ComfortBilt HP22i Pellet Insert

Last updated: October 31, 2026

ComfortBilt HP22i Pellet Insert
3.5/5#2 of 5 in inserts wood stoves
3.5

A strong, efficient pellet insert for anyone who wants real heat from an existing fireplace. Have it installed to the manual and local code.

  • 81%Efficiency
  • 12,820 to 40,689 BTUHeat output
  • 1 g/hEmissions
  • 5 yearsWarranty
Check price at Amazon$2,499

Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Turns a drafty open fireplace into a thermostat controlled heater
  • EPA tested peak near 40,700 BTU/h, among the strongest pellet inserts at this price
  • Runs up to 18 hours on a full hopper
  • Comes with the surround shroud, remote and an ash vacuum
Cons
  • Stops heating in a power cut unless you have backup power
  • Needs a fireplace opening at least 21 in wide, 18 in deep and 24.5 in high
  • Wi-Fi control costs extra

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model numberHP22i
EPA certification
EPA certifiedYes (2020 standard)
Efficiency (HHV)81%
Emissions1 g/h
Tested heat output12,820 to 40,689 BTU
Heating
FuelWood pellets
TypeFireplace insert
Advertised output40,689 BTU
Heats up to2,800 sq ft
CatalyticNo
BlowerIncluded
ThermostatYes
App controlNo
Fuel
Hopper47 lb
Burn time per hopper18 h
Power needed120 V outlet
Installation
Flue size3 in
Mobile home approvedYes
Weight262 lb
Warranty5 years

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