Heat Pump

Carrier Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) service and support

Carrier Residential Heat Pump - 45MCCA Heat Pump Repair, maintenance, and replacement planning

Product service snapshot

Carrier Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) service details

Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) is a Carrier®, Bryant® heat pump record from the Carrier Enterprise catalog. Catalog model: 45MCCAQ12XA3. Product family: 45MCCA. Green Flow Solution uses this page for residential model identification, service planning, maintenance conversations, repair diagnostics, and replacement matching.

Brand: Carrier
Model or series: Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1)
Equipment type: Heat Pump
Product group: Residential Heat Pump - 45MCCA

Technical snapshot

Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) technical snapshot

Product Specs

Model: 45MCCAQ12XA3
Manufacturer Number: 45MCCAQ12XA3
Vendor Number: 45MCCAQ12XA3
Catalog Brand: Carrier®, Bryant®
Product Family: 45MCCA
AHRI Usage: Indoor AHU
Blower Motor HP: 1/25
Blower Motor RPM: 1,075
Blower Motor Speeds: 4
Blower Motor Type: ECM (Electronically Commutated Motor)
Blower Motor Watts: 78.6
Blower Wheel Diameter: 3 7/10
Blower Wheel Width: 32 3/10
Brand: Carrier®, Bryant®
CFM: 247-312
CFM Heating: 247.06-311.76
COP: 2.34
Color: White
Cooling Capacity: 12,000
Cooling Rated Capacity Btu/h: 13500
Country Of Origin: CHN
Cycle/Hertz: 60 Hz
Drain Connection Size: 3/8"
EER2: 13
Energy Star Rated: YES
Evaporator Coil Fins Per Inch (FPI): 20
HSPF2: 13.5
Heating Capacity: 15,200-15,200
Height: 8.9
Length: 13.1
Liquid Line Fitting Type: Flare
Liquid Line Size (OD): 1/4"
Metering Device: EEV - Electronic Expansion Valve
Mounting Type: Ceiling Cassette
Multi Zone: YES
OPT Code: 1P45MCCAQ12XA3
Phase: Single
Prop 65: YES
Refrigerant: R-454B
Remote Control Included: YES
SEER2: 21.2
Sound Level (dBA): 24-41
Stages Cooling: 1
Stages Heating: 1
Suction Line Fitting Type: Flare
Suction Line Size (OD): 3/8"
Tier: Standard
Tonnage: 1
Voltage: 208-230 VAC
Weight: 82.4
Width: 50.3

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 Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) requests

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.

Describe the service issue

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

Review access and history

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

Plan the next step

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

Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) service questions

Can GreenFlow help with Carrier Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) service requests?

Yes. GreenFlow can help collect the right details for Carrier Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) service requests, including the model, symptoms, equipment age, building type, access notes, photos, and timing.

What symptoms should I mention for Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1)?

Helpful symptoms include no heat, no cooling, weak airflow, defrost or outdoor icing concerns, auxiliary heat behavior, thermostat issues, short cycling, unusual noise, and whether the request is urgent or planned maintenance.

Is Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) used for residential or commercial properties?

Heat pump requests may come from homes, condos, multifamily properties, managed buildings, and light-commercial spaces depending on the system type and building layout.

What helps schedule Ductless 9,000/12,000 Btuh Heat Pump Indoor One Way Cassette Unit R-454B (208/230-1) service faster?

Share the exact model and serial number if available, clear photos of the equipment and surrounding access area, current symptoms, recent maintenance history, and whether the request is repair, maintenance, or replacement planning.

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Our Happy Customers

Michael C.

Very fast turnaround time and repair will use again for sure

William Z.

Quick service

Andrea W.

Andrey was quick, efficient, and professional. He was also very informative about the condition of the heat pump and gave options for repair/replacement. His cost estimates are reasonable. Highly recommend.

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...

Yakov S.

I had an excellent experience with Green Flow, they were available to replace my dead central A/C unit on a short notice, and the price was thousands of dollars less than what I got quoted by two other companies. I would definitely use them again.

Paula G.

Excellent professionals and price. Really recommend them!