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ACiQ 44,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace ACiQ 44,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace Price range: $782.95 through $824.95
ACiQ 88,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace ACiQ 88,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace Price range: $921.95 through $975.95
aciq|SKU:N80MSN1102120A

ACiQ 110,000 BTU Gas Furnace — 88,000 BTU Output, Multi-Positional Install

110,000 BTU Heating for Grid-Independent Homes

88,000 BTU output — Holds warmth through the coldest months
Multi-positional install — Upflow, downflow, or horizontal
18-speed ECM motor — Consistent airflow at 2,040 CFM
Propane convertible — Optional LP kit for off-grid fuel
Metal flue venting — Standard 80% AFUE venting required
  • Free Shipping -- Ships free to your door, no freight surprises
  • 30-Day Performance Guarantee -- Uninstalled returns accepted in original packaging

$1,057.95

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ACiQ 110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
$1,057.95

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In the box

  • ACiQ N80MSN1102120A gas furnace
ACiQ 110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 110,000 BTU Gas Furnace — 88,000 BTU Output, Multi-Positional Install
$1,057.95

110,000 BTU Heating for Grid-Independent Homes

The ACiQ 110,000 BTU gas furnace delivers 88,000 BTU of field-tested heating output at 80% AFUE — enough to hold warmth through the coldest months when the grid goes down and you need reliable backup heat. Its multi-positional design supports upflow, downflow, or horizontal installation, giving you real flexibility in tight mechanical rooms or off-grid builds where space is limited. The 18-speed constant torque ECM motor pushes up to 2,040 CFM efficiently, and the durable outer casing is built-to-survive years of operation. Ships free.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
110,000 BTU Input
Multi-Positional Install
18-Speed ECM Motor
Natural Gas Ready
88,000 BTU
Heating Output
2,040 CFM
Maximum Airflow
80% AFUE
Fuel Efficiency
Heating That Holds When Temperatures Drop

Heating That Holds When Temperatures Drop

The blackout that left your home at 42°F for three days isn't hypothetical — it happened to thousands last winter. Unlike grid-tied electric systems that go dark the moment power drops, the ACiQ 110,000 BTU furnace runs on natural gas or propane, delivering 88,000 BTU of steady heat. When paired with a battery-backed inverter for the blower motor, this furnace becomes a grid-independent heat source that doesn't depend on the utility line staying up. Off Grid Vault carries this unit because it meets our standard: straightforward operation, no proprietary controls that lock you in, and 80% AFUE efficiency that converts 88,000 BTU of every 110,000 BTU input into actual warmth for your home.

Installation Flexibility for Any Homestead Layout

Installation Flexibility for Any Homestead Layout

The ACiQ furnace supports upflow, downflow, and horizontal configurations — meaning it adapts to your mechanical room, crawlspace, or attic without forcing a costly layout change. The multi 18-speed constant torque ECM motor delivers up to 2,040 CFM at 1,050 RPM on a direct-drive 1 HP motor, running on standard 115v single-phase power with a 15-amp breaker. That is a straightforward electrical requirement that pairs cleanly with a small inverter in a backup power setup. The 1/2-inch NPT gas connection and 13.6-inch WC maximum inlet pressure keep the plumbing simple. Metal flue venting is required for 80% AFUE — if your setup needs PVC venting, you need a 90%+ unit instead.

Fuel Choice That Matches Your Property

Fuel Choice That Matches Your Property

This furnace ships configured for natural gas but accepts an optional LP conversion kit for propane setups — the fuel most homesteads and off-grid properties actually rely on. At 110,000 BTU input and 88,000 BTU output, it is sized for larger homes and well-insulated spaces in cold climate zones. The durable outer casing handles years of seasonal cycling without degradation. One honest note: this unit is not Low NOx or Ultra Low NOx compliant, which means additional fees may apply if shipped to California. And it is not approved for mobile home installation without modifications. We include those details because hidden restrictions are exactly the kind of thing that wastes your time and money.

Compatibility Check

Verify these conditions before adding to your build.

  • Home is set up for metal flue venting (PVC/plastic not compatible with 80% AFUE)
  • Natural gas supply available at install location or LP conversion kit sourced separately
  • 115V single-phase 60Hz electrical connection accessible within reach of furnace

Where This Furnace Works

Built for dependable heat in demanding, grid-independent installations.

