The MRCOOL® Universal® Series 36,000 BTU (3 Ton) Multi-Position Air Handler & Heat Pump Inverter Split System with R-454B refrigerant delivers reliable, energy-efficient heating and cooling throughout the year. With an 18.0 SEER2 rating and advanced DC inverter technology, it maintains consistent indoor comfort while reducing energy costs. Its slim, compact design allows for flexible installation in attics, closets, crawlspaces, or other space-restricted areas. Both the air handler and condenser are built for quiet, dependable operation and long-lasting durability, featuring corrosion-resistant components and compatibility with MRCOOL® NO-VAC® Quick Connect® line sets for fast, hassle-free installation. Optional heat kits enhance performance in extreme climates, and industry-leading warranties provide lasting peace of mind.
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High Efficiency: 18.0 SEER2 rating delivers year-round comfort while lowering energy usage.
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Advanced Inverter Technology: Variable-speed operation maintains steady temperatures with minimal noise and wear.
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Versatile Installation: Supports upflow, downflow, and horizontal configurations for flexible placement.
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Compact Design: Slim profile fits easily into attics, closets, crawlspaces, and other tight spaces.
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Quick Installation: Compatible with MRCOOL® NO-VAC® Quick Connect® line sets for faster, simpler setup without vacuuming or flaring.
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Optional Heat Kits: Boost cold-weather efficiency and provide emergency backup heating.
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Durable Construction: 100% aluminum M-shaped coil resists corrosion and maximizes heat exchange for long-lasting reliability.
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Quiet Performance: Engineered for whisper-quiet operation without sacrificing power.
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Warranty Protection: Backed by a 10-year parts warranty and 2-year limited labor warranty.
NOTE: Line sets are not included and must be purchased separately to fit your installation needs.
WHAT YOU GET:
SPECIFICATIONS:
| DIMENSIONS |
| Condenser Dimensions |
38.58" W x 16.34" D x 38.39" H |
| Air Handler Dimensions |
17.52" W x 21.50" D x 53.98" H |
| Condenser Weight |
204.15 lbs |
| Air Handler Weight |
149.25 lbs |
| CAPACITY & PERFORMANCE |
| Cooling Capacity |
36,000 BTU |
| Outdoor Operating Temperature (Cooling) |
-22°F to 122°F |
| SEER2 |
18.0 |
| EER2 |
12 |
| Heating Capacity |
37,000 BTU |
| Outdoor Operating Temperature (Heating) |
-22°F to 75°F |
| HSPF2-4 |
10.0 |
| HSPF2-5 |
8.2 |
| Coverage Area |
Up to 1,500 sq. ft. |
| Outdoor Noise Level |
63 dB(A) |
| Indoor Noise Level (Turbo/Hi/Mi/Lo) |
48 / 46 / 45 / 33 dB(A) |
| ELECTRICAL REQUIREMENTS |
| Condenser |
Voltage: 208-230V
Phase: 1
Cycle: 60 Hz
Max Fuse Breaker: 30A
Min Circuit Ampacity: 29A
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| Air Handler |
Voltage: 115/208/230V
Phase: 1
Cycle: 60 Hz
Max Fuse Breaker: 15A
Min Circuit Ampacity: 8.0/6.0A
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| REFRIGERANT & PIPING |
| Refrigerant Type |
R-454B |
| Refrigerant Volume |
126.99 oz |
| Liquid Line Size |
3/8" |
| Suction Line Size |
3/4" |
| Max Line Set Length |
246 ft. |
| FEATURES |
| Air Handler Mount Type |
Multi-Position (Upflow/Downflow/Horizontal) |
| Filter Type |
Replaceable |
| Filter Size |
16" x 20" x 1" |
| Compressor Type |
Rotary |
| Metering Device |
EXV |
| Auxiliary Heater Included |
No |
| Auxiliary Heater Available |
Yes |
| Compatible Auxiliary Heater Sizes |
5 KW / 8 KW / 10 KW / 15 KW / 20 KW |
| CERTIFICATIONS & WARRANTY |
| Certifications |
UL Listed, CSA Listed, ETL Listed, AHRI Certified |
| Warranty |
10 Year Parts and 2 Year Labor |
GUIDE:
SHIPPING POLICY:
Free Curbside Delivery
MRCOOL orders include free curbside delivery via FedEx Ground, FedEx Freight, or the most trusted carrier available. Please note that delivery is to the curbside only - be sure to arrange for assistance if needed, as the carrier will not bring items inside your home.
Tracking & Delivery Scheduling
In most cases, you will receive tracking details 3-5 business days after you place your order. When the tracking number is sent, please allow 1-2 business days for the tracking number to populate details.
RETURN POLICY:
MRCOOL returns must be requested within 30 days of your delivery date. We are unable to process returns submitted after this period. Products must be unused, uninstalled, and in their original packaging, including the box and pallet, to qualify for a return.
Restocking Fee
Please note, a 35% restocking fee will be applied to all approved returns.
Non-Returnable Items
Accessories including lineguards, wall mounts, linesets, couplers, and similar items are not eligible for return.
