MRCOOL
MRCOOL Signature 36,000 BTU Split System Air Handler Multi-Position
3 Ton | R-454B | 208/230V
- 3 Ton capacity
- Uses R-454B refrigerant
- Runs on 208/230V power
Key Specifications
Product Overview
The MRCOOL® Signature Series 36k Multi-Position Air Handler delivers dependable, energy-efficient comfort in any season. With the addition of environmentally friendly R-454B refrigerant, this system supports cleaner standards while helping to lower energy costs and reduce your home's carbon footprint.
Designed for flexibility and space efficiency, the unit can be installed in upflow, downflow, or horizontal positions, making it an ideal choice to accommodate a wide variety of residential layouts. Its compact, modern design allows it to fit easily into tight areas like attics, closets, or crawl spaces without sacrificing performance. When paired with a compatible heat pump or condenser, it provides powerful, year-round heating and cooling.
The air handler features a durable galvanized steel cabinet, a high-efficiency ECM blower motor, and copper “A” coils with enhanced aluminum fins for optimized heat transfer and humidity control. Internal thermal insulation minimizes energy loss and condensation, improving both comfort and efficiency.
Installation is straightforward and designed to reduce labor time and complexity. A built in air filter rack makes maintenance quick and convenient, while an optional electric heat kit enhances performance in colder climates.
For smart home convenience, this unit works seamlessly with most third-party thermostats, giving you the freedom to choose how you control your comfort without being locked into a specific brand.
Backed by a 10-year limited parts warranty, the MRCOOL® Signature Series 36k Multi-Position Air Handler offers lasting performance, efficient operation, and flexible installation for total home comfort.
Additional specifications
| UPC | 840255595872 |
|---|---|
| Series | Signature Series Multi-Position Air Handler |
| Configuration | Multi-Position |
| Airflow (CFM) | 1131 |
| Cycle (Hz) | 60 |
| Min circuit ampacity (A) | 4.5 |
| Max fuse / breaker (A) | 6 |
| Blower motor type | ECM |
| Blower motor HP | 1/2 |
| Blower speeds | 5 |
| Metering device | Orifice |
| Drain connection (in) | 3/4 |
| Filter type | Replaceable |
| Filter size | 18 * 21 * 1 |
| Mount type | Multi-Position |
| Aux heater included | No |
| Aux heater available | Yes |
| Aux heater sizes (kW) | 5kW, 7.5kW, 10kW |
| AHRI certified | Yes |
| ENERGY STAR certified | No |
| UL listed | Yes |
| ETL listed | Yes |
| Parts warranty (years) | 10 Year |
| Compressor warranty (yrs) | Limited Lifetime |
| Shipping W x H x D (in) | 22.83 x 47.625 x 25.6 |
| Shipping weight (lbs) | 142 |
Documents
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Technical Specifications
Performance
| System Type | Air Handler |
|---|---|
| Tonnage | 3 Ton |
| Sound Level | 55 dBA |
Electrical & Fuel
| Voltage | 208/230V |
|---|---|
| Phase | Single Phase |
| Refrigerant | R-454B |
| Connection Size | Liquid 3/8" / Suction 3/4" |
Physical & Certifications
| Dimensions (W x H x D) | 19.625 x 45.75 x 22 |
|---|---|
| Weight | 129 lb |
| Color / Finish | Grey |
Shipping & Delivery
Manufacturer Warranty
Covered by MRCOOL's limited warranty. Warranty terms are set by MRCOOL and differ by product line — whether registration is required, and whether the installation has to be performed by a state-licensed HVAC contractor, is not the same across the range. In every case coverage depends on the unit being installed according to MRCOOL's instructions and all applicable codes and permits. MRCOOL's warranty document for this model is the controlling source; ask us and we'll send you the one that applies.
Professional Installation Recommended
Most HVAC equipment must be installed and connected by a licensed professional to remain safe, code-compliant, and eligible for manufacturer warranty coverage. If you're unsure about installation requirements, contact us before you order.
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