English to Italian Tech/Engineering Furniture / Household Appliances stufe

Non ho altro contesto, è un punto in un elenco di 'features' di una gamma di stufe.

Ho però trovato questa spiegazione online:

When burning your choice of fuel the volatile by-products emitted by the initial burning are reignited and burnt again in the fire. This double combustion subsequently reduces emissions and ash deposits and delivers even more warmth to your room – more heat for less fuel.

Altogether a cleaner home, a cleaner chimney and much cleaner for our environment. In addition to this,the clean-burn air-wash also keeps the glass doors beautifully clear, giving you an uninterrupted view of the fire.

Grazie mille per qualsiasi suggerimento, è piuttosto urgente.