Heat Pump

Carrier Heat Pump Ductless 48000 Btuh Heat Pump 4-Way Cassette Unit R-454B (208/230-1)

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

Technical Specifications

Product Specs

Model: 45MBCAQ48XA3
Manufacturer Number: 45MBCAQ48XA3
Vendor Number: 45MBCAQ48XA3
Catalog Brand: Carrier®, Bryant®
Product Family: 45MBCA
AHRI Usage: Indoor AHU
Blower Motor HP: 17/100
Blower Motor RPM: 736
Blower Motor Speeds: 3
Blower Motor Type: ECM (Electronically Commutated Motor)
Blower Motor Watts: 125
Blower Wheel Diameter: 18 7/10
Blower Wheel Width: 6 7/10
Brand: Carrier®, Bryant®
CFM: 1,236
CFM Heating: 806.36-1,118.3
Color: White
Cooling Capacity: 48,000
Cooling Rated Capacity Btu/h: 48000
Country Of Origin: CHN
Cycle/Hertz: 60 Hz
Energy Star Rated: NO
Evaporator Coil Fins Per Inch (FPI): 20
Heating Capacity: 48,000
Height: 11.3
Length: 32.68
Liquid Line Fitting Type: Flare
Liquid Line Size (OD): 3/8"
Mounting Type: Ceiling Cassette
Multi Zone: YES
Number Of HVAC Zones: 1
OPT Code: 1P45MBCAQ48XA3
Phase: Single
Prop 65: YES
Refrigerant: R-454B
Remote Control Included: NO
Sound Level (dBA): 38-52
Stages Cooling: 1
Stages Heating: 1
Suction Line Fitting Type: Flare
Suction Line Size (OD): 3/4"
Tier: Performance™
Tonnage: 4
UPC: See Optical
Voltage: 208-230 VAC
Weight: 64.59
Width: 32.68

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 48000 Btuh Heat Pump 4-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.

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Our Happy Customers

Jenny W.

Great service! On time, knowledgeable & professional

Anna F.

They showed up within an hour of me making the call on a Sunday. They fixed our system and taught us how to replace the fuse in the future. We would definitely call again.

Michael C.

always available, easy to get a hold of, as a property manager I get lots no heat emergency, usually get to it same day or next day

John F.

I needed 2 new AC units and decided to go with high efficiency heat pumps. I chose Greenflow because of the equipment they offered, and the price (2nd lowest quote and much cheaper than the average of all quote we received). Their technicians were very detail oriented and...

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