Goodman 3.5 Ton Evaporator Coil – 21" Wide Uncased With TXV | R32 (CAUTA4230C3)
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Key features
- 3.5-ton capacity, 21-inch wide uncased configuration for tight cabinet installations
- Factory-installed TXV for load-responsive refrigerant metering and compressor protection
- R-32 refrigerant compatible, a lower-GWP alternative to R-410A
- Uncased design allows field-fabricated enclosure for non-standard duct applications
- Goodman value-tier pricing, typically 15 to 25 percent below comparable Trane, Carrier, and Lennox coils
- Designed for use in matched split systems; system SEER2 rating determined by the paired outdoor unit
About this system
The Goodman CAUTA4230C3 is a 3.5-ton uncased evaporator coil built for R-32 refrigerant, sized at 21 inches wide to fit tighter air handler or furnace cabinets where a standard cased coil would not fit. The uncased design means your installer wraps and seals it on-site, which gives flexibility for non-standard duct configurations but also puts the burden of a proper vapor seal squarely on the installer’s workmanship. The factory-installed TXV (thermostatic expansion valve) is a meaningful inclusion at this price point: it meters refrigerant flow based on actual load rather than relying on a fixed orifice, which improves efficiency and protects the compressor from flooding.
R-32 is a next-generation refrigerant with a lower global warming potential than R-410A, and its adoption is accelerating as the industry moves away from older blends. If you are pairing this coil with a new outdoor unit, confirm your condensing unit is rated for R-32 before purchasing. This coil is not a standalone efficiency story since it carries no SEER2 rating on its own; the system efficiency number comes from the matched outdoor unit. This product suits homeowners replacing a failed coil in an existing uncased application, contractors building a new matched system around an R-32 condensing unit, or anyone working within a 21-inch cabinet constraint.
The CAUTA4230C3 is a workable, budget-conscious coil for installers who need R-32 compatibility in a 21-inch uncased format and are willing to do a careful field wrap and seal. Its value is real, but Goodman's documented history of evaporator coil leaks means installation quality and a thorough leak check at startup are not optional extras. Buyers who want a worry-free decade-plus of service should weigh whether the upfront savings justify the higher long-term repair risk relative to premium brands.
Overall score is the average of the five ratings above.
What we like
- Factory-installed TXV adds efficiency and compressor protection without extra cost
- R-32 compatibility keeps the system current as the industry phases out R-410A
- Uncased format works in non-standard air handler cabinets where cased coils will not fit
- Price point is typically 15 to 25 percent below comparable Trane, Carrier, and Lennox coils
- Widely available through HVAC distributors, which simplifies sourcing and replacement parts
Trade-offs
- Goodman has documented evaporator coil leak issues appearing in a meaningful share of owner reviews, making a rigorous post-install leak check essential
- Uncased design requires careful field sealing; poor workmanship is the single largest predictor of early failure across Goodman equipment
- No standalone efficiency rating; system SEER2 depends entirely on the matched outdoor unit, so budget shoppers may pair it with a low-efficiency condenser and limit the TXV's benefit
- Goodman compressors in matched systems average 10 to 14 years versus 15 to 20 years for premium brands, so total lifecycle cost can close the gap with more expensive options
What homeowners and pros say about Goodman
Homeowners who have had Goodman equipment installed rate the brand around 3.8 out of 5 on Google dealer reviews, where the most consistent praise is upfront affordability. The picture on ConsumerAffairs is rougher, sitting around 2.5 out of 5, though that platform skews toward people motivated to file complaints. The pattern that emerges across both channels is familiar: owners who get a careful installation and keep up with maintenance tend to be satisfied in the early years, while those who run into trouble often trace it back to a rushed install or a part failure after year seven or eight. For an evaporator coil specifically, the documented failure mode to know about is coil leaks, which show up in a notable portion of Goodman owner accounts and can mean refrigerant loss, reduced capacity, and a repair bill that narrows the original savings advantage.
HVAC technicians who work on Goodman equipment regularly tend to hold a pragmatic view: the equipment can perform adequately, but it rewards installers who take the time to do the field wrap correctly on uncased coils, verify the refrigerant charge precisely, and run a proper leak check before closing up. The TXV on this coil is a point in its favor among pros, since it removes some of the sensitivity to charge accuracy that fixed-orifice coils carry. The longer-term reliability concern is less about the coil in isolation and more about the matched system: Goodman compressors in complete systems tend to average 10 to 14 years, noticeably shorter than the 15 to 20 years commonly seen with Trane, Carrier, and Lennox compressors. For buyers who plan to be in the home for the long term, that gap is worth factoring into the total ownership math.
Sources: ConsumerAffairs Goodman owner reviews, AHRI Directory of Certified Product Performance, U.S. DOE appliance and equipment efficiency standards, Goodman product specification sheets.
How it compares
| Brand | Comparable model | SEER2 | Stage | Price position |
|---|---|---|---|---|
| Goodman | CAUTA4230C3 | N/A (coil only) | N/A (coil only) | Value pick |
| Carrier | Comfort Series CAPVU3621ALA (uncased, TXV) | N/A (coil only) | N/A (coil only) | 15 to 25 percent higher than Goodman |
| Trane | Coil-Only Series BAYEV037A (uncased, TXV) | N/A (coil only) | N/A (coil only) | 15 to 25 percent higher than Goodman |
| Lennox | C33 Series uncased evaporator coil (TXV included) | N/A (coil only) | N/A (coil only) | 20 to 30 percent higher than Goodman |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Does this coil work with my existing R-410A outdoor unit?
No. The CAUTA4230C3 is designed for R-32 refrigerant and is not compatible with R-410A systems. Pairing it with an R-410A condensing unit would require a full outdoor unit replacement or a conversion that most manufacturers do not support.
Why is the coil uncased, and do I need to do anything extra at installation?
Uncased means the coil ships without a factory-built enclosure, which lets it fit inside non-standard air handler or furnace cabinets. Your installer must fabricate a field enclosure, wrap it with insulation, and seal it carefully to prevent condensation and air bypass. Skipping or rushing this step is one of the most common causes of early coil problems on Goodman equipment.
What is the warranty on this coil, and do I need to register it?
Goodman typically offers a limited parts warranty on evaporator coils, with an extended term available if the product is registered within a set window after installation. Check the specific warranty documentation included with the unit, as coverage terms can vary by product line, and confirm registration requirements with your installer.
Goodman has a reputation for coil leaks. Should I be worried about this specific model?
Evaporator coil leaks are one of Goodman's documented failure modes, appearing in a meaningful share of owner reviews. The risk is real but not universal. A thorough nitrogen pressure test and refrigerant leak check immediately after installation can catch factory or install-related issues early, before refrigerant loss compounds into a costlier repair.
What outdoor unit should I pair with this coil to get a rated SEER2 number?
This coil has no standalone efficiency rating; the SEER2 number is a function of the complete matched system. You will need an R-32-compatible Goodman condensing unit that lists this coil model in its approved match table, typically found in the ARI or AHRI directory. Your distributor or installing contractor can confirm which condensing units create a certified rated combination.
Specifications
| Cooling capacity | 3.5 Ton |
| Refrigerant | R-32 |