ACiQ 5 Ton Evaporator Coil | 21" Wide Multi-Positional A-Coil w/ TXV | R454B (EAM5X61M21A)
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Key features
- 5-ton capacity for larger residential and light commercial applications
- Multi-positional A-coil fits upflow, downflow, and horizontal installations
- 21-inch cabinet width for compatibility with common air handler sizes
- Factory-installed TXV eliminates separate metering device purchase and installation
- R-454B refrigerant ready, compliant with current EPA refrigerant transition requirements
- 12-year parts warranty included without dealer markup
About this system
The ACiQ EAM5X61M21A is a 5-ton multi-positional A-coil designed for use with R-454B refrigerant, the low-GWP replacement that is becoming the new standard as R-410A is phased out under EPA regulations. At 21 inches wide, it fits a range of air handler cabinets and can be installed in upflow, downflow, or horizontal configurations, which gives contractors flexibility on retrofit jobs where cabinet space is constrained. The coil ships with a thermostatic expansion valve (TXV) already integrated, so the metering device does not need to be sourced or installed separately, a small but real time-saver during commissioning.
This coil is a standalone component, not a complete system, so it must be matched with a compatible R-454B condensing unit and air handler. Buyers should confirm matched-system AHRI ratings with their contractor before purchasing, since efficiency numbers depend entirely on what the coil is paired with. At 5 tons, this is sized for larger homes, typically in the 2,500 to 3,500 square foot range depending on climate and insulation, and it suits replacement projects where the existing air handler cabinet and refrigerant line set are being retained but the indoor coil has failed or is incompatible with a new outdoor unit. The value proposition is straightforward: ACiQ prices this below comparable coils from Carrier, Trane, or Lennox while using the same R-454B refrigerant spec those brands are also transitioning to.
The EAM5X61M21A is a competitively priced R-454B evaporator coil that covers the basics well: correct refrigerant, integrated TXV, and multi-positional flexibility. The trade-offs are the ones that follow any ACiQ purchase: an undisclosed manufacturer, thin long-term reliability data, and a service model that depends on independent contractors rather than a factory dealer network.
Overall score is the average of the five ratings above.
What we like
- Lower upfront cost than comparable coils from Carrier, Trane, or Lennox
- Factory-installed TXV saves labor time and removes a parts-sourcing step
- R-454B compatibility keeps the system current with the EPA refrigerant phase-down timeline
- Multi-positional design adds installation flexibility on retrofit jobs
- 12-year parts warranty is competitive with name-brand coverage at this price tier
Trade-offs
- Manufacturer identity is not disclosed, which complicates parts cross-referencing and service history research
- No independent long-term reliability data; Consumer Reports does not yet rank ACiQ products
- Sold direct, so warranty service depends on finding an independent contractor willing to work on the brand
- Coil efficiency is entirely dependent on the matched condensing unit; no standalone SEER2 rating applies here
What homeowners and pros say about ACiQ
Homeowners who have installed ACiQ equipment generally report positive early experiences, citing quiet operation and responsive customer support as recurring themes in online forums and early owner reviews. For this specific coil, the conversation among buyers tends to center on two practical questions: whether a local contractor will work on a direct-sold brand, and how straightforward it is to pull a matched AHRI certificate for permit purposes. Neither issue is a dealbreaker, but both require a phone call before the purchase rather than after. Consumer Reports does not yet rank ACiQ products due to insufficient long-term field data, so independent reliability benchmarking is not yet available the way it is for Carrier or Trane.
HVAC technicians discussing ACiQ on trade forums are cautiously optimistic but flag the undisclosed manufacturer as a sourcing headache. When a coil develops a refrigerant leak or a TXV fails, knowing the actual OEM makes finding compatible replacement parts and cross-referencing service bulletins much faster. Because ACiQ has not confirmed its manufacturing partner, technicians are working without that shortcut. The 12-year parts warranty addresses cost exposure for early failures, but the contractor still needs to diagnose, document, and manage the claim independently. For a 5-ton coil going into a larger home, those are risks worth weighing against the price savings before committing.
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 | EAM5X61M21A | N/A (coil only, matched system rating required) | N/A (coil component) | Value pick |
| Carrier | CAPF series (CAPF6060D6) | Matched system dependent | N/A (coil component) | Moderately higher than ACiQ |
| Trane | 4TXCB006DS3 series | Matched system dependent | N/A (coil component) | Moderately to significantly higher than ACiQ |
| Lennox | CH35 series (CH35-60B) | Matched system dependent | N/A (coil component) | Moderately higher than ACiQ |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Does this coil come with a matched AHRI system rating, or do I need to find one separately?
The coil itself does not carry a standalone efficiency rating. You will need to verify a matched-system AHRI certificate by pairing it with a specific ACiQ or compatible condensing unit before your contractor can confirm the system SEER2. Check the AHRI directory using the model numbers for both the coil and the outdoor unit.
Is the TXV already installed, or does my contractor need to add one?
The TXV is factory-installed on this model, so your contractor does not need to source or install a separate metering device. This is worth confirming with the packing list when the unit arrives, since field installation errors with metering devices are a common source of efficiency and capacity problems.
My current system uses R-410A. Can I use this coil as a drop-in replacement?
No. This coil is designed for R-454B, which operates at different pressures and requires compatible lubricant, so it cannot be used with an R-410A condensing unit. If your outdoor unit still uses R-410A, you would need a coil specifically rated for that refrigerant, or replace the entire system with R-454B equipment.
If the coil develops a leak under warranty, how does the claims process work without an ACiQ dealer network?
ACiQ sells direct and does not operate a factory dealer network, so warranty service means finding an independent licensed HVAC contractor who is willing to document the failure, file the claim, and handle the repair. This is a real trade-off versus brands like Carrier or Trane where a factory-authorized dealer can handle the process. Make sure your contractor is comfortable with this before you buy.
Will this coil fit my existing air handler cabinet, or do I need to measure carefully?
The 21-inch width is a standard cabinet dimension, but you should measure your existing cabinet opening and compare it to ACiQ's published dimensional specs before ordering. Multi-positional A-coils still require correct drain pan orientation and refrigerant line connection placement for the installation direction you are using, so share the full spec sheet with your contractor before scheduling the job.
Specifications
| Cooling capacity | 5 Ton |
| Refrigerant | R-454B |
| Model | EAM5X61M21A |