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ACiQ 66,000 BTU Multi-Positional Gas Furnace

Reliable 66,000 BTU Heating for Off-Grid and Rural Homes

52,800 BTUs usable heat — Reliable warmth through the coldest months
Dual fuel capability — Natural gas standard, propane with conversion kit
18-speed ECM blower motor — Consistent airflow at lower electrical draw
Three installation configurations — Upflow, downflow, or horizontal to fit your space
AHRI certified performance — Verified heating output you can trust
  • FREE Shipping -- Ships free on all orders, including LTL freight
  • FREE System Design Consultation -- Verify inverter and battery compatibility before you buy

Price range: $852.95 through $969.95

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ACiQ 66,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 66,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
$852.95 $969.95Price range: $852.95 through $969.95

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In the box

  • ACiQ N80MSN0701412A gas furnace
  • Installation documentation
ACiQ 66,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace
ACiQ 66,000 BTU Multi-Positional Gas Furnace
$852.95 $969.95Price range: $852.95 through $969.95

Reliable 66,000 BTU Heating for Off-Grid and Rural Homes

The ACiQ 66,000 BTU furnace delivers 52,800 BTUs of field-tested heating output through a single-stage gas burner and an 18-speed constant torque ECM blower motor. At 80% AFUE, it converts fuel reliably without the complexity of condensing systems — ideal for grid-independent cabins and homesteads where simplicity matters. Multi-positional installation supports upflow, downflow, or horizontal configurations, and the built-to-survive outer casing handles real-world conditions year after year. Runs on natural gas with an optional propane conversion kit. Finance with Affirm — pay as low as $71/month. 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
Multi-Positional Install
52,800 BTU Output
18-Speed ECM Motor
Dual-Fuel Convertible
66,000
Input BTU
80%
AFUE Efficiency
114 lbs
Unit Weight
Heat Your Cabin Without Draining Your Battery Bank

Heat Your Cabin Without Draining Your Battery Bank

Electric baseboard and resistance heat destroy your off-grid battery reserves in hours. The ACiQ 66,000 BTU furnace sidesteps that problem entirely by burning natural gas or propane for heat while drawing only 15 amps through its 0.33 HP ECM blower motor. That means 52,800 BTUs of actual heating output with minimal electrical demand from your inverter and battery bank. Unlike generic marketplace listings that leave you guessing about real-world power draw, this AHRI-certified furnace gives you verifiable specs you can design your grid-independent system around. Pair it with a propane tank and a modest inverter, and you have reliable heat that does not care whether the grid is up or down.

Installs In Whatever Configuration Your Space Demands

Installs In Whatever Configuration Your Space Demands

Not every cabin, basement, or utility room fits a standard upflow furnace. The ACiQ 66,000 BTU unit supports upflow, downflow, and horizontal configurations with cabinet width options of 14, 17.5, or 21 inches. That adaptability matters when you are retrofitting an existing space or building into a tight mechanical room. The silicon nitride hot surface ignitor eliminates pilot light issues, and the direct ignition fires reliably on demand. Metal flue venting is required at 80% AFUE, which keeps the installation straightforward using standard materials available at any local supply house. No proprietary venting, no special-order parts, no headaches.

Constant Torque Blower Keeps Airflow Steady and Quiet

Constant Torque Blower Keeps Airflow Steady and Quiet

The 18-speed multi-speed constant torque ECM blower motor running at 1,050 RPM delivers consistent airflow without the ramp-up surges that strain your inverter. Constant torque technology adjusts motor output in real time to maintain set airflow even as duct static pressure changes with dirty filters or closed registers. At 0.33 horsepower and a 15-amp maximum breaker, this furnace places a modest and predictable load on your standalone electrical system. You know exactly what to size your inverter for, with no hidden surge spikes that could trip your system on a cold morning when everything else is running too.

Compatibility Check

Confirm these conditions before installing the ACiQ 66,000 BTU furnace in your setup.

  • Metal venting installed — PVC is not compatible at 80% AFUE
  • 1/2" NPT gas connection available at the install location
  • 15-amp electrical circuit with dedicated breaker for the unit

Where This Furnace Fits

Built for straightforward heating in setups that demand reliability over complexity.

