ACiQ 110000 BTU Gas Furnace – 80% Multi-18 Speed ECM Multi-Positional (N80MSN1102420A)
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Key features
- 110,000 BTU output suits larger homes with high heating loads
- 80% AFUE single-pipe venting, compatible with existing B-vent or metal flue systems
- 18-speed ECM blower motor reduces electricity use and lowers airflow noise
- Multi-positional cabinet installs upflow, downflow, or horizontal
- 12-year parts warranty included at purchase with no dealer markup
- Shipped direct from ACiQ, undercutting dealer-channeled name-brand pricing
About this system
The ACiQ N80MSN1102420A is a 110,000 BTU, 80% AFUE gas furnace designed for larger homes in moderate-to-cold climates where the full heating load demands serious output. The 80% AFUE rating means 80 cents of every dollar spent on gas becomes usable heat, with the remaining 20% lost through the flue. That puts it squarely in the single-pipe, standard-efficiency category rather than the condensing (90%+) tier, making it a practical fit for homes that already have B-vent or metal flue infrastructure and cannot easily add the PVC condensate drainage that a high-efficiency unit requires.
What separates this model from a basic single-speed furnace is the 18-speed ECM blower motor. ECM (electronically commutated motor) technology ramps airflow up and down gradually rather than switching between fixed speeds, which reduces temperature swings, cuts electricity consumption on the blower circuit, and lowers operating noise compared to a standard PSC motor. The multi-positional cabinet means it can be installed upflow, downflow, or horizontal, giving installers flexibility in attics, crawlspaces, basements, and utility closets. At 110,000 BTU it is sized for homes roughly in the 2,800 to 4,000 square-foot range depending on climate zone, insulation, and duct layout, though a Manual J load calculation should always confirm sizing before purchase.
The ACiQ N80MSN1102420A delivers genuinely capable hardware at a price well below comparable ECM-equipped furnaces from Carrier or Trane, and the 18-speed blower is a real comfort upgrade over single-speed competitors at this price point. The trade-off is that ACiQ is still a young brand without long-term reliability data, and the undisclosed manufacturer makes parts sourcing and service history harder to verify than with an established name brand. For cost-conscious buyers replacing an older 80% furnace in an existing B-vent system, it is a compelling option as long as they have a qualified independent contractor lined up before purchase.
Overall score is the average of the five ratings above.
What we like
- 18-speed ECM motor provides notably quieter, more even heat distribution than single- or two-speed alternatives
- 80% AFUE and B-vent compatibility means no flue retrofit cost for homes with existing metal vent systems
- 12-year parts warranty ships with the unit and requires no dealer registration premium
- Multi-positional cabinet reduces installation constraints in tight or unconventional mechanical spaces
- Direct-to-consumer pricing undercuts dealer-channeled name brands at comparable spec levels
Trade-offs
- 80% AFUE trails 95-96% condensing furnaces on long-term fuel costs, which adds up significantly in cold climates over a 15-20 year lifespan
- ACiQ is a newer brand with no Consumer Reports reliability ranking and limited independent long-term field data
- The undisclosed manufacturer complicates parts cross-referencing and makes it harder for technicians unfamiliar with the brand to service the unit confidently
- No dealer network means the buyer must independently vet and schedule their own qualified contractor, and warranty service coordination falls on the homeowner
What homeowners and pros say about ACiQ
Early owner feedback collected across home improvement forums and ACiQ’s own review channels points to quiet blower operation and consistent heat delivery as the most repeated positives, with several owners specifically noting that the ECM motor made the furnace noticeably less intrusive than the single-speed unit it replaced. Support responsiveness has also been cited positively by buyers who needed help with setup. Consumer Reports has not yet assigned ACiQ a reliability score because the brand is too new to have accumulated the long-term failure data that scoring requires, so those encouraging early impressions should be weighed against the reality that no independent body has validated them over a full equipment lifespan yet.
From a service perspective, the two friction points most relevant to this furnace are the undisclosed manufacturer and the absence of a dealer network. When a technician who has never worked on an ACiQ unit opens the cabinet, they cannot quickly fall back on cross-referenced service bulletins from a known parent brand, which can extend diagnostic time and complicate parts ordering. Because the unit is sold direct, the homeowner carries the full responsibility of finding a qualified contractor before installation and again at any future service call. Neither issue is a dealbreaker, but both are real factors worth accounting for before purchase rather than discovering them during a January breakdown.
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 | N80MSN1102420A | N/A (furnace only) | Variable (18-speed ECM) | Value pick |
| Carrier | Performance 80 (58TP / TP8) | N/A (furnace only) | Two-stage | Moderately higher through dealer channel |
| Trane | S8X2 (XR80) | N/A (furnace only) | Single-stage | Comparable to slightly higher through dealer channel |
| Lennox | Merit ML180 | N/A (furnace only) | Single-stage | Comparable to moderately higher through dealer channel |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Can I use my existing metal B-vent flue with this furnace, or do I need to install PVC pipe?
Yes. At 80% AFUE this is a non-condensing furnace, so it vents with standard Type B double-wall metal pipe just like most older furnaces. No PVC condensate drain or secondary heat exchanger venting is required, which is the primary practical reason many homeowners choose an 80% unit for a replacement install.
What does '18-speed ECM' actually mean for day-to-day comfort compared to a standard furnace?
A standard PSC motor runs at one or two fixed speeds, which creates noticeable blasts of hot air followed by quiet periods. The ECM motor in this unit adjusts airflow in small increments, so the furnace ramps up gradually, runs longer at lower speeds, and shuts down more gently. In practice this means steadier room temperatures, less noise from the supply registers, and lower electricity consumption on the blower circuit.
Who actually manufactures ACiQ furnaces, and does it matter for parts availability?
ACiQ is AC Direct's house brand and the underlying manufacturer is not publicly disclosed, though industry forum discussion points toward the ICP and Carrier family without confirmation. It does matter practically because a technician cannot easily cross-reference the unit to a known parent brand for parts lookup, which can slow down a repair. ACiQ's parts support via its direct channel is the primary path, so confirming parts lead times before a cold-season breakdown is a reasonable precaution.
Is 110,000 BTU the right size for my home, or should I go smaller?
BTU sizing depends on your climate zone, insulation level, window area, ceiling height, and duct system, not just square footage alone. A rough rule of thumb places 110,000 BTU in the range of 2,800 to 4,000 square feet in a moderate-to-cold climate, but an oversized furnace short-cycles, wastes fuel, and wears components faster. Before purchasing, have a contractor run a Manual J heat load calculation to confirm the sizing is correct for your specific house.
How does the 12-year warranty work if I buy direct and there is no local ACiQ dealer?
The 12-year parts warranty is registered through ACiQ directly at the time of purchase, with no dealer involvement required to activate it. If a covered component fails, you coordinate the claim with ACiQ and use an independent licensed HVAC contractor of your choosing to perform the repair. The parts are covered but labor is not, so budgeting for service call and labor costs separately is important.
Specifications
| Furnace output | 110000 BTU |
| Furnace efficiency | 80% AFUE |