Ashley Hearth DVAG25-DF Dual Fuel
#7 in Direct ventFull review
For a cabin, garage apartment or open living area that needs a lot of heat without power, especially if you might switch between propane and natural gas.
Amazon $899.99$899.99
The Ashley Hearth DVAG25-DF Dual Fuel is the better gas wall heater overall, rated 3.2 to 2.7. The Ashley Hearth DVAG25-DF Dual Fuel leads on controls, fuel and value. The Williams 3003822 Direct Vent Furnace wins on heat output. The Ashley Hearth DVAG25-DF Dual Fuel costs $390.01 less ($899.99 vs $1,290).
Williams 3003822 Direct Vent Furnace
#11 in Direct ventFull review
A 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 $1,290$1,290
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 Ashley Hearth DVAG25-DF Dual Fuel for controls (thermostat vs manual control, push button ignition), fuel (runs on propane or natural gas vs natural gas only) and value ($36 per 1,000 BTU ($899.99, 25,000 BTU) vs $43 per 1,000 BTU ($1,290, 30,000 BTU)).
- Choose the Williams 3003822 Direct Vent Furnace for heat output (30,000 BTU/hr vs 25,000 BTU/hr).
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 | Ashley Hearth DVAG25-DF Dual Fuel | Williams 3003822 Direct Vent Furnace |
|---|---|---|
| Overall rating | 3.2/5 | 2.7/5 |
| Value 30% | 91 $36 per 1,000 BTU ($899.99, 25,000 BTU) | 83 $43 per 1,000 BTU ($1,290, 30,000 BTU) |
| Heat output 15% | 50 25,000 BTU/hr | 67 30,000 BTU/hr |
| Controls 20% | 50 thermostat | 0 manual control, push button ignition |
| Fuel 5% | 100 runs on propane or natural gas | 0 natural gas only |
| Warranty 30% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Ashley Hearth DVAG25-DF Dual Fuel | Williams 3003822 Direct Vent Furnace | |
|---|---|---|
| Heat | ||
| Venting | Direct vent | Direct vent |
| Heat type | Furnace | Furnace |
| Maximum input | 25,000 BTU/hr | 30,000 BTU/hr |
| Heating area claim | 825 sq ft | - |
| Efficiency | - | 66% AFUE |
| Fuel and controls | ||
| Fuel | Dual fuel | Natural gas |
| Thermostat | Yes | No |
| Blower | No | No |
| Ignition | Push button | Push button |
| Needs an outlet | No | No |
| Build | ||
| Weight | 62.2 lb | - |
| Warranty | 1 year | 1 year |