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aciq|SKU:N80MSN1552420A

ACiQ 154,000 BTU Gas Furnace — 123,200 BTU Output, Multi-Positional

154,000 BTU Heating for Off-Grid and Remote Homes

123,200 BTU output — Powers through extreme cold in large spaces
Multi-positional install — Upflow, downflow, or horizontal mounting
ECM blower motor — 18-speed constant torque for steady airflow
Natural gas ready — LP conversion kit available for propane setups
  • FREE System Design Consultation -- Our engineers size your furnace for your actual square footage and climate zone
  • FREE Shipping -- Freight delivery included on this 168 lb unit — no surprise charges

$1,246.95

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ACiQ 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
$1,246.95

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In the box

  • ACiQ N80MSN1552420A gas furnace unit
  • Installation documentation
ACiQ 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 154,000 BTU Gas Furnace — 123,200 BTU Output, Multi-Positional
$1,246.95

154,000 BTU Heating for Off-Grid and Remote Homes

The ACiQ 154,000 BTU gas furnace delivers 123,200 BTUs of actual heating output, making it a field-tested workhorse for large homes, workshops, and off-grid properties facing extreme cold. Its multi-positional design supports upflow, downflow, or horizontal installation, so it adapts to your setup rather than the other way around. The built-to-survive cabinet and multi 18-speed ECM motor provide consistent airflow without unnecessary complexity. Pre-configured for natural gas with an optional LP conversion kit available, this unit runs on 115v and requires metal flue venting. Ships free to your door.

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154,000 BTU Input Power
Multi-Positional Install Flexibility
18-Speed ECM Blower Motor
Natural Gas or Propane
154,000
Input BTU
80%
AFUE Efficiency
1,965
Maximum CFM
Heat That Actually Delivers When Temperatures Drop

Heat That Actually Delivers When Temperatures Drop

Most homeowners discover their furnace can't handle real cold only after the first hard freeze. That's the problem with equipment chosen on price alone — it fails when you need it most. Off Grid Vault carries only products we would install on our own properties. This ACiQ unit delivers 123,200 BTUs of actual output from 154,000 BTU input at 80% AFUE, enough to heat large cabins, workshops, and homesteads through sustained subzero conditions. The single-stage gas burner fires consistently, and the 18-speed ECM blower maintains even temperatures without the complexity of multi-stage systems. Every product we sell is vetted for real-world performance, not datasheet optimism.

Install It Your Way — Upflow, Downflow, or Horizontal

Install It Your Way — Upflow, Downflow, or Horizontal

Off-grid builds don't follow standard floor plans. Your furnace needs to fit where your structure allows it, not the other way around. The ACiQ 154,000 BTU furnace supports upflow, downflow, and horizontal configurations, so it adapts to crawl spaces, attics, utility rooms, or dedicated mechanical closets. At 168 lbs with a direct-drive .75 HP ECM motor, the unit keeps things simple — fewer moving parts mean fewer failure points. The multi 18-speed constant torque blower delivers up to 1,965 CFM at 1,050 RPM, moving serious air volume through ductwork without the ramp-up lag of standard PSC motors. For remote properties where a service call isn't a phone call away, simplicity is a feature.

Straightforward Gas Heat — Natural or Propane

Straightforward Gas Heat — Natural or Propane

Remote cabins and homesteads run on whatever fuel makes sense for the location. This furnace ships pre-configured for natural gas with a 1/2 inch NPT connection and 13.6 inch WC maximum inlet pressure. If your property runs on propane, an optional LP conversion kit adapts the burner. At 80% AFUE, 80% of every dollar spent on fuel becomes usable heat — the remaining 20% exits through the metal flue. That metal flue requirement is worth noting: if your install calls for PVC venting, you need a 90% AFUE or higher unit instead. This furnace runs on 115v single-phase power at 60 Hz with a 15-amp max breaker, drawing minimal electrical load from your system.

