Heat Pump

Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B service and support

Carrier Residential Heat Pump - 50NHB Heat Pump Repair, maintenance, and replacement planning

Product service snapshot

Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B service details

Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B is a Carrier® heat pump record from the Carrier Enterprise catalog. Catalog model: 50NHB048---3. Product family: 50NHB. Green Flow Solution uses this page for residential model identification, service planning, maintenance conversations, repair diagnostics, and replacement matching.

Brand: Carrier
Model or series: Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B
Equipment type: Heat Pump
Product group: Residential Heat Pump - 50NHB

Technical snapshot

Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B technical snapshot

Product Specs

Model: 50NHB048---3
Manufacturer Number: 50NHB048---3
Vendor Number: 50NHB048---3
Catalog Brand: Carrier®
Product Family: 50NHB
AHRI Usage: Packaged
Air Flow Direction: Horizontal
Approvals: UL Listed
Blower Motor HP: 1/2
Blower Motor Speeds: Variable
Blower Motor Type: ECM (Electronically Commutated Motor)
Blower Wheel Diameter: 12"
Blower Wheel Width: 9"
Brand: Carrier®
CFM: 3,100
CFM Heating: 1,400-1,800
COP: 2.2-3.3
Color: Gray
Compressor Type: Scroll
Condenser Coil Fins Per Inch (FPI): 20
Condenser Coil Metering Device: TXV/TEV - Thermostatic Expansion Valve
Condenser Fan Blade Diameter: 20
Condenser Fan CFM: 3100
Condenser Fan Motor Qty: 1
Condenser Motor HP: 1/4
Condenser Motor RPM: 1,100
Condenser Motor Speeds: 1
Condenser Motor Type: PSC (Permanent Split Capacitor)
Cooling Capacity: 48,000
Country Of Origin: MEX
Cycle/Hertz: 60 Hz
Drain Connection Size: 3/4"
Drive Type: Direct
Energy Star Rated: NO
Evaporator Coil Fins Per Inch (FPI): 15
Evaporator Coil Metering Device: TXV/TEV - Thermostatic Expansion Valve
Heating Capacity: 48,000
Height: 42.13
Length: 51
Locked Rotor Amps (LRA): 102
Maximum Overcurrent Protection (MOCP): 60
OPT Code: 1P50NHB048---3
Phase: Single
Prop 65: YES
Rated Load Amps (RLA): 23.8
Refrigerant: R-454B
Return Air Filter Size (RA) In Inches (W X H X D): 24 x 36 x 1
Sound Level (dBA): 78
Stages Cooling: 1
Stages Heating: 1
Tier: Comfort™
Tonnage: 4
UPC: See Optical
Voltage: 208-230 VAC
Weight: 407
Width: 32

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 Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B 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.

Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B service questions

Can GreenFlow help with Carrier Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B service requests?

Yes. GreenFlow can help collect the right details for Carrier Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B service requests, including the model, symptoms, equipment age, building type, access notes, photos, and timing.

What symptoms should I mention for Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B?

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 Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B 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 Carrier® Comfort™ - 4 Ton Residential Packaged Heat Pump Unit R-454B 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

Boston, MA

Worcester, MA

Lowell, MA

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Our Happy Customers

Truc S.

I was frustrating about my heat system, they were very responsive and efficient. Andrey show up at my house after 30 mins from my call and on Sunday. He very acknowledge what is he doing. Thank you so much

Henry H.

Replace batteries in thermostat, checked furnace

Anna G.

They quickly identified the issue with the heating system and fixed it efficiently. He explained everything clearly and made sure I understood what was going on. Very professional and reliable, extremely satisfied with the service.

Megan S.

Great service - my air conditioning failed after hours on a Sunday. I could schedule the appointment online for Monday morning and the technician quickly diagnosed the problem and fixed it. Super helpful- will use them again!

Jennifer Q.

Andrey is a great technician. He was incredibly respectful of our home, and he worked efficiently to complete the service.Green Flow Solution scheduled us easily. I like that they text a reminder for service on the day scheduled. I especially appreciate that I didn't have to wait days...

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.