Comfort Glow DVN08 Direct Vent Heater
#10 in Direct ventFull review
For a single small bedroom or bathroom on natural gas where a low price and heat during outages matter more than automatic control.
Amazon $283.06$283.06
The Comfort Glow DVN08 Direct Vent Heater rates 2.7 among direct vent gas wall heaters; the Dyna-Glo BF10NMDG-4 10K Blue Flame rates 1.9 among vent-free ones. The Dyna-Glo BF10NMDG-4 10K Blue Flame costs $107.20 less ($175.86 vs $283.06).
Dyna-Glo BF10NMDG-4 10K Blue Flame
#15 in Vent-freeFull review
A small manual heater for one natural gas room, including a bedroom where local code allows vent-free heat. Choose a thermostat model if you want it to hold a set temperature.
Amazon $175.86$175.86
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.
Scores side by side
These two sit in different venting classes (direct vent and vent-free), and each is scored against the reference points for its own class, so a rating says how well each does among its own venting peers. How we rank explains each factor.
| Factor weight | Comfort Glow DVN08 Direct Vent Heater | Dyna-Glo BF10NMDG-4 10K Blue Flame |
|---|---|---|
| Overall rating | 2.7/5 | 1.9/5 |
| Value 30% | 92 $35.38 per 1,000 BTU ($283.06, 8,000 BTU) | 25 $17.59 per 1,000 BTU ($175.86, 10,000 BTU) |
| Heat output 15% | 0 8,000 BTU/hr | 0 10,000 BTU/hr |
| Controls 20% | 0 manual control, push button ignition | 25 electronic ignition |
| Fuel 5% | 0 natural gas only | 0 natural gas only |
| Warranty 30% | 25 2-year warranty | 0 1-year warranty |
Specifications
| Comfort Glow DVN08 Direct Vent Heater | Dyna-Glo BF10NMDG-4 10K Blue Flame | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Vent-free |
| Heat type | Furnace | Blue flame |
| Maximum input | 8,000 BTU/hr | 10,000 BTU/hr |
| Minimum input | - | 5,000 BTU/hr |
| Heating area claim | 250 sq ft | 300 sq ft |
| Fuel and controls | ||
| Fuel | Natural gas | Natural gas |
| Thermostat | No | No |
| Blower | No | No |
| Ignition | Push button | Electronic (battery) |
| Needs an outlet | No | No |
| Oxygen depletion sensor | - | Yes |
| Build | ||
| Weight | 23 lb | - |
| Warranty | 2 years | 1 year |