Installation Compatibility

Confirm these conditions before adding to your system build.

  • Your installation can accommodate metal flue venting
  • Your electrical panel supports a 115v / 15 amp dedicated circuit
  • Your property is not in a Low NOx or Ultra Low NOx regulated jurisdiction

Where This Furnace Performs

Designed for properties that need serious heat output and flexible installation.

Large Off-Grid Homes
Workshops and Outbuildings
Remote Cabins and Homesteads

Full specifications

At a glance

Power
.75 HP
Dimensions
15 Amps
Compliance
Not compliant with Low NOx or Ultra Low NOx regulations
Full specifications13 data points across 4 categories

Dimensions

Weight168.00 lbs

Power & Performance

Heating BTU154,000
Furnace Efficiency / AFUE80%
Maximum CFM1965
Blower MotorMulti 18-Speed Constant Torque (MCT) ECM Motor
Drive TypeDirect
Motor RPM1050
Horsepower.75 HP
Exhaust Flue RequirementMetal

Compliance & Warranty

ConfigurationUpflow/Downflow/Horizontal
Electrical115v 1 Phase 60 Hz
Max Breaker Size15 Amps
NOx ComplianceNot compliant with Low NOx or Ultra Low NOx regulations

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. This furnace is no exception.

30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right — uninstalled returns accepted within 30 days in original packaging.
Free ShippingShips free to your door, including LTL freight on large units — no surprise charges at checkout.
Authorized Dealer SupportWarranty claims handled directly through us as an authorized dealer. Real people, not a ticket queue.
★★★★★
“Installed this in my 1,800 sq ft shop in northern Montana last October. We hit -22°F in January and this furnace kept the building at 68°F without straining. The ECM blower is noticeably quieter than my old unit. Went with propane since that's what we have on the property — conversion was straightforward. Wish I'd done this years ago instead of limping along with a wood stove and space heaters.”
D
Dale L.Kalispell, MT

154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace

The ACiQ 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace is an affordable furnace designed to deliver reliable heating and comfort throughout your home. Despite being a basic efficiency model, it offers powerful heating performance that ensures your space stays warm even during extreme cold. This unit has an input of 154,000 BTUs and operates at 80% AFUE (Annual Fuel Utilization Efficiency), which translates to an output of 123,200 BTUs. With 80% efficiency, 80% of the fuel is converted into heat while the remaining 20% is lost through the flue and normal operation. As with all 80% efficiency furnaces, this model requires metal flue venting. If your installation requires plastic or PVC venting, a 90% or higher efficiency model is necessary. The unit comes pre-configured for natural gas, but an optional LP conversion kit is available for propane use. Please note, this model is not compliant with Low NOx or Ultra Low NOx regulations and may be subject to additional fees if shipped to California.

Installation flexibility is a strong feature of the ACiQ 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace, which supports upflow, downflow, or horizontal orientations. The unit features a durable outer cabinet built to withstand long-term use, giving homeowners peace of mind that their heating system is built to last. However, it is not approved for use in mobile homes unless properly modified.

Like all ACiQ furnaces, the 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace is built for comfort, performance, and quiet operation. It features whisper-quiet ECM blower fans and is constructed with thick sheet metal and extra cabinet insulation to reduce operational noise. Every ACiQ furnace includes a multi-speed or variable-speed ECM blower, helping you save money both upfront and on energy bills over time. Optional upgrades such as high-efficiency secondary heat exchangers, two-stage heating, and modulating burners are available to boost efficiency and enhance comfort. The aluminized steel heat exchanger and robust build quality reflect ACiQ’s commitment to long-lasting durability. This unit is also backed by extended warranty coverage—10-year, 20-year, 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.


