Stoves ComfortBilt HP22 Pellet Stove
ComfortBilt HP22 Pellet Stove
A popular online-sold pellet stove whose maximum output matches its EPA listing (40,689 BTU/hr) and whose 81% HHV efficiency is well above the pellet median.
Key specs at a glance
Tested heat output
12,820–40,689 BTU/hr EPA
Low to high burn rate, wood pellets test
Advertised maximum
40,689 BTU/hr maker
Matches the EPA maximum
Efficiency
81% EPA HHV
Maker: 80.5%
Advertised heating area
Up to 2,800 sq ft
15 BTU/hr of tested output per sq ft at the top figure
Particulate emissions
1 g/hr EPA
Limit 2.0 g/hr (pellet test)
Hopper
55 lb
Maker figure
Where to buy · ComfortBilt HP22: $2,299 (comparison page also shows $2,799) on the maker's site (checked 2026-10-21). No retailer link yet.
Advertised vs EPA-Tested Output
BTU/hr. The advertised figure is 9,696–40,689 BTU/hr sourcechecked 2026-10-21 The EPA range is the tested low and high burn rate from the ComfortBilt HP22N, HP22, and HP22i Insert listing (12,820–40,689 BTU/hr EPAchecked 2026-10-21 ). Why the numbers differ.
Our Read
ComfortBilt sells direct and through big-box retailers, and the HP22 is the model that shows up most often in r/PelletStoveTalk threads. The same EPA listing covers the HP22N and the HP22i insert.
Unlike the Harman and PelPro pages, ComfortBilt’s maximum output matches the EPA listing exactly at 40,689 BTU/hr, and its 80.5% efficiency lines up with EPA’s 81% HHV. The low end is a different story: ComfortBilt says 9,696 BTU/hr, while EPA’s tested minimum is 12,820.
The 2,800 sq ft rating is the stretch. That’s about 14.5 BTU/hr of tested output per square foot, which only works in a well-insulated house or a mild climate.
Bottom line: Good certified numbers for the price. Trust the 40,689 BTU/hr maximum; be skeptical of 2,800 sq ft.
Maker Claims vs the EPA Listing
9,696–40,689 BTU/hr ComfortBilt HP22 resource center
12,820–40,689 BTU/hr in the EPA listing EPA listing
The maximum matches EPA exactly; the minimum is lower than anything EPA lists for this model line. We show the EPA range.
Up to 2,800 sq ft ComfortBilt HP22 resource center
40,689 BTU/hr tested maximum EPA listing
About 14.5 BTU/hr of tested output per square foot at 2,800 sq ft, one of the most generous area ratings per BTU among the pellet stoves here.
81% HHV in the EPA listing EPA listing
Effectively the same number. ComfortBilt doesn't say which basis, but it lines up with EPA's HHV figure.
EPA Certification Record
| Field | EPA database value |
|---|---|
| Listing | ComfortBilt HP22N, HP22, and HP22i Insert |
| Appliance type | Pellet stove, non-catalytic |
| Test fuel | Wood Pellets |
| Heat output range | 12,820–40,689 BTU/hr |
| Efficiency (HHV) | 81% |
| Particulate emissions | 1 g/hr |
| Carbon monoxide | not listed |
| Meets 2020 standard | Yes |
From the EPA Certified Wood Heater Database export, checked 2026-10-21. Efficiency is the weighted average of the test burn rates on the higher heating value basis (HHV vs LHV). See every listing in our EPA database table.
Specifications (Maker Sources)
Heat
- Advertised heat output
- 9,696–40,689 BTU/hr ComfortBilt HP22 resource centerchecked 2026-10-21
- Heating area
- Up to 2,800 sq ft ComfortBilt HP22 resource centerchecked 2026-10-21
- Efficiency
- 80.5% ComfortBilt HP22 resource centerchecked 2026-10-21
Fuel & build
- Hopper
- 55 lb ComfortBilt HP22 resource centerchecked 2026-10-21
Controls, emissions & price
- Emissions (maker)
- 1.01 g/hr ComfortBilt comparison pagechecked 2026-10-21
- List price
- $2,299 (comparison page also shows $2,799) ComfortBilt comparison pagechecked 2026-10-21
What We Haven't Checked
- Which of the two prices on the comparison page is the current selling price.
- Real-world output in your house, which depends on wood moisture, chimney draft and how you run the stove. Nobody's lab number covers that.
Compare: HP22 vs Castle Serenity
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Sizing a room? Run the heating and fuel cost calculator, or start with the best pellet stoves guide.