ACiQ 80000 BTU Gas Furnace – 97% Variable Speed Modulating Multi-Positional Communicating (G97CMN0802120A)
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Key features
- 97% AFUE modulating gas valve for top-tier fuel efficiency
- Variable-speed ECM blower motor for quiet, consistent airflow
- Communicating control board for integration with matched ACiQ systems
- Multi-positional cabinet supports upflow, downflow, and horizontal installs
- 80,000 BTU output suited to mid-to-large residential applications
- 12-year parts warranty included, no dealer markup required
About this system
The ACiQ G97CMN0802120A is an 80,000 BTU, 97% AFUE modulating gas furnace designed for mid-to-large homes that need precise, efficient heat without the premium-brand price tag. At 97% AFUE, nearly all of the fuel burned converts to usable heat, placing this unit in the top efficiency tier for residential gas furnaces. The variable-speed blower and modulating gas valve work together to adjust output in small increments rather than simply switching on and off at full capacity, which keeps indoor temperatures more consistent and reduces cold-blast startup complaints common with single-stage equipment.
The communicating control board is worth noting for buyers pairing this furnace with a matched ACiQ air handler or cooling system. A communicating setup lets components share operating data and self-adjust, which can improve both comfort and efficiency over a non-communicating installation. The multi-positional cabinet means it can be installed upflow, downflow, or horizontal, giving contractors flexibility in tight or unconventional mechanical rooms. This furnace suits homeowners who want premium-tier efficiency and variable-speed comfort, are comfortable buying direct rather than through a dealer, and have a reliable independent HVAC contractor lined up for installation and any future service.
The ACiQ G97CMN0802120A delivers genuinely premium furnace specs at a price well below Carrier, Trane, or Lennox equivalents, and the 12-year warranty is competitive with anything in its class. The honest trade-off is that the brand is newer, long-term reliability data is thin, and the direct-sale model means you must vet your own installer rather than leaning on a factory dealer network.
Overall score is the average of the five ratings above.
What we like
- 97% AFUE is at the top of the efficiency range, keeping fuel bills low in cold climates
- Modulating gas valve and variable-speed blower provide noticeably steadier temperatures than single- or two-stage units
- Price undercuts name-brand equivalents by a meaningful margin without cutting the core specs
- 12-year parts warranty ships with the unit and does not depend on dealer registration games
- Early owner reports consistently highlight quiet operation and responsive customer support
Trade-offs
- Brand is relatively new, so long-term reliability data does not yet exist and Consumer Reports has not ranked it
- The actual manufacturer is not disclosed, making parts cross-referencing and service history harder than with a named brand
- No factory dealer network means you carry full responsibility for finding and vetting a qualified installer
- Communicating features only deliver their full benefit when paired with a compatible ACiQ system, adding cost if you are retrofitting
What homeowners and pros say about ACiQ
Early owners of ACiQ furnaces report quiet operation and steady temperatures after installation, which lines up with what you would expect from a modulating variable-speed design. Customer support responsiveness gets positive mentions in early reviews, though it is worth keeping in mind that these are short-term impressions. Consumer Reports has not yet assigned ACiQ a reliability score due to insufficient long-term data, so buyers should weigh that gap honestly rather than treating early satisfaction as a proxy for decade-long durability.
Independent HVAC contractors who have installed ACiQ equipment point to the direct-sale model as the practical friction point. Because the actual manufacturer is not publicly named, cross-referencing parts through familiar distribution channels is less straightforward than with a Carrier or Trane unit where the supply chain is well established. For this specific furnace, that means your contractor should confirm parts sourcing and lead times with ACiQ directly before committing, particularly for the communicating control board and condensate management components that are unique to high-efficiency modulating units. If your contractor is already familiar with the platform, the value proposition is real. If they are not, factor in a learning curve.
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 | G97CMN0802120A | N/A (furnace only) | Modulating variable | Value pick |
| Carrier | Infinity 98 (59MN7) | N/A (furnace only) | Modulating variable | Significantly higher than ACiQ |
| Trane | XC95m (S9V2) | N/A (furnace only) | Modulating variable | Significantly higher than ACiQ |
| Lennox | SLP99V | N/A (furnace only) | Modulating variable | Premium priced, highest of the group |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Can I use this furnace with my existing non-ACiQ thermostat and air conditioner?
Yes. The communicating board can also operate in conventional wiring mode, so it will work with a standard thermostat and a non-communicating cooling system. You will lose the efficiency and diagnostic benefits of a fully communicating setup, but basic heating and fan functions are not affected.
Who actually manufactures this furnace, and can I get parts from a local HVAC supplier?
ACiQ has not publicly named its manufacturing partner. Forum speculation points to the ICP and Carrier family of brands, but this is unconfirmed. Because the OEM is undisclosed, matching parts through a local distributor is harder than with a named brand, so it is worth confirming parts availability with ACiQ support before you need them urgently.
Does the 12-year warranty require professional installation or registration to stay valid?
ACiQ's warranty terms require installation by a licensed HVAC professional. You should review the specific registration requirements in the warranty documentation that ships with the unit, since conditions can change and confirming them before installation protects your coverage.
What gas pressure and electrical requirements should my contractor know before installation?
The G97CMN0802120A operates on natural gas or can be converted to LP with the appropriate kit, and the 120-volt electrical requirement is standard for most residential installations. Your contractor should confirm gas line sizing and venting requirements for a two-pipe condensing furnace, since the 97% AFUE design produces acidic condensate and requires PVC flue piping rather than traditional metal vent.
Is this furnace a good fit if I live in a mild climate and the furnace only runs a few weeks a year?
A 97% AFUE modulating unit recovers its efficiency premium through run hours, so in climates with short, mild heating seasons the payback period versus a lower-cost 80% or 96% furnace stretches out significantly. In mild climates, a less expensive two-stage or even single-stage unit may offer better overall value.
Specifications
| Furnace output | 80000 BTU |
| Furnace efficiency | 97% AFUE |