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 2.2. The Comfort Glow DVN17 Direct Vent Heater leads on value, controls and warranty. The Comfort Glow DVN17 Direct Vent Heater costs $491 less ($498 vs $989).
Williams 1403822 Direct Vent Furnace
#13 in Direct ventFull review
For a small room or cabin on natural gas that needs heat through outages at the lowest price. Add the wall thermostat and expect higher gas bills than a sealed electronic unit.
Amazon $989$989
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 value ($29.29 per 1,000 BTU ($498, 17,000 BTU) vs $70.64 per 1,000 BTU ($989, 14,000 BTU)), controls (thermostat vs manual control, push button ignition) and warranty (2-year warranty vs 1-year warranty).
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 1403822 Direct Vent Furnace |
|---|---|---|
| Overall rating | 3.3/5 | 2.2/5 |
| Value 30% | 100 $29.29 per 1,000 BTU ($498, 17,000 BTU) | 60 $70.64 per 1,000 BTU ($989, 14,000 BTU) |
| Heat output 15% | 23 17,000 BTU/hr | 13 14,000 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 1403822 Direct Vent Furnace | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Direct vent |
| Heat type | Furnace | Furnace |
| Maximum input | 17,000 BTU/hr | 14,000 BTU/hr |
| Heating area claim | 500 sq ft | - |
| Efficiency | - | 65% 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 |