What you get
The Comfort Glow GFD3840T Dual-Fuel Vent-Free Gas Fireplace is a vent-free gas fireplace that its maker rates at 26,000 BTU per hour and says heats up to 900 square feet.
Makers rate heating area in their own conditions, so read 900 square feet as a ceiling; the size calculator lists the closest fits for your space.
At full fire it burns about 25 cubic feet of natural gas or about 0.28 gallons of propane an hour (its 26,000 BTU/h divided by EIA's heat content for each fuel).
As a vent-free unit it burns room air and releases its exhaust and moisture into the room, so nearly all its heat stays indoors. Its manual sets a minimum room size for its BTU rating, and some local codes restrict vent-free appliances. Vent-free vs direct-vent.
Fuel, per the listing: dual fuel. Never connect a gas heater to a fuel it isn't set for.
Also on the listing: overall dimensions of 16 in (D) x 38.75 in (W) x 38 in (H) and wood construction.
Warranty, per the listing: 2 year manufacuter defect only.
The figures, from the maker
Each figure is the maker's or the listing's own, with its source marked. A figure the maker doesn't give is shown as not stated.
| Model number | GFD3840T | Retailer |
|---|---|---|
| Power | Dual Fuel - Propane or Natural Gas | Retailer |
| Dimensions (seller) | 16"D x 38.75"W x 38"H | Retailer |
| Material | Wood | Retailer |
| Mounting / installation | Freestanding | Retailer |
| Heat output (maker) | 26,000 BTU/h | Retailer |
| Features (seller) | Adjustable Thermostat, Dual Fuel - Natural Gas or Liquid Propane, Safety Shut Off | Retailer |
| Model name | Comfort Glow Dual Fuel Ventless Gas Fireplace 26000 BTU Heats 900 sq ft - Pewter Oak | Retailer |
| Warranty | 2 year manufacuter defect only. | Retailer |
| Heats up to (maker) | 900 sq ft | Retailer |
| Venting | ventless | Retailer |
| Fuel | dual fuel | Retailer |
| Thermostat | adjustable thermostat | Retailer |
| Blower | optional blower | Retailer |
Is it the right heater for the room?
Pick it when
- Supplemental heat for one room
- Homes with gas or propane
Pass on it when
- Bedrooms and small rooms the manual excludes
- Places where local code bans vent-free heaters
Where it wins, where it gives ground
Wins
- 26,000 BTU/h
- No chimney needed
- dual fuel
Gives ground
- Adds moisture to the room
- Restricted by some local codes
- Needs a gas line
Know before you install
- Figures are the maker's own and are rated in the maker's conditions. Installation, venting, chimney, gas and electrical work follow the manual and local code, carried out by a qualified installer.
Heaters to weigh against it
Other gas stoves, fireplaces and inserts in the same heat range
- Empire VFS42FB0F Vent-Free Gas Fireplace
- Superior VRT3542 Vent-Free Gas Fireplace
- Comfort Glow GFD4625R Dual-Fuel Vent-Free Gas Fireplace
- Empire MV 34 Natural Gas Vent-Free Gas Fireplace
Every gas stoves, fireplaces and inserts on one chart · All Comfort Glow models listed
Buying this model
The button opens this exact model's listing. Prices and stock change, and installation parts are usually sold separately; check the box contents and the manual's venting list before you order.
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Questions about this model
How much gas does the Comfort Glow GFD3840T Dual-Fuel Vent-Free Gas Fireplace use?
Does the Comfort Glow GFD3840T Dual-Fuel Vent-Free Gas Fireplace need a vent or chimney?
Bottom line
Pick it for supplemental heat for one room.