The Invincible has been the flagship of the Harman pellet stove lineup. Clicking on the Invincible RS image will direct you to the detailed RS section. Harman Stoves or Pellet Heat. Harman makes the best pellet stoves in the world! Harman offers five models of high performance stoves to choose from. Below are more details of each of the world's best pellet stoves. More heat when you need it. All Harman stoves have the horsepower to heat even in the coldest weathe. Here's why so many New Englanders choose Harman-Wait 5 minutes and the weather will change! That's what we say about New England's dynamic weather shifts. Harman stoves are ideal for this climate and it is one of the reasons they are so popular. Harman Invincible Pellet Wood Stove Fireplace Insert Harmon. Looks, runs and sounds like a new stove. Harman Pellet Stove Parts. Invincible RS. Pellet Stove Pipe and Pricing. Servicing: Bourne, Falmouth, Mashpee, Marstons Mills, Osterville, Cataumet. Us show you how. Heat for less With projections in the prices of heating oil and gas continuing to rise and fuel supplies uncertain, pellet heat provides a reliable alternative. Pellet fuel is readily available and the price has remained stable for the past 10 years. Currently.