The MRCOOL® Universal® Series 36K Air Handler delivers reliable, energy-efficient heating and cooling year-round. Its slim, versatile design allows for flexible installation in attics, closets, or crawlspaces, while the corrosion-resistant aluminum coil ensures long-lasting performance. Quiet operation, compatibility with MRCOOL® NO-VAC® Quick Connect® line sets, and optional heat kits make this air handler both convenient and high-performing. Backed by a solid warranty, it’s a dependable solution for maintaining comfortable indoor environments in any season.
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Versatile Installation: Supports upflow, downflow, and horizontal configurations for flexible placement in a variety of spaces.
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Compact Design: Slim profile fits easily in attics, closets, and crawlspaces.
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Quick Connect® Compatible: Works with MRCOOL® NO-VAC® Quick Connect® line sets for fast, no-vacuum installation.
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Optional Heat Kits: Provides additional heating capacity and backup support for extreme winter conditions.
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Durable Coil: M-shaped 100% aluminum coil maximizes airflow and heat exchange while resisting corrosion.
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Quiet Operation: Engineered to deliver powerful performance at whisper-quiet sound levels.
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Reliable Warranty: Backed by a 10-year parts warranty and 2-year limited labor warranty for peace of mind.
SPECIFICATIONS:
| DIMENSIONS |
| Dimensions |
17.52" W x 21.50" D x 53.98" H |
| Air Handler Mount Type |
Multi-Position (Upflow/Downflow/Horizontal) |
| Weight |
149.25 lbs |
| CAPACITY & PERFORMANCE |
| Tonnage |
3 |
| Cooling Capacity |
36,000 BTU |
| Heating Capacity |
37,000 BTU |
| Coverage Area |
Up to 1,500 sq. ft. |
| Noise Level (Turbo/Hi/Mi/Lo) |
48 / 46 / 45 / 33 dB(A) |
| Indoor air flow (Turbo/Hi/Mi/Lo) |
1236 / 1147 / 1059 / 971 CFM |
| ELECTRICAL REQUIREMENTS |
| Voltage |
115/208/230V |
| Phase |
1 |
| Cycle |
60 Hz |
| Max Fuse Breaker |
15A |
| Min Circuit Ampacity |
8.0/6.0A |
| REFRIGERANT & PIPING |
| Refrigerant Type |
R-454B |
| Liquid Line Size |
3/8" |
| Suction Line Size |
3/4" |
| Max Line Set Length |
246 ft. |
| FEATURES |
| Filter Type |
Replaceable |
| Filter Size |
16" x 20" x 1" |
| 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 |
| CERTIFICATION & WARRANTY |
| Certifications |
UL Listed, CSA Listed, ETL Listed |
| 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.
