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Carrier Ductless / Mini Split ® Toshiba 1-Way Cassette 12000 Btu Indoor Unit(208/230-1-60)

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Carrier Residential Ductless / Mini Split - MMU1Y Ductless / Mini Split Repair, maintenance, and replacement planning
Carrier® Toshiba 1-Way Cassette 12000 Btu Indoor Unit(208/230-1-60) product image

Technical Specifications

Product Specs

  • Model: MMU-AP0121YHPUL
  • Manufacturer Number: MMU-AP0121YHPUL
  • Vendor Number: MMU-AP0121YHPUL
  • Catalog Brand: Toshiba Carrier
  • Product Family: MMU1Y
  • AHRI Usage: Indoor AHU
  • Approvals: ETL Listed
  • Blower Motor Speeds: 3
  • Brand: Toshiba Carrier
  • CFM: 171-318
  • Color: White
  • Cooling Capacity: 12,000
  • Country Of Origin: USA
  • Cycle/Hertz: 60 Hz
  • Energy Star Rated: NO
  • Heating Capacity: 13,500
  • Height: 5.875
  • Length: 17.75
  • Liquid Line Fitting Type: Flare
  • Liquid Line Size (OD): 1/4"
  • Maximum Overcurrent Protection (MOCP): 15
  • Mounting Type: Ceiling Cassette
  • Phase: Single
  • Prop 65: YES
  • Refrigerant: R-410A
  • Sound Level (dBA): 26-40
  • Suction Line Fitting Type: Flare
  • Suction Line Size (OD): 3/8"
  • Tonnage: 1
  • Voltage: 208-230 VAC
  • Weight: 30.9
  • Width: 39

Useful troubleshooting details

  • Confirm the exact model number, serial number, installed equipment type, and site voltage before service or replacement planning.
  • Match replacement equipment and accessories against current Carrier compatibility requirements, refrigerant type, capacity, airflow, and local code requirements.

Service planning

How GreenFlow handles Carrier® Toshiba 1-Way Cassette 12000 Btu Indoor Unit(208/230-1-60) requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Our Happy Customers

Dev W.

I had a breakdown of my cooling system and Hanna at Green Flow responded to my request right away. They scheduled me same day. The team at Green Flow was easy to communicate with over phone and text. They kept me updated on delays on arrival of the...

Randy J.

Thanks to Andrey for an amazingly quick response to my request for a service call. He diagnosed and fixed my issue within 24 hours of my asking for help. Excellent service. Thanks.

Jenny W.

Great service! On time, knowledgeable & professional

Neal V.

In an industry that often fraught with contractors taking advantage of homeowners, Andrey was honest with his assessment and willing to install a product acquired elsewhere (most want that margin themselves), patiently answered my questions (I’m an engineer so like to understand what’s happening), and proactively offered practical...

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