154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace

ACiQ 154,000 BTU 80% Gas Furnace Specs

  • Weight: 168.00 lbs
  • Exhaust Flue Requirement: Metal
  • Furnace Efficiency / AFUE: 80%
  • Heating BTU: 154,000
  • Blower Motor: Multi 18-Speed Constant Torque (MCT) ECM Motor
  • Drive Type: Direct
  • Maximum CFM: 1965
  • Motor RPM: 1050
  • Horsepower: .75 HP
  • Configuration: Upflow/Downflow/Horizontal
  • Electrical: 115v 1 Phase 60 Hz
  • 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 24 1/2″ W x 29″ D


ACiQ 154,000 BTU 80% Gas Furnace Specs

  • 154,000 BTU input with 80% AFUE efficiency (123,200 BTU output)
  • Budget-friendly furnace with strong heating performance for large spaces
  • Single-stage burner paired with quiet ECM multi-speed blower
  • Multi-positional design: upflow, downflow, or horizontal installation
  • Designed for 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

At $1,247, this furnace delivers 123,200 BTUs of output — enough to heat large spaces through sustained cold. Compared to the cost of emergency heating during a multi-day outage, or the repeated repair bills from underpowered units, this is a one-time purchase that provides years of reliable service. When you factor in the 18-speed ECM motor's efficiency over standard PSC motors, the long-term operating cost drops further. This isn't a throwaway unit — it's built for the long haul on properties where heat isn't optional.
Big-box stores sell furnaces — they don't size them for your actual space or verify compatibility with your fuel type and venting setup. Off Grid Vault provides a free system design consultation with engineers who understand off-grid and remote installations. We confirm that the BTU output matches your square footage, insulation level, and climate zone before you buy. If something doesn't perform as specified, our 30-day performance guarantee covers uninstalled returns. We are accountable after the offer — not just at the register.
This unit ships pre-configured for natural gas, but an optional LP conversion kit is available to run it on propane. Your installer will swap the burner orifices and adjust the gas valve to match propane's higher pressure requirements. The 1/2 inch NPT gas connection and 13.6 inch WC maximum inlet pressure are standard for both fuel types once converted. If you are unsure about compatibility with your existing propane system or venting, contact us for a free consultation — we will confirm the fit before you purchase.
80% AFUE means 123,200 BTUs of heat from 154,000 BTUs of fuel input — that is real, usable warmth. The tradeoff is metal flue venting instead of PVC, which is straightforward for most installations. A 90%+ model gains efficiency but adds condensate drainage complexity and higher upfront cost. For off-grid properties where installation simplicity and fewer failure points matter, 80% AFUE is a proven, field-tested choice. If your install requires PVC venting, then yes — step up to a 90%+ unit. Otherwise, this furnace delivers honest, dependable heat without unnecessary complexity.
We ship free on all orders, including freight delivery for a 168 lb furnace. Lead times depend on current stock — contact us for the most accurate estimate. Installation itself requires a licensed HVAC technician familiar with gas furnace hookups, gas line sizing, and metal flue venting. For off-grid properties, factor in the time to run gas lines from your propane tank or natural gas connection. We recommend scheduling your installer before the unit arrives to minimize downtime, especially heading into cold weather months.
For installed systems, warranty claims are handled directly through Off Grid Vault as an authorized dealer — you deal with us, not a manufacturer ticket queue. This furnace carries ACiQ's standard manufacturer warranty on the heat exchanger and components. The single-stage burner and direct-drive ECM motor are straightforward designs with fewer failure points than complex multi-stage systems. If you experience any issue, contact our team first. We understand off-grid installations and can help troubleshoot before dispatching a technician, saving you time and money on remote properties.
SKU: N80MSN1552420A Category: Brand:

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. This furnace is no exception.

30-Day Performance Guarantee If it doesn't perform as specified, we make it right — uninstalled returns accepted within 30 days in original packaging.
Free Shipping Ships free to your door, including LTL freight on large units — no surprise charges at checkout.
Authorized Dealer Support Warranty claims handled directly through us as an authorized dealer. Real people, not a ticket queue.

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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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