MRCOOL
MRCOOL Universal Series 36,000 BTU Air Handler
3 Ton | R-454B | 115/208/230V
- 3 Ton capacity
- Uses R-454B refrigerant
- Runs on 115/208/230V power
Key Specifications
Product Overview
The MRCOOL® Universal® Series 36K Air Handler offers a high-efficiency, performance-driven solution for year-round indoor comfort. Designed to meet the needs of modern homeowners, it’s the perfect upgrade for those looking to reduce energy costs without sacrificing heating and cooling performance.
Built for flexibility, the air handler features a multi-position design that allows for vertical, horizontal, or downflow installation. This makes it adaptable to a wide range of home layouts and ideal for tight or limited spaces. Its compact footprint simplifies placement, while compatibility with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) makes installation even easier. This innovative line set comes pre-charged and sealed, eliminating the need for vacuuming, flaring, or handling refrigerant—saving both time and installation cost.
For enhanced functionality, the air handler supports optional Universal® Series Heat Kits, which can boost heating capacity during cold weather or serve as emergency backup heat during unexpected temperature drops.
Inside, the system features an advanced M-shaped evaporator coil that increases the surface area for better heat exchange, improved airflow, and higher energy efficiency. Quiet operation ensures it blends seamlessly into your home environment, producing sound levels comparable to everyday conversation or a running dishwasher.
The coil is constructed from 100% aluminum for superior corrosion resistance and long-term durability. Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 36K Air Handler delivers reliable performance and peace of mind.
Additional specifications
| UPC | 840255587846 |
|---|---|
| Series | Universal R-454B |
| Airflow (CFM) | 1236.1/1147.8/1059.5/971.2/N\A |
| Cycle (Hz) | 60 |
| Min circuit ampacity (A) | 8/6 |
| Max fuse / breaker (A) | 15 |
| Metering device | EXV |
| Max line set length (ft) | 246 |
| Filter type | Replaceable |
| Filter size | 16 x 20 x 1 |
| Mount type | Multi-Position |
| Sound level low (dBA) | 33 |
| Sound level high (dBA) | 48 |
| Aux heater included | No |
| Aux heater available | Yes |
| Aux heater sizes (kW) | 5 KW / 8 KW / 10 KW / 15 KW / 20 KW |
| UL listed | Yes |
| ETL listed | Yes |
| Parts warranty (years) | 10 Years |
| Shipping W x H x D (in) | 20.47 x 57.09 x 31.1 |
| Shipping weight (lbs) | 182.1 |
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 | Universal Series Air Handler |
|---|---|
| Tonnage | 3 Ton |
| Sound Level | 48/46.5/45/33/N\A dBA |
Electrical & Fuel
| Voltage | 115/208/230V |
|---|---|
| Phase | Single Phase |
| Refrigerant | R-454B |
| Connection Size | Liquid 3/8" / Suction 3/4" |
Physical & Certifications
| Dimensions (W x H x D) | 17.52 x 53.98 x 21.5 |
|---|---|
| Weight | 149.25 lb |
| Color / Finish | Dark 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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