Comfort Glow DVN17 Direct Vent Heater
#6 in Direct ventFull review
A strong value for heating a living room or small apartment on natural gas with automatic temperature control and no need for power.
Amazon $498$498
The Comfort Glow DVN17 Direct Vent Heater is the better gas wall heater overall, rated 3.3 to 2.5. The Comfort Glow DVN17 Direct Vent Heater leads on controls, value and warranty. The Williams 2203822 Direct Vent Furnace wins on heat output. The Comfort Glow DVN17 Direct Vent Heater costs $651 less ($498 vs $1,149).
Williams 2203822 Direct Vent Furnace
#12 in Direct ventFull review
For a living area or small house on natural gas where heat during outages and a low price matter most. Budget for the thermostat and a licensed installer.
HVACDirect $1,149$1,149
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Comfort Glow DVN17 Direct Vent Heater for controls (thermostat vs manual control, push button ignition), value ($29.29 per 1,000 BTU ($498, 17,000 BTU) vs $52.23 per 1,000 BTU ($1,149, 22,000 BTU)) and warranty (2-year warranty vs 1-year warranty).
- Choose the Williams 2203822 Direct Vent Furnace for heat output (22,000 BTU/hr vs 17,000 BTU/hr).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every direct vent gas wall heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Comfort Glow DVN17 Direct Vent Heater | Williams 2203822 Direct Vent Furnace |
|---|---|---|
| Overall rating | 3.3/5 | 2.5/5 |
| Value 30% | 100 $29.29 per 1,000 BTU ($498, 17,000 BTU) | 74 $52.23 per 1,000 BTU ($1,149, 22,000 BTU) |
| Heat output 15% | 23 17,000 BTU/hr | 40 22,000 BTU/hr |
| Controls 20% | 50 thermostat | 0 manual control, push button ignition |
| Fuel 5% | 0 natural gas only | 0 natural gas only |
| Warranty 30% | 25 2-year warranty | 0 1-year warranty |
Specifications
| Comfort Glow DVN17 Direct Vent Heater | Williams 2203822 Direct Vent Furnace | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Direct vent |
| Heat type | Furnace | Furnace |
| Maximum input | 17,000 BTU/hr | 22,000 BTU/hr |
| Heating area claim | 500 sq ft | - |
| Efficiency | - | 67% AFUE |
| Fuel and controls | ||
| Fuel | Natural gas | Natural gas |
| Thermostat | Yes | No |
| Blower | No | No |
| Ignition | Push button | Push button |
| Needs an outlet | No | No |
| Build | ||
| Weight | 43 lb | - |
| Warranty | 2 years | 1 year |