updated compliance.
System Size
3 Ton (36K Class)
3 Ton (36K 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
Max Line Set
Up to 150 ft
Up to 150 ft
Sizing and performance depend on home load and installation details.
What’s Included
- Stud Mount Air Handler:MCAEAWPEF36E21AA
- Heat Pump Condenser:MCAESHS4T3621AA
- Documentation (see Documents & Downloads)
Indoor Specs
Model:MCAEAWPEF36E21AA (Signature Series Stud Mount Air Handler)
| Unit Type | Air Handler |
| Configuration / Mount | Stud Mount |
| Airflow Direction | Upflow |
| Tonnage | 3 Ton |
| Airflow (CFM) | 1095 |
| Sound | 57 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 | 1/2 HP • 5 Speeds • 1000 RPM |
| Filter | Replaceable • 20" × 20" × 1" |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Min Circuit Ampacity (MCA) | 4.5A |
| Max Fuse / Breaker | 6A |
| 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) | 22.125" × 19" × 39.5" |
| Net Weight | 110 lb |
| GTIN / UPC | GTIN 00840255595940 • UPC 840255595940 |
| Proposition 65 | Yes |
Designed to work withSignature Series top discharge condensers.
Outdoor Specs
Model:MCAESHS4T3621AA (Signature Series Split System Heat Pump Condenser)
| Unit Type | Split System Heat Pump Condenser |
| Tonnage | 3 Ton |
| Cooling / Heating Capacity | 33,000 BTU / 33,000 BTU |
| Efficiency | 14.3 SEER2 • 11.7 EER2 • 7.5 HSPF2 |
| Airflow (CFM) | 2750 |
| Sound | 63 dB(A) |
| Inverter | No |
| Min Ambient (Cooling) | 59°F |
| Min Ambient (Heating) | 5°F |
| Refrigerant | R-454B • 102.3 oz |
| Max Line Set Length | 150 ft |
| Line Sizes | Liquid 3/8" • Suction 3/4" |
| Compressor | Scroll |
| Condenser Fan Motor | PSC • 1/7 HP |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Min Circuit Ampacity (MCA) | 22.2A |
| Max Fuse / Breaker | 30A |
| Certifications | UL Listed • CSA Listed • ETL Listed • AHRI Certified |
| Color | Grey |
| Dimensions (W×D×H) | 29.14" × 29.14" × 25" |
| Net Weight | 173 lb |
| GTIN / UPC | GTIN 00840255595803 • UPC 840255595803 |
| Proposition 65 | Yes |
Designed to work withSignature Series multi-positionorstud mountair handlers.
Documents & Downloads
- Signature Series Stud Mount Air Handler (MCAEAWPEF36E21AA)
- Brochure (EN)
- Installation & User Manual (EN)
- Warranty (EN)
- Signature Series Heat Pump Condenser (MCAESHS4T3621AA)
- 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 to150 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.