Off-Grid Homesteads
Remote Cabins
Workshop Heating

Full specifications

At a glance

Power
1 HP
Compliance
Not compliant
Warranty
See product page
Full specifications15 data points across 4 categories

Dimensions

Weight146.00 lbs

Power & Performance

Heating BTU110,000
Furnace Efficiency / AFUE80%
Maximum CFM2040
Blower MotorMulti 18-Speed Constant Torque (MCT) ECM Motor
Drive TypeDirect
Motor RPM1050
Horsepower1 HP
Electrical115v 1 Phase 60 Hz
PhaseSingle Phase

Materials

Casing & ConstructionSee product page

Compliance & Warranty

Exhaust Flue RequirementMetal
Low NOx ComplianceNot compliant
Mobile Home ApprovalNot approved without additional modifications
WarrantySee product page

The Off Grid Vault Promise

We stand behind every product we sell — because your off-grid build can't afford weak links.

Free ShippingShips free to your door — LTL freight included on large units, no minimums or thresholds.
30-Day Performance GuaranteeUninstalled, in original packaging — if it doesn't perform as specified, we make it right.
Free System Design ConsultationOur engineers review your setup and confirm compatibility before you commit. No guesswork.
★★★★★
“Replaced my old 80% unit with this ACiQ in my 1,800 sq ft homestead. Paired it with my EG4 inverter and battery bank for full backup capability. The multi-speed ECM motor is noticeably quieter than my previous furnace. Installation was straightforward — my HVAC guy had it running in under five hours. Metal flue was already in place so no venting changes needed. Been running it through a Montana winter and it holds 68°F consistently even at 15°F outside. Exactly what I needed.”
M
Marcus L.Bozeman, MT

110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace

The ACiQ 110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace is a cost-effective furnace model designed to deliver dependable comfort to your home. With basic efficiency, it provides sufficient heating output to maintain warmth even during the coldest months of the year. This unit features an input of 110,000 BTUs and an 80% AFUE (Annual Fuel Utilization Efficiency), resulting in an output of 88,000 BTUs. This means 80% of the fuel consumed is converted into usable heat, while the remaining 20% is lost through the flue and standard furnace operations. As with all 80% efficiency models, metal flue venting is required. If your home requires plastic/PVC venting, you’ll need a furnace with at least 90% efficiency. The 110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace is configured for natural gas out of the box but can be converted to propane using an optional LP kit. This unit is not Low NOx or Ultra Low NOx compliant and may be subject to additional fees if shipped to California.

This furnace offers excellent installation flexibility, as it supports upflow, downflow, or horizontal configurations. Its durable outer casing is built to handle wear and tear over the years, ensuring consistent home comfort throughout its life span. However, please note that this model is not approved for mobile home use without additional modifications.

Every ACiQ furnace is engineered to provide quiet, reliable operation year after year. The 110,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnaceincludes a whisper-quiet ECM blower fan, thicker sheet metal construction, and enhanced cabinet insulation for reduced operating noise. ACiQ units are designed to save you money both upfront and over time by lowering energy bills. Multi-speed or variable-speed ECM blowers come standard, and available upgrades such as two-stage heating, modulating burners, and secondary heat exchangers can further improve energy efficiency and home comfort. Built with premium components including an aluminized steel heat exchanger, this furnace is also backed by extended warranty options—10, 20, or lifetime on the heat exchanger with online registration.

This gas appliance must be installed by a trained and qualified technician. Incorrect installation of gas lines, flue connections, or venting can lead to serious injury or even death. By purchasing this unit, you confirm that a trained professional will be responsible for the installation. We are not liable for any personal injury or property damage resulting from improper installation or service. The individual performing the installation or maintenance assumes full responsibility for any associated risks. Please note that many local jurisdictions require a licensed professional to install this type of equipment.


88,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace

ACiQ 110,000 BTU 80% Gas Furnace Specs

  • Weight: 146.00 lbs
  • Exhaust Flue Requirement: Metal
  • Furnace Efficiency / AFUE: 80%
  • Heating BTU: 110,000
  • Blower Motor: Multi 18-Speed Constant Torque (MCT) ECM Motor
  • Drive Type: Direct
  • Maximum CFM: 2040
  • Motor RPM: 1050
  • Horsepower: 1 HP
  • Configuration: Upflow/Downflow/Horizontal
  • Electrical: 115v 1 Phase 60 Hz
  • Phase: Single Phase
  • Max Breaker Size: 15 Amps
  • Connection: 1/2″ NPT
  • Maximum Inlet Pressure: 13.6″wc
  • Burner Stages: Single
  • Ignition Type: Direct Ignition with Silicon Nitride Hot Surface Ignitor
  • Fuel Type: Propane, Natural Gas
  • Certification: AHRI Certified
  • Dimensions: 33 1/4″ H x 21″ W x 29″ D


