The Rinnai EnergySaver EX11DTN is the better gas wall heater overall, rated 3.5 to 2.7. The Rinnai EnergySaver EX11DTN leads on warranty and controls. The Comfort Glow DVN08 Direct Vent Heater wins on value. The Comfort Glow DVN08 Direct Vent Heater costs $1,394 less ($283.06 vs $1,677.06).
For a mid sized room, finished basement or sunroom where you want set-and-forget thermostat control. Buyers who need heat without power should look at a millivolt furnace instead.
Amazon $1,677.06For a single small bedroom or bathroom on natural gas where a low price and heat during outages matter more than automatic control.
Amazon $283.06Prices 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.
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 | Rinnai EnergySaver EX11DTN | Comfort Glow DVN08 Direct Vent Heater |
|---|---|---|
| Overall rating | 3.5/5 | 2.7/5 |
| Value 30% | 23 $152.46 per 1,000 BTU ($1,677.06, 11,000 BTU) | 92 $35.38 per 1,000 BTU ($283.06, 8,000 BTU) |
| Heat output 15% | 3 11,000 BTU/hr | 0 8,000 BTU/hr |
| Controls 20% | 100 thermostat, blower, electronic ignition | 0 manual control, push button ignition |
| Fuel 5% | 0 natural gas only | 0 natural gas only |
| Warranty 30% | 100 5-year warranty | 25 2-year warranty |
| Rinnai EnergySaver EX11DTN | Comfort Glow DVN08 Direct Vent Heater | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Direct vent |
| Heat type | Furnace | Furnace |
| Maximum input | 11,000 BTU/hr | 8,000 BTU/hr |
| Minimum input | 5,500 BTU/hr | - |
| Heating area claim | - | 250 sq ft |
| Efficiency | 81% AFUE | - |
| Fuel and controls | ||
| Fuel | Natural gas | Natural gas |
| Thermostat | Yes | No |
| Blower | Yes | No |
| Ignition | Electronic (120 V) | Push button |
| Needs an outlet | Yes | No |
| Build | ||
| Weight | 42 lb | 23 lb |
| Warranty | 5 years | 2 years |
