Heat Pump

Carrier 1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1) service and support

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

Product service snapshot

Carrier 1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1) service details

1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1) is a Carrier®, Bryant® heat pump record from the Carrier Enterprise catalog. Catalog model: 45MUAAQ18XX3. Product family: 45MUAA. Green Flow Solution uses this page for residential model identification, service planning, maintenance conversations, repair diagnostics, and replacement matching.

Brand: Carrier
Model or series: 1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1)
Equipment type: Heat Pump
Product group: Residential Heat Pump - 45MUAA

Technical snapshot

1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1) technical snapshot

Product Specs

Model: 45MUAAQ18XX3
Manufacturer Number: 45MUAAQ18XX3
Vendor Number: 45MUAAQ18XX3
Catalog Brand: Carrier®, Bryant®
Product Family: 45MUAA
AHRI Usage: Indoor AHU
Air Flow Direction: Multi-Position
Approvals: ETL Listed; UL Listed
Blower Motor HP: 1/3
Blower Motor RPM: 550
Blower Motor Speeds: 3
Blower Motor Type: ECM (Electronically Commutated Motor)
Brand: Carrier®, Bryant®
CFM: 488.54-618.03
Cabinet Width: 21
Color: Gray
Cooling Capacity: 18,000
Cooling Rated Capacity Btu/h: 18000
Country Of Origin: CHN
Cycle/Hertz: 60 Hz
Drain Connection Size: 3/4"
Electric Heat Range [kW]: 5-10
Energy Star Rated: YES
Evaporator Coil Fins Per Inch (FPI): 20
Filter Size: 16" x 20" x 1
Heating Capacity: 6,000-22,000
Height: 45
Includes Filter Rack: YES
Length: 21
Liquid Line Fitting Type: Flare
Liquid Line Size (OD): 3/8"
Maximum Overcurrent Protection (MOCP): 15
Metering Device: EEV - Electronic Expansion Valve
Mounting Type: Ducted Multi-Position
OPT Code: 1P45MUAAQ18XX3
Phase: Single
Prop 65: YES
Refrigerant: R-454B
Suction Line Fitting Type: Flare
Suction Line Size (OD): 3/4"
Tier: Standard
Tonnage: 1.5
Voltage: 115 VAC; 208-230 VAC
Weight: 126.7
Width: 17.5

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 1.5 Ton Heat Pump Crossover System Fan Coil 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.

1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1) service questions

Can GreenFlow help with Carrier 1.5 Ton Heat Pump Crossover System Fan Coil Unit R-454B (208/230-1) service requests?

Yes. GreenFlow can help collect the right details for Carrier 1.5 Ton Heat Pump Crossover System Fan Coil 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 1.5 Ton Heat Pump Crossover System Fan Coil 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 1.5 Ton Heat Pump Crossover System Fan Coil 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 1.5 Ton Heat Pump Crossover System Fan Coil 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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