The two main advantages involve the environment and cost saving.
Starting with the environment, by using a wood pellet boiler, you’re reducing the amount of waste produced, while at the same time reducing the amount of gas or oil that’s being used. Wood pellets are a “carbon lean” fuel, producing a fraction of the Carbon emissions of fossil fuels.
When you consider the financial aspect (cost saving) of a wood pellet boiler, it’s easy to see where you will start to save money. Because wood pellets are made from a waste product, they’re low cost, especially in comparison to gas and oil. Over a span of 20 years, you will probably spend 5 to 10 times more on fuel than you will spend on your investment in the boiler.