The Empire DV35 Direct Vent Wall Furnace is the better gas wall heater overall, rated 3.0 to 2.7. The Empire DV35 Direct Vent Wall Furnace leads on controls and heat output. The Williams 3003822 Direct Vent Furnace wins on value. The Williams 3003822 Direct Vent Furnace costs $718.99 less ($1,290 vs $2,008.99).
For a cabin or large room that needs serious heat that keeps running when the power goes out. Rinnai’s modulating units are steadier but quit without electricity.
Amazon $2,008.99A strong value pick for heating a small home or cabin on natural gas with no power needed. Add the wall thermostat for automatic control.
HVACDirect $1,290Prices 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 | Empire DV35 Direct Vent Wall Furnace | Williams 3003822 Direct Vent Furnace |
|---|---|---|
| Overall rating | 3.0/5 | 2.7/5 |
| Value 30% | 69 $57.40 per 1,000 BTU ($2,008.99, 35,000 BTU) | 83 $43 per 1,000 BTU ($1,290, 30,000 BTU) |
| Heat output 15% | 83 35,000 BTU/hr | 67 30,000 BTU/hr |
| Controls 20% | 50 thermostat | 0 manual control, push button ignition |
| Fuel 5% | 0 propane only | 0 natural gas only |
| Warranty 30% | 0 1-year warranty | 0 1-year warranty |
| Empire DV35 Direct Vent Wall Furnace | Williams 3003822 Direct Vent Furnace | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Direct vent |
| Heat type | Furnace | Furnace |
| Maximum input | 35,000 BTU/hr | 30,000 BTU/hr |
| Efficiency | - | 66% AFUE |
| Fuel and controls | ||
| Fuel | Propane | Natural gas |
| Thermostat | Yes | No |
| Blower | No | No |
| Ignition | Push button | Push button |
| Needs an outlet | No | No |
| Build | ||
| Warranty | 1 year | 1 year |
