Heat Pump

Carrier Ductless 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1) service and support

Carrier Residential Heat Pump - 37MTRAQ Heat Pump Repair, maintenance, and replacement planning

Product service snapshot

Carrier Ductless 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1) service details

Ductless 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1) is a Carrier®, Bryant® heat pump record from the Carrier Enterprise catalog. Catalog model: 37MTRAQ18CA3. Product family: 37MTRAQ. 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 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1)
Equipment type: Heat Pump
Product group: Residential Heat Pump - 37MTRAQ

Technical snapshot

Ductless 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1) technical snapshot

Product Specs

Model: 37MTRAQ18CA3
Manufacturer Number: 37MTRAQ18CA3
Vendor Number: 37MTRAQ18CA3
Catalog Brand: Carrier®, Bryant®
Product Family: 37MTRAQ
AHRI Usage: Outdoor
Brand: Carrier®, Bryant®
CFM: 1,764
Compressor Type: Rotary
Condenser Coil Fins Per Inch (FPI): 20
Condenser Fan CFM: 1765
Condenser Motor HP: 0.08 HP
Condenser Motor Speeds: 3
Condenser Motor Type: ECM (Electronically Commutated Motor)
Cooling Rated Capacity Btu/h: 18000
Country Of Origin: CHN
Cycle/Hertz: 60 Hz
EER2: 11.7
Energy Star Rated: YES
Heating Capacity @ 5 Deg: 18000
Height: 26.5
High Heat: NO
Length: 13.4
Liquid Line Size (OD): 6.35 mm
Maximum Overcurrent Protection (MOCP): 20
Maximum Piping Height: 49.21 ft
Maximum Piping Length: 98.4 ft
Metering Device: EEV - Electronic Expansion Valve
Number Of HVAC Zones: 3
OPT Code: 1P37MTRAQ18CA3
Phase: Single
Prop 65: YES
Rated Current Amps (RCA): 6.9
Refrigerant: R-454B
Refrigerant Charge: 3.86 lb
SEER2: 18.5
Stages Cooling: Variable
Stages Heating: Variable
Suction Line Size (OD): 9.52 mm
Tonnage: 1.5
UPC: See Optical
Voltage: 230 VAC
Weight: 100.5
Width: 35

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 18,000 Btuh Heat Pump Multi-Zone Outdoor 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 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1) service questions

Can GreenFlow help with Carrier Ductless 18,000 Btuh Heat Pump Multi-Zone Outdoor Unit R-454B (208/230-1) service requests?

Yes. GreenFlow can help collect the right details for Carrier Ductless 18,000 Btuh Heat Pump Multi-Zone Outdoor 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 18,000 Btuh Heat Pump Multi-Zone Outdoor 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 18,000 Btuh Heat Pump Multi-Zone Outdoor 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 18,000 Btuh Heat Pump Multi-Zone Outdoor 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

Ted O.

Quick and professional service. Would give more stars if possible. Just amazing.

Murali S.

HVAC technician was punctual, followed up well, completed quick repairs, ensured the issue was resolved, and provided helpful recommendations.

Tom T.

Fantastic job by Green Flow. Andrey, Andrei and Yuri were punctual, very neat, capable, and meticulous in replacing two complete HVAC systems and ductwork repairs in our home. They will now be our go to service for all our HVAC needs going forward.

Nicholas M.

I called Green Flow Solutions in a hurry to diagnose and fix an AC unit in a commercial condo unit. They responded quickly, arrived urgently and performed an excellent job on the repair needed. Communication 10/10, professionalism 10/10 and quality 10/10. I will be recommending Green Flow Solutions...

Johnson M.

Andrew is professional and on time on the schedule. I got the same day appointment scheduled, you do not know how hard it is to live in summer Boston without AC working properly. He identified issue very quick and got it fixed like in 10 mins. Gave me...

Tarikh C.

Max quickly identified the source of the problem with our condensing unit and fixed it. He was very knowledgeable and helpful at explaining what he was observing. He also stuck around to check for other potential issues and gave us advice for future maintenance. He's also very professional...