The Harman XXV Pellet Stove

The Harman XXV pellet stove is designed to look like a traditional woodburner, and it has a top vent option which joins to six inch chimney connector flue pipe for an even more authentic look. This is a very quiet stove when operating.

As well as the normal top accordion heat exchanger, the fireback is also part of the heat exchange system. This stove gives 50,000 btu. and is capable of heating an area of 1,700 square feet.

Available in five colours, (see below for details), the Harman XXV has a glass hopper lid to allow assessment of the fuel situation at a glance. It has a mirror glass viewing window which permits a good fire view when the stove is operating. When the stove is off, the mirror glass presents a reflective surface.

The cast iron body is nicely detailed with oak leaf patterns on the side panels and air grill. The large ash pan, which only needs emptying after a ton of pellets, has a built in carrying handle.

For most heat settings other than maximum, the stove is capable of running without its distribution blower being turned on. This means that you can have a quiet time with a view of a good fire.

The control board has some diagnostics to help isolate any problems. There is also a port where a Harman dealer can plug in a diagnostic tool.

The Harman room heat sensor is 'intelligent' in that it can monitor temperature trends in the room and either speed up or slow down the stove to compensate. This provides more even temperatures than a stove which starts and stops.

If you are unsure of the meanings of the terms in the pellet stove review below,or their implications, please go to the Pellet Stove Reviews page for an explanation.

harman xxv

Heating Area 1,700 sq. ft.

Max. Heat Output 50,000 btu.

Min. Heat Output Zero

Automatic Ignition Yes

Manual Ignition If needed

Hopper Capacity 65 lbs.

Burn time 65 hrs.

Fuel Type Any biomass pellets

Glass Air Wash Yes

Built in Blower Yes

Convection Blower Capacity 150 cfm.

Thermostat Compatible Can be added, but the onboard sensors mean it probably won't be needed.

E.P.A. Approved Yes

Emissions 2.4 gr./hr.

Efficiency 78%


Height 31.25 in.
Width 29 in.
Depth 26.75 in.

Weight 375 lbs.

Window Size 16 in. by 11 in.

Flue Vent Size 3 in.

Top Vent Yes, optional adapter available

Rear Vent Yes

Rear Vent Height 8.75 in.

Battery Backup Offered as an option. See Stove Sentry

Surge Protector Recommended

Colours Black, Charcoal, Forest Green, Mojave Red, Metallic Blue

Exhaust Temperature Sensor Yes

Low Draft Shutdown Yes

Construction Type Cast Iron

Automatic Shutdown and Re-ignition Yes


Six Years

Defects in materials or workmanship

Three years

Failure of mechanical or electrical parts.

Warranty transferable to a new owner for $25 fee.


Enamel colours, see above.
Steel shaped floor protector
Top flue adapter


The battery backup offered by Harman is not supported by onboard electronics. It's an inverter unit made by Surefire and will work effectively with any pellet stove. See the link above.


One ton of pellets burned

Empty the ash pan, scrape the burn pot, clean the heat exchanger surfaces.

Once a year

Clean and scrape the burn pot, clean the heat exchanger, clean ash from the inside of the stove, clean the combustion blower fan and internal flue. Clean fines from the fuel delivery system.

Inspect and clean the flue if necessary.


If you would like to leave a review of the Harman XXV pellet stove, please use the form on the contact page.

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