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Gibson / Contractor equipment reference

Gibson WSA4BD Air Conditioners

Build a practical cooling quote around three carried Gibson WSA4BD R-454B models. Compare electrical requirements and cabinet dimensions, then check the manufacturer-listed indoor-coil and performance references.

  • R-454B
  • Single-stage scroll
  • 2-,2.5- and3-ton references
  • 208/230 V single phase
View model specificationsOpen literature
Gibson WSA4BD representative manufacturer product image
Gibson WSA4BD representative manufacturer family image. Use the full-model dimensional drawing to plan clearances and installation space.

Plan the equipment around the job

Start with a clear outdoor-and-indoor equipment list.

WSA4BD is a single-stage scroll air-conditioner family. Selecting the outdoor nominal size is the beginning of the job; the coil, metering arrangement, airflow and refrigerant application complete the system plan.

01 / Indoor selection

Verify the exact coil and metering

The specification sheet lists designated tested combinations. Confirm the actual coil suffix, approved metering and current certified record for the equipment you intend to supply.

02 / Cabinet and circuit

Compare each capacity explicitly

The selected2-ton unit has a smaller footprint than the2.5- and3-ton references. Circuit ampacity and maximum fuse values also change by model; keep those details in the quote.

03 / Piping scope

Use the line-length table

Manufacturer suction-line guidance changes with model and run length and includes reducer notes. Review that table and the installation instructions for the actual piping route.

The numbers contractors need

WSA4BD model specifications

Compare the listed full models, or select one for a focused view.

3 model references · confirm current sourcing and availability with Mar-Hy.

Gibson WSA4BD model specifications
ReferenceWSA4BD5M1SN24K2-ton nominalWSA4BD5M1SN30K2.5-ton nominalWSA4BD5M1SN36K3-ton nominal
Full outdoor modelWSA4BD5M1SN24KWSA4BD5M1SN30KWSA4BD5M1SN36K
Nominal size: tons22.53
RefrigerantR-454BR-454BR-454B
Compressor operationSingle-stage scrollSingle-stage scrollSingle-stage scroll
Supply: V / phase / Hz208/230 / 1 / 60208/230 / 1 / 60208/230 / 1 / 60
Minimum circuit ampacity: A13.216.818.3
Maximum delay fuse: A202530
Cabinet height: in.272727
Cabinet width: in.22.753131
Cabinet depth: in.22.753131
Approximate shipping weight: lb130161168
Manufacturer sound rating: dBA727379

Source: WSA4BD007G-1024: nomenclature/dimensions p.2, electrical data p.3, designated combinations p.4. Reviewed November 11, 2026.

  • Use the full model, electrical phase and equipment nameplate. MCA and overcurrent values are manufacturer references; installation and conductor/protection selection must follow the applicable manufacturer instructions and requirements.
  • The listed models are equipment references supported by dated carried-model records, not a live inventory feed. Confirm current availability and contractor pricing before ordering.
  • The source labels the protective-device row “Delay Fuse Maximum” and allows HACR-type circuit breakers. Use the full manufacturer instructions and actual nameplate for the installation.
  • Cabinet dimensions are H×W×D, and the weight shown is approximate shipping weight, not operating weight.
  • The listed ratings use the specified C75BHM coil and a time-delay relay. A different coil, including a C75BHMX model, requires its own verified combination.

Keep the manufacturer’s designated combination intact.

Review the manufacturer’s listed indoor-coil combinations, cooling capacity and efficiency below. Confirm the specified coil, time-delay relay and current AHRI certificate when selecting the complete system.

Manufacturer-listed system references · cited brochure pairs
ReferenceWSA4BD5M1SN24K2-ton nominalWSA4BD5M1SN30K2.5-ton nominalWSA4BD5M1SN36K3-ton nominal
Manufacturer-listed indoor coilC75BHM02430C-AC75BHM02430C-AC75BHM03642C-B
Listed pair cooling capacity: Btu/h23,00028,60034,800
Listed pair SEER213.413.413.4
Listed pair EER211.011.011.0
Listed pair indoor airflow: CFM7008751,050

Search by the full outdoor model, then verify every listed component and the current official certificate. A matching brand or nominal size is not an approved system.

Find WSA4BD AHRI references

Read it. Save it. Bring it to the job.

WSA4BD equipment literature

Open the manufacturer reference you need. Documents load when selected.

Customer product guideGibson A2L lineup, including WSA4BD
4 pages · 1.7 MB · PDFOpen customer product guide →Technical specificationsFull-model electrical, cabinet and performance tables
8 pages · 1.1 MB · PDFOpen technical specifications →Installation instructionsWSA4BD5M R-454B installation reference
16 pages · 2.3 MB · PDFOpen installation instructions →Quick reference dataSA4BD5M line and charging reference
4 pages · 0.1 MB · PDFOpen quick reference data →

Search WSA4BD references in the Mar-Hy document library

Documents are linked directly and open only when selected. Check the model, revision and complete system scope before applying technical values.

Get a useful quote on the first conversation

Bring the complete cooling-system request.

  1. Full outdoor model, including electrical phase and factory option suffix.
  2. Indoor coil or air-handler model, refrigerant/metering arrangement and required controls.
  3. Cooling load, design conditions, airflow and duct-system requirements.
  4. Cabinet location, service and airflow clearances, piping route and electrical supply.
  5. Required accessories, job schedule and the complete equipment list for contractor pricing.
Request a WSA4BD equipment quoteCall 503-353-0100

Selection questions

Does the family efficiency apply to every indoor combination?

Use the current certified record for the exact equipment package. The indoor unit, airflow and controls affect the listed capacity and efficiency.

Does a model listed here mean it is in stock today?

Confirm current sourcing, availability and contractor pricing through the shop or Mar-Hy before committing to the job.

Find it at Mar-Hy

Price the equipment. Plan the whole job.

Use the model lookup below, or ask our team to confirm sourcing, current contractor pricing and availability. Mar-Hy serves contractors in Oregon and Southwest Washington from Milwaukie.

Prepared for HVAC contractors and trade purchasers. Match the complete model, revision, installation and system combination. This reference is not a live stock feed or a guarantee of design suitability, warranty eligibility or incentive qualification. Follow the applicable manufacturer instructions for the actual equipment.