ComfortBilt HP21 Pellet Stove
ComfortBilt HP21 Pellet Stove
- Free Shipping
- No Sales Tax
- Price Match
- Secure Checkout
Add your venting
Complete 3" PelletVent Pro kit for a standard horizontal through-wall installation. Black Matte o...
+ $479.00
Direction changes in your vent run. Black or Galvalume.
+ $124.98
The required first connection between the stove's exhaust hub and the vent system.
+ $43.88
Service access point for vertical vent runs — simplifies routine vent cleaning.
+ $144.72
Product Documents
Overview
The most affordable way into a ComfortBilt — real pellet heat for spaces up to 2,400 sq ft.
The HP21 keeps the essentials that made ComfortBilt a best-selling brand — automatic ignition, five heat levels, Temp mode with ECO cycling, 7-day scheduling, thermostat support, and an included remote — in a compact, lower-priced package. Over 31,000 BTU handles bedrooms-plus-living-space zones, cabins, garages, and smaller homes, and the 40 lb hopper means you're not feeding it constantly.
Choose the standard black finish or add the stainless window trim for a brighter front. Either way, maintenance is the same simple weekly routine as every ComfortBilt: removable ash pan, heat-tube scraper, easy access panels.
🎁 FREE GIFT — Limited-Time Launch Offer: StoveSource includes a B67C Brush Cleaning Kit ($30 value) free with every HP21 — the vent and burn-pot brushes your maintenance routine needs, added to your shipment automatically.
✔ Required for Your HP21 Installation
Per the HP21 owner's manual — every pellet stove install needs these:
- ☑ 3" Type-L Pellet Vent Kit — complete piping for a standard through-wall installation (includes the required appliance adapter).
- ☑ Hearth Pad — non-combustible floor protection extending 6" past the glass and both sides (the 36" standard pad fits the HP21).
- ☑ Outside Air Kit — required for mobile homes; recommended for basements and tightly sealed homes.
Optional: extra pipe lengths & elbows for longer runs · clean-out tee for vertical installs.
Specifications
- Heat output: 12,349–31,753 BTU/hr (EPA test)
- Heating capacity: up to 2,400 sq ft*
- Efficiency: 76.3% HHV (EPA certified)
- Emissions: 1.47 g/hr (2020 EPA compliant)
- Hopper: 40 lbs
- Electrical: 115V 60Hz, 4.3A start / 1.8A run
- Exhaust: 3" Type L/PL pellet vent · Fresh-air intake: 2"
- Weight: 275 lbs shipping
- Remote included
- Warranty: 1-year manufacturer warranty (online purchase) — see the warranty section and owner's manual for the component schedule
*Heating capacity depends on climate, insulation, and layout.
Why buy from StoveSource: Authorized ComfortBilt dealer · Free shipping over $250 · No sales tax (except WY) · Price match guarantee · 1-888-914-0022
Shipping & Returns
Free freight shipping on orders over $250 · ships in 1–3 business days · curbside delivery.
Free shipping on orders over $250 to the continental US.
Ships via LTL (Less Than Truckload) freight – carriers include XPO Logistics, Estes Express, ABF Freight, Old Dominion, and FedEx Freight. Transit time is typically 3–10 business days from ship date. The carrier will call to schedule a delivery appointment.
Curbside delivery only. The driver will lower your order to the curb or end of your driveway via liftgate. This does not include bringing the item inside, carrying up stairs, or crossing uneven terrain.
Have an appliance dolly and an extra person available on delivery day. Need inside or threshold delivery? Contact us before ordering.
Inspect before signing. Before signing the Bill of Lading (BOL), check for any visible packaging damage. Write "DAMAGED" or "Subject to inspection" on the BOL if anything looks off.
Contact us within 5 business days of delivery. Open and fully inspect your item within 48 hours.
Returns. Unused, uninstalled units in original packaging can be returned within 30 days. Appliance returns are subject to a $300 return freight charge plus a 15% restocking fee. Units that have been fired or installed cannot be returned. Accessories and parts carry a 15% restocking fee.
Warranty Show details Hide details
Other accessories & add-ons
Blowers, screens, hearth pads and more for your stove.
DuraVent 3" Wall Thimble Air Intake Kit
Wall pass-through plus the outside-air connection — required for mobile homes, recommended for basements an...
$229.99
ComfortBilt 36" Standard Hearth Pad — Type 2
Meets this stove's floor-protection requirements for flatwall installs. Four finishes.
$549.00
ComfortBilt 40" Corner Hearth Pad — Type 2
Corner-cut floor protection for corner installations. Three finishes.
$649.00
ComfortBilt Flatwall Hearth Pad — Tile & Slate
Premium tile and slate flatwall pads in four designer finishes.
$649.00
ComfortBilt / DuraVent 3" Pellet Stove Piping Kit
Complete 3" PelletVent Pro kit for a standard horizontal through-wall installation. Black Matte or Galvalume.
$429.00
DuraVent 3" Appliance Adapter
The required first connection between the stove's exhaust hub and the vent system.
$36.95
DuraVent 3" Single Tee with Clean-Out Cap
Service access point for vertical vent runs — simplifies routine vent cleaning.
$135.87
Questions before you buy? Our stove experts are here to help.
Sizing for your space
Right BTU range for your sq ft and climate.
Clearance & install
Venting and clearance for your setup.
Lead time & shipping
Real ETAs and freight scheduling.