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The MRCOOL DIY Select 9K is a single-zone ductless mini-split heat pump for rooms up to 400 square feet. It pairs a 115V outdoor condenser with a white wall-mounted air handler and ships with a pre-charged 11.5-foot Quick Connect line set using R-454B refrigerant, so no vacuum pump or gauges are needed. Efficiency is 17.5 SEER2 for cooling and 8.8 HSPF2 for heating, with Wi-Fi control through the MRCOOL Comfort app plus Alexa and Google Assistant. Against pro-installed brands like Mitsubishi and Fujitsu, it trades some refinement and a shorter warranty for genuine plug-and-play installation.
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Lowest price we've seen: $1,249.00 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Owners rate it highly, with 4.9 out of 5 from 96 ratings. Most praise the straightforward Quick Connect install and reliable cooling; a few note the short warranty and the limits of a 9K unit.
This is a single-zone ductless mini-split heat pump with a wall-mounted indoor air handler and an outdoor condenser. It has a 9,000 BTU capacity (0.75 ton) and conditions spaces up to 400 square feet. It is rated 17.5 SEER2 for cooling and 8.8 HSPF2-4 for heating, and it uses a variable-speed inverter compressor.
It is designed for do-it-yourself installation without specialized tools, HVAC certification or prior experience. The 11.5-foot Quick Connect line set comes pre-charged with R-454B refrigerant, so no vacuum pump, gauges or refrigerant handling are needed. A 13-foot DIYPRO cable replaces traditional electrical conduit and protects the wiring from moisture, pests and outdoor exposure. The condenser has a Gold Fin coating for corrosion resistance.
The system can be controlled with the included wireless remote or with the MRCOOL Comfort app over Wi-Fi. The app handles remote temperature control, scheduling and energy monitoring. It also works with Amazon Alexa and Google Assistant. Modes are Sleep, Dry, Auto and Fan-Only, and the air filter is washable and reusable.
