US Stove US5522-W
#8 in Pellet stovesFull review
A big hopper pellet stove for buyers who want days of thermostat controlled heat between fills and app control. Pair it with backup power if outages are common.
Amazon $1,599.99$1,599.99
The US Stove US5522-W is the better stove overall, rated 3.7 to 3.0. The US Stove US5522-W leads on convenience, warranty and value. The US Stove US5522-W costs $349.01 less ($1,599.99 vs $1,949).
ComfortBilt HP21 Pellet Stove
#25 in Pellet stovesFull review
A traditional looking mid-size pellet stove for a living area, but newer ComfortBilt models burn cleaner and cost less.
ComfortBilt $1,949$1,949
Prices were last checked October 31, 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 US Stove US5522-W for convenience (up to 80 hours per hopper, thermostat, app control vs up to 16 hours per hopper, thermostat), warranty (limited lifetime warranty vs 5-year warranty) and value ($49.09 per 1,000 BTU of EPA tested output ($1,599.99, 32,591 BTU) vs $61.38 per 1,000 BTU of EPA tested output ($1,949, 31,753 BTU)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every pellet stoves stove; a clear win is highlighted. How we rank explains each one.
| Factor weight | US Stove US5522-W | ComfortBilt HP21 Pellet Stove |
|---|---|---|
| Overall rating | 3.7/5 | 3.0/5 |
| Efficiency 30% | 80 76% EPA tested efficiency (HHV) | 80 76% EPA tested efficiency (HHV) |
| Value 30% | 28 $49.09 per 1,000 BTU of EPA tested output ($1,599.99, 32,591 BTU) | 10 $61.38 per 1,000 BTU of EPA tested output ($1,949, 31,753 BTU) |
| Emissions 15% | 39 1.5 g/h of smoke particles (EPA) | 39 1.5 g/h of smoke particles (EPA) |
| Warranty 10% | 100 limited lifetime warranty | 44 5-year warranty |
| Convenience 15% | 100 up to 80 hours per hopper, thermostat, app control | 36 up to 16 hours per hopper, thermostat |
Specifications
| US Stove US5522-W | ComfortBilt HP21 Pellet Stove | |
|---|---|---|
| EPA certification | ||
| EPA certified | Yes (2020 standard) | Yes (2020 standard) |
| Efficiency (HHV) | 76% | 76% |
| Emissions | 1.5 g/h | 1.5 g/h |
| Tested heat output | 13,640 to 32,591 BTU | 12,349 to 31,753 BTU |
| Heating | ||
| Fuel | Wood pellets | Wood pellets |
| Type | Freestanding | Freestanding |
| Advertised output | 33,000 BTU | 32,000 BTU |
| Heats up to | 3,000 sq ft | 2,400 sq ft |
| Catalytic | No | No |
| Blower | Included | Included |
| Thermostat | Yes | Yes |
| App control | Yes | No |
| Fuel | ||
| Hopper | 170 lb | 40 lb |
| Burn time per hopper | 80 h | 16 h |
| Power needed | 120 V outlet | 120 V outlet |
| Installation | ||
| Flue size | 3 in | - |
| Mobile home approved | Yes | Yes |
| Dimensions | 26 x 30 x 40 in (W x D x H) | 23.5 x 24 x 33 in (W x D x H) |
| Weight | 264 lb | 275 lb |
| Warranty | Limited lifetime | 5 years |