ACiQ 110000 BTU Gas Furnace – 80% Two Stage Variable Speed Multi-Positional Communicating (G80CTL1102120A)
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Key features
- 110,000 BTU output with 80% AFUE non-condensing heat exchanger
- Two-stage gas valve reduces short cycling and improves temperature consistency
- Variable-speed ECM blower motor for quieter, more efficient air delivery
- Multi-positional cabinet installs upflow, downflow, or horizontal
- Communicating controls integrate with compatible ACiQ equipment for simplified system setup
- 12-year parts warranty included at purchase price with no dealer markup
About this system
The ACiQ G80CTL1102120A is a 110,000 BTU, 80% AFUE two-stage gas furnace with a variable-speed ECM blower motor and multi-positional installation capability. At 80% AFUE, roughly one-fifth of the fuel you burn exits the flue rather than heating your home, which is the baseline efficiency tier for gas furnaces in most U.S. climate zones. It is not the most efficient furnace on the market, but it costs less to buy and install than a 96% or 98% condensing unit, and the payback math often favors it in milder heating climates or when the upfront budget is tight.
The two-stage gas valve matters in everyday comfort: the furnace runs on a lower first stage most of the time, cycling less often and holding steadier temperatures before stepping up to full output only when outdoor conditions demand it. Pair that with the variable-speed blower and you get quieter airflow, better humidity management, and more even heat distribution than a single-stage unit. The communicating controls allow the furnace to talk directly with a compatible ACiQ air handler or thermostat, which simplifies setup and can improve efficiency when the whole system is matched. Multi-positional design means it can be installed upflow, downflow, or horizontal, giving a contractor flexibility in tight mechanical rooms, attics, or crawl spaces.
This unit is a good fit for homeowners in mixed or moderately cold climates who want genuine two-stage performance and a low purchase price but are not chasing the highest possible efficiency tier. It is sized for larger homes, typically in the 2,500 to 3,500 square foot range depending on insulation and climate, though a proper Manual J load calculation should always determine sizing.
The ACiQ G80CTL1102120A delivers legitimate two-stage, variable-speed performance at a price that undercuts most name-brand equivalents, making it a credible option for budget-conscious buyers in moderate heating climates. The 80% AFUE rating is honest baseline efficiency, not a differentiator, and the brand's short track record means you are accepting more uncertainty about long-term reliability than you would with a Carrier or Trane. For the right buyer with a qualified installer, the value proposition is real, but it requires eyes-open acceptance of the trade-offs.
Overall score is the average of the five ratings above.
What we like
- Two-stage operation delivers noticeably steadier home temperatures versus single-stage alternatives
- Variable-speed ECM blower is genuinely quieter and uses less electricity than a standard PSC motor
- 12-year parts warranty is included without dealer markup, which is better coverage than many name brands offer at this price point
- Multi-positional design gives installers real flexibility in non-standard mechanical spaces
- Purchase price consistently undercuts Carrier, Trane, and Lennox equivalents at similar feature sets
Trade-offs
- 80% AFUE is the minimum efficiency tier and will cost more to operate annually than a 95%+ condensing furnace in cold climates
- Brand is new enough that Consumer Reports has not yet assigned a reliability score, so long-term durability is genuinely unproven
- The undisclosed manufacturer makes it harder to cross-reference parts, service bulletins, or technician familiarity when something goes wrong
- No factory dealer network means you are dependent on independent contractors who may not have seen this specific board or communicating system before
What homeowners and pros say about ACiQ
Early owner feedback on ACiQ furnaces leans positive, with quiet blower operation and responsive customer support appearing consistently in online reviews. The variable-speed ECM motor earns specific praise for keeping airflow noise low enough that homeowners barely notice the system running. Consumer Reports has not yet assigned ACiQ a reliability score because the brand is too new for the long-term failure data that rating requires, so the positive early sentiment is genuine but not the same as a proven track record. That distinction matters more for a furnace, which is expected to run 15 to 20 years, than it would for a lower-stakes appliance purchase.
For HVAC contractors, the most commonly raised concern about ACiQ is the undisclosed manufacturer, which makes it harder to cross-reference parts or draw on institutional knowledge about known failure patterns on similar equipment. With an established brand, a technician who has serviced hundreds of Carrier 58TP furnaces arrives with a mental library of common faults. With ACiQ, that cross-brand familiarity is harder to establish until more units accumulate service history in the field. The communicating control system adds another layer, since a contractor unfamiliar with ACiQ’s specific board may spend extra diagnostic time on a fault that a factory-authorized tech would recognize immediately. None of these are disqualifying issues, but buyers should budget for the possibility that the first service call takes a little longer than it would on a brand the technician has serviced dozens of times before.
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 | G80CTL1102120A | N/A (furnace only) | Two-stage | Value pick |
| Carrier | Performance 80 (58TP) | N/A (furnace only) | Two-stage | Moderately higher than ACiQ through dealer network |
| Trane | S8X2 (XR80) | N/A (furnace only) | Two-stage | Moderately higher than ACiQ through dealer network |
| Lennox | Merit ML180 | N/A (furnace only) | Two-stage | Moderately to significantly higher than ACiQ through dealer network |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Will any licensed HVAC technician be able to service this furnace, or do I need a specialist?
Any licensed gas furnace technician can handle basic service like heat exchanger inspection, ignitor replacement, and blower maintenance. The communicating control board is the one area where familiarity matters more, since technicians used to standard 24-volt wiring may need to review the ACiQ documentation before troubleshooting a communication fault. Because ACiQ is sold direct rather than through a dealer network, there is no factory-authorized service chain, so you are relying entirely on independent contractors.
Is 80% AFUE going to cost me significantly more to run than a high-efficiency model?
Yes, meaningfully so in cold climates. An 80% AFUE furnace exhausts about 20% of the heat energy it consumes, while a 96% AFUE unit exhausts only about 4%. In a cold climate zone running the furnace heavily, that gap can translate to hundreds of dollars per year in extra gas costs depending on local rates and home size. In mild climates with shorter heating seasons, the payback period for a high-efficiency upgrade often stretches long enough that 80% AFUE makes financial sense.
What does 'communicating' mean for this furnace, and do I need a special thermostat?
Communicating means the furnace and air handler exchange digital status signals over a proprietary data bus rather than relying purely on traditional 24-volt control wires. This can simplify setup, improve fault diagnostics, and allow the system to optimize staging automatically when matched ACiQ equipment is used together. A standard thermostat will still operate the furnace in conventional mode, but you will not get the full benefits of the communicating system unless you use a compatible thermostat and air handler.
How do I know who actually manufactures this furnace, and does it matter for parts?
ACiQ does not publicly disclose its manufacturer. Forum speculation has pointed toward the ICP and Carrier family of companies, but this is unconfirmed and ACiQ has not verified it. It matters for parts because if you cannot confirm a manufacturing relationship, you cannot reliably cross-reference OEM part numbers from a more established brand. ACiQ does supply replacement parts directly, but availability over a 15-to-20-year furnace lifespan is an open question that name brands with deep distribution networks do not present.
Can this furnace be installed horizontally in an attic or crawl space?
Yes, the multi-positional cabinet supports upflow, downflow, and horizontal installation. Horizontal installs require that your contractor configure the drain pan and flue correctly for that orientation, which is standard practice but does add a step. Confirm with your installer that they have reviewed the ACiQ installation manual for the specific orientation, since communicating boards and variable-speed blowers have additional wiring steps compared to a basic single-stage unit.
Specifications
| Furnace output | 110000 BTU |
| Furnace efficiency | 80% AFUE |