Harman Accentra 52i Pellet Insert

Starting at $4,199

The Harman Accentra 52i is the latest, upgraded edition of the best-selling Accentra Insert. Now, Harman® PelletPro™ and ESP Technology deliver 85% efficiency and a 10,000 increase in BTU output, while still providing powerful, even heat within 1 degree. And a reengineered design provides even easier maintenance—for up to 50% less cleaning time than any other pellet appliance available.

  • 53,000 BTUs — heats 900 to 2,600 square feet, based on climate and home efficiency
  • Up to 64.5 lb hopper capacity
  • 81.7% efficiency
  • Automatic ignition and temperature control
  • Flame reactive mirrored glass (standard feature)
  • EPA certified

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Top 10 Reasons to Buy an Accentra 52i

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Key Features and Technologies

PelletPro™ System

PelletPro™ System

The patented Pellet Pro System makes it possible to burn any grade of pellet fuel for maximum heat and efficiency.

Exhaust Sensing Probe Technology

Exhaust Sensing Probe Technology

Harman pellet stoves utilize an advanced Exhaust Sensing Probe (ESP) system that monitors and adjusts heat output to maintain room temperatures within 1 degree.


Is This Product Right For You?

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Recommended Maintenance

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Model Comparison

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Insert Finishes

Choose from two finishes to complement any décor.


Optional Log Set

Enjoy the look of a real log fire with the optional ceramic log set


Wing Extension

For larger fireplace openings, the standard surround extension (shown here) and custom surrounds (special order) complete the installation.


Dimensions in inches. Refer to installation/owner's manual for detailed specifications on installing this product. Hearth & Home Technologies reserves the right to update units periodically. Product installation must adhere strictly to instructions shipped with product.

Model Specifications

ACCENTRA 52i

EPA Certified

Width: 41-13/16
Height: 32-1/8
Hopper Height: 1-90-574200: 20
1-90-574220: 22
1-90-574240: 24
Depth: 29-5/16
Extension onto Hearth: 16-1/2
BTU/Hour Input1: 13,800-53,000
Heating Capacity2: 900 - 2,600 sq ft
Hopper Capacity: 20" - 47-1/2lbs
22" - 58lbs
24" - 64-1/2lbs
Viewing Area: 181-1/8 sq in
Efficiency3: 81.7%
Emissions: 1.5g/hr

1BTU/hr Input based on maximum feed rate per hour multiplied by approximately 8,600 BTUs, which is the average BTUs from one pound of pellets
2See your local Harman dealer for help in determining the product that best suits your heating needs based on climate, home efficiency, location of the heater, and air movement in the room.
3Weighted Average LHV (Low Heating Value) Efficiency

Heat output will vary depending on the type of fuel used. The flame and ember appearance may vary based on the type of fuel burned and the venting configuration used. Actual product appearance, including flame may differ from image shown. Refer to the owner's manual for complete clearance requirements and specifications. Product specifications and pricing subject to change without notice. For testing and listing information please refer to the owner's/installation manual.

*For select products: Heating capacity to be used as a guide only. See your local dealer for help in determining the product that best suits your heating needs based on climate and home efficiency.

†For wood-burning appliances: Actual burn times will vary based on how the appliance is operated, load size, moisture content and type of wood used, and installation.


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