ACiQ 4 Ton Evaporator Coil | 21" Wide Multi-Positional V-Coil w/ TXV | R454B (EVM5X49M21A)
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Key features
- 4-ton capacity with 21-inch wide cabinet fits standard air handler footprints
- Multi-positional V-coil configuration: upflow, downflow, or horizontal installation
- Factory-installed TXV for precise refrigerant metering across varying loads
- R-454B refrigerant compatible, aligning with current EPA phase-down requirements
- Designed as a matched component within the ACiQ split-system lineup
- 12-year parts warranty included with registration, no dealer markup built in
About this system
The ACiQ EVM5X49M21A is a 4-ton multi-positional V-coil evaporator coil designed to work with a matched air handler or furnace in a split-system setup. The 21-inch cabinet width fits a common range of residential air handlers, and the multi-positional design means it can be installed in upflow, downflow, or horizontal configurations, which gives installers real flexibility in tight mechanical rooms or attic installs. It comes factory-charged for R-454B, the lower-GWP refrigerant that new equipment is transitioning to as R-410A phases out under EPA regulations, so this coil is positioned for the current and near-future refrigerant landscape rather than already being behind the curve.
A factory-installed TXV (thermostatic expansion valve) is included rather than sold separately, which matters because a TXV is more precise at metering refrigerant across varying load conditions than a fixed orifice, and matching it to the coil at the factory removes one variable from the field installation. At 4 tons this coil is suited to homes roughly in the 2,000 to 2,600 square foot range depending on climate zone, insulation quality, and local heat gain. It is intended to pair with an ACiQ or compatible condensing unit, and system SEER2 ratings will depend on that outdoor unit pairing, not on this coil alone. Buyers should confirm the matched system’s ARI-certified combination rating before purchasing if efficiency ratings matter for rebates or energy codes.
The ACiQ EVM5X49M21A is a straightforward, reasonably priced evaporator coil that checks the important boxes: factory TXV, R-454B compatibility, and multi-positional flexibility. Its value case is real, but buyers are accepting thinner long-term reliability data and an undisclosed manufacturer in exchange for the lower price point. For budget-conscious homeowners working with a trusted independent installer, it is a defensible choice; those who want a fully traceable brand history may prefer to pay more for a Carrier or Trane coil.
Overall score is the average of the five ratings above.
What we like
- Competitive price versus name-brand coils of equivalent tonnage and configuration
- Factory-installed TXV eliminates a common field-installation variable
- R-454B compatibility future-proofs the system against ongoing R-410A phase-out
- Multi-positional design reduces the need for position-specific coil selection
- 12-year parts warranty with registration is longer than many budget-tier competitors
Trade-offs
- Manufacturer is not publicly disclosed, complicating parts cross-referencing and service history lookups
- Long-term reliability data is limited given the brand's relatively short market history
- Consumer Reports has not yet ranked ACiQ due to insufficient long-term field data
- No factory dealer network means warranty service depends entirely on finding a willing independent contractor
What homeowners and pros say about ACiQ
Early owner and installer feedback on ACiQ equipment, including coil components, tends to highlight the brand’s pricing transparency and the absence of dealer markup as genuine advantages, particularly for independent contractors who buy direct. The 12-year warranty is frequently cited as a positive differentiator. However, the conversation consistently returns to the same unresolved concern: because ACiQ does not disclose its manufacturing source, an installer who runs into a parts or service issue cannot easily cross-reference components against a known parent brand’s catalog. Consumer Reports has not yet assigned ACiQ a reliability ranking, noting insufficient long-term field data, which is not a condemnation but is a real gap compared to brands with decades of independent scoring behind them.
On the failure mode side, the concerns most relevant to an evaporator coil like this one are coil leaks and long-term refrigerant integrity, both of which take years to surface in real-world data. The brand’s newer market presence means that kind of longitudinal record simply does not exist yet, and that is the honest trade-off a buyer accepts. What does exist is largely positive early sentiment around build quality and responsive customer support when issues have come up. For a replacement coil installation where cost is a real constraint and the buyer has a reliable independent contractor, ACiQ occupies a reasonable position in the market, but it does so on the basis of promise and early returns rather than an established long-term track record.
Sources: Consumer Reports heat pump ratings, HVACDirect on the ACiQ brand, AHRI Directory of Certified Product Performance, U.S. DOE appliance and equipment efficiency standards.
How it compares
| Brand | Comparable model | SEER2 | Stage | Price position |
|---|---|---|---|---|
| ACiQ | EVM5X49M21A | System-dependent (coil only) | N/A (evaporator coil) | Value pick |
| Carrier | Comfort Series CAPFA4924A6 | System-dependent (coil only) | N/A (evaporator coil) | Moderately higher than ACiQ through dealer channel |
| Trane | Enhance Series RAUL48A | System-dependent (coil only) | N/A (evaporator coil) | Higher than ACiQ, typically sold through Trane dealers with installation |
| Goodman | CAPF4961C6 | System-dependent (coil only) | N/A (evaporator coil) | Comparable to ACiQ, widely available through distribution |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Does the EVM5X49M21A include the TXV, or do I have to buy it separately?
The TXV is factory-installed on this coil, so you do not need to purchase or source one separately. This simplifies installation and ensures the valve is matched to the coil from the start.
Will this coil work with my existing R-410A outdoor unit?
No. This coil is designed and factory-configured for R-454B refrigerant. Mixing refrigerant types in a system is not safe or code-compliant, so you would need an R-454B compatible condensing unit to pair with it. If your existing outdoor unit is R-410A, you should source an R-410A coil instead.
What air handler brands will this coil fit?
The 21-inch cabinet width and multi-positional design are intended to align with ACiQ's own air handler lineup, but many installers have reported fitment with other brands that share the same cabinet footprint. Your installer should verify cabinet dimensions and refrigerant connections before ordering, since coil compatibility is not guaranteed across all brands.
How do I get warranty service if something goes wrong, since ACiQ sells direct and has no dealer network?
ACiQ's 12-year parts warranty requires registration and is supported through independent HVAC contractors rather than a factory dealer network. In practice, you will need to find a licensed local contractor willing to handle the warranty claim, which adds a step compared to brands with established dealer relationships. ACiQ's support team can assist with parts, but locating labor is your responsibility.
What system SEER2 rating can I expect with this coil?
Evaporator coils do not carry a SEER2 rating on their own. The efficiency rating only applies to the matched system, meaning the specific combination of this coil, the air handler or furnace, and the outdoor condensing unit tested together. You need to verify the ARI-certified combination rating for your specific paired equipment before assuming a particular SEER2 number, which is especially important if you are pursuing utility rebates or meeting local energy codes.
Specifications
| Cooling capacity | 4 Ton |
| Refrigerant | R-454B |
| Model | EVM5X49M21A |