ACiQ 110,000 BTU 80% Gas Furnace Specs

  • 110,000 BTU input with 80% AFUE efficiency (88,000 BTU output)
  • Economical heating solution for larger homes or colder climates
  • Single-stage burner paired with quiet ECM multi-speed blower
  • Multi-positional design: upflow, downflow, or horizontal installation
  • Operates on natural gas; field-convertible to propane with optional LP kit
  • Requires metal flue venting (not compatible with PVC venting)
  • Not Low NOx or Ultra Low NOx compliant (CA mitigation fee may apply)
  • Whisper-quiet operation with enhanced cabinet insulation and thicker sheet metal
  • ECM blower included standard; optional features include two-stage heating, modulating burners, and high-efficiency secondary heat exchangers
  • Aluminized steel heat exchanger for enhanced durability


Your Satisfaction with ACiQ is Guaranteed:

  • 20 Year Heat Exchanger and 10 Year Parts with Online Registration
  • Lowest Price Guarantee

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Frequently Asked Questions

80% AFUE means 88 cents of every dollar in fuel becomes heat. A 95% AFUE unit recovers more but costs significantly more upfront. For a homestead using propane or natural gas as primary heat — not as a supplement — the payback gap between 80% and 95% can take 8 to 12 years depending on your climate zone and fuel costs. If your property already has metal flue venting in place, this unit avoids the venting retrofit a 90%+ furnace requires. We are not telling you 80% is better than 95%. We are telling you it is the right choice when the installation cost difference outweighs the efficiency gain.
Off Grid Vault is an authorized dealer. Warranty claims go through us — not through a third-party ticket queue. ACiQ furnaces carry a manufacturer warranty, and we handle the process on your behalf. If something fails under warranty, you contact us and we manage the claim. That is the difference between buying from a marketplace where the seller disappears after shipment and buying from a dealer who has a relationship with the manufacturer. Free shipping is included on this unit, and our 30-day performance guarantee covers uninstalled returns in original packaging.
This furnace uses standard metal flue venting — the same type required by any 80% AFUE gas furnace. If your current system uses PVC or plastic venting, you have a 90%+ efficiency unit installed, and this ACiQ would require switching back to metal flue. The 1/2-inch NPT gas connection is standard. Ductwork compatibility depends on the 2,040 CFM maximum output and your home's existing duct sizing. For a specific compatibility assessment, contact us with your duct dimensions and we will confirm fit before you purchase. We would rather tell you it does not work upfront than have you discover it on install day.
The blower motor on this unit draws power on 115v single-phase with a 15-amp breaker. That is a manageable load for most off-grid battery systems — roughly 1,500 to 1,750 watts surge. The gas valve and igniter add minimal draw. So yes, paired with an inverter that handles 120V AC output and a battery bank with sufficient capacity, this furnace will heat your home during an extended outage. It does not store electricity — it needs your inverter to run the blower. But the heat source itself is the gas supply, not the grid. That is a meaningful distinction when the power company leaves you in the cold.
80% AFUE has been the residential standard for decades and remains widely deployed in cold-climate homes across the Midwest, Northeast, and Pacific Northwest. It converts 88,000 of every 110,000 BTU into usable heat. The 20% loss goes out the flue — that is the physics of non-condensing combustion. Higher AFUE units capture more of that waste heat through condensing, but they require PVC venting, a condensate drain, and a higher upfront cost. For a property that already has metal flue infrastructure, the 80% unit avoids a full venting retrofit. It is not the most efficient option on the market. It is the practical option when your existing setup dictates metal flue.
A qualified HVAC technician can typically install a single-stage multi-positional gas furnace in four to six hours, assuming your existing ductwork and gas line are compatible. If venting modifications are needed, add another one to two hours. This unit's multi-positional design reduces layout constraints, which often cuts install time compared to units limited to a single configuration. We ship this furnace free to your door — at 146 lbs, plan for a two-person lift or a hand truck. If you need help determining whether this unit fits your mechanical room, contact us before ordering. We would rather size it right than have you deal with a return.
SKU: N80MSN1102120A Category: Brand:

The Off Grid Vault Promise

We stand behind every product we sell — because your off-grid build can't afford weak links.

Free Shipping Ships free to your door — LTL freight included on large units, no minimums or thresholds.
30-Day Performance Guarantee Uninstalled, in original packaging — if it doesn't perform as specified, we make it right.
Free System Design Consultation Our engineers review your setup and confirm compatibility before you commit. No guesswork.

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About aciq Furnaces

aciq is a trusted manufacturer of premium furnaces. OffGridVault is an authorized dealer offering the full aciq lineup with free delivery, price match guarantee, and expert support.

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