Abstract: A gas fireplace comprises a support and housing frame, a gas combustion chamber, at least one chimney duct for releasing flue gases, coming from said combustion chamber, at least one inlet duct for external comburent air leading to said combustion chamber, a ventilation and heating circuit designed to suck environment air, and heat and fed it at least partly into the space where the fireplace is located, and at least one motor-driven fan designed to operate in said ventilation and heating circuit. The gas fireplace further comprises at least one silencer device provided along said ventilation and heating circuit.