Find the right 1.5-ton central air conditioning setup with a C-Cabinet evaporator coil designed for modern efficiency and refrigerants. This guide highlights five compatible options, who they’re best for, and practical buying considerations. Ideal buyers include homeowners replacing a single-room or small-to-midsize home system, contractors matching a complete residential split system, and anyone prioritizing R-454B refrigerant compatibility and 14.3 SEER2 efficiency.
| Product | Best For | Key Benefit |
|---|---|---|
| 1.5–3 Ton R-454B C-Cabinet Cased Evaporator Coil – Oxbox by Trane | Homeowners upgrading to next-gen refrigerants | Flexible tonnage 1.5–3.0, R-454B ready |
| C-Cabinet Cased Evaporator Coil – 1.5–3 Ton, R-454B Compatible (Oxbox by Trane) | Residential single-zone updates | Durable C-cabinet, compatible with 1.5–3 ton systems |
| 1.5 Ton AC System C-Cabinet Cased Coil 14.3 SEER2 Oxbox by Trane | New complete system replacements | Complete outdoor unit + coil, 14.3 SEER2 |
| 1.5 Ton Central Air Conditioner System with C-Cabinet Cased Evaporator Coil – 14.3 SEER2 HVAC Replacement System | Residential installations needing efficiency | Matched coil and TXV kit, efficiency |
| 1.5 Ton Central Air Conditioner System with C-Cabinet Evaporator Coil – 14.3 SEER2 (Oxbox by Trane) | Comprehensive split-system replacements | All-aluminum coil, reliable performance |
1.5–3 Ton R-454B C-Cabinet Cased Evaporator Coil – Oxbox by Trane

- Features: Flexible tonnage range supports 1.5 to 3.0 ton, R-454B refrigerant ready, durable C-cabinet design.
Best for: Homeowners replacing an evaporator coil in a 1.5–3 ton system seeking future refrigerant compatibility and a robust cabinet. This coil is designed to fit standard residential installations with an emphasis on flexibility and updated refrigerant support. Caution: Verify compatibility with existing outdoor equipment and ductwork to ensure proper airflow and fit.
C-Cabinet Cased Evaporator Coil – 1.5–3 Ton, R-454B Compatible (Oxbox by Trane)

- Features: Compatible with 1.5–3 ton HVAC systems, R-454B ready, durable C-cabinet case.
Best for: Those upgrading to a next-gen refrigerant while preserving a standard residential coil footprint. Choose this if you need a straightforward coil upgrade without changing the outdoor unit. Caution: Check existing TXV or metering device compatibility in your system.
1.5 Ton AC System C-Cabinet Cased Coil 14.3 SEER2 Oxbox by Trane

- Features: Complete cooling system with 1.5 Ton outdoor unit and matched C-Cabinet coil, 14.3 SEER2, R-454B refrigerant.
Best for: Homeowners replacing the full split system with a modern efficiency standard. Choose this when you want an integrated package that pairs a compact outdoor unit with a compatible indoor coil. Caution: Ensure installation space supports the outdoor cabinet footprint and duct connections.
1.5 Ton Central AC w/C-Cabinet Coil & TXV Kit, 14.3 SEER2 Oxbox

- Features: Complete cooling system includes outdoor unit, C-Cabinet coil, and TXV kit, 14.3 SEER2, R-454B refrigerant.
Best for: Contractors or homeowners seeking a turnkey replacement that includes a fixed metering device and ready-to-install configuration. Caution: The fixed metering device may limit refrigerant- or load-adjustment flexibility in unusual duct layouts.
1.5–3.5 Ton R-454B C-Cabinet Cased Evaporator Coil – Oxbox by Trane

- Features: Universal C-cabinet coil design for 1.5–3.5 ton systems, R-454B ready, improved airflow and performance.
Best for: Homeowners or installers needing a flexible coil that covers a wider tonnage range to accommodate upgrades or partial system changes. Caution: The broader range may require precise matching to avoid airflow bottlenecks in smaller ducts.
1.5 Ton Central Air Conditioner System with C-Cabinet Cased Evaporator Coil – 14.3 SEER2 HVAC Replacement System (Oxbox by Trane)

- Features: Complete cooling system including outdoor unit and matched coil, 14.3 SEER2, R-454B refrigerant, all-aluminum coil.
Best for: Those replacing a full split-system with an emphasis on modern efficiency and durable coil construction. Caution: Verify ductwork and drain connections align with the dual-drain setup described by the kit.
1.5 Ton AC System C-Cabinet Evaporator Coil 14.3 SEER2 Oxbox by Trane

- Features: Complete cooling system with 1.5 ton outdoor unit, matched coil, energy-efficient 14.3 SEER2, R-454B refrigerant, premium all-aluminum coil.
Best for: Complete central air replacements that want the Trane Oxbox reliability with an all-aluminum coil. Caution: Ensure compatibility with existing outdoor cabinet dimensions and duct transitions.
Buying Guide
What to consider when choosing a 1.5 ton A/C with a C-Cabinet coil
- System type: Decide between just upgrading the evaporator coil or selecting a full system package (outdoor unit plus coil) for a seamless installation.
- Refrigerant compatibility: All options listed support R-454B refrigerant, aligning with modern standards and environmental considerations.
- SEER2 rating: Higher SEER2 values improve energy efficiency and can reduce operating costs over time. Consider your climate and electricity pricing when weighing efficiency vs. upfront cost.
- Coil design: All-aluminum plate-fin coils offer corrosion resistance and durability, while C-cabinet construction supports standard residential setups.
- Installation fit: Verify tonnage range, cabinet dimensions, ductwork, and connections to ensure proper airflow and compatibility with existing equipment.
- Metering device: Some kits include TXV or FCCV; understand how it affects refrigerant charge rules and future service needs.
- Warranty and support: Depending on the vendor, installation support and long-term service considerations may influence total cost of ownership.
FAQ
- What does 14.3 SEER2 mean for my 1.5 ton system?
Answer: It indicates cooling efficiency under current standards; higher efficiency often reduces energy use over time, especially in hot climates. - Is R-454B compatible with all houses?
Answer: It is designed for modern systems; check your existing outdoor unit and refrigerant lines for compatibility. - Do I need a TXV kit with these coils?
Answer: Some packages include a TXV kit; others use fixed metering devices. Your installer will verify the correct option for proper refrigerant flow. - Can I replace only the coil, or should I replace the whole system?
Answer: If the outdoor unit is older or inefficient, replacing both the outdoor unit and coil can maximize performance and efficiency. - Will these coils fit my ductwork?
Answer: Most are designed for standard residential ducts, but verify cabinet size and airflow path with your installer. - Are all these products suitable for upflow, downflow, and horizontal installations?
Answer: Yes, several options list flexible installation orientations to match your home layout.