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Comfortbilt HP21 2,400 Sq Ft Pellet Stove

Photo: Comfortbilt

Pellet stove · Comfortbilt

Comfortbilt HP21 2,400 Sq Ft Pellet Stove

Pellet stove, up to 2,400 sq ft, 32,000 BTU/h

Heats up to (maker)
2,400 sq ft
Heat output (maker)
32,000
Fuel
Pellet, Wood
Hopper
40 lb
Blower
blower
Thermostat
programmable thermostat
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In short

Built for homes without a masonry chimney.

Wins
Heats up to 2,400 sq ft (maker).
Gives ground
Stops in a power cut without a backup.
Suits
Homes without a masonry chimney.

Updated October 2026

What you get

The Comfortbilt HP21 2,400 Sq Ft Pellet Stove is a pellet stove that its maker rates at 32,000 BTU per hour and says heats up to 2,400 square feet.

Makers rate heating area in their own conditions, so read 2,400 square feet as a ceiling; the size calculator lists the closest fits for your space.

Its hopper holds 40 lb; refills depend on the heat setting you run.

Like nearly every pellet stove it needs household power for the auger, fans and controls; plan a backup if outages are common. What happens in an outage.

Also on the listing: overall dimensions of 27 in (D) x 23.5 in (W), a shipping or unit weight of 260 lb and alloy steel construction.

Warranty, per the listing: 1 year parts and labor.

The figures, from the maker

Each figure is the maker's or the listing's own, with its source marked. A figure the maker doesn't give is shown as not stated.

Model numberHP21Retailer
MaterialAlloy SteelRetailer
Dimensions (seller)27"D x 23.5"WRetailer
Product weight260 lbRetailer
Warranty1 year parts and laborRetailer
FuelPellet, WoodRetailer
Mounting / installationFreestandingRetailer
Heats up to (maker)2,400 sq ftRetailer
Heat output (maker)32,000Retailer
Hopper40 lbRetailer
Thermostatprogrammable thermostatRetailer
BlowerblowerRetailer

Is it the right heater for the room?

Pick it when

  • Homes without a masonry chimney
  • Owners who want set-and-forget heat

Pass on it when

  • Frequent long power cuts without a backup
  • Owners who want to burn cordwood

Where it wins, where it gives ground

Wins

  • Heats up to 2,400 sq ft (maker)
  • 40 lb hopper
  • Feeds itself from the hopper
  • Thermostat control

Gives ground

  • Stops in a power cut without a backup
  • Burn pot needs regular cleaning

Know before you install

  • Figures are the maker's own and are rated in the maker's conditions. Installation, venting, chimney, gas and electrical work follow the manual and local code, carried out by a qualified installer.

Heaters to weigh against it

Canyon Lodge CBF66W Pellet StoveHeats up to 2,500 sq ft.
Cleveland Iron Works PSBF66W Pellet StoveHeats up to 2,500 sq ft.
Comfort Glow CGPS2100 Pellet StoveHeats up to 2,200 sq ft.

Other pellet stoves and inserts in the same heat range

Every pellet stoves and inserts on one chart · All Comfortbilt models listed

Buying this model

The button opens this exact model's listing. Prices and stock change, and installation parts are usually sold separately; check the box contents and the manual's venting list before you order.

Prices change often; the button shows today's price.
Check price on Amazon

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions about this model

Does the Comfortbilt HP21 2,400 Sq Ft Pellet Stove work without power?
No, not on its own: the auger and fans need electricity. A battery backup the maker allows, or a generator, keeps it running.
How long does a hopper last in the Comfortbilt HP21 2,400 Sq Ft Pellet Stove?
It holds 40 lb. Higher heat settings empty it faster.

Bottom line

Built for homes without a masonry chimney.