The MRCOOL DIY 5th Gen Hyper Heat 12,000 BTU wall mount mini split is a 208/230V ductless heat pump rated at 23.5 SEER, sized for spaces of 350–550 sq. ft., and installs with a pre-charged 25-ft. DIY QuickConnect line set that needs no vacuuming.
Highlights
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True DIY installation — no special tools or professional installer required.
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25-ft. DIY QuickConnect line set, pre-charged with R-454B refrigerant, so there's no vacuuming step.
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DIYPRO cable replaces electrical conduit, adding protection against the elements.
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Flexible controls — included handheld remote, the 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
| Capacity |
12,000 BTU cooling / heating (Hyper Heat) |
| Efficiency |
23.5 SEER |
| Voltage |
208/230V |
| Coverage Area |
Up to 550 sq. ft. |
| Indoor Unit Type |
Wall mount air handler |
| Line Set |
25 ft., DIY QuickConnect, pre-charged with R-454B refrigerant |
| Certification |
Intertek Listed 5031495 |
| Warranty |
7-year compressor, 5-year parts, limited lifetime warranty |
- Follow Me function tracks the remote's location for even airflow.
- Remote control included.
Details
Avermont Direct is an authorized MRCOOL dealer. This DIY 12,000 BTU Hyper Heat single-zone system lets a homeowner heat and cool a space up to 550 sq. ft. without hiring an HVAC professional, using the included pre-charged line set and DIYPRO cable. It carries a 7-year compressor and 5-year parts warranty, backed by a limited lifetime warranty, and suits a single room or open living area needing efficient, code-compliant supplemental heating and cooling.
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