Off-Grid Cabin Heating
Homestead Workshop
New Build or Retrofit

Full specifications

At a glance

Dimensions
14", 17.5", 21"
Power
.33 HP
Warranty
See product page
Full specifications15 data points across 4 categories

Dimensions

Cabinet Width14", 17.5", 21"
Weight114.00 lbs

Power & Performance

Heating BTU66,000
Usable Heat Output52,800 BTUs
Furnace Efficiency / AFUE80%
Burner StagesSingle
Blower MotorMulti 18-Speed Constant Torque (MCT) ECM Motor
Motor RPM1050
Horsepower.33 HP
Max Breaker Size15 Amps
Maximum Inlet Pressure13.6"wc
Connection1/2" NPT

Materials

Exhaust Flue RequirementMetal

Compliance & Warranty

Low NOx / Ultra Low NOxNot compliant
WarrantySee product page

The Off Grid Vault Promise

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

Free ShippingShips free on all orders, including LTL freight for heavy equipment. No thresholds, no surprises.
30-Day Performance GuaranteeIf it doesn't perform as specified, return it uninstalled in original packaging within 30 days for a full refund.
Free System Design ConsultationOur engineers size your heating setup for your actual space and climate — no guesswork, no incompatible components.

66,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace

The ACiQ 66,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace is an affordable furnace designed to deliver reliable heating performance and reasonable comfort throughout your home. Although it operates at a basic efficiency, it still provides sufficient warmth, even during the coldest parts of the year.

With an input capacity of 66,000 BTUs and an efficiency rating of 80% AFUE, this furnace outputs 52,800 BTUs of usable heat. The 80% AFUE means that 80% of the fuel consumed is converted into heat for your home, while the remaining 20% is lost through flue piping and normal operational waste. Because of this efficiency level, metal venting is required; if plastic/PVC venting is preferred, a 90%+ efficiency model would be necessary. The unit runs on natural gas out of the box but can be converted to propane with an optional LP conversion kit. However, this model is not Low NOx or Ultra Low NOx compliant, and if shipped to California, it may incur an additional mitigation fee.

Versatility is a key feature of the ACiQ 66,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace, as it can be installed in upflow, downflow, or horizontal configurations. This makes it adaptable to a variety of home layouts. Its durable outer casing is designed to resist wear and tear over time, providing long-lasting performance and consistent indoor comfort. Please note, this unit is not approved for use in mobile homes unless additional modifications are made.

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.



44,000 BTU 80% AFUE Single Stage Multi-Positional Gas Furnace

ACiQ 66,000 BTU 80% Gas Furnace Specs

  • Weight: 114.00 lbs
  • Exhaust Flue Requirement: Metal
  • Furnace Efficiency / AFUE: 80%
  • Heating BTU: 66,000
  • Blower Motor: Multi 18-Speed Constant Torque (MCT) ECM Motor
  • Motor RPM: 1050
  • Horsepower: .33 HP
  • Configuration: Upflow/Downflow/Horizontal
  • 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 1/3″ H x 14 3/16″| 17 1/2″ | 21″ W x 29″ D



ACiQ 66,000 BTU 80% Gas Furnace Specs

  • 66,000 BTU input with 80% AFUE efficiency (52,800 BTU output)
  • Cost-effective heating solution for small to medium homes
  • Single-stage burner with multi-speed blower for consistent comfort
  • Multi-positional installation: upflow, downflow, or horizontal
  • Onboard self-diagnostics for easier troubleshooting
  • Durable outer casing for long-term performance
  • Compatible with natural gas; field-convertible to propane with optional LP kit
  • Requires metal flue venting (not compatible with PVC/plastic venting)
  • Not compliant with Low NOx or Ultra Low NOx regulations (CA mitigation fee may apply)
  • Not approved for mobile home use without modifications



Your Satisfaction with ACiQ is Guaranteed:

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

Additional information

Cabinet Width

14", 17.5", 21"

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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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