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aciq|SKU:N80MSN1552420A

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

154,000 BTU Heating for Grid-Independent Comfort

123,200 BTUs delivered — Real heat output at 80% AFUE efficiency
18-speed ECM blower — Constant torque motor for steady airflow
Multi-positional install — Upflow, downflow, or horizontal mounting
Natural gas or LP ready — Pre-configured for NG with LP kit available
  • FREE System Design Consultation -- Our engineers size your system for your actual consumption
  • FREE Shipping -- LTL freight included on all orders, 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 manual
ACiQ 154,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 154,000 BTU Gas Furnace — 123,200 BTU Heat Output, Multi-Positional Install
$1,246.95

154,000 BTU Heating for Grid-Independent Comfort

When the grid drops and winter hits hard, you need a furnace that delivers without hesitation. The ACiQ 154,000 BTU gas furnace pushes 123,200 BTUs of real heat output through an 18-speed constant torque ECM blower motor — field-tested for reliable performance in extreme cold. Built-to-survive with a durable outer cabinet, this unit supports upflow, downflow, or horizontal mounting so it adapts to your off-grid build. Runs on natural gas out of the box with an optional LP conversion kit for propane setups. Requires metal flue venting.

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123,200 BTU Output
Multi-Position Install
18-Speed ECM Motor
Natural Gas Ready
154,000
Input BTU
80%
AFUE Efficiency
1,965
Max CFM
Rated Output You Can Rely On When Temperatures Drop

Rated Output You Can Rely On When Temperatures Drop

When a four-day blackout hits in January, undersized heating equipment becomes a genuine survival problem. The ACiQ furnace delivers its full 123,200 BTU rated output — not a peak number on a datasheet that vanishes under real-world load. At Off Grid Vault, we only carry equipment we would install on our own cabins. This unit earned its place because it converts 80% of fuel directly into usable heat through a straightforward single-stage burner, with no complex electronics that fail when you need them most. For remote cabins and homesteads where the nearest technician is hours away, simple and proven beats complicated and fragile every time.

Install It Your Way — Upflow, Downflow, or Horizontal

Install It Your Way — Upflow, Downflow, or Horizontal

Not every cabin or homestead has a standard mechanical room. The ACiQ 154,000 BTU furnace supports upflow, downflow, and horizontal configurations, so it adapts to your actual floor plan instead of forcing you to build around it. The direct-drive .75 HP ECM motor pushes up to 1,965 CFM at 1,050 RPM across 18 selectable speeds, giving you fine control over airflow without belt maintenance. Whether you are heating a large off-grid home or outfitting a workshop that sees subzero nights, this furnace fits the space you have. Metal flue venting is required for all 80% AFUE units — plan your exhaust route accordingly before ordering.

Straightforward Fuel Setup With Proven Single-Stage Combustion

Straightforward Fuel Setup With Proven Single-Stage Combustion

This furnace ships pre-configured for natural gas with a 1/2-inch NPT connection and maximum inlet pressure of 13.6 inches water column. If your off-grid property runs on propane, an optional LP conversion kit is available. The single-stage burner keeps operation simple: it fires at full capacity when heat is called for and shuts off when the thermostat is satisfied. No modulating valves to troubleshoot, no staging logic to program. At 115 volts on a single-phase 15-amp circuit, it runs on standard household power or a modest inverter output. Note: this model does not meet Low NOx or Ultra Low NOx requirements and may incur additional fees if shipped to California.

Compatibility Check

Verify these conditions before ordering to ensure this furnace integrates with your setup.

  • Existing metal flue venting installed (PVC/plastic not compatible with 80% AFUE)
  • 15-amp electrical circuit available at 115v 1-phase 60 Hz
  • Installation location accommodates upflow, downflow, or horizontal configuration

Where This Furnace Performs

Designed for serious heating demands in locations where reliability matters more than bells and whistles.

