Rinnai EnergySaver EX17DTN
#3 in Direct ventFull review
For a large room or small home zone that needs steady, thermostat controlled heat. The EX22DTN is worth the small step up if the space is borderline.
Amazon $2,005.92$2,005.92
The Rinnai EnergySaver EX17DTN is the better gas wall heater overall, rated 3.7 to 3.3. The Rinnai EnergySaver EX17DTN leads on warranty and controls. The Comfort Glow DVN17 Direct Vent Heater wins on value. The Comfort Glow DVN17 Direct Vent Heater costs $1,507.92 less ($498 vs $2,005.92).
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
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 Rinnai EnergySaver EX17DTN for warranty (5-year warranty vs 2-year warranty) and controls (thermostat, blower, electronic ignition vs thermostat).
- Choose the Comfort Glow DVN17 Direct Vent Heater for value ($29.29 per 1,000 BTU ($498, 17,000 BTU) vs $120.11 per 1,000 BTU ($2,005.92, 16,700 BTU)).
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 | Rinnai EnergySaver EX17DTN | Comfort Glow DVN17 Direct Vent Heater |
|---|---|---|
| Overall rating | 3.7/5 | 3.3/5 |
| Value 30% | 35 $120.11 per 1,000 BTU ($2,005.92, 16,700 BTU) | 100 $29.29 per 1,000 BTU ($498, 17,000 BTU) |
| Heat output 15% | 22 16,700 BTU/hr | 23 17,000 BTU/hr |
| Controls 20% | 100 thermostat, blower, electronic ignition | 50 thermostat |
| Fuel 5% | 0 natural gas only | 0 natural gas only |
| Warranty 30% | 100 5-year warranty | 25 2-year warranty |
Specifications
| Rinnai EnergySaver EX17DTN | Comfort Glow DVN17 Direct Vent Heater | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Direct vent |
| Heat type | Furnace | Furnace |
| Maximum input | 16,700 BTU/hr | 17,000 BTU/hr |
| Minimum input | 8,200 BTU/hr | - |
| Heating area claim | - | 500 sq ft |
| Efficiency | 81% AFUE | - |
| Fuel and controls | ||
| Fuel | Natural gas | Natural gas |
| Thermostat | Yes | Yes |
| Blower | Yes | No |
| Ignition | Electronic (120 V) | Push button |
| Needs an outlet | Yes | No |
| Build | ||
| Weight | 51 lb | 43 lb |
| Warranty | 5 years | 2 years |