ACiQ 3.5 Ton Evaporator Coil | 21" Wide Multi-Positional V-Coil w/ TXV | R454B (EVM5X44M21A)
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Key features
- 3.5-ton capacity in a 21-inch wide cabinet for mid-size residential split systems
- Multi-positional V-coil design supports upflow, downflow, and horizontal installation
- Factory-installed TXV for active refrigerant metering and improved system efficiency
- R-454B refrigerant compatible, meeting current low-GWP regulatory requirements
- Designed as a direct-fit component for ACiQ and compatible split-system setups
- Backed by ACiQ's 12-year parts warranty with no dealer markup built into the price
About this system
The ACiQ EVM5X44M21A is a 3.5-ton multi-positional V-coil evaporator designed to work with R-454B refrigerant, the low-GWP replacement that newer split systems are transitioning to as the industry moves away from R-410A. The 21-inch cabinet width fits a specific range of air handlers and furnaces, and the multi-position design means it can be installed upflow, downflow, or horizontal depending on your equipment closet or utility room configuration. The included TXV (thermostatic expansion valve) is not an add-on here; it is built in, which matters because a TXV actively meters refrigerant flow to match the load, improving efficiency and protecting the compressor compared to a fixed orifice setup.
This coil is a replacement or new-installation component, not a standalone system, so it needs to be matched to a compatible outdoor condensing unit and air handler or furnace. Because it is rated for R-454B, it should be paired only with outdoor equipment that also runs R-454B; mixing refrigerant types or cross-matching with an older R-410A condenser is not compatible and will void any warranty. The 3.5-ton capacity suits homes roughly in the 1,600 to 2,200 square foot range depending on climate, insulation, and load calculations, though a Manual J calculation by your installer is the right way to confirm sizing. Buyers who are replacing a failed coil in an existing system or building out a new split system on a budget will find this coil priced well below equivalent coils from Carrier, Trane, or Lennox without obvious cuts to the core hardware.
The ACiQ EVM5X44M21A delivers a well-specified evaporator coil at a price that undercuts name-brand equivalents, with a built-in TXV and R-454B compatibility that are genuinely useful, not marketing additions. The main trade-offs are the thin long-term reliability record that comes with any newer brand and the added friction of sourcing service through independent contractors rather than a dealer network. For a cost-conscious buyer who has a trusted HVAC contractor lined up, this coil is a credible option; for someone who wants the full dealer-support ecosystem, a name brand is the safer choice.
Overall score is the average of the five ratings above.
What we like
- Built-in TXV included at no extra cost, improving efficiency and compressor protection versus fixed-orifice coils
- R-454B ready, so the system is compatible with the current generation of condensing units without a refrigerant mismatch
- Multi-position flexibility reduces installation constraints across different equipment room layouts
- 12-year parts warranty is strong for the price tier and comes without dealer markup inflating the purchase price
- Price lands meaningfully below comparable coils from Carrier, Trane, and Lennox for the same tonnage and configuration
Trade-offs
- Long-term coil reliability is unverified because the ACiQ brand is new enough that independent failure-rate data does not yet exist
- The undisclosed manufacturer makes cross-referencing parts, service bulletins, and failure history harder for technicians used to name brands
- No dealer network means warranty service depends entirely on finding an independent contractor willing to work with the brand
- R-454B is a newer refrigerant and some independent technicians may have limited hands-on experience handling it
What homeowners and pros say about ACiQ
Early owner feedback on ACiQ equipment trends positive on quiet operation and responsive customer support, which is consistent with what the brand’s direct-sale model is designed to deliver. Consumer Reports has not yet assigned ACiQ a reliability score because the brand is too new to have generated the long-term failure-rate data the organization requires, and that absence of a track record is the most honest caveat to carry into a purchase decision. For an evaporator coil specifically, the documented concerns that show up across the broader ACiQ product line include questions about long-term coil integrity and the practical difficulty of cross-referencing parts when the underlying manufacturer is not disclosed. Independent technicians note that not knowing the OEM source makes it harder to look up service histories or confirm whether a part from a known manufacturer is a valid substitute.
HVAC contractors who have installed ACiQ equipment generally report that the hardware itself installs and performs as expected, but they flag the service model as something to discuss with the homeowner upfront. Because ACiQ is sold direct rather than through a dealer network, a warranty situation means coordinating between the homeowner, ACiQ support, and an independent contractor rather than routing through a single dealer contact. For a coil, that matters most if a refrigerant leak or manufacturing defect surfaces years into ownership, since the path to a resolution is less straightforward than with a Carrier or Trane dealer relationship. Buyers who go in with clear expectations about that trade-off and a contractor they trust tend to report satisfaction; those who assumed the service experience would mirror a traditional brand have found the process more effort than expected.
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 | EVM5X44M21A | N/A (coil only) | N/A (coil component) | Value pick |
| Carrier | Performance CNPVP Series | N/A (coil only) | N/A (coil component) | Priced moderately above ACiQ with full dealer network support |
| Trane | Spine Fin 4TXCB Series | N/A (coil only) | N/A (coil component) | Priced higher than ACiQ, backed by broad dealer and parts availability |
| Lennox | C33 Series Evaporator Coil | N/A (coil only) | N/A (coil component) | Priced at a premium over ACiQ with Lennox dealer service network included |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Can I pair this coil with my existing R-410A outdoor unit?
No. The EVM5X44M21A is engineered for R-454B refrigerant, which is not interchangeable with R-410A. Connecting it to an R-410A condenser will result in a refrigerant mismatch, improper system operation, and will void the warranty. You need an R-454B compatible condensing unit to complete the system.
Does the TXV come pre-installed, or do I need to buy it separately?
The TXV is factory installed on this coil, so your contractor does not need to purchase or add one at the job site. This is worth confirming on any coil you compare it to, since some competing coils at a similar price point ship without a TXV and require an added purchase.
How do I make a warranty claim if I have no local ACiQ dealer?
ACiQ sells direct and does not operate a traditional dealer network, so warranty service is handled by coordinating with ACiQ's support team and having an independent licensed HVAC contractor perform the work. You will want to confirm your contractor is comfortable with the process before installation, since the absence of a dealer network is the most practical friction point in a warranty situation.
What air handlers or furnaces is the EVM5X44M21A compatible with?
The coil is designed for the 21-inch cabinet width, so compatibility depends on matching that dimension and the tonnage rating to your air handler or furnace. ACiQ publishes system matchup documentation, and your contractor should verify the coil is on the approved equipment list for your specific air handler before purchasing, especially since R-454B system matching has tighter requirements than older refrigerant systems.
Is ACiQ equipment the same as a Carrier or ICP product under a different name?
Forum speculation links ACiQ to the ICP and Carrier manufacturing family, but ACiQ and its parent AC Direct have not publicly confirmed the manufacturer. That ambiguity is real and matters practically: technicians cannot easily cross-reference service bulletins or confirmed parts histories the way they can with a disclosed Carrier or Trane coil, so you should factor that into your decision if parts traceability is important to your contractor.
Specifications
| Cooling capacity | 3.5 Ton |
| Configuration | Multi-position |
| Refrigerant | R-454B |
| Model | EVM5X44M21A |