MRCOOL DIY 12K BTU 5th Gen Ductless Mini Split Condenser - 115V

The MRCOOL DIY 12K BTU 5th Gen Ductless Mini Split Condenser is the 115V outdoor unit for MRCOOL's DIY 5th Gen 12K single-zone system, producing 12,000 BTU of cooling and heating at 23.5 SEER2 for rooms between 350 and 500 square feet. Standard household voltage makes it one of the easiest condensers in the lineup to power.

Installation follows the DIY playbook: the unit comes pre-charged with R-454B and joins a 5th Gen Quick Connect line set by hand, so there is no vacuum pump, no gauges, and no special tools or refrigerant certification. Add the matching air handler and line set, and most homeowners have it mounted and connected in an afternoon.

Ideal Spaces

• Large bedrooms and primary suites
• Home offices and dens
• Finished basements
• Studio apartments and garage conversions

With its 12K air handler, this condenser is right for rooms from 350 to 500 square feet. Insulation, ceiling height, and sun exposure all eat into that range, so pick the size that still works on the room's worst day.

Features

• 23.5 SEER2 cooling efficiency. Among the very best in the single-zone 5th Gen lineup, with a strong 10.2 HSPF2 heating figure to match.
• Runs on 115V. No 230V circuit required, which often saves an electrician visit compared to the bigger sizes.
• Energy Star certified. Good for the bill and often for utility rebate paperwork.
• 54 dBA outdoors. Tied for the quietest condenser in the single-zone 5th Gen lineup.
• Gold Fin coil coating. Extra corrosion protection for humid, rainy, and coastal locations.
• Smart-system convenience. SmartHVAC app on iOS and Android, Alexa and Google Assistant voice control, plus Timer, Auto Mode, Quiet Mode, automatic restart, and anti-mildew operation.

Key Specs

• Capacity: 12,000 BTU cooling and heating (1 ton)
• Efficiency: 23.5 SEER2, 12.5 EER2, 10.2 HSPF2
• Power: 115V single phase, 20A max breaker, 18A minimum circuit ampacity
• Refrigerant: R-454B, pre-charged (30.34 oz)
• Line connections: 1/4 in liquid, 3/8 in suction
• Outdoor sound level: 54 dBA
• Weight: 83.11 lb net
• Certifications: Energy Star, AHRI certified; UL and ETL listed

What you should know

Only the outdoor unit is in this box. The matching DIY 5th Gen 12K air handler and a 5th Gen Quick Connect line set complete the system, which makes this listing best suited to replacing a failed condenser or filling out a component build.

Even at 115V, the unit needs a dedicated circuit with a breaker no larger than 20 amps and 18A minimum circuit ampacity; it is not meant to share an outlet circuit with the rest of the room. At 83 pounds, one strong person can move it, but two make it easy.

Compatibility is 5th Gen only: the R-454B charge and Quick Connect fittings will not mate with 3rd or 4th Gen parts. Check for 1/4 in liquid and 3/8 in suction connections on your line set.

Warranty

• 7-year compressor warranty
• 5-year parts warranty

Specifications:

Need help?

Call us at 1-800-514-2418 and our HVAC product specialists will answer your questions and help customize your MRCOOL DIY 12K condenser setup.

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Good AirX is an Authorized MRCOOL Dealer. Every unit ships new, factory-sealed, and fully covered by MRCOOL's manufacturer warranty.