The MRCOOL DIY 5th Gen E Star 12,000 BTU single-zone mini split is rated 23.5 SEER2, sized for 350–500 sq. ft., and includes a 25-ft. pre-charged DIY QuickConnect line set with R-454B refrigerant for vacuum-free installation.
Highlights
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Tool-free DIY installation — no prior HVAC experience required.
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DIY QuickConnect line set pre-charged with lower-GWP R-454B refrigerant for quick, vacuum-free setup.
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DIYPRO cable eliminates the need for electrical conduit, adding durability against outdoor elements and wildlife.
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Multiple control options — included remote, SmartHVAC app (Apple and Android), or voice commands via Amazon Alexa and Google Assistant.
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Follow Me function and Dry Mode for location-based comfort and humidity control.
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Gold Fin condenser resists corrosion in coastal climates; Intertek listed 5031495.
Specs & Features
| Condenser Dimensions |
30.12"W x 11.93"D x 21.85"H |
| Air Handler Dimensions |
31.57"W x 7.44"D x 11.69"H |
| Condenser Weight |
65.48 lbs |
| Air Handler Weight |
24.91 lbs |
| Zone Capacity |
1 |
| Cooling Capacity |
12,000 BTU |
| Heating Capacity |
12,000 BTU |
| EER2 |
12.5 |
| SEER2 |
23.5 |
| HSPF2 (Region 4 / Region 5) |
10.2 / 7.6 |
| Coverage Area |
350 to 500 sq. ft. |
| Outdoor Noise Level |
54 dB(A) |
| Indoor Noise Level (Hi/Mi/Lo) |
43.0/39.5/33.5/24.0/18.0 dB(A) |
| Voltage |
115V, 1 Phase, 60 Hz |
| Refrigerant |
R-454B, 30.34 oz |
| Line Set |
1/4" liquid / 3/8" suction, max length 82 ft. |
| Remote Control Included |
Yes |
| Wifi / App Compatibility |
Yes (iOS and Android) |
| Certifications |
UL Listed, ETL Listed, Energy Star Certified, AHRI Certified |
| Warranty |
7-year compressor, 5-year parts, extended limited lifetime replacement with registration and MRCOOL Care Program enrollment (defaults to standard 5-year parts / 7-year compressor if not registered) |
- DC inverter with rotary compressor; Quiet Mode and Fan Only options.
Details
Avermont Direct is an authorized MRCOOL dealer. This DIY 12,000 BTU single-zone system is sized for a room or open area of 350 to 500 sq. ft., installed with the pre-charged line set and DIYPRO cable so no HVAC professional is required. It carries a 7-year compressor and 5-year parts warranty, extendable to a limited lifetime replacement with registration and MRCOOL Care Program enrollment.
Need Help?
If you have questions about this product before you order, our team is happy to help.
Email: support@avermontdirect.com
Phone: +1 (844) 455-3695
Hours: Monday–Friday, 9AM–5PM
Live Chat: Available 24/7
