Direct vent vs chimney

[DBNH22]

I am currently considering purchasing a Hamrann PB105 which I know cna be direct vented. I do however have two unused flues in my chimney. They were inspected last year and I was told they were in decent condition as they have never bene used (house is only 12 years old)

So which is better with a pellet boiler and why? Direct vent or through a chimney?

Thanks guys

 

[doingitonadime]

If your chimney doesn't have a clay liner you can't use it without a full exhaust by law here