Hi-Efficient Wall Furnaces

Cozy High-Efficient Direct Vent Furnaces are a perfect heating solution for single-family residential, rental, vacation homes, apartment and below grade heating applications. They mount easily on any outside wall or, if vent extensions are used, on inside walls for central placement within the living space. The sealed combustion chamber draws air for combustion from outside and exhausts through a concentric vent-pipe system to the outside - retaining heat and maintaining interior air quality. The 24 volt, draft induced units include a standard vent kit that can be cut to fit wall thicknesses from 5"- 32" and includes an external vent cap which eliminates the need for expensive venting and unnecessary labor. Enjoy 80+% AFUE efficiency by selecting a High-Efficient Direct Vent Furnace from Cozy, the trusted name in zone heating.

Product Features

Wall Thermostat
24 Volt wall thermostat (115 volt required)

Ignition Module
Transistorized and self diagnosing

Combustion Chamber
Tubular / aluminized and warranted for 10 years

Sealed Combustion
Draws no room air and exhausts unburned flue products to the outside

Flame Proving
Automatic draft induced control assures maximum efficiency and safety

10 Year Warranty
Cozy offers a 10 Year Warranty on the heater exchanger.


WARNING: This product can expose you to chemicals including Chromium, which is known to the State of California to cause cancer, and Lead, which is known to the state of California to cause birth defects or reproductive harm. For more information, go to www.P65Warnings.ca.gov

Model Specifications

Model #HEDV253A
Type GasNatural
BTU Input / Hr25000
Type Control24 Volt
Cabinet Dimensions
Depth9-3/4" *
Weight100 Ibs
Center Vent to Floor12-1/2" adi.
Gas Connection3/8"
*L.P. Conversion Kit49615
High Altitude Kit #49810

* Dimensions do not include 5" trim kit. Total depth = 14-3/4

5’ Vent Exhaust Kit
Model #: HEVK5 Weight: 9 lbs
5’ Vent Enclosure Kit
Model #: HEVE5 Weight: 23 lbs
90 Degree Elbow Kit
Model #: HEEL1 Weight: 1 lb
Remote Contral Thermostat
Model #: 3003P Weight: 1 lb
  • 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.