MRCOOL DIY 18K BTU 5th Gen Ductless Mini Split Condenser - 230V

The MRCOOL DIY 18K BTU 5th Gen Ductless Mini Split Condenser is the 230V, 1.5-ton outdoor unit behind MRCOOL's DIY 5th Gen 18K single-zone system, rated at 18,000 BTU of cooling and heating with 22.5 SEER2 efficiency for rooms between 500 and 750 square feet. Its 11.5 HSPF2 heating rating ties for the strongest in the single-zone 5th Gen lineup.

The DIY story holds here too. It ships pre-charged with R-454B and joins a 5th Gen Quick Connect line set with hand tools, so there is no vacuum pump, no gauges, and no special tools or refrigerant certification. With the matching air handler and line set ready, most homeowners have it mounted and connected in an afternoon.

Ideal Spaces

• Primary suites and large bedrooms
• Living rooms and dens
• Garages and workshops
• Finished basements

Paired with its 18K air handler, this condenser handles rooms in the 500 to 750 square foot band. Take the low end of that range if the space fights you with poor insulation, big glass, or high ceilings.

Features

• 22.5 SEER2 with 11.5 HSPF2. The DC inverter compressor is efficient in both directions, and that heating number means real winter performance per watt.
• Energy Star certified. A certification that often translates into utility rebate eligibility.
• Gold Fin coil coating. Corrosion resistance that holds up in humid and coastal settings.
• 58.5 dBA outdoors. Quiet enough to sit near a deck or bedroom wall without becoming the neighborhood soundtrack.
• Smart-system controls. Works with the SmartHVAC app on iOS and Android plus Amazon Alexa and Google Assistant as part of a 5th Gen system.
• Everyday conveniences. Timer, Auto Mode, automatic restart after power loss, and anti-mildew operation.

Key Specs

• Capacity: 18,000 BTU cooling and heating (1.5 ton)
• Efficiency: 22.5 SEER2, 13.7 EER2, 11.5 HSPF2
• Power: 208/230V single phase, 20A max breaker, 18A minimum circuit ampacity
• Refrigerant: R-454B, pre-charged (44.8 oz)
• Line connections: 1/4 in liquid, 1/2 in suction
• Outdoor sound level: 58.5 dBA
• Weight: 93.48 lb net
• Certifications: Energy Star, AHRI certified; UL and ETL listed

What you should know

This is the condenser by itself. To run, it needs the matching DIY 5th Gen 18K air handler and a 5th Gen Quick Connect line set, so treat this listing as a replacement part or the missing piece of a component build rather than a complete system.

On the electrical side, plan for a dedicated 208/230V circuit with a breaker no larger than 20 amps and 18A minimum circuit ampacity; hire an electrician if that circuit is not already in place. At around 93 pounds it is the most manageable of the larger 5th Gen condensers, but a helper still makes placement easier.

As with all 5th Gen equipment, the R-454B charge and Quick Connect fittings pair only with other 5th Gen components. Confirm your line set uses 1/4 in liquid and 1/2 in suction connections.

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 18K 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.