Cozy

Cozy is a manufacturer of residential gas wall heaters, direct vent heaters, and gravity vented heaters for supplemental and primary heating in residential and light commercial buildings. Williams Furnace Company, with roots to 1916, acquired the Cozy Heating Systems brand in January 2021 and manufactures Cozy products at its 400,000-sq-ft facility in Colton, California. Made in the USA with approximately 90% domestic components. The Cozy product line includes CDV Series direct vent wall heaters (65% AFUE), HEDV high-efficiency direct vent (80% AFUE), C/W Series gravity vented heaters, CF and DVCF Series counterflow and direct vent counterflow heaters, and VC Series console heaters. All CSA certified, ANSI Z21.86 compliant. 1-year parts warranty, 10-year combustion chamber warranty.

Product Lines

Cozy CDV Series Direct Vent Wall Heaters

14,000-30,000 BTU, 65% AFUE, sealed combustion direct vent technology. No electricity required. Draws combustion air from outside and vents directly outdoors through a coaxial flue. Appropriate for backup heat without power and for buildings without electrical service at the heater location.

Cozy HEDV Series High-Efficiency Direct Vent Heaters

25,000-40,000 BTU, 80% AFUE, sealed direct vent combustion. Higher-efficiency alternative to the CDV Series. No electricity required for standard configurations.

Cozy C and W Gravity Series Wall Heaters

22,000-50,000 BTU, 66-70% AFUE, conventional B-vent gravity venting. C Series is propane; W Series is natural gas. No electricity required.

Cozy CF and DVCF Series Counterflow Heaters

35,000-55,000 BTU, 75-76% AFUE. Deliver warm air from the bottom of the unit for under-window and below-grade installations. DVCF Series uses sealed direct vent combustion.

Cozy VC Console Heaters

35,000-50,000 BTU freestanding gravity vented gas heaters for residential supplemental heating without wall recess installation.

Why Contractors Specify Cozy

Heating contractors specify Cozy because the CDV and HEDV direct vent models operate without electricity, providing primary or backup heat where power outages are a concern or electrical service is unavailable at the installation location. Made in the USA at Williams Furnace Company in Colton, California, with approximately 90% domestic components. CSA certified and ANSI Z21.86 compliant. The line covers 14,000-65,000 BTU across direct vent, gravity vent, and counterflow configurations. Warranty: 1-year parts, 10-year combustion chamber.

How to Choose a Cozy Product

The most important decision variables are venting type, BTU heating load, and whether electricity is available. For direct vent with sealed coaxial flue: CDV Series (14,000-30,000 BTU, 65% AFUE) or HEDV Series (25,000-40,000 BTU, 80% AFUE), both no-electricity. For gravity vent with conventional B-vent: C Series (propane) or W Series (natural gas), 22,000-50,000 BTU, no electricity. For counterflow warm air at floor level: CF or DVCF Series, 35,000-55,000 BTU, 75-76% AFUE. For freestanding console placement: VC Console, 35,000-50,000 BTU. Confirm fuel type (natural gas vs. propane) before ordering.

FAQs

Who makes Cozy heaters?
Cozy heaters are manufactured by Williams Furnace Company, which acquired the Cozy Heating Systems brand in January 2021. Williams Furnace Company traces its roots to 1916 and manufactures Cozy and Williams heaters at a 400,000-sq-ft facility in Colton, California, with approximately 90% domestic components.

Do Cozy direct vent heaters require electricity to operate?
Cozy CDV Series and HEDV Series direct vent wall heaters do not require electricity to operate on standard configurations, making them appropriate for backup heat and buildings without electrical service at the heater location. Verify the specific model's electrical requirements.

What is the AFUE rating of the Cozy CDV Series?
The CDV Series is rated at 65% AFUE. The HEDV Series is rated at 80% AFUE, providing a higher-efficiency option where fuel cost reduction is a priority.

What warranty does Cozy offer?
1-year parts warranty and 10-year combustion chamber warranty.

What venting types do Cozy heaters use?
CDV, HEDV, and DVCF Series use sealed direct vent coaxial flue technology. C, W, and CF Series use conventional B-vent gravity venting. The appropriate venting type depends on the building's flue configuration and installation requirements.

What BTU range does the Cozy product line cover?
CDV Series: 14,000-30,000 BTU. HEDV Series: 25,000-40,000 BTU. C and W Gravity Series: 22,000-50,000 BTU. CF and DVCF Series: 35,000-55,000 BTU. VC Console Series: 35,000-50,000 BTU.