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Carrier 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) service and support

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Carrier Residential Carrier Catalog Product - CAAVU Carrier Catalog Product Repair, maintenance, and replacement planning
Carrier 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) product image

Product service snapshot

Carrier 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) service details

4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) is a Carrier®, Bryant®, Payne® carrier catalog product record from the Carrier Enterprise catalog. Catalog model: CAAVU4821AMA. Product family: CAAVU. Green Flow Solution uses this page for residential model identification, service planning, maintenance conversations, repair diagnostics, and replacement matching.

  • Brand: Carrier
  • Model or series: 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow)
  • Equipment type: Carrier Catalog Product
  • Product group: Residential Carrier Catalog Product - CAAVU

Technical snapshot

4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) technical snapshot

Product Specs

  • Model: CAAVU4821AMA
  • Manufacturer Number: CAAVU4821AMA
  • Vendor Number: CAAVU4821AMA
  • Catalog Brand: Carrier®, Bryant®, Payne®
  • Product Family: CAAVU
  • AHRI Usage: Indoor Coil
  • Air Flow Direction: Upflow / Downflow
  • Brand: Carrier®, Bryant®, Payne®
  • Cased: NO
  • Coil Fin Material: Aluminum
  • Coil Pipe Material: Aluminum
  • Coil Shape Designation: A-Coil
  • Coil Type: Evaporator
  • Cooling Capacity: 48,000
  • Cooling Rated Capacity Btu/h: 48000
  • Corrosion Protected Coil: YES
  • Country Of Origin: MEX
  • Height: 25.3125
  • Length: 20.0625
  • Liquid Line Size (OD): 3/8 in
  • Metering Device: TXV/TEV - Thermostatic Expansion Valve
  • OPT Code: 1PCAAVU4821AMA
  • Prop 65: YES
  • Refrigerant: R-454B
  • Suction Line Size (OD): 7/8 inch
  • Tonnage: 4
  • UPC: See Optical
  • Weight: 43
  • Width: 21

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 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) requests

1

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.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) service questions

Can GreenFlow help with Carrier 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) service requests?

Yes. GreenFlow can help collect the right details for Carrier 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) service requests, including the model, symptoms, equipment age, building type, access notes, photos, and timing.

What symptoms should I mention for 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow)?

Helpful symptoms include no heat, no cooling, weak airflow, error codes, leaks, short cycling, unusual noise, thermostat behavior, and whether the issue is urgent or planned maintenance.

Is 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) used for residential or commercial properties?

Carrier Catalog Product requests may come from homes, condos, multi-unit properties, offices, managed buildings, and light-commercial spaces depending on the equipment type and application.

What helps schedule 4 Ton Evaporator A-Coil Uncased Vertical 21" Wide R-454B (Upflow/Downflow) 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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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

Andrea W.

Andrey was quick, efficient, and professional. He was also very informative about the condition of the heat pump and gave options for repair/replacement. His cost estimates are reasonable. Highly recommend.

Dev W.

I had a breakdown of my cooling system and Hanna at Green Flow responded to my request right away. They scheduled me same day. The team at Green Flow was easy to communicate with over phone and text. They kept me updated on delays on arrival of the...

Paul R.

Was able to get them to come immediately to fix our heaters since it stopped working and it was very cold outside. I needed a second opinion in the accurately diagnosed and resolved the issue within 15 minutes and restored heat. He provided clear diagnosis that made way...

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They are very professional and reliable.

Connie F.

I needed a thermostat installed. I called one day they were there the next day. Installed the thermostat and made sure it was working before they left. Came back the next day because no heat was coming out the vents and fixed that issue. No problems since. Thanks...

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