2.5 - 3 Ton Goodman R32 Horizontal Slab Coil, CSCT3612L3
For homes that have outgrown a 2 ton system but don't need a 4 or 5 ton setup, the Goodman CSCT3612L3 delivers 2½ to 3 tons of R-32 cooling coil capacity in a horizontal slab format. It uses Goodman's largest L-size 39½" cabinet with a 30" x 21" plenum opening, a factory TXV, and a built-in R-32 sensor, giving installers a wide airflow window and dependable condensate handling for attic and crawlspace furnace applications. Explore the full range of Goodman horizontal slab coils to compare sizes.
Is a 2.5 - 3 Ton Horizontal Slab Coil the Right Size?
The CSCT3612L3 is rated for 2½–3 tons, or roughly 30,000–36,000 BTU/h of cooling, the sweet spot for many larger family homes. Because it shares the full-size L cabinet, the coil supports a broad airflow range from 800 to 2,200 SCFM in Goodman's published data, giving you headroom to set blower speed precisely for your outdoor unit.
Choosing between 2½ and 3 tons comes down to your heat load, ductwork capacity, and how your home handles humidity. Oversizing can shorten run times and reduce moisture removal, while undersizing can leave rooms warm on peak days. A room-by-room load calculation is the most reliable way to settle it.
Ideal for: Larger single-family homes and horizontal furnace systems that need 2½ or 3 tons of R-32 cooling with a full-width 39½" cabinet.
Need more capacity? Step up to the 4 - 5 Ton Goodman R32 Horizontal Slab Coil, CSCT6012L3, which uses the same cabinet footprint for 4 and 5 ton R-32 systems.
Recommended tonnage applications are general guidelines only. Actual system requirements depend on a proper load calculation, duct design, blower airflow, and the approved outdoor unit match. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Indoor Coil | CSCT3612L3 — Cased Horizontal Slab Indoor Coil |
|---|---|
| Nominal Capacity | 2½ - 3 Tons |
| Refrigerant | R-32 |
| Expansion Device | Factory-Installed TXV |
| Cabinet Dimensions (W x D x H) | 39½" x 12" x 25" |
| Plenum Opening (W x H) | 30" x 21" |
| Line Connections | 3/8" Liquid, 7/8" Suction |
| Ship Weight | 53 lbs |
The CSCT3612L3 steps into the L-size cabinet with a 34" x 24" coil face, a 30" wide plenum opening, and 7/8" suction piping. At 53 pounds it remains manageable for a two-person attic install, and the factory-installed TXV and R-32 sensor reduce field setup time.
Coil & Cabinet Features
CSCT3612L3 Performance Features
- Large 34" x 24" coil face in the full-size L cabinet
- Wide published airflow range of 800 to 2,200 SCFM
- Thermal expansion valve installed at the factory for cooling applications
- Refrigerant circuits and manifolds optimized for R-32
- Corrosion-conscious all-aluminum coil design
- Long-life R-32 refrigerant leak sensor
- 7/8" suction and 3/8" liquid line connections
- Consistent copper suction stub length for clean field brazing
- AHRI certified, ETL listed
- Zoning compatible with Goodman R-32 zoning kit 0230K00007
Drain Pan, Cabinet & Install Details
- 3/4" female NPT primary and secondary drain ports (hand tighten)
- Low water-retention thermoplastic drain pan resists rust
- UV-resistant, DecaBDE-free drain pan material
- Removable drain pan rails for easier coil service
- Foil-faced insulation covers the internal casing
- Galvanized steel cabinet with leather grain-embossed finish
- Reversible left or right installation, factory set for left
- Requires a minimum 18" transition from furnace outlet
- Designed for indoor installation only
- Backed by a 10-Year Parts Limited Warranty with timely online registration
Specifications & Manuals
Documentation covers CSCT cabinet and plenum dimensions, wet and dry coil pressure drop by airflow, R-32 accessory kits, and step-by-step installation including drain trapping, sealing, and start-up checks.
Frequently Asked Questions
Is the CSCT3612L3 rated for 2.5 ton or 3 ton systems?
Both. Goodman lists a nominal capacity of 2½ to 3 tons for the CSCT3612L3 when matched with an approved, AHRI-listed R-32 outdoor unit.
Does the CSCT3612L3 use the same cabinet as the CSCT6012L3?
Yes. Both share the 39½" L-size cabinet, 30" x 21" plenum opening, 34" x 24" coil face, and 3/8" x 7/8" connections. The CSCT3612L3 is rated for 2½–3 tons and ships at 53 lbs, while the CSCT6012L3 covers 4–5 tons at 58 lbs.
What warranty comes with the CSCT3612L3?
Goodman offers a 10-Year Parts Limited Warranty when the product is registered online within 60 days of installation. Registration requirements and coverage vary in some states. See Goodman's complete warranty terms.
Can the CSCT3612L3 be used with an oil furnace?
No. Goodman states these coils should not be used on oil furnaces or anywhere drain pan temperatures may exceed 300°F unless the factory drain pan is replaced with a high-temperature drain pan.
Can the CSCT3612L3 be used in a zoned system?
Yes, with the Goodman R-32 Zoning Accessory Kit (0230K00007), which is listed as compatible with CSCT models.
Does the CSCT3612L3 include a secondary drain connection?
Yes. It has both primary and secondary 3/4" female NPT drain connections, which should be hand tightened. Keep the condensate line draining freely with coil cleaner, condensate pumps, and algae treatment.
CSCT Technical Specifications
CSCT Installation Instructions
