Description
This MRCOOL Signature Series 3-ton heat pump split system pairs the MCAESHS4T3621AA R-454B heat pump condenser with the MCAEAMPEF36C21AA multi-position air handler (ECM blower). The combination is AHRI certified (AHRI #217513230) at 14.3 SEER2 and 11.7 EER2 with 7.5 HSPF2 heating, delivering 33,000 BTU/h of rated cooling. It is a straightforward, efficient replacement for an older R-410A split system and provides year-round heating and cooling.
What's Included
- 1 × MCAESHS4T3621AA — Signature Series 3 Ton R-454B heat pump condenser
- 1 × MCAEAMPEF36C21AA — Signature Series 3 Ton multi-position air handler, ECM motor
System Performance
| AHRI Reference Number | 217513230 |
|---|---|
| Cooling Capacity | 33,000 BTU/h |
| Heating Capacity (47°F) | 33,000 BTU/h |
| SEER2 | 14.3 |
| EER2 | 11.7 |
| HSPF2 (Region IV) | 7.5 |
| Refrigerant | R-454B |
| Power Supply | 208/230V, 1-Phase, 60 Hz |
Component Specifications
Heat Pump Condenser — MCAESHS4T3621AA
| Minimum Circuit Ampacity | 22.2 A |
|---|---|
| Maximum Fuse / Breaker | 30 A |
| Refrigerant Connections | 3/8" liquid, 3/4" suction |
| Sound Level | 63 dB(A) |
| Unit Dimensions (W x H x D) | 29.14" x 25" x 29.14" |
| Unit Weight | 173 lb |
| Cooling/Heating Capacity | 36k |
| SEER2 Rating | 14.3 |
| EER2 Rating | 11.7 |
| Refrigerant | Pre-charged with R-454B |
| Compressor | Single-speed scroll compressor for dependable operation |
| Heat Transfer | Inner-groove copper tubing for improved responsiveness and energy efficiency |
| Built-In Protection | Temperature and pressure sensors |
| Defrost Function | Intelligent defrost for reliable cold-weather performance |
| Noise Level | Quiet operation at 63 decibels with sound-dampening top |
| Durability Features | Steel louver coil guard and wire fan discharge grille |
| Service-Friendly Features | Sweat connection service valves and accessible gauge port |
Multi-Position Air Handler — MCAEAMPEF36C21AA
| Blower Motor | ECM, 1/2 HP |
|---|---|
| Rated Airflow | 1131 CFM |
| Minimum Circuit Ampacity | 4.5 A |
| Maximum Fuse / Breaker | 6 A |
| Unit Dimensions (W x H x D) | 19.6" x 45.75" x 22" |
| Unit Weight | 129 lb |
| Capacity | 36k (≈3 ton) |
| Refrigerant | R-454B (eco-friendly, lower carbon footprint) |
| Configuration | Multi-position (upflow, downflow, horizontal) |
| Design | Compact and modern — fits in attics, closets, or crawlspaces |
| Cabinet | Durable galvanized steel construction |
| Blower Motor | High-efficiency ECM |
| Coil | Copper “A” coils with enhanced aluminum fins for heat transfer & humidity control |
| Insulation | Internal thermal insulation reduces energy loss, condensation & noise |
| Filter | Built-in filter rack for easy maintenance |
| Heat Option | Compatible with optional electric heat kit for colder climates |
| Thermostat Compatibility | Works with most third-party thermostats (smart home ready) |
Compatibility & Installation
- Electric heat: Add a Signature Series R-454B heat kit (5–15 kW) using the "Add an Electric Heat Strip" option above.
- Line set: Sweat connections, 3/8" liquid / 3/4" suction; line set not included.
- Thermostat: Standard 24V heat pump thermostat (not included).
- Professional installation: Licensed HVAC contractor required; R-454B is an A2L refrigerant.