Off-Grid Homesteads
Remote Cabins
Backup Heat Systems
Workshop & Outbuilding

Full specifications

At a glance

Dimensions
See product page
Power
.75 HP
Compliance
Not compliant — additional fees may apply if shipped to California
Full specifications17 data points across 4 categories

Dimensions

Weight168.00 lbs
WidthSee product page
HeightSee product page
DepthSee product page

Power & Performance

Heating BTU154,000
Output BTU123,200
Furnace Efficiency / AFUE80%
Blower MotorMulti 18-Speed Constant Torque (MCT) ECM Motor
Drive TypeDirect
Maximum CFM1965
Motor RPM1050
Horsepower.75 HP
ConfigurationUpflow/Downflow/Horizontal
Electrical115v 1 Phase 60 Hz
Max Breaker Size15 Amps

Materials

Exhaust Flue RequirementMetal

Compliance & Warranty

Low NOx ComplianceNot compliant — additional fees may apply if shipped to California

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 on all orders, including LTL freight on large systems. No minimums, no thresholds.
Authorized Dealer SupportWarranty claims handled directly through us — no ticket queue, no runaround.
★★★★★
“Installed this in my 1,800 sq ft shop in northern Montana. Single-digit temps for two weeks straight and the ACiQ kept the building at 68 degrees without straining my 48V battery bank. The 18-speed ECM motor is noticeably quieter than my old PSC blower. Straightforward install, no surprises.”
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 123,200 BTUs of actual output, this unit heats large spaces effectively without paying for 90%+ efficiency complexity you may not need. If your homestead has metal flue venting already in place, an 80% AFUE furnace avoids the cost of retrofitting to PVC venting. Factor in the 18-speed ECM motor — which reduces electrical draw compared to older PSC motors — and this furnace delivers strong heating value for properties where straightforward single-stage operation is the right fit.
Off Grid Vault vets every product for real-world performance before listing it. ACiQ furnaces use proven single-stage combustion architecture with constant torque ECM motors — the same fundamental technology found in field-tested residential heating for decades. We stand behind what we sell with a 30-day performance guarantee. If the unit does not perform to its rated specifications, we make it right. As an authorized dealer, warranty claims go through us directly, not through a faceless ticket queue.
The unit runs on 115 volts, single-phase, 60 Hz with a 15-amp maximum breaker. That means it draws under 1,725 watts of electrical power — well within the capacity of most off-grid inverter setups. The .75 HP ECM motor is more efficient than older motor types, reducing your battery bank load during heating cycles. For system design help matching this furnace to your solar and battery configuration, our free consultation service sizes your complete setup around actual consumption data.
We ship free on all orders, including LTL freight for heavy equipment like this 168-pound furnace. Lead times depend on current stock, but we do not use artificial countdowns — contact us for an honest delivery estimate based on your location. Installation itself is straightforward for a qualified HVAC technician given the multi-positional design and standard 1/2-inch NPT gas connection. The single-stage burner requires no complex commissioning, so your setup time is minimal once the unit arrives on site.
It depends on your venting infrastructure and climate. 80% AFUE means 123,200 BTUs of actual heat from 154,000 BTU input, with the remaining 20% exiting through a metal flue. If your cabin or homestead already has metal venting in place, upgrading to a 90%+ condensing furnace means paying for PVC retrofit — often $1,500 or more in materials and labor. For harsh-winter locations where the priority is raw heating output over maximum efficiency, a single-stage 80% unit delivers proven, field-tested performance without the condensate drainage complexity of higher-efficiency models.
This model is not compliant with Low NOx or Ultra Low NOx regulations enforced in California. If shipped to a California address, additional fees may apply depending on local jurisdiction. We recommend checking your local code requirements before ordering. For California buyers who need compliant heating, contact our team — we can help identify the right furnace that meets your regional standards while still delivering the off-grid performance you need.
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 on all orders, including LTL freight on large systems. No minimums, no thresholds.
Authorized Dealer Support Warranty claims handled directly through us — no ticket queue, no runaround.

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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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