Your choice of new stove must have the minimal impact on the new home's air permeability (the air leakage rate per hour per cubic metre under pressure). It is essential therefore that your eventual stove choice features direct external air supply (DEAS) capability. Having this feature will ensure that the stove does not take its combustion air from the room (except briefly when the stove door is opened for refuelling) allowing you to avoid the required dedicated open air vent as specified in Document J.Click here to read more...