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Avenger

Avenger FDT2IRA Dual Fuel Infrared Space Heater

★★★★★3.6 (9 reviews)

20,000 BTU dual-fuel infrared heat for up to 950 sq. ft. — no electricity, no shortcuts on safety.

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Overview

Stay Warm and Comfortable with Dual Fuel Efficiency

The FDT2IRA Ventless Dual Fuel Infrared Space Heater provides efficient and reliable heating for your home. With the ability to operate on both natural gas and propane, this heater offers flexibility and convenience. It features a thermostat control, multiple heat settings, and safety features for peace of mind.

Specifications:

  • Maximum BTU (Natural Gas): 20,000
  • Maximum BTU (Propane Gas): 18,000
  • Heating Area: Up to 950 Sq. Ft.
  • Fuel Type: Natural Gas or Liquid Propane
  • Thermostat Control: Yes, with micro heat adjustments
  • Heat Settings: 5
  • Efficiency: 99.9%
  • Safety: O. D. S. (Oxygen Depletion Sensor) with automatic shut-off
  • Ignition System: Push Button Piezo Ignition System
  • Power Requirement: No electricity required (120V outlet for optional blower system)
  • Dimensions: 25.7" H x 18.46" W x 9.84" D
  • Weight: 22.9 lbs
  • Accessories: Wall Mounting Bracket, Base Feet

Key Features

TECHNOLOGY

This compact Infrared mini heater produces 20000 Maximum BTU using Natural Gas or Liquid Propane and heats up to 950 sq. ft. area; This is a great heater for office, bedroom, living room, and other residential use

DEPENDABLE

Thermostat control on the heater offers High/Medium/Low Thermostat Control; Ideal for greater heat flow that could add a warm atmosphere as a small space heater

STYLISH

Without compromising function for beauty, this versatile small heater has been redesigned for a slimmer and modernized profile to effortlessly fit into your home; Mount on your wall or place your floor with Base Feet (Included)

SAFE

Push button ignition with built-in pilot oxygen depletion sensor (ODS) immediately shuts down the garage heater if carbon monoxide or lack of oxygen is detected; ANSI Certified to ensure safety

CONVENIENT

No electricity is required for this personal heater, making it perfect for power outages or any in-house emergencies

Pros & Cons

👍 Pros

  • 20,000 BTU on natural gas (18,000 on propane) heats up to 950 sq. ft. effectively — a meaningful output for large rooms, workshops, or open-plan spaces without a secondary heat source.
  • No electricity required for core operation makes this a reliable backup heating solution during power outages, which is the scenario where a space heater matters most.
  • The built-in ODS safety shutoff adds a layer of protection that basic radiant propane heaters lack — critical for any ventless combustion device used indoors.
  • Both wall mount bracket and floor base feet are included, so installation flexibility costs nothing extra.
  • The 99.9% efficiency rating means nearly all fuel combustion converts directly to heat output with minimal waste.

👎 Cons

  • At 22.9 lbs and dimensions of 25.7" H × 18.46" W × 9.84" D, this is not a heater you'll reposition casually — once mounted or placed, it stays put.
  • "Ventless" creates real compliance complexity: many municipalities and building codes restrict or prohibit ventless gas appliances indoors, requiring homework before installation.
  • Natural gas BTU output (20,000) drops to 18,000 on propane — not a major gap, but worth noting if propane is your primary fuel source and you're sizing the heater to the space.
  • The optional blower system that improves heat distribution requires a separate 120V outlet — making the "no electricity" claim conditional on whether you want forced-air circulation.
  • Micro-heat thermostat adjustments are mechanical rather than digital — precise set-point temperature control is not a feature of this unit.

Frequently Asked Questions

Yes — the FDT2IRA is factory-built to run on either natural gas or liquid propane. However, switching fuels typically requires a conversion orifice change. Confirm with Avenger's documentation whether a conversion kit is included or needs to be ordered separately before assuming a tool-free swap.
No electricity is required for the heater itself to ignite and run — the push-button piezo ignition is self-contained. An optional blower system can be added for improved heat distribution, and that accessory does require a standard 120V outlet, but the core heating function works without any electrical connection.
The ODS continuously monitors oxygen levels and automatically shuts down the heater if oxygen drops below a safe threshold — the primary safety concern with ventless combustion appliances. That said, "ventless" does not mean sealed — adequate room air exchange is still required. Check local codes before using ventless gas appliances indoors, as some jurisdictions restrict them.
The unit offers High/Medium/Low heat settings plus micro heat adjustments via the thermostat. It will cycle to maintain the set temperature range, but this is a mechanical thermostat system, not a digital programmable controller — expect reasonable temperature maintenance, not degree-level precision.
Yes — a wall mounting bracket is included in the box. Base feet for floor placement are also included, giving you full flexibility to choose your installation position without additional hardware purchases.

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