Professional climate control shouldn't come with a professional installation bill. The MRCOOL DIY Select 12,000 BTU Single Zone Mini-Split Heat Pump delivers year-round comfort to spaces up to 550 square feet, backed by inverter-driven efficiency, whisper-quiet operation, and the only pre-charged Quick Connect line set in its class. No vacuum pumps. No licensed contractors. No compromise. Four steps is all it takes: mount, connect, power on, and enjoy the kind of reliable, app-controlled comfort that used to cost twice as much to install.
FEATURES:
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System Capacity: 12,000 BTU heating and cooling output covers spaces up to 550 sq. ft., with a SEER2 rating of 17.5 and HSPF2-4 of 9.0 for year-round efficiency that keeps operating costs low.
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DIY Quick Connect Line Set (11.5 ft): Factory pre-charged with R-454B refrigerant and sealed Quick Connect fittings, this included 11.5 ft line set eliminates the need for vacuum pumps, gauges, or refrigerant handling, making true homeowner installation possible from day one. Additional lengths (16 ft, 25 ft, 35 ft, and 50 ft) are available separately.
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Inverter Technology: Variable-speed compressor operation continuously adjusts output to match your space's exact demand, reducing energy use and maintaining consistent temperatures without the on/off cycling of conventional systems.
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Ultra-Quiet Performance: Indoor noise levels as low as 17.5 dB(A) in Sleep mode make this unit ideal for bedrooms, home offices, and any space where silence matters.
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Smart Control via MRCOOL Comfort App: Adjust temperature, switch modes, build schedules, and monitor system performance from anywhere using the MRCOOL Comfort App, with added voice control through Amazon Alexa and Google Assistant.
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Future-Ready Refrigerant: Charged with R-454B, a next-generation low-GWP refrigerant that meets emerging environmental standards and positions your system for long-term regulatory compliance.
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Warranty and Care Program Coverage: Backed by a 2-year compressor warranty, a 1-year parts warranty.
SPECIFICATIONS:
| Capacity & Performance |
| Zone Capacity |
1 |
| Cooling Capacity |
12,000 BTU |
| SEER2 |
17.5 |
| EER2 |
8.5 |
| Outdoor Operating Temperature (Cooling) |
-13 to 122℉ |
| Heating Capacity |
12,000 BTU |
| HSPF2-4 |
9.0 |
| HSPF2-5 |
6.8 |
| Outdoor Operating Temperature (Heating) |
-13 to 75℉ |
| Coverage Area |
Up to 550 sq ft. |
| Outdoor Noise Level |
54 dB(A) |
| Indoor Noise Level (Turbo/Hi/Med/Low/Sl) |
44.5 / 40 / 35 / 25.5 / 17.5 dB(A) |
| Dimensions & Weight |
| Condenser Dimensions |
28.35 W" x 10.63 D" x 19.49 H" |
| Air Handler Dimensions |
31.57 W" x 7.87 D" x 11.61 H" |
| Condenser Weight |
54.89 lbs |
| Air Handler Weight |
24.91 lbs |
| Electrical Requirements |
| Voltage |
115V |
| Phase |
1 |
| Cycle |
60Hz |
| Min Circuit Ampacity |
19.5A |
| Max Fuse Breaker |
20A |
| Refrigerant & Piping |
| Line Set Length |
11.5 ft. |
| Refrigerant Type |
R-454B |
| Refrigerant Volume |
21.52 oz |
| Liquid Line Size |
1/4" |
| Suction Line Size |
3/8" |
| Max Line Set Length |
75 ft. |
| Features |
| Inverter Technology |
Yes |
| Wifi Compatibility |
Yes |
| App Compatibility |
Yes |
| Works with IOS |
Yes |
| Works with Android |
Yes |
| Remote Control Included |
Yes |
| Certifications & Warranty |
| Warranty |
2 Years Compressor
1 Years Parts |
GUIDES:
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.
