Heat Pump

Carrier Ductless 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1) service and support

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

Product service snapshot

Carrier Ductless 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1) service details

Ductless 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1) is a Carrier®, Bryant®, Payne® heat pump record from the Carrier Enterprise catalog. Catalog model: 45MBDAQ18XA3. Product family: 45MBDA. 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 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1)
Equipment type: Heat Pump
Product group: Residential Heat Pump - 45MBDA

Technical snapshot

Ductless 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1) technical snapshot

Product Specs

Model: 45MBDAQ18XA3
Manufacturer Number: 45MBDAQ18XA3
Vendor Number: 45MBDAQ18XA3
Catalog Brand: Carrier®, Bryant®, Payne®
Product Family: 45MBDA
AHRI Usage: Indoor AHU
Approvals: ETL Listed; UL Listed
Blower Motor HP: 11/50
Blower Motor RPM: 1,100
Blower Motor Speeds: 3
Blower Motor Type: ECM (Electronically Commutated Motor)
Blower Motor Watts: 185
Blower Wheel Diameter: 6 1/10
Blower Wheel Width: 6 1/5
Brand: Carrier®, Bryant®, Payne®
CFM: 441.45-600.37
CFM Heating: 441.45-600.37
COP: 2.3
Color: Silver
Cooling Capacity: 18,000
Cooling Rated Capacity Btu/h: 18000
Country Of Origin: CHN
Cycle/Hertz: 60 Hz
Drain Connection Size: 5/8"
EER2: 12.5
Energy Star Rated: YES
Evaporator Coil Fins Per Inch (FPI): 20
HSPF: 11
HSPF2: 10
Heating Capacity: 8,900-22,000
Height: 8.27
Length: 26.54
Liquid Line Fitting Type: Flare
Liquid Line Size (OD): 1/4"
Metering Device: EEV - Electronic Expansion Valve
Mounting Type: Concealed Ducted
Multi Zone: YES
OPT Code: 1P45MBDAQ18XA3
Phase: Single
Prop 65: YES
Refrigerant: R-454B
Remote Control Included: YES
SEER2: 23-25
Sound Level (dBA): 32-40
Stages Cooling: Variable
Stages Heating: Variable
Suction Line Fitting Type: Flare
Suction Line Size (OD): 1/2"
Tier: Standard
Tonnage: 1.5
UPC: See Optical
Voltage: 208-230 VAC
Weight: 54.45
Width: 34.65

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 18000 Btuh Slim Ducted Heat Pump 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.

Ductless 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1) service questions

Can GreenFlow help with Carrier Ductless 18000 Btuh Slim Ducted Heat Pump Fan Coil Unit R-454B (208/230-1) service requests?

Yes. GreenFlow can help collect the right details for Carrier Ductless 18000 Btuh Slim Ducted Heat Pump 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 Ductless 18000 Btuh Slim Ducted Heat Pump 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 Ductless 18000 Btuh Slim Ducted Heat Pump 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 Ductless 18000 Btuh Slim Ducted Heat Pump 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.

Popular cities

Service Areas

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Lowell, MA

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Our Happy Customers

Daniel B.

We couldn't be happier with the AC installation by Andrei and Max! They tackled the job promptly and with incredible attention to detail, even when faced with unexpected challenges. Their professionalism shone through every step of the way. On top of their excellent workmanship, the affordable price and...

Judy B.

Andrey was very efficient, professional and on time. The team had fast response to questions. Price to do heatpump maintenance was reasonable.

Max P.

Green Flow got our AC back up and running at our condo the same day! Andrey was on time, super efficient, and with the right part on hand. The price was fair enough. Would definitely recommend them!

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

Catherine D.

Excellent work. On time, efficient, and helpful. Thank you!

Jack B.

Andrey always does a great job.