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

The MRCOOL DIY 12K BTU 5th Gen Ductless Mini Split Air Handler is the 115V, 1-ton indoor wall unit for MRCOOL's DIY 5th Gen 12K single-zone systems, matched to spaces up to 550 square feet. It is the quiet, app-connected half of the pair that lives inside your room.

The 5th Gen platform was built so an ordinary homeowner can do the whole job. The air handler ties into its matching condenser through a pre-charged Quick Connect line set, so there is no vacuum pump, no gauges, and no special tools or refrigerant certification anywhere in the process. Most homeowners have it mounted and connected in an afternoon.

Ideal Spaces

• Bedrooms and guest rooms
• Home offices and dens
• Small finished basements
• Studio spaces and bonus rooms

Paired with its 12K condenser, this head is right for rooms up to 550 square feet. Insulation quality decides how honest that number is in your house; sun-baked or drafty rooms deserve the next size up.

Features

• Barely-there sound. At 18 dBA on its lowest of 5 speeds, the fan is quieter than rustling leaves; even wide open it tops out at 43 dBA.
• Energy Star certified. Useful both for your power bill and for qualifying utility rebate programs.
• Three ways to control it. The included wireless remote, the SmartHVAC app on iOS or Android, or your voice through Amazon Alexa and Google Assistant.
• Follow Me technology. The remote reports its own temperature reading, so the system conditions the spot where you put it.
• Dry Mode. Strips humidity out of damp rooms without overcooling them.
• Washable filter and oscillating louvers. No filter subscriptions, and airflow that sweeps rather than streams.

Key Specs

• Capacity class: 12,000 BTU (1 ton)
• Power: 115V single phase, 15A max fuse
• Coverage: spaces up to 550 square feet
• Sound: 18 to 43 dBA across 5 fan speeds
• Line connections: 1/4 in liquid, 3/8 in suction
• Filter: washable and reusable
• Mount type: wall, 31.57 in wide and 24.91 lb
• Certifications: Energy Star, AHRI certified; UL and ETL listed

What you should know

This is the indoor air handler on its own, with no condenser or line set in the box. It exists for two buyers: someone replacing the wall unit on an existing DIY 5th Gen 12K system, and someone piecing together a custom setup. Anyone starting fresh should look at the complete 12K system instead.

Compatibility is strictly within the 5th Gen family. These units run R-454B and will not pair with 3rd or 4th Gen condensers or line sets. Match the 1/4 in liquid and 3/8 in suction connections when choosing your line set.

As a component, this air handler falls under MRCOOL's 5-year parts coverage; the 7-year compressor term applies to the outdoor unit in a full system.

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 air handler setup.

Order online in minutes. Secure checkout, free shipping, and no sales tax.

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