Air brought into the kiln replaces carbon monoxide and adds oxygen needed for best fired results.
Oxygen in the kiln reduces corrosion of metal heating elements and kiln sitter parts, increasing their life.
A downdraft vent costs less than two cents per hour to operate. It requires 80% less makeup air than a hood above the kiln and saves up to $1.00 per day for heating or cooling makeup air as compared to a hood.
Manual venting is eliminated — no more touching the hot kiln to lower the lid or replace peephole plugs. The kiln stays closed throughout the firing and cool down is quicker (4–10 hours less) without opening the lid.
Downdraft venting is much more effective than a hood in removing fumes. It does not significantly increase firing time or affect the ability of the kiln to reach temperature.
Most kiln manufacturers recommend and sell downdraft venting. It is easily installed with no overhead pulleys.
Only downdraft venting improves firing conditions in the kiln, while removing fumes from the kiln and workroom!
return to all questions