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20,000-BTU Comfort Glow Blue Flame Vent-Free Gas Wall Heater
- Mfg.#
- CGS259
- Sku#
- 4114476
- POWERFUL HEATING PERFORMANCE: This Comfort Glow gas heater for indoor use delivers 20,000 BTUs of blue flame heat, efficiently warming spaces up to 800 sq. ft., making it ideal for homes, offices, and garages.
- DUAL FUEL OPTIONS: Works with both natural gas and liquid propane, giving you flexibility in fuel choice. This indoor wall heater provides reliable heat without needing electricity.
- FLEXIBLE INSTALLATION OPTIONS: Heater comes ready for wall mounting. Floor Mounting Kit (20-5345 - sold separately) also available to convert wall heater to a floor unit for increased portability.
- VENT FREE: This ventless gas heater provides 99.9% fuel efficiency, making it an environmentally friendly and cost-effective option for indoor spaces. No need for an external vent or chimney.
- BLUE FLAME HEATING: Ambient blue flame gas heaters provide a beautiful blue flame with dancing yellow highlights throughout. Not only a relaxing focal point, but these ambient flame heaters provide clean, convective heat which is best for whole room heating.
* Estimated stock levels as of Thu, Apr 2, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
Comfort Glow Blue Flame Vent-Free 20,000 BTU Gas Heater for Indoor Use, Natural Gas/LP, 800 Sq. Ft. Heat, Electric Ignition, 99.9% Efficient
The Comfort Glow Blue Flame Vent-Free Heater is a powerful and efficient propane or natural gas heater for indoor use, delivering 20,000 BTUs to heat areas up to 800 sq. ft. With dual fuel capability, this versatile natural gas heater or liquid propane heater provides flexibility for various spaces like homes, small garages, and offices. Its ambient blue flame is an effective heat source that also provides a relaxing focal point, making it a reliable space heater that operates without the need for electricity.
This ventless gas heater is 99.9% fuel efficient and simple to install, requiring no external vents. Equipped with safety features such as an Oxygen Depletion Sensor (ODS) and over-pressure safety device, it offers peace of mind. The built-in thermostat allows easy heat control, and the electric ignition ensures hassle-free operation. With compact dimensions (24" x 21" x 10.30"), it's the perfect propane wall heater for indoor use or natural gas heater indoor solution.
Heater comes ready for wall mounting. Floor Mounting Kit (sold separately) also available to convert wall heater to a floor unit for increased portability.
Specifications
General
| BTU | 20000 |
|---|---|
| Color | Beige, Black |
| Color Family | Brown / Beige / Tan |
| Coverage | 800 sq ft |
| Fuel Type | Dual: Natural Gas / Propane |
| Heating Area (Sq Ft ) | 800 |
| Includes | Wall-mounting kit |
| Safety Features | Safe watch pilot / ODS system, over pressure safety device |
| Type | Gas Wall Heater |
Dimensions
| Depth | 10.3 in |
|---|---|
| Height | 24 in |
| Width | 21 in |
Manufacturing Details
The following information is subject to change without notice
| Manufacturer Warranty | 2 yr |
|---|---|
| Prop 65 Warning |
WARNING - CALIFORNIA RESIDENTS ONLY: This product and the fuels used to operate this product (liquid propane or natural gas), and the products of combustion of such fuels, can expose you to chemicals including benzene, which is known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
|
| Shop USA | No |
Label Information
| Certification, Codes, Standards | CSA US |
|---|
