MRCOOL
MRCOOL Signature 18,000 BTU Split System Air Handler Multi-Position
1.5 Ton | R-454B | 208/230V
- 1.5 Ton capacity
- Uses R-454B refrigerant
- Runs on 208/230V power
Key Specifications
Product Overview
The MRCOOL® Signature Series 18k Multi-Position Air Handler delivers dependable, year-round climate control with enhanced energy efficiency thanks to its use of R-454B refrigerant, an eco-friendly upgrade that reduces environmental impact without sacrificing performance. Built for flexibility, this unit supports upflow, downflow, and horizontal configurations, making it an excellent choice for compact installations such as closets, attics, and crawl spaces.
Despite its slim profile, this Signature Series Air Handler provides robust heating and cooling when matched with a compatible heat pump or condenser. Its tough galvanized steel cabinet resists wear and corrosion, ensuring long-term durability.
Inside, copper “A” coils with high-efficiency aluminum fins maximize heat transfer and moisture removal, while internal thermal insulation minimizes energy waste and condensation, keeping comfort high and utility bills low.
Installation is streamlined with its user-friendly design, saving time and reducing labor costs. A built-in air filter rack allows for quick filter replacements, and an optional electric heat kit is available for enhanced performance in colder regions.
Smart home ready, this unit works with most third-party thermostats, giving homeowners the freedom to customize their comfort without relying on proprietary controls.
Covered by a 10-year limited parts warranty, the MRCOOL® Signature Series 18k Multi-Position Air Handler combines strength, efficiency, and adaptability delivering powerful, reliable comfort all year long.
Additional specifications
| UPC | 840255595841 |
|---|---|
| Series | Signature Series Multi-Position Air Handler |
| Configuration | Multi-Position |
| Airflow (CFM) | 749 |
| Cycle (Hz) | 60 |
| Min circuit ampacity (A) | 2.1 |
| Max fuse / breaker (A) | 3 |
| Blower motor type | PSC |
| Blower motor HP | 1/4 |
| Blower speeds | 3 |
| 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 |
| 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) | 133 |
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 | 1.5 Ton |
| Sound Level | 53 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 | 120 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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