Luneashop

Duluth Forge DFS-400T-2TA Dual Fuel Ventless Fireplace 32,000 BTU

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$619.64

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The Duluth Forge DFS-400T-2TA Dual Fuel Ventless Gas Fireplace provides an efficient and stylish heating solution, delivering up to 32,000 BTU to warm spaces up to 139.4 m². Equipped with patented dual-fuel technology, it operates seamlessly on either Natural Gas or Liquid Propane without requiring an external flue or chimney. The included furniture-grade mantel in a toasted almond finish frames a set of six hand-painted ceramic fiber logs that emulate the authentic ambiance of a traditional fire.

Designed for comfort and convenience, this fireplace insert features an integrated thermostat control and reliable battery-assisted Piezo ignition. Safety is built-in with an Oxygen Depletion Sensor that includes automatic shut-off capabilities for complete peace of mind. Assembled in the USA, this vent-free system offers supplemental heat and timeless visual appeal for any living area.

Key Features

Brand	Duluth Forge
Model Number	DFS-400T-2TA
Maximum Heat Output	32,000 BTU
Heating Area	Up to 139.4 m²
Fuel Type	Dual Fuel (Natural Gas or Liquid Propane)
Ignition Type	Battery-assisted Piezo ignition
Log Set	6 hand-painted ceramic fiber logs
Finish	Toasted Almond furniture-grade finish
Safety Feature	Oxygen Depletion Sensor (O.D.S.) with automatic shut-off
Burner Type	Dual precision ported ventless gas burner
Insert Model Number	FDF400T-ZC
Dimensions (H x W x D)	111.8 x 111.8 x 40 cm
Insert Dimensions (H x W x D)	74.9 x 73.9 x 39.6 cm
Compatible Blower Model	QEB100 (sold separately)
Country of Origin	USA

Highlights

32,000 Maximum BTU heats up to 1,500 square feet of living space
Patented Dual Fuel Technology operates off Natural Gas or Liquid Propane
Safety Assurance: O.D.S. (Oxygen Depletion Sensor) included with automatic shut-off
Dual Precision Ported Ventless gas burner
Battery assisted Piezo ignition
6 realistic hand painted Ceramic Fiber Logs
Thermostat Controlled
Toasted Almond Furniture Grade Finish
Gas Fireplace Insert Model#: FDF400T-ZC
Product Dimensions: 44’H x 44’W x 15.75’D
Some assembly required.

Materials & care

Dust the toasted almond furniture-grade wood mantel with a soft, clean cloth. Periodically inspect and gently clean the ceramic fiber logs to ensure burner ports remain clear of debris.

Sizing & fit

The fully assembled mantel measures 111.8 cm H x 111.8 cm W x 40 cm D, and the fireplace insert measures 74.9 cm H x 73.9 cm W x 39.6 cm D, suitable for supplemental heating in rooms up to 139.4 m².

Size chart

29.5′ H x 29.1′ W x 15.6′ D

Compatibility

Blower Sold Separately – Model QEB100

How to use

Operate the fireplace using the battery-assisted Piezo ignition to light the dual precision ported burner. Set your desired room temperature using the integrated thermostat control to maintain steady supplemental heat.

What's included

Fireplace Wood Mantel – Qty. 1
Ventless Fireplace Insert – Qty. 1
Ceramic Fiber Log Set – Qty. 1
Hardware Pack – Qty. 1

Frequently asked questions

What fuel types are compatible with this fireplace?

This unit features patented Dual Fuel Technology and can operate on either Natural Gas or Liquid Propane.

Does this fireplace require an external chimney or venting?

No, this is a ventless fireplace system that does not require an outside chimney or ductwork.

What safety features are integrated into the unit?

The fireplace includes a built-in Oxygen Depletion Sensor (O.D.S.) designed to automatically shut off the unit if oxygen levels drop below safe thresholds.

What is included in the package?

The package includes one fireplace wood mantel, one ventless fireplace insert, a 6-piece ceramic fiber log set, and a hardware pack.

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We offer free shipping on eligible orders. Orders are typically processed within 1 business day and transit normally takes 3–5 business days.

Returns & Refunds+

Eligible unused products may be returned within 30 days of delivery. Products must meet the conditions stated in our Refund Policy.

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Warranty coverage against manufacturing defects for eligible Luneashop products.

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