Product_GW
GWF

Gravity Wall Furnace

Cozy Gravity Wall Furnaces mount on any inside or outside wall (single wall only), providing both circulated and radiant heat in an economical package. Available in single or dual wall models, each fits between any standard 16” center stud space. Available in 25,000, 35,000 and 50,000 BTU’s, Cozy Gravity Wall Furnaces provide ample heating for new constructions, additions, and other hard to heat areas.

With self-energizing controls for use during power outages, heavy gauge steel grill to eliminate heat warp, and an optional fan accessory kit, Cozy Gravity Wall Furnaces are a top choice of contractors everywhere.

Product Features

Neutral Baked Enamel Finish
Resists fading and cleans easily with a damp cloth

Resettable Blocked Flue Safety Device
Automatically shuts the unit off in the event of flue blockage or incorrect vent installation

“Unibody” Grill Construction
Heavy gauge steel eliminates heat warpage

Self Energizing Controls
Provide their own power, eliminating heat loss even during a power failure

430 Stainless Steel, Ported Burner
Provides quiet ignition/extinction and excellent flame characteristics for Natural and LP gas

Low BTU Pilot
Durably constructed of stainless steel and provides maximum efficiency during standby

Continuous Seam Welded Combustion Chamber
Maximizes heat transfer and is warranted for ten (10) years

Optional Thermostatically Controlled Fan
Available for single and dual wall furnaces to enhance air circulation

Wall Thermostat Standard
Built-in Bulb Stat control

GWF-room
Model SpecificationsAccessoriesImportant

SINGLE WALL
DUAL WALL

Natural
W255 / W355
W505

LP
W256 / W356
W506

Type Control
M. Volt / M. Volt
M. Volt

BTU Input / Hr
25000 / 35000
50000

Vent Size (Oval)
4”/ 4”
4”

Gas Inlet
1/2” / 1/2”
1/2”

Unit Dimensions

Width
16-1/2” / 16-1/2”
16-1/2”

Height
68-3/8” / 68-3/8”
68-3/8”

Depth
6-1/2” / 6-1/2”
6-1/2”

Shipping Weight
90 lbs / 90 lbs
134 lbs

Rear Register Kit

Model
40542 / 40542
N/A

Weight
5 lbs / 5 lbs
N/A

Fan Kit

Model
WFF81 / WFF81
WFF81*

Weight
10 lbs / 10 lbs
10 lbs

*One or two fan kits may be used on dual-wall furnace.

GWF-fan-kit_WFF81C
Automatic Fan Kit
Model #: WFF81C#
Weight: 10 lbs
GWF-rear-register-kit_40542
Rear Register Kit
Single Wall Only
Model #: 40542A
Weight: 5 lbs
GWF-freestanding-kit_FSKA
Single Wall Only
Model #: FSKA
Weight: 24 lbs
CDV-bulb-stat-kit_BBSK
GWF Bulb Stat Kit
Model #: BBSK
Weight: 1 lb
4OVK 4in BWoval Vent Kit
4” BW Oval Vent Kit
Model #: 4OVK
Weight: 9 lbs
CDV-remote-control-thermostat_3003P
Remote Control Thermostat
Model #: 3003P
Weight: 1 lb

important Important
  • Dual Wall Units will accept two fan kits.
  • Wall furnace components must not be interchanged or mixed to make a complete furnace.
  • Combustion chamber and burners carry a ten-year limited warranty. All other parts carry a one-year limited warranty.
  • Massachusetts Approval G3-0613-640.
  • Read the owner’s manual before use/installation.
  • Check local codes and ordinances for permitted uses.
  • Installation and servicing recommended by a qualified service person.
  • Please consult installation manual for clearances prior to installation.
  • Venting must comply with the installation manual.
  • Please read the warranty for any limitations or disclaimers.
  • Cozy Heating Systems LLC reserves the right to amend product specifications without notice.