Comfort Glow CGPS2100
#12 in Pellet stovesFull review
A low cost pellet stove for a few rooms or a small home, built by United States Stove Company.
Amazon $1,199$1,199
The Comfort Glow CGPS2100 is the better stove overall, rated 3.5 to 3.4. The Comfort Glow CGPS2100 leads on convenience. The Comfort Glow CGPS2100 costs $100.99 less ($1,199 vs $1,299.99).
Castle Serenity 41278
#19 in Pellet stovesFull review
A simple, easy to clean pellet stove with good scheduling for a small home, held back by a short warranty.
Amazon $1,349 Castle $1,299.99$1,299.99
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 Comfort Glow CGPS2100 for convenience (up to 40 hours per hopper, thermostat vs burn time not published, thermostat).
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 | Comfort Glow CGPS2100 | Castle Serenity 41278 |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Efficiency 30% | 90 78% EPA tested efficiency (HHV) | 90 78% EPA tested efficiency (HHV) |
| Value 30% | 25 $51.13 per 1,000 BTU of EPA tested output ($1,199, 23,449 BTU) | 28 $49.07 per 1,000 BTU of EPA tested output ($1,299.99, 26,493 BTU) |
| Emissions 15% | 56 1.1 g/h of smoke particles (EPA) | 61 1 g/h of smoke particles (EPA) |
| Warranty 10% | 50 warranty not published (neutral score used) | 0 1-year warranty |
| Convenience 15% | 69 up to 40 hours per hopper, thermostat | 55 burn time not published, thermostat |
Specifications
| Comfort Glow CGPS2100 | Castle Serenity 41278 | |
|---|---|---|
| EPA certification | ||
| EPA certified | Yes (2020 standard) | Yes (2020 standard) |
| Efficiency (HHV) | 78% | 78% |
| Emissions | 1.1 g/h | 1 g/h |
| Tested heat output | 10,300 to 23,449 BTU | 12,807 to 26,493 BTU |
| Heating | ||
| Fuel | Wood pellets | Wood pellets |
| Type | Freestanding | Freestanding |
| Advertised output | - | 31,960 BTU |
| Heats up to | 2,200 sq ft | 1,500 sq ft |
| Catalytic | No | No |
| Blower | Included | Included |
| Thermostat | Yes | Yes |
| App control | No | No |
| Fuel | ||
| Hopper | 60 lb | 40 lb |
| Burn time per hopper | 40 h | - |
| Power needed | 120 V outlet | 120 V outlet |
| Installation | ||
| Flue size | 3 in | 3 in |
| Mobile home approved | Yes | Yes |
| Dimensions | 23 x 23.5 x 44.5 in (W x D x H) | 18.25 x 23.75 x 34 in (W x D x H) |
| Weight | - | 186 lb |
| Warranty | - | 1 year |
| Released | - | 2023-